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WO2012007383A1 - Procédé de production de produits pressés contenant des particules de carbone - Google Patents

Procédé de production de produits pressés contenant des particules de carbone Download PDF

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Publication number
WO2012007383A1
WO2012007383A1 PCT/EP2011/061614 EP2011061614W WO2012007383A1 WO 2012007383 A1 WO2012007383 A1 WO 2012007383A1 EP 2011061614 W EP2011061614 W EP 2011061614W WO 2012007383 A1 WO2012007383 A1 WO 2012007383A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
weight
substance
carbon particles
compacts
Prior art date
Application number
PCT/EP2011/061614
Other languages
German (de)
English (en)
Inventor
Hado Heckmann
Josef Stockinger
Original Assignee
Siemens Vai Metals Technologies Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens Vai Metals Technologies Gmbh filed Critical Siemens Vai Metals Technologies Gmbh
Priority to BR112013000782A priority Critical patent/BR112013000782A2/pt
Priority to RU2013105720/04A priority patent/RU2583432C2/ru
Priority to KR1020137003564A priority patent/KR101946343B1/ko
Priority to CN201180034050.6A priority patent/CN102971403B/zh
Priority to US13/809,931 priority patent/US20130160607A1/en
Priority to CA2805000A priority patent/CA2805000A1/fr
Priority to UAA201300421A priority patent/UA110482C2/uk
Publication of WO2012007383A1 publication Critical patent/WO2012007383A1/fr
Priority to ZA2013/00040A priority patent/ZA201300040B/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L5/00—Solid fuels
    • C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
    • C10L5/04—Raw material of mineral origin to be used; Pretreatment thereof
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L5/00—Solid fuels
    • C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
    • C10L5/06—Methods of shaping, e.g. pelletizing or briquetting
    • C10L5/10—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L5/00—Solid fuels
    • C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
    • C10L5/06—Methods of shaping, e.g. pelletizing or briquetting
    • C10L5/10—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders
    • C10L5/105—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders with a mixture of organic and inorganic binders
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L5/00—Solid fuels
    • C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
    • C10L5/06—Methods of shaping, e.g. pelletizing or briquetting
    • C10L5/10—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders
    • C10L5/14—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders with organic binders
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L5/00—Solid fuels
    • C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
    • C10L5/06—Methods of shaping, e.g. pelletizing or briquetting
    • C10L5/10—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders
    • C10L5/14—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders with organic binders
    • C10L5/146—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders with organic binders with wax, e.g. paraffin wax
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L5/00—Solid fuels
    • C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
    • C10L5/06—Methods of shaping, e.g. pelletizing or briquetting
    • C10L5/10—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders
    • C10L5/14—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders with organic binders
    • C10L5/16—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders with organic binders with bituminous binders, e.g. tar, pitch
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L5/00—Solid fuels
    • C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
    • C10L5/34—Other details of the shaped fuels, e.g. briquettes
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L5/00—Solid fuels
    • C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
    • C10L5/34—Other details of the shaped fuels, e.g. briquettes
    • C10L5/36—Shape
    • C10L5/361—Briquettes
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/0046—Making spongy iron or liquid steel, by direct processes making metallised agglomerates or iron oxide
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/0066—Preliminary conditioning of the solid carbonaceous reductant
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • C22B1/24—Binding; Briquetting ; Granulating
    • C22B1/242—Binding; Briquetting ; Granulating with binders
    • C22B1/244—Binding; Briquetting ; Granulating with binders organic
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • C22B1/24—Binding; Briquetting ; Granulating
    • C22B1/242—Binding; Briquetting ; Granulating with binders
    • C22B1/244—Binding; Briquetting ; Granulating with binders organic
    • C22B1/245—Binding; Briquetting ; Granulating with binders organic with carbonaceous material for the production of coked agglomerates

Definitions

  • the invention relates to a process for the production of pellets containing pellets, the pellets obtained thereby and the use of the pellets in processes for producing pig iron in a fixed bed or in processes for the preparation of carbon carriers for processes for producing pig iron in a fixed bed.
  • Compressive strength is required to maintain the original size of the compacts after being charged into a material bunker or fixed bed reactor, despite pressure exerted by superposed layers of material.
  • hot strength refers to a) strength remaining after pyrolysis of the pellets in a high temperature zone
  • Coke particles existing size of these particles is largely retained.
  • coals which show an extraordinarily high water absorption capacity, in particular characterized by a high inherent moisture content.
  • the moisture content of the compacts should not be too high, ie at a maximum of 7% by weight. This is because this moisture in the use of the pellets for pig iron production or for the production of carbon carriers for
  • Drying produced additional pore volume.
  • the unwetted pore volume can absorb a corresponding amount of water or aqueous media.
  • the additional pore volume can again absorb water or aqueous medium.
  • certain coals also tend to have extra pore volume due to grain damage, especially during intense drying to generate.
  • molasses contains components which act catalytically with respect to a reaction of carbon with hot, C0 2 -containing gases, whereby in particular in the hot zones of a production of pig iron serving fixed bed at temperatures> 800-1000 ° C, depending on the pressure, the extent a conversion of solid carbon with C0 2 increases according to Boudouard reaction.
  • the hot strength of molasses-treated compacts is relieved by pyrolysis-derived, semi-coke or coke particles.
  • bitumen as a binder proposed in WO9901583A1 does not pose such problems associated with molasses. However, the production of pellets with bitumen is associated with very high binder costs.
  • the object of the present invention is to provide a process for the production of compacts, in which these disadvantages of the prior art are overcome, and compacts with sufficient green and hot strength even with the use of carbon particles, which must be pre-dried, using a known Lesser amount of a water-containing binder system can be produced.
  • This object is achieved by a method for producing a compact containing carbon particles, in which the carbon particles are mixed with a water-containing binder system and the resulting mixture is further processed by pressing into compacts,
  • the substance either penetrates into the pores of the carbon particles and accordingly prevents the penetration of components of the aqueous binder system by filling in the pore space. Or the substance settles in the Exit points of the pores on the carbon particle surface, also called pore necks, and prevents by this clogging of the pore necks penetration of components of the aqueous binder system in the pores.
  • aqueous binder system which is needed on the coal particle surface for binding purposes, can no longer fulfill these binding purposes after penetration into the pores. Accordingly, as compared with a method in which aqueous binder system can penetrate the pores, the amount of aqueous binder system required is reduced.
  • the coal particles to be processed into compacts become
  • a moisture content of less than 8% by weight preferably to a moisture content of less than 7% by weight.
  • a moisture in a range from greater than or equal to 4% by weight to less than 8% by weight is particularly preferred, a moisture in a range from greater than or equal to 5% by weight to less than 7% by weight is particularly preferred.
  • the aqueous binder system may contain one or more other components besides water.
  • the impregnation step may consist of steaming the carbon particles with the substance, spraying the carbon particles with the substance, mixing the substance into a moving bed of carbon particles, or mixing the substance into one
  • Fluidized bed of coal particles exist.
  • the subset of the carbon particles subjected to an impregnation step prior to mixing with the water-containing binder system and the carbon particles not subjected to an impregnation step can be the same material in terms of carbon grade and average particle size. According to another variant, the subset of the carbon particles, before the
  • Impregnation step the same type of coal as the carbon particles, which are not subjected to an impregnation step, but have a different average particle size than the carbon particles, which are not subjected to an impregnation step. It is not the entire amount of pellets to be processed coal particles impregnated, but only a subset.
  • Impregnation step is to be a coal type other than the carbon particles, which are not subjected to an impregnation step. In this case, to be impregnated subset of coal particles and not to be impregnated
  • Coal particles have the same or different average particle size.
  • coal particles from which compacts are to be made belong to a single type of coal, but differ in that they have different average particle sizes, it may be advantageous to impregnate a subset which has the largest possible average particle size. Because the specific surface for
  • a larger portion of the mass of pellets to be pelletized can be impregnated into carbon particles having a larger mean particle size than smaller particle size coal particles than impregnated with smaller average particle size carbon particles.
  • coal particles from which compacts are to be made belong to a single coal species, but differ in that they have different average particle sizes, it may also be advantageous to add a subset
  • the impregnated partial amount of the carbon particles is combined with the unimpregnated carbon particles, and the combined carbon particles are further processed into compacts.
  • impregnated carbon particles can be carried out in a unification step in which only one combination and optionally a mixture takes place.
  • the further steps for producing the compacts especially the mixing with a water-containing binder system with the product of the union.
  • impregnated carbon particles can also be made during mixing with a water containing binder system.
  • liquid refers to substances which are present during the impregnation step
  • Impregnation by means of a liquid denotes, for example, impregnation with substances which, although they are not themselves liquid under the conditions prevailing during the impregnation step, are emulsified or suspended in a liquid.
  • the substance to be impregnated becomes Carbon particles are preferably heated to a temperature at which the substance is liquid.
  • the substance with which the subset of carbon particles is impregnated in the impregnation step is water.
  • Carbon carriers having a low moisture content than these compacts can limit the water input into the pig iron production process to an acceptable level.
  • the substance with which the subset of the carbon particles is impregnated in the impregnation step is a water-insoluble and / or water-repellent substance.
  • the water-insoluble and / or water-repellent substance preferably belongs to that from waxes, organic coking or refinery products, as well as plastics
  • the impregnation step is advantageously carried out at a temperature at which the water-insoluble and / or water-repellent substance is liquid, in particular viscous.
  • the water-insoluble and / or water-repellent substance solidifies on cooling in the exit points of the pores on the coal particle surface.
  • Carbon particles is impregnated in the impregnation step, an aqueous solution of a substance or a mixture of substances.
  • a substance or a mixture of substances For example, it is molasses, which is an aqueous solution of a mixture of carbohydrates and other natural products.
  • dissolved substances of all kinds which improve the hot strength and cold strength of the compacts, can be used, for example starch or lignin bases from waste liquors of pulp production.
  • Substance mixtures caused effects are not diminished by the fact that they are dissolved in the water of the binder system containing water and flushed out of the pores.
  • Coal particles is impregnated in the impregnation step, an aqueous suspension of solid colloids, wherein the solid has water-repellent properties.
  • Examples include suspensions of colloidal talc, graphite or waxes in water. If the solids settle in the pores or in the pore necks, the entry of water-containing binder systems is due to the high
  • Carbon particles is impregnated in the impregnation step, an emulsion containing on the one hand water and on the other hand carbonaceous substances such as bitumens, raw tars obtained from hard coal, pitches, waxes, oils.
  • the carbon layers formed from the substances contain little or no catalytically active substances with respect to reaction with hot C0 2 -containing gases.
  • the lower limit of the amount of substance added in the impregnation step, called impregnating agent, is 0.3% by weight, preferably 0.5% by weight, more preferably 1% by weight, the upper limit is 5% by weight, preferably 3% by weight, particularly preferably 2% by weight. based on the weight of the too impregnating subset of the material to be processed to compacts, so to be impregnated subset of coal particles. Addition of more than 5% by weight of impregnating agent does not make economic sense. If less than 0.3% by weight of impregnating agent is added, impregnation is no longer effective
  • Binder system molasses and quicklime or hydrated lime. It can also consist of these components.
  • the binder system contains molasses in combination with strong inorganic acids, such as phosphoric acid, sulfuric acid, nitric acid.
  • Binder system an emulsion of bitumen in water. It can also consist of such an emulsion.
  • the binder system contains products from waste liquors of pulp production, starches, cellulose, beet pulp, waste paper pulp, groundwood, or long-chain polyelectrolytes such as carboxymethylcellulose.
  • quicklime or hydrated lime binder systems have the disadvantage that quicklime CaO and hydrated lime Ca (OH) 2 increase the reactivity of the pellets against hot C0 2 -containing gases due to catalytic activity, the embodiments without lime or hydrated lime have the advantage of compacts compared with to provide lower reactivity.
  • iron or iron oxide-containing particles are processed in a mixture with the carbon particles into pellets.
  • the inventive method the
  • Pressings are subjected to a heat treatment after the pressing.
  • the heat treatment is carried out at a temperature higher than the pressure.
  • the heat treatment causes a drying and / or hardening of the compacts.
  • the heat treatment can be carried out at temperatures of preferably> 250 ° C and ⁇ 350 ° C, where irreversible chemical processes can convert binder components.
  • water-soluble binder components can be converted to water-insoluble compounds.
  • the compounds formed in such conversions can contribute to the strength of the compacts.
  • molasses-containing binder system for example, a conversion of molasses by caramelization.
  • Binder system subjected to a heat treatment Binder system subjected to a heat treatment.
  • the heat treatment may be carried out by separately subjecting the impregnated subset to the heat treatment and combining it with the unimpregnated carbon particles after the heat treatment, or combining the impregnated subset with the unimpregnated carbon particles prior to the heat treatment of the carbon particles.
  • the heat treatment causes a drying.
  • the heat treatment additionally causes a concentration of the solutions, suspensions or emulsions and, accordingly, one
  • Components may, in addition to the aqueous binder system added thereafter, contribute to increased hot strength and cold strength
  • the heat treatment can be the transformation of the due
  • Heat treatment initially resulting coating the pore walls in water-insoluble compounds, or cause in the reactivity of the carbon particles to hot C0 2 containing gases lowering compounds.
  • Maximum temperature of the heat treatment is due to the pyrolysis of the carbon particles limited and is at 350 ° C.
  • Heat treatment is 150 ° C.
  • Impregnation step added amount less than that in the subsequent
  • Impregnation step and as a binder system is carried out in the impregnation step, an addition of 2 -3% by weight, while added as a binder later 7-10% by weight.
  • Impregnation step and as a binder system is carried out in the impregnation step, an addition of 3 to 5% by weight, while added as a binder later 6 to 8% by weight.
  • the limits of the specified ranges are included.
  • a heat treatment is necessary to remove the carrier liquid water so far that the emulsified substances or the dissolved substances settle in the pores or the pore necks. As a result, the pores are occupied or the
  • processing into compacts may be by known methods, for example as described in WO 02 / 50219A1 or in AT005765U1, or by any method suitable for processing coal particles with a water containing binder system into compacts.
  • Carbon particles containing a water-insoluble and / or water-repellent substance adding water-containing binder systems in the production of compacts reduces the process cost compared to conventional methods such as according to WO02 / 50219A1.
  • the avoidance of water absorption of the coal during the production of pellets with water-containing binder systems on the one hand reduces the specific consumption of coal
  • the impregnation step depending on the nature of the substance used for the impregnation, there may be a reduction in the C0 2 reactivity of the semi-coke or the coke obtained from pellets after pyrolysis of the compacts in a melter gasifier.
  • a low CO 2 reactivity is desired in the operation of a melter gasifier so that the semi-coke in the fixed bed of the melter gasifier or the coke in the fixed bed of a blast furnace remain stable from the charge to the bed surface until reaching the immediate gasification zone in the area of the oxygen nozzles or the tuyeres and thereby promote the permeability of the fixed bed with respect to the gassing and the drainage of molten phases.
  • the reduction in the C0 2 reactivity of the coke or of the coke is achieved in that the internal surface of the pores of the carbon particles in the pressed article from the impregnated subset of the carbon particles can no longer be coated by the impregnation with a binder containing reactivity-promoting substances .
  • the binder component molasses contains alkalis as reactivity-promoting substances. If the impregnation, for example with substances containing bitumen or waxes, prevents molasses coating the inner surface of the pores, the C0 2 reactivity is thus reduced compared to semi-coke or coke obtained by a process without impregnation step.
  • a minor proportion of undersized coke is commonly used in the COREX® or Fl N EX® process for the production of pig iron in a fixed bed of a melter gasifier
  • Thermo-mechanical stability refers to a test method in which the compacts are subjected to a thermal shock procedure, and the resulting semi-coke is subjected to drumming.
  • the improved thermo-mechanical stability is represented by the fact that the proportion of coarse grain of the tumbled Halbkokses compared to conventionally produced compacts by the inventive
  • the inventive method for the production of compacts makes it possible to reduce the consumption of binder or to curb the harmful effects of reactant-promoting binder components even in the production of coke using compacts of the starting materials.
  • the compacts may be, for example, briquettes or slugs from a compaction.
  • the pellets contain up to 97% by weight of carbon particles,
  • 0.5% by weight preferably 1% by weight, and the upper limit thereof is 5% by weight, preferably 3% by weight, particularly preferably 2% by weight.
  • the 15% by weight of the components of a binder system are to be understood as meaning that the water is not included as a component of the binder system, ie the 15% by weight relates to the nonaqueous components of the binder
  • the compact also contains iron or iron oxide-containing particles.
  • Such particles can, for example, in the pig iron or
  • Table 1 shows the evaluation of tests for the production of compacts with regard to the drop resistance (SF) and the puncture strength (PDF) of the pellets during a test campaign.
  • the pellets are after the
  • the compacts were prepared so that all carbon particles were impregnated with water - with the addition of 3% by weight of water over a period of one minute.
  • the compacts are briquettes.
  • the water-containing binder system a system consisting of molasses and quicklime was used.
  • the molasses itself had a water content of 20
  • bitumen For impregnation bitumen was used as impregnating agent. As bitumen Mexphalte 55 Shell was used.
  • the kneader used by Koeppern for kneading was a vertical cylindrical container, through which a centrally rotating shaft is guided with kneading arms.
  • the production of the green compacts was carried out by means of a trial roller press type 52/10 from Koeppern.
  • the selected pillow-shaped format for the green compacts had a nominal volume of 20 cm 3 .
  • the task of the material to be pressed was done by means of gravitational arbiter. From the experimental roller press associations were made consisting of several green compacts. In these Associations are green compacts both in the margins of the associations as well as in the middle of the associations.
  • the bandages are broken along the dividing seams between the individual green compacts.
  • the associations break up during discharge from the trial roller press into individual green compacts.
  • the kneaded mixtures were subjected to pressing as a material to be pressed in the trial roll press to produce green compacts.
  • the resulting green compacts are still soft - which is indicated in the jargon by the word "green” - and are subjected to curing to arrive at the finished compact This curing, for example, by at least partial drying by storage in air and / or a thermal treatment done.
  • Fall and dot compressive strength measurements were repeated after 1 hour of air curing and after 24 hours air hardening. The results of these studies are shown in the columns containing "1 h" and "24 h".
  • a 2 kg sample of green compacts or compressed by drying in air or by thermal drying compacts four times through a downpipe from a height of 5 m into a container the bottom is formed in the form of a solid steel plate.
  • the drop tube has a diameter of 200 mm and the collecting container has a diameter of 260 mm.
  • the thickness of the steel plate is 12 mm.
  • the evaluation of the fall test by sieve analysis takes place after the second and fourth fall.
  • the numerical values for falling resistance SF in Table 1 indicate in each case the fraction of the grain fraction> 20 mm after four falls.
  • a type 469 testing machine from ERICHSEN was used for the determination of the dot compressive strength.
  • the lower edition is formed by a round plate of 80 mm diameter and the upper by a horizontal round iron of 10 mm diameter.
  • Feed rate for the upper support is 8 mm / min.
  • Puncture resistance PDF is considered a maximum load bearing of a green
  • Table 1 indicate the average point compressive strength at break due to point pressure loading in Newton.
  • six green compacts or compacts from the middle region and six green compacts or pellets from the edge region of the bandages obtained in the trial roller press were examined. From the data obtained in these studies, averages were calculated, with the minimum and maximum values, respectively, being disregarded.
  • Ensham coal comes from Ensham Resources of Queensland, Australia. This material to be processed into compacts was processed into compacts as shown below in FIG. 1 for coal 1.
  • Binder system was used in an amount of 12% by weight, based on the weight of the material to be processed into compacts.
  • the molasses used itself contained a proportion of 20% by weight of water.
  • Binder system was in addition to molasses still from 2.5% by weight, based on the weight of the material to be processed to compacts, quicklime.
  • the amount of bitumen used was 2.1% by weight, based on the weight of the material to be processed into compacts, or 3% by weight, based on the Ensham coal to be impregnated.
  • the coal temperature was 108 ° C before admixing the bitumen.
  • the impregnated Ensham coal was combined with the Blackwater coal.
  • the processing was carried out analogously to experiment 1, but the molasses in the water-containing binder system in an amount of 8% by weight, based on the weight of the material to be processed to compacts used.
  • the molasses used itself contained a water content of 20% by weight.
  • the water-containing binder system consisted of 2% by weight, based on the weight of the material to be processed into compacts, of burnt lime.
  • Branntkalkabeabe was still 2% water, based on the weight of the
  • compacts produced according to the invention have higher puncture pressure resistance compared to prior art compacts, while their lint resistance is comparable to the lint resistance of prior art compacts.
  • the partial amount of carbon particles to be impregnated may also be two or more
  • FIG. 1 shows a conventional process for producing pellets without
  • FIG. 2 shows a method according to the invention for the production of compacts with impregnation step, wherein two types of coal are used.
  • FIG. 3 shows a method according to the invention for the production of compacts having an impregnation step, wherein only one type of coal is used.
  • the coal 1 to be processed into compacts in this case briquettes, is subjected to drying 2 and then brought to a desired grain size by granulation 3.
  • the carbon particles thus obtained are then followed by the addition of a water-containing binder system 4, in this case molasses, optionally with the addition of solid, finely divided binder components such as hydrated lime or quicklime, with mixing 5, wherein the mixing 5 may be one or more stages.
  • the mixture thus obtained is subjected to kneading 6 and pressing 7.
  • the product 9 obtained after curing 8 is the briquette.
  • inventive method according to Figure 2 differs from the method shown in Figure 1 in that a subset of the A for the production of
  • Carbon particles 12 serving for pellets is subjected to an impregnation step 10 in which it is impregnated with a substance 11, the impregnating agent. After this impregnation step 10, mixing takes place with the binder system 4 containing water and with a subset B of the carbon particles 13 serving to produce the compacts, as well as the further processing of the resulting mixture according to FIG. 1.
  • the coal particles serving to produce the compacts thus consist of the subset A 12 and the subset B 13.
  • Subset A 12 and subset B 13 belong to different types of coal.
  • the subsets A 12 and B 13 of the carbon particles serving to produce the compacts belong to the same type of coal.
  • a coal 1 to be processed is subjected to drying 2 and then brought to a desired grain size by graining 3.
  • the carbon particles thus obtained are subjected to a sieve 14,
  • the coarse-grained fraction obtained is a subset A of serving for the preparation of the compacts coal particles 12 a
  • Impregnation step 10 in which they with substance 1 1, the
  • Impregnating agent is impregnated. After this impregnation step 10, the mixing 5 is carried out with the binder system 4 containing water and with a subset B of the coal particles 13 serving to produce the compacts, as well as
  • the subset B of the coal particles 13 serving to produce the compacts is the fine-grained fraction obtained in the screening 14.
  • a heat treatment 12 may be performed prior to mixing with the water containing binder system 4.
  • the addition of the molasses / quicklime binder system to the product to be processed can be done by adding molasses and quicklime at the same time, or by adding quicklime and molasses in succession.
  • impregnating agent bitumen it is preferred in the use of the impregnating agent bitumen, that at first a portion of the envisaged for the production of the pellets molasses is added, then a mixture is carried out, and then quicklime is added.
  • Burnt lime the lime for its reactions can also use moisture from the molasses.

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Abstract

La présente invention concerne un procédé de production de produits pressés contenant des particules de carbone, les produits pressés ainsi obtenus et leur utilisation dans des procédés de production de fonte brute dans un lit fixe ou dans des procédés de production de porteurs de carbone pour des procédés de production de fonte brute dans un lit fixe. Selon l'invention, une partie de la matière, sous forme de particules de carbone, à transformer en produits pressés est imprégnée à l'aide d'une substance, avant que ladite matière à transformer en produits pressés ne soit mélangée avec un système liant contenant de l'eau, et finalement transformée en produits pressés.
PCT/EP2011/061614 2010-07-12 2011-07-08 Procédé de production de produits pressés contenant des particules de carbone WO2012007383A1 (fr)

Priority Applications (8)

Application Number Priority Date Filing Date Title
BR112013000782A BR112013000782A2 (pt) 2010-07-12 2011-07-08 método para produzir artigos prensados contendo partículas de carvão
RU2013105720/04A RU2583432C2 (ru) 2010-07-12 2011-07-08 Способ изготовления прессованных изделий, содержащих частицы угля
KR1020137003564A KR101946343B1 (ko) 2010-07-12 2011-07-08 석탄 입자를 함유하는 압축물을 생산하기 위한 방법
CN201180034050.6A CN102971403B (zh) 2010-07-12 2011-07-08 含煤颗粒的压制品的制备方法
US13/809,931 US20130160607A1 (en) 2010-07-12 2011-07-08 Method for producing pressed articles containing coal particles
CA2805000A CA2805000A1 (fr) 2010-07-12 2011-07-08 Procede de production de produits presses contenant des particules de carbone
UAA201300421A UA110482C2 (en) 2010-07-12 2011-08-07 Method for producing pressed articles containing coal particles
ZA2013/00040A ZA201300040B (en) 2010-07-12 2013-01-02 Method for producing pressed articles containing coal particles

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ATA1180/2010A AT510136B1 (de) 2010-07-12 2010-07-12 Verfahren zur herstellung von kohlepartikeln enthaltenden presslingen
ATA1180/2010 2010-07-12

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CA (1) CA2805000A1 (fr)
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UA (1) UA110482C2 (fr)
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WO2014031801A1 (fr) * 2012-08-22 2014-02-27 Hoffman Glenn E Production de fonte en gueuse
WO2014031802A1 (fr) * 2012-08-22 2014-02-27 Hoffman Glenn E Production de fonte en gueuse à partir de matériaux de base contenant du fer
KR20160025021A (ko) * 2013-06-28 2016-03-07 애브비 인코포레이티드 결정성 브로모도메인 억제제
CN111363599A (zh) * 2020-04-15 2020-07-03 宁夏中润工贸有限公司 一种新型型焦粘合剂及其制备型焦的方法

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AT510135B1 (de) * 2010-07-12 2016-11-15 Primetals Technologies Austria GmbH Verfahren zur herstellung von kohlepartikeln enthaltenden presslingen
JP6062316B2 (ja) * 2013-04-24 2017-01-18 株式会社神戸製鋼所 成型固形燃料の製造方法
CN106497624A (zh) * 2016-11-16 2017-03-15 神雾环保技术股份有限公司 制备电石用半焦成型球的专用系统与方法
CN106479576A (zh) * 2016-12-13 2017-03-08 神雾环保技术股份有限公司 一种流化床煤气化和电石冶炼耦合的系统和方法
CN108219808B (zh) * 2018-01-31 2023-08-15 神木市锦丰源洁净煤科技有限公司 一种气固两相错流的内热式竖立混煤热解炉
CN114163060A (zh) * 2022-02-11 2022-03-11 华能（天津）煤气化发电有限公司 一种适用于igcc电站合成气洗涤水及渣水处理的工艺
CN115772432B (zh) * 2023-02-13 2023-04-28 山西潞安环保能源开发股份有限公司 一种低阶煤改性方法及喷吹煤及配煤系统

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US2310095A (en) * 1940-05-23 1943-02-02 Ernest T Lance Production of lignite briquettes
DE3321683A1 (de) * 1982-06-22 1983-12-22 Gelsenberg Ag, 4300 Essen Verfahren zur herstellung von agglomerierten brennstoffen
EP0368041A1 (fr) * 1988-10-29 1990-05-16 Th. Goldschmidt AG Briquettes de charbon ayant une absorption d'eau diminuée et procédé pour sa préparation
WO1999001583A1 (fr) 1997-07-04 1999-01-14 Voest-Alpine Industrieanlagenbau Gmbh Procede d'utilisation de fines dans un gazeificateur a fusion
WO2002050219A1 (fr) 2000-12-19 2002-06-27 Posco Briquette de charbon d'une resistance elevee et procede de briquetage associe
AT5765U1 (de) 2001-09-14 2002-11-25 Voest Alpine Ind Anlagen Verfahren zur verhüttung eines metallhaltigen einsatzstoffes, vorzugsweise zur erzeugung von roheisen und/oder flüssigen stahlvorprodukten
WO2004020555A1 (fr) * 2002-09-02 2004-03-11 Posco Briquettes de charbon pour methode de reduction avec fusion, et procede de fabrication de ces briquettes
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WO2014031801A1 (fr) * 2012-08-22 2014-02-27 Hoffman Glenn E Production de fonte en gueuse
WO2014031802A1 (fr) * 2012-08-22 2014-02-27 Hoffman Glenn E Production de fonte en gueuse à partir de matériaux de base contenant du fer
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CN111363599A (zh) * 2020-04-15 2020-07-03 宁夏中润工贸有限公司 一种新型型焦粘合剂及其制备型焦的方法

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KR101946343B1 (ko) 2019-02-11
US20130160607A1 (en) 2013-06-27
CN102971403A (zh) 2013-03-13
ZA201300040B (en) 2018-12-19
RU2583432C2 (ru) 2016-05-10
RU2013105720A (ru) 2014-08-20
KR20130043187A (ko) 2013-04-29
CN102971403B (zh) 2015-07-29
BR112013000782A2 (pt) 2016-05-24
AT510136A1 (de) 2012-01-15
CA2805000A1 (fr) 2012-01-19
AT510136B1 (de) 2016-11-15
UA110482C2 (en) 2016-01-12

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