CN102071271B - Blast-furnace ironmaking raw material hot delivery and hot charging process and equipment - Google Patents
Blast-furnace ironmaking raw material hot delivery and hot charging process and equipment Download PDFInfo
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- CN102071271B CN102071271B CN200910223598XA CN200910223598A CN102071271B CN 102071271 B CN102071271 B CN 102071271B CN 200910223598X A CN200910223598X A CN 200910223598XA CN 200910223598 A CN200910223598 A CN 200910223598A CN 102071271 B CN102071271 B CN 102071271B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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- Y02W30/50—Reuse, recycling or recovery technologies
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Abstract
The invention provides a blast-furnace ironmaking raw material hot delivery and hot charging process and blast-furnace ironmaking raw material hot delivery and hot charging equipment. The process comprises the following steps of: delivering mature red coke from a coke oven carbonization chamber, thermally sintered ore produced by a sintering machine and thermal pellet produced by a pellet firing machine into a transfer tank through a delivery trolley; taking the transfer tank as a buffer and heat insulation container for the red coke, thermally sintered ore and thermal pellet respectively; and thermally charging the blast furnace by utilizing the buffer and heat insulation functions of the transfer tank. The invention has the advantages that: thermal energy is saved, the coke ratio is reduced and pig iron yield is improved.
Description
Technical field
The invention belongs to field of metallurgy, specifically, relate to a kind of blast furnace ironmaking raw material hot delivery and hot charging technology and equipment.
Background technology
At present, the iron work iron-smelting raw material all is the blast furnace of packing at normal temperatures.Though comparatively convenient in operation, slatterned a large amount of heat energy.And, also to increase relevant devices for the cooling of various raw materials.Operational outfit needs mass energy, reheats for them again behind the entering blast furnace.Specifically, the energy of three link wastes is huge below.
The first, in the prior art, coking workshop, coke-oven plant all is provided with coke processing system, with red Jiao who releases in the coke furnace carbonization chamber, through wet quenching or dry quenching(of coke), conveying, screening and storage, is sent to iron work.
The advantage of conventional wet quenching is that technology is simple, and the plant area area is little, and initial cost is less, and production operation is more convenient.But the shortcoming of coke wet quenching is also very obvious, one of which, and a large amount of sensible heats of red Jiao are wasted in coke wet quenching, and every refining 1t coke consumption heat is about 3.15～3.36GJ, and wherein the heat of coke wet quenching waste is 1.49GJ, accounts for 45% of wastage in bulk or weight heat; Its two, the acute cooling of red anxiety can make the coke crackle increase during coke wet quenching, has reduced the thermostability of coke; Coke quality is reduced, and produce a large amount of broken Jiao and burnt foam, count roughly 15%; Value is counted roughly about 150 yuan of losses; Coke moisture content is high, fluctuation is big, and a large amount of heats of loss are unfavorable for blast furnace ironmaking production when going into stove; Its three, the entrainment with steam that coke wet quenching produces remains in corrosive mediums such as phenol in the coke, cyanogen, sulfide, object around corroding causes big area atmospheric pollution on every side, and along with the increase of coke quenching water cycle index, this erosion and pollute can be more and more serious; Its four, the entrainment with steam that coke wet quenching produces amounts of dust, reaches 200～400g/t usually, both contaminate environment was again a kind of waste.
For solving the problem that coke wet quenching exists, coking worker in various countries' has carried out unremitting effort, and coke wet quenching device and coke wet quenching technology are constantly improved, and low moisture extinguishing technique and pressure steam extinguishing technique have occurred.Though alleviated the deficiency of conventional wet quenching in some aspects, can't fundamentally solve the problem of aspects such as energy dissipation, environmental pollution and coke quality difference.
Dry quenching(of coke) is once look to being used widely, but the operating experience of part coke-oven plant and anticipation is opposite, and cost of investment is big, working cost is high, has increased the query that the STRENGTH ON COKE dry quenching(of coke) is equipped feasibility, and this shortcoming is particularly outstanding in large-scale factory.
The second, agglomerate is burning till the back when tail unloads on the sinter machine, and its temperature is at 600～1000 ℃; In the technology of prior art, to be cooled to below 150 ℃; This arts demand investment cooling apparatus, operation simultaneously also needs electric energy, and the heat of cooling 1t agglomerate waste is 0.93GJ.
The 3rd, pelletizing is through after the firing section roasting, all ripe section stay for some time; Make its chemical reaction, recrystallization, recrystallize perfect, get into cooling section then and tentatively cool off, the pelletizing temperature is 500～1000 ℃; Drain into final cooling section at last, pellet is cooled to about 100 ℃, and this technology need be invested cooling apparatus equally; Operation simultaneously also needs electric energy, and the heat of cooling 1t pellet waste is 1.22GJ.
The 4th, iron-smelting blast furnace is because the instability of feed stock for blast furnace moisture (free-water) usually causes the working of a furnace unstable, and production is affected; The on the low side of throat temperature causes the crystal water in the raw material not decompose out faster, and the crystal water to 500 in the furnace charge～600 ℃ decomposition is rapidly all removed crystal water and will be reached 800～1000 ℃.High-temperature zone decomposition and crystallization water is disadvantageous to blast-furnace smelting, and it not only consumes coke, and absorbs the high-temperature zone heat, increases heat rejection, reduces temperature of the furnace hearth.
Summary of the invention
The objective of the invention is,, a kind of brand-new blast furnace ironmaking raw material hot delivery and hot charging technology and equipment are provided to the deficiency that exists in the above-mentioned prior art.
Blast furnace ironmaking raw material hot delivery and hot charging technology of the present invention may further comprise the steps:
(1) ripe red Jiao who coke furnace carbonization chamber is released is transported in the red burnt transfer jar via red burnt haul dolly, and the heat sinter of sinter machine output is transported in the heat sinter transfer jar via heat sinter haul dolly; The hot-bulb nodulizing of pellet firing machine output is transported in the hot-bulb nodulizing transfer jar via hot-bulb nodulizing haul dolly;
(2) with above-mentioned transfer jar respectively as buffering, the insulating container of red Jiao, heat sinter and hot-bulb nodulizing, with red Jiao, heat sinter and hot-bulb nodulizing according to the ratio of components of lump ore successively, send into blast furnace through the haul lifting gear in batches;
Utilize buffering, the insulation effect of above-mentioned transfer jar, the red burnt temperature that control gets into blast furnace is 100 ℃～1200 ℃, and the agglomerate temperature is 100 ℃～1000 ℃, and the pellet temperature is 100 ℃～1000 ℃, and the lump ore temperature is a normal temperature.
Blast furnace ironmaking raw material hot delivery and hot charging equipment of the present invention comprises with lower device: coke furnace carbonization chamber, sinter machine, pellet firing machine; Blast furnace, red burnt transfer jar, heat sinter transfer jar; Hot-bulb nodulizing transfer jar; Red burnt haul dolly, heat sinter haul dolly, hot-bulb nodulizing haul dolly and haul lifting gear;
Coke furnace carbonization chamber links to each other with red burnt transfer jar via red burnt haul dolly, and sinter machine links to each other with heat sinter transfer jar via heat sinter haul dolly, and pellet firing machine links to each other with hot-bulb nodulizing transfer jar via hot-bulb nodulizing haul dolly;
Red burnt transfer jar, heat sinter transfer jar, hot-bulb nodulizing transfer jar link to each other with blast furnace through the haul lifting gear respectively.
Described transfer jar can adopt following structure: its liner is impact-resistant lagging material, jar mouthful establishes sealing cover, and sealing cover is provided with lagging material towards the position of jar, is shaped as square, rectangle, ellipse, cylindrical or circular.
Described haul lifting gear can be vertical-horizontal lifting gear or skew bridge lifting gear.
Compared with prior art, the present invention has following advantage:
1, temperature is that 100 ℃～1200 ℃ hot red Jiao, temperature are 100 ℃～1000 ℃ the pellet blast furnace of directly packing into 100 ℃～1000 ℃ agglomerate, temperature; Reduced the raw material production energy consumption; The raw material sensible heat gets in the stove, has improved ironmaking efficient, has reduced construction investment; Wherein the atmosphere polluting problem that quenching brings has been avoided in coking; The coke strenth quality improves, and M40 improves 3%～8%, and M10 improves 0.3%～0.8%, under the constant condition of coke quality, but coking polygamy 10%～20% weak caking coal, 0.38m also can economize on water
3/ t is burnt.
Energy-saving effect is remarkable, generally smelts 1t pig iron needs: 1.5～2t iron ore, 0.4～0.5t coke, 0.2～0.4t solvent; Wherein the ratio of components of iron ore is agglomerate 75%, pellet 15%, lump ore 10%.The hot heat of going into the saving of the every smelting of the stove 1t pig iron of coke, agglomerate, pellet is:
Normal temperature is gone into the heat of the 10% moisture evaporation needs of oven coke:
0.5t×10％×1000×0.226GJ＝0.113GJ
Hot coke is gone into the sensible heat of stove: 0.5t * 1.49GJ=0.745GJ
Hot agglomerate is gone into the sensible heat of stove: 2t * 75% * 0.68GJ=1.020GJ
Hot pellet is gone into the sensible heat of stove: 2t * 15% * 0.62GJ=0.186GJ
Being converted to coke is:
(0.113GJ+0.745GJ+1.02GJ+0.186GJ) * 10
9/ 31.61 * 10
6=65.30 kilograms of coke
Reduce 150 yuan of broken Jiao and burnt foam increments
2, the blast furnace internal temperature is because the corresponding raising of effect that iron-smelting raw material high temperature is packed into; Gas temperature improves, and surface chemical reaction speed and velocity of diffusion are all accelerated with the rising of temperature.Therefore, high temperature is favourable to the reduction of quickening iron ore, and the iron ore reduction reaction has prolonged the reduction reaction time in advance, has accelerated reduction rate, has increased production capacity; Counting roughly increases about 30%.Calculate iron increment output investment ratio per ton and about 200 yuan of saving working cost value according to output investment ratio.
3, the boiling point of metals such as potassium, sodium, zinc is low; Its compound volatilizees after in blast furnace, being reduced into metal in advance immediately, and is most of with outside the coal gas effusion stove, having reduced the circulation accumulation; Protect the intensity of ore and coke and the ventilation property of furnace charge, reduced furnace lining dross phenomenon;
4, reduce the solid iron carburization reaction that generates in advance, accelerated cementation process.
Description of drawings
Fig. 1 is the synoptic diagram of blast furnace ironmaking raw material hot delivery and hot charging equipment of the present invention.
Nomenclature: 1-coke furnace carbonization chamber; The 2-sinter machine; The 3-pellet firing machine; The 4-blast furnace; The red burnt transfer jar of 10-; 20-heat sinter transfer jar; 30-hot-bulb nodulizing transfer jar; The red burnt haul dolly of 100-; 200-heat sinter haul dolly; 300-hot-bulb nodulizing haul dolly; 400-haul lifting gear.
Embodiment
Referring to accompanying drawing 1, the blast furnace ironmaking raw material hot delivery and hot charging equipment of this embodiment comprises with lower device:
Coke furnace carbonization chamber 1, sinter machine 2, pellet firing machine 3, blast furnace 4, red burnt transfer jar 10, heat sinter transfer jar 20, hot-bulb nodulizing transfer jar 30, red burnt haul dolly 100, heat sinter haul dolly 200, hot-bulb nodulizing haul dolly 300 and haul lifting gear 400;
Coke furnace carbonization chamber 1 links to each other with red burnt transfer jar 10 via red burnt haul dolly 100; Sinter machine 2 links to each other with heat sinter transfer jar 20 via heat sinter haul dolly 200, and pellet firing machine 3 links to each other with hot-bulb nodulizing transfer jar 30 via hot-bulb nodulizing haul dolly 300;
Red burnt transfer jar 10, heat sinter transfer jar 20, hot-bulb nodulizing transfer jar 30 link to each other with blast furnace 4 through haul lifting gear 400 respectively.
In this embodiment, the structure of transfer jar is following: its liner is impact-resistant lagging material, jar mouthful establishes sealing cover, and sealing cover is provided with lagging material towards the position of jar, and that shape can be is square, rectangle, ellipse, cylindrical or circular.
In this embodiment, haul lifting gear 400 adopts vertical-horizontal lift technique or skew bridge lift technique.
The blast furnace ironmaking raw material hot delivery and hot charging technology of this embodiment may further comprise the steps:
Ripe red Jiao that coke furnace carbonization chamber 1 is released is transported in the red burnt transfer jar 10 via red burnt haul dolly 100, and the heat sinter of sinter machine 2 outputs is transported in the heat sinter transfer jar 20 via heat sinter haul dolly 200; The hot-bulb nodulizing of pellet firing machine 3 outputs is transported in the hot-bulb nodulizing transfer jar 30 via hot-bulb nodulizing haul dolly 300.
With above-mentioned transfer jar 10,20 and 30 respectively as buffering, the insulating container of red Jiao, heat sinter and hot-bulb nodulizing, with red Jiao, heat sinter and hot-bulb nodulizing according to the ratio of components of lump ore successively, send into blast furnace 4 through haul lifting gear 400 in batches.
Utilize buffering, the insulation effect of above-mentioned transfer jar 10,20 and 30, the red burnt temperature that control gets into blast furnace is 100 ℃～1200 ℃, and the agglomerate temperature is 100 ℃～1000 ℃, and the pellet temperature is 100 ℃～1000 ℃, and the lump ore temperature is a normal temperature.
Adopt the ironmaking of this embodiment, obtained following beneficial effect:
1. reduce coke ratio 16.3%.
2. increase furnace processor 30%.
3. raising iron quality.
4. reduce the building equipment investment.
5, improve investment ratio.
Claims (4)
1. blast furnace ironmaking raw material hot delivery and hot charging technology is characterized in that: may further comprise the steps:
A, ripe red Jiao that coke furnace carbonization chamber (1) is released are transported in the red burnt transfer jar (10) via red burnt haul dolly (100), and the heat sinter of sinter machine (2) output is transported in the heat sinter transfer jar (20) via heat sinter haul dolly (200); The hot-bulb nodulizing of pellet firing machine (3) output is transported in the hot-bulb nodulizing transfer jar (30) via hot-bulb nodulizing haul dolly (300);
B, with above-mentioned transfer jar (10,20,30) respectively as buffering, the insulating container of red Jiao, heat sinter and hot-bulb nodulizing, with red Jiao, heat sinter and hot-bulb nodulizing according to the ratio of components of lump ore successively, send into blast furnace (4) by haul lifting gear (400) in batches;
Utilize buffering, the insulation effect of above-mentioned transfer jar (10,20,30), the red burnt temperature that control gets into blast furnace (4) is 100 ℃～1200 ℃, and the agglomerate temperature is 100 ℃～1000 ℃, and the pellet temperature is 100 ℃～1000 ℃, and the lump ore temperature is a normal temperature.
2. a blast furnace ironmaking raw material hot delivery and hot charging equipment is characterized in that: comprise with lower device: coke furnace carbonization chamber (1), sinter machine (2); Pellet firing machine (3), blast furnace (4), red burnt transfer jar (10); Heat sinter transfer jar (20); Hot-bulb nodulizing transfer jar (30), red burnt haul dolly (100), heat sinter haul dolly (200), hot-bulb nodulizing haul dolly (300) and haul lifting gear (400);
Coke furnace carbonization chamber (1) links to each other with red burnt transfer jar (10) via red burnt haul dolly (100); Sinter machine (2) links to each other with heat sinter transfer jar (20) via heat sinter haul dolly (200), and pellet firing machine (3) links to each other with hot-bulb nodulizing transfer jar (30) via hot-bulb nodulizing haul dolly (300);
Red burnt transfer jar (10), heat sinter transfer jar (20), hot-bulb nodulizing transfer jar (30) link to each other with blast furnace (4) through haul lifting gear (400) respectively.
3. blast furnace ironmaking raw material hot delivery and hot charging equipment according to claim 2; It is characterized in that: the liner of described transfer jar (10,20,30) is impact-resistant lagging material; The jar mouth is established sealing cover, and sealing cover is provided with lagging material towards the position of jar, is shaped as square, oval or circular.
4. according to claim 2 or 3 described blast furnace ironmaking raw material hot delivery and hot charging equipment, it is characterized in that: described haul lifting gear (400) is vertical-horizontal lifting gear or skew bridge lifting gear.
Priority Applications (18)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910223598XA CN102071271B (en) | 2009-11-24 | 2009-11-24 | Blast-furnace ironmaking raw material hot delivery and hot charging process and equipment |
| UAA201203393A UA102468C2 (en) | 2009-11-24 | 2010-08-30 | Method for production of cast iron and method for conveying and charging of hot raw materials (variants) and equipment thereof |
| EP10832579.6A EP2505674B1 (en) | 2009-11-24 | 2010-08-30 | Method for iron-making with full oxygen and hydrogen-rich gas and equipment thereof |
| KR1020127011580A KR101324254B1 (en) | 2009-11-24 | 2010-08-30 | Method and apparatus for ironmaking using full-oxygen hydrogen-rich gas |
| IN1747DEN2012 IN2012DN01747A (en) | 2009-11-24 | 2010-08-30 | |
| BR112012005690-5A BR112012005690B1 (en) | 2009-11-24 | 2010-08-30 | HYDROGEN RICH IRON GAS IRON PRODUCTION METHOD AND APPARATUS, AND USED FOR HOT TRANSFER AND HOT LOADING OF THE HYDROGEN IRON AND IRRESHIUM IRON PRODUCTION IRON PRODUCTION MATERIAL OXYGEN AND, AND APPARATUS AND METHOD USED FOR HOT TRANSFER AND HOT LOADING OF IRON PRODUCTION MATERIAL. |
| AU2010324338A AU2010324338B2 (en) | 2009-11-24 | 2010-08-30 | Method for iron-making with full oxygen and hydrogen-rich gas and equipment thereof |
| MYPI2012000733A MY161677A (en) | 2009-11-24 | 2010-08-30 | Method for iron-making with full oxygen and hydrogen-rich gas and equipment thereof |
| US13/497,855 US8986601B2 (en) | 2009-11-24 | 2010-08-30 | Method for iron-making with full oxygen and hydrogen-rich gas and equipment thereof |
| JP2012539166A JP5638621B2 (en) | 2009-11-24 | 2010-08-30 | Total oxygen hydrogen rich coal gas iron making method and apparatus |
| RU2012110031/02A RU2535103C2 (en) | 2009-11-24 | 2010-08-30 | Method of cast-iron manufacture using oxygen and hydrogen-rich gas, and equipment for its implementation |
| MX2012002313A MX348755B (en) | 2009-11-24 | 2010-08-30 | Method for iron-making with full oxygen and hydrogen-rich gas and equipment thereof. |
| CA2773589A CA2773589C (en) | 2009-11-24 | 2010-08-30 | Method for iron-making with full oxygen and hydrogen-rich gas and equipment thereof |
| PCT/CN2010/076462 WO2011063672A1 (en) | 2009-11-24 | 2010-08-30 | Method for iron-making with full oxygen and hydrogen-rich gas and equipment thereof |
| SA110310833A SA110310833B1 (en) | 2009-11-24 | 2010-11-06 | Method and apparatus for ironmaking using full-oxygen hydrogen-rich gas |
| ARP100104302 AR079117A1 (en) | 2009-11-24 | 2010-11-23 | METHOD AND APPARATUS FOR THE MANUFACTURE OF IRON USING A GAS RICH IN HYDROGEN AND TOTAL OXYGEN |
| ZA2012/01421A ZA201201421B (en) | 2009-11-24 | 2012-02-27 | Method for iron-making with full oxygen and hydrogen-rich gas and equipment thereof |
| US14/622,105 US9581387B2 (en) | 2009-11-24 | 2015-02-13 | Method for iron-making with full oxygen and hydrogen-rich gas and equipment thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910223598XA CN102071271B (en) | 2009-11-24 | 2009-11-24 | Blast-furnace ironmaking raw material hot delivery and hot charging process and equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102071271A CN102071271A (en) | 2011-05-25 |
| CN102071271B true CN102071271B (en) | 2012-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910223598XA Expired - Fee Related CN102071271B (en) | 2009-11-24 | 2009-11-24 | Blast-furnace ironmaking raw material hot delivery and hot charging process and equipment |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102071271B (en) |
| UA (1) | UA102468C2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102191344A (en) * | 2010-03-10 | 2011-09-21 | 山东铁雄能源煤化有限公司 | Hot delivery and hot charging process of blast furnace iron making raw material and device thereof |
| CN102839244B (en) * | 2012-09-06 | 2014-09-03 | 莱芜钢铁集团有限公司 | Device and method for hot loading of metallized pellets of rotary hearth furnace into blast furnace |
| CN113251810A (en) * | 2021-04-27 | 2021-08-13 | 华北理工大学 | Metallurgical dust rotary kiln sediment waste heat transfer device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2633117B2 (en) * | 1976-07-23 | 1978-07-27 | Fa. Carl Still, 4350 Recklinghausen | Method and device for smelting ore, in particular iron ore |
| SU1126605A1 (en) * | 1982-09-17 | 1984-11-30 | Донецкий научно-исследовательский институт черной металлургии | Method for controlling blast furnace smelting |
| CN1487097A (en) * | 2003-06-23 | 2004-04-07 | 安徽工业大学 | Blast furnace iron-making technique with hydrogen-rich fuel gas, pure oxygen and thus high efficiency and low CO2 exhaust |
-
2009
- 2009-11-24 CN CN200910223598XA patent/CN102071271B/en not_active Expired - Fee Related
-
2010
- 2010-08-30 UA UAA201203393A patent/UA102468C2/en unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2633117B2 (en) * | 1976-07-23 | 1978-07-27 | Fa. Carl Still, 4350 Recklinghausen | Method and device for smelting ore, in particular iron ore |
| SU1126605A1 (en) * | 1982-09-17 | 1984-11-30 | Донецкий научно-исследовательский институт черной металлургии | Method for controlling blast furnace smelting |
| CN1487097A (en) * | 2003-06-23 | 2004-04-07 | 安徽工业大学 | Blast furnace iron-making technique with hydrogen-rich fuel gas, pure oxygen and thus high efficiency and low CO2 exhaust |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102071271A (en) | 2011-05-25 |
| UA102468C2 (en) | 2013-07-10 |
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