CN103880472A - Sludge porous material and preparation method thereof - Google Patents
Sludge porous material and preparation method thereof Download PDFInfo
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- CN103880472A CN103880472A CN201410059284.1A CN201410059284A CN103880472A CN 103880472 A CN103880472 A CN 103880472A CN 201410059284 A CN201410059284 A CN 201410059284A CN 103880472 A CN103880472 A CN 103880472A
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Abstract
The invention provides a sludge porous material and a preparation method thereof. The porous materials is prepared from the following raw materials in percentage by weight: 30-50% of sludge, 30-50% of gangue, 10-30% of shale, 2-8% of natural zeolite, 0.2-1.5% of dolomite, 0.2-1.5% of sodium carbonate and 0.2-0.8% of ferric oxide; the preparation method of the sludge porous material comprises the steps of raw material processing, granulating and drying, and ceramsite firing; the porous materials which is porous, high in specific surface area and lightweight can be prepared by taking an organic matter in municipal sludge as a gas generating bulking component of the porous material and the sludge of printing and dyeing as well as papermaking which has the characteristic of abundant fiber component as a pore filling agent, and therefore, the sludge is utilized efficiently, the problem of recycling the sludge is solved, and the product can be applied to a plurality of fields such as building materials, chemical engineering, land reclamation and packings; in short, the development of economic construction is promoted while the sludge is utilized.
Description
Technical field
The processing recycling field that the present invention relates to mud, particularly relates to a kind of mud porous material and preparation method thereof.
Background technology
Be accompanied by the quickening of Urbanization in China, municipal sewage treatment amount is year increase gradually also, causes the sludge output of municipal sewage plant also sharply to increase.Sewage sludge has become one of important waste of city generation.The 25-65% sludge treatment that accounts for whole Sewage Plant investment and working cost in China's sludge treatment has become heavy burden.The mode of China's sludge treatment mainly adopts landfill, burns, fills out the modes such as sea at present.Landfill is disposed need take a large amount of soils, polluted underground water.Incineration disposal facility investment is high, working cost is high, organic compound combustion can produce the toxic substance atmosphere pollutions such as dioxin.Fill out extra large disposal meeting Marine Pollution, Marine ecosystems are caused to serious destruction.Therefore, above-mentioned sludge treating method is all unsustainable development.The ultimate disposal of mud should be to set it as resource to develop and utilize, turn waste into wealth.
Porous material is generally divided into two classes, and a class is natural materials, and as zeolite group mineral etc., Equations of The Second Kind is artificial material or the material through adding, as cinder, activated carbon, FSM molecular sieve etc.
Domesticly did much work in mud industrialization aspect utilizing, mainly concentrate on brickmaking early stage, and this is developed to production light ceramic for several years, makes biological cement etc.But because municipal sludge water ratio is high, residue organic content is large, the dehydration and drying cost of mud is high, and the blending amount that making and sintering procedure distribute foul smell and mud is too little, makes the utilization ratio of mud and level of application be subject to great restriction.
The patent No. is the Chinese invention patent of 200910052058.X, a kind of spherical light porous material for wastewater treatment is disclosed, take flyash, municipal effluent plant excess sludge as main raw material, take clay as binding agent, take desulfurization gypsum in coal-fired power plant as swelling agent, the mass percent of its each component consists of: flyash accounts for 63.2～85%, and municipal effluent plant excess sludge accounts for 15～35%, gypsum accounts for 0.3～1.2%, and clay accounts for 0.2～0.8%.The present invention is a kind of spherical light porous water-purifying material forming through high temperature sintering as main raw material take flyash, excess sludge of municipal sewage plant, its loose volume weight 551KG/M3 left and right, particle unit weight 100KG/M3 left and right, water-intake rate 48.44% left and right, hydrochloric acid soluble rate 0.24% left and right.The Chinese patent application that the patent No. is 200710053641.3 provides a kind of method of utilizing municipal sludge and wet-discharged coal ash to produce light high strength sintered brick, this vitrified brick is take 30%-50% municipal sludge and 45%-65% wet-discharged coal ash as main raw material, add the pore-forming material of fluxing on a small quantity, fire and form by certain production technique.But more than invention do not provide any enlightenment for the utilization of mud, and if common coal ash is mixed with mud, the proterties of mud does not have essential change, only can utilize and seldom even cannot utilize mud porous material processed.
Summary of the invention
The shortcoming of prior art in view of the above, the object of the present invention is to provide a kind of mud porous material and preparation method thereof.
For achieving the above object and other relevant objects, the invention provides a kind of mud porous material, percentage composition meter by weight, raw material comprises:
Mud 30-50%;
Coal gangue 30-50%;
Shale 10-30%;
Natural zeolite 2-8%;
Dolomite 0.2-1.5%;
Sodium carbonate 0.2-1.5%;
Ferric oxide 0.2-0.8%.
As optimal way, described mud is wherein one or more of municipal sludge, printing and dyeing sludge, paper mill sludge.
As optimal way, percentage composition meter by weight, described mud is composed as follows: municipal sludge 50%, printing and dyeing sludge 25%, paper mill sludge 25%.
The present invention also provides a kind of preparation method of mud porous material, comprises the steps:
(1) Raw material processing
(1-1) first mud is carried out to pre-treatment, strengthen dewatering, for subsequent use after drying;
(1-2) by natural zeolite fragmentation, for subsequent use after drying.
(1-3) according to said ratio, mud, coal gangue, shale, dolomite, sodium carbonate, ferric oxide, natural zeolite are mixed, add water, obtain mixture;
(2), granulate, be dried
Adopt duplex Squeezinggranulator, said mixture is done to glomeration, after balling-up, dry;
(3), ceramsite sintering
Spherical material is fired into haydite.
As optimal way, described step (1-1) is further: first to carry out pre-treatment to mud, and strengthen dewatering, for subsequent use after drying at 105 ℃.
Because moisture percentage in sewage sludge is high, in order to reduce energy consumption, according to the composition characteristic of mixing sludge, inorganics and organic content etc., first will carry out pre-treatment to mud, passes through sludge conditioning, strengthen dewatering, this process will be utilized pyrolysis oven waste heat, to control reasonable moisture and pan feeding temperature.
As optimal way, described step (1-2) is further: natural zeolite is crossed after jaw crushing crusher machine, ball mill ball milling to 100 target sieves, then at 105 ℃, dried in rear for subsequent use.
Because municipal sludge is colloidal state, surface electrical behavior is strong, fine size, add natural mineral zeolite, utilize the feature that zeolite porous, specific surface area are large, have absorption and ion-exchange performance, destroy Sludge Surface electrostatic double layer, be conducive to the release of mud granule interstitial water, adsorbable ammonia nitrogen simultaneously, reduces the foul smell that porous material preparation process produces.
As optimal way, described step (2) is further: adopt duplex Squeezinggranulator, said mixture is done to glomeration, the diameter of ball, between 5～15mm, after balling-up, is put into loft drier, is warming up to 105 ℃ and dries 1～2h.Analysis is milled and is mixed the index such as component, viscous modulus and moisture of product, supplements skeleton, becomes gas, fluxes or the not enough component of pore filling agent, forms stabilized formulations.And according to products scheme and production technique, molding, granulating on tablets press, obtains low moisture porous material intermediate by drying plant.
As optimal way, described step (3) is further: spherical material is fired into haydite, and baking ceramsite adopts industrial rotary kiln, 450 ℃ of preheating temperatures, warm up time, 20min, maturing temperature 1000-1100 ℃, roasting time 5-10min.
Because coal gangue is containing a large amount of organic matter of 15% carbon, dewatered sludge (containing the carbon of 30-50%), reduce temperature of reaction in decarburization and the swollen process of burning, 1000-1100 ℃ just has good lattice, thereby has reduced the temperature of sintering, and conventional firing temperature is 1200 ℃.
Mesoporous intermediate is carried out to pyrolysis, decompose the low molecule organic matter in mixing sludge, and collect.Aerogenesis component volatilization in mud, fiber are decomposed or carbonization, form porous material goods.
As optimal way, described step (3) is further: spherical material is fired into haydite, and baking ceramsite adopts industrial rotary kiln, 450 ℃ of preheating temperatures, warm up time 1050 ℃ of 20min, maturing temperatures, roasting time 9min.
As mentioned above, the present invention has following beneficial effect: the present invention is take the Coal Refuse that produces in coal preparation process as skeleton, add and be rich in organic mixing sludge mud, printing and dyeing sludge and the paper mill sludge of town sewage plant (with), the porous material of the high and mud of dissolving on a large scale of preparation added value, three kinds of mud coordinate according to a certain percentage, can reduce sintering temperature; Utilize organic matter in municipal sludge as the aerogenesis expansion component of porous material, utilize printing and dyeing and paper mill sludge fibre-bearing component feature how as hole weighting agent, prepare there is porous, high-specific surface area and the light porous material of quality, mud is efficiently utilized, both solved the problem of outlet of mud, again can be product application in multiple fields such as building materials, chemical industry, land reclamation, fillers, accomplish the development that not only utilizes mud but also promote economic construction, material skeleton is mainly by the SiO in mud
2, Al
2o
3, Fe
2o
3component forms; Secondly be the component of fluxing, be respectively the K in mud
2o, Na
2the alkalimetal oxides such as O, MgO, CaO, FeO; Get angry in addition and pore-creating component,, in heat-processed, in skeleton formation, produce H
2o, O
2, CO
2deng volatile gases, thereby form hole, reach the object of porous light.Mud is prepared porous material and has been adopted pre-treatment and low temperature pyrogenation technique, can reduce the swollen temperature of burning of haydites of book structure more than 100 ℃, and the haydite excellent property of firing, not only save energy, and can utilize municipal sludge by ample resources, and not only can fully reclaim the organic constituent in mud, prepare high ratio table and long-pending porous material, and can make full use of the combustibleconstituents of mud self, reach the object that reduces production costs and reduce secondary pollution.Mud is after high-temperature roasting, and the mineral in heavy metal and shale wherein form sosoloid, thereby are fixed in the grid of aluminosilicate.Mud haydites of book structure surface is fine and close glazing state, thereby can effectively wrap up the heavy metal components in solidification sludge.
Embodiment
Below by specific specific examples explanation embodiments of the present invention
Embodiment 1
The present embodiment provides a kind of mud porous material, percentage composition meter by weight, and raw material comprises:
Mud 30%;
Coal gangue 50%;
Shale 10%;
Natural zeolite 8%;
Dolomite 0.2%;
Sodium carbonate 0.2%;
Ferric oxide 0.2%.
Described mud is composed as follows: municipal sludge 50%, printing and dyeing sludge 25%, paper mill sludge 25%.
The present invention also provides a kind of preparation method of mud porous material, comprises the steps:
(1) Raw material processing
(1-1) first to carry out pre-treatment to mud, strengthen dewatering, for subsequent use after drying at 105 ℃.
Because moisture percentage in sewage sludge is high, in order to reduce energy consumption, according to the composition characteristic of mixing sludge, inorganics and organic content etc., first will carry out pre-treatment to mud, passes through sludge conditioning, strengthen dewatering, this process will be utilized pyrolysis oven waste heat, to control reasonable moisture and pan feeding temperature.
(1-2) natural zeolite is crossed after jaw crushing crusher machine, ball mill ball milling to 100 target sieves, for subsequent use after then drying at 105 ℃.
Because municipal sludge is colloidal state, surface electrical behavior is strong, fine size, add natural mineral zeolite, utilize the feature that zeolite porous, specific surface area are large, have absorption and ion-exchange performance, destroy Sludge Surface electrostatic double layer, be conducive to the release of mud granule interstitial water, adsorbable ammonia nitrogen simultaneously, reduces the foul smell that porous material preparation process produces.
(1-3) according to said ratio, mud, coal gangue, shale, dolomite, sodium carbonate, ferric oxide, natural zeolite are mixed, add water, obtain mixture;
(2), granulate, be dried
Adopt duplex Squeezinggranulator, said mixture is done to glomeration, the diameter of ball, between 5～15mm, after balling-up, is put into loft drier, is warming up to 105 ℃ and dries 1～2h.Analysis is milled and is mixed the index such as component, viscous modulus and moisture of product, supplements skeleton, becomes gas, fluxes or the not enough component of pore filling agent, forms stabilized formulations.And according to products scheme and production technique, molding, granulating on tablets press, obtains low moisture porous material intermediate by drying plant.
(3), ceramsite sintering
Spherical material is fired into haydite, and baking ceramsite adopts industrial rotary kiln, 450 ℃ of preheating temperatures, warm up time, 1000 ℃ of 20min, maturing temperatures, roasting time 5min.
Because coal gangue is containing a large amount of organic matter of 15% carbon, dewatered sludge (containing the carbon of 30-50%), reduce temperature of reaction in decarburization and the swollen process of burning, 1000-1100 ℃ just has good lattice, thereby has reduced the temperature of sintering, and conventional firing temperature is 1200 ℃.
Mesoporous intermediate is carried out to pyrolysis, decompose the low molecule organic matter in mixing sludge, and collect.Aerogenesis component volatilization in mud, fiber are decomposed or carbonization, form porous material goods.
Embodiment 2
The present embodiment provides a kind of mud porous material, percentage composition meter by weight, and raw material comprises:
Mud 50%;
Coal gangue 30%;
Shale 10%;
Natural zeolite 2%;
Dolomite 1.5%;
Sodium carbonate 1.5%;
Ferric oxide 0.8%.All the other are impurity.
Described mud is composed as follows: municipal sludge 50%, printing and dyeing sludge 25%, paper mill sludge 25%.
The present invention also provides a kind of preparation method of mud porous material, comprises the steps:
(1) Raw material processing
(1-1) first to carry out pre-treatment to mud, strengthen dewatering, for subsequent use after drying at 105 ℃.
Because moisture percentage in sewage sludge is high, in order to reduce energy consumption, according to the composition characteristic of mixing sludge, inorganics and organic content etc., first will carry out pre-treatment to mud, passes through sludge conditioning, strengthen dewatering, this process will be utilized pyrolysis oven waste heat, to control reasonable moisture and pan feeding temperature.
(1-2) natural zeolite is crossed after jaw crushing crusher machine, ball mill ball milling to 100 target sieves, for subsequent use after then drying at 105 ℃.
Because municipal sludge is colloidal state, surface electrical behavior is strong, fine size, add natural mineral zeolite, utilize the feature that zeolite porous, specific surface area are large, have absorption and ion-exchange performance, destroy Sludge Surface electrostatic double layer, be conducive to the release of mud granule interstitial water, adsorbable ammonia nitrogen simultaneously, reduces the foul smell that porous material preparation process produces.
(1-3) according to said ratio, mud, coal gangue, shale, dolomite, sodium carbonate, ferric oxide, natural zeolite are mixed, add water, obtain mixture;
(2), granulate, be dried
Adopt duplex Squeezinggranulator, said mixture is done to glomeration, the diameter of ball, between 5～15mm, after balling-up, is put into loft drier, is warming up to 105 ℃ and dries 1～2h.Analysis is milled and is mixed the index such as component, viscous modulus and moisture of product, supplements skeleton, becomes gas, fluxes or the not enough component of pore filling agent, forms stabilized formulations.And according to products scheme and production technique, molding, granulating on tablets press, obtains low moisture porous material intermediate by drying plant.
(3), ceramsite sintering
Spherical material is fired into haydite, and baking ceramsite adopts industrial rotary kiln, 450 ℃ of preheating temperatures, warm up time, 1100 ℃ of 20min, maturing temperatures, roasting time 10min.
Because coal gangue is containing a large amount of organic matter of 15% carbon, dewatered sludge (containing the carbon of 30-50%), reduce temperature of reaction in decarburization and the swollen process of burning, 1000-1100 ℃ just has good lattice, thereby has reduced the temperature of sintering, and conventional firing temperature is 1200 ℃.
Mesoporous intermediate is carried out to pyrolysis, decompose the low molecule organic matter in mixing sludge, and collect.Aerogenesis component volatilization in mud, fiber are decomposed or carbonization, form porous material goods.
Embodiment 3
The present embodiment provides a kind of mud porous material, percentage composition meter by weight, and raw material comprises:
Mud 30%;
Coal gangue 30%;
Shale 30%;
Natural zeolite 6%;
Dolomite 1%;
Sodium carbonate 1%;
Ferric oxide 0.5%.
Described mud is composed as follows: municipal sludge 50%, printing and dyeing sludge 25%, paper mill sludge 25%.
The present invention also provides a kind of preparation method of mud porous material, comprises the steps:
(1) Raw material processing
(1-1) first to carry out pre-treatment to mud, strengthen dewatering, for subsequent use after drying at 105 ℃.
Because moisture percentage in sewage sludge is high, in order to reduce energy consumption, according to the composition characteristic of mixing sludge, inorganics and organic content etc., first will carry out pre-treatment to mud, passes through sludge conditioning, strengthen dewatering, this process will be utilized pyrolysis oven waste heat, to control reasonable moisture and pan feeding temperature.
(1-2) natural zeolite is crossed after jaw crushing crusher machine, ball mill ball milling to 100 target sieves, for subsequent use after then drying at 105 ℃.
Because municipal sludge is colloidal state, surface electrical behavior is strong, fine size, add natural mineral zeolite, utilize the feature that zeolite porous, specific surface area are large, have absorption and ion-exchange performance, destroy Sludge Surface electrostatic double layer, be conducive to the release of mud granule interstitial water, adsorbable ammonia nitrogen simultaneously, reduces the foul smell that porous material preparation process produces.
(1-3) according to said ratio, mud, coal gangue, shale, dolomite, sodium carbonate, ferric oxide, natural zeolite are mixed, add water, obtain mixture;
(2), granulate, be dried
Adopt duplex Squeezinggranulator, said mixture is made and asked shape, the diameter of ball, between 5～15mm, after balling-up, is put into loft drier, is warming up to 105 ℃ and dries 1～2h.Analysis is milled and is mixed the index such as component, viscous modulus and moisture of product, supplements skeleton, becomes gas, fluxes or the not enough component of pore filling agent, forms stabilized formulations.And according to products scheme and production technique, molding, granulating on tablets press, obtains low moisture porous material intermediate by drying plant.
(3), ceramsite sintering
Spherical material is fired into haydite, and baking ceramsite adopts industrial rotary kiln, 450 ℃ of preheating temperatures, warm up time, 1050 ℃ of 20min, maturing temperatures, roasting time 7min.
Because coal gangue is containing a large amount of organic matter of 15% carbon, dewatered sludge (containing the carbon of 30-50%), reduce temperature of reaction in decarburization and the swollen process of burning, 1000-1100 ℃ just has good lattice, thereby has reduced the temperature of sintering, and conventional firing temperature is 1200 ℃.
Mesoporous intermediate is carried out to pyrolysis, decompose the low molecule organic matter in mixing sludge, and collect.Aerogenesis component volatilization in mud, fiber are decomposed or carbonization, form porous material goods.
Embodiment 4
The present embodiment provides a kind of mud porous material, percentage composition meter by weight, and raw material comprises:
Mud 40%;
Coal gangue 40%;
Shale 15%;
Natural zeolite 2%;
Dolomite 1%;
Sodium carbonate 0.5%;
Ferric oxide 0.5%.Surplus is impurity.
Described mud is municipal sludge.
The present invention also provides a kind of preparation method of mud porous material, comprises the steps:
(1) Raw material processing
(1-1) first to carry out pre-treatment to mud, strengthen dewatering, for subsequent use after drying at 105 ℃.
Because moisture percentage in sewage sludge is high, in order to reduce energy consumption, according to the composition characteristic of mixing sludge, inorganics and organic content etc., first will carry out pre-treatment to mud, passes through sludge conditioning, strengthen dewatering, this process will be utilized pyrolysis oven waste heat, to control reasonable moisture and pan feeding temperature.
(1-2) natural zeolite is crossed after jaw crushing crusher machine, ball mill ball milling to 100 target sieves, for subsequent use after then drying at 105 ℃.
Because municipal sludge is colloidal state, surface electrical behavior is strong, fine size, add natural mineral zeolite, utilize the feature that zeolite porous, specific surface area are large, have absorption and ion-exchange performance, destroy Sludge Surface electrostatic double layer, be conducive to the release of mud granule interstitial water, adsorbable ammonia nitrogen simultaneously, reduces the foul smell that porous material preparation process produces.
(1-3) according to said ratio, mud, coal gangue, shale, dolomite, sodium carbonate, ferric oxide, natural zeolite are mixed, add water, obtain mixture;
(2), granulate, be dried
Adopt duplex Squeezinggranulator, said mixture is done to glomeration, the diameter of ball, between 5～15mm, after balling-up, is put into loft drier, is warming up to 105 ℃ and dries 1～2h.Analysis is milled and is mixed the index such as component, viscous modulus and moisture of product, supplements skeleton, becomes gas, fluxes or the not enough component of pore filling agent, forms stabilized formulations.And according to products scheme and production technique, molding, granulating on tablets press, obtains low moisture porous material intermediate by drying plant.
(3), ceramsite sintering
Spherical material is fired into haydite, and baking ceramsite adopts industrial rotary kiln, 450 ℃ of preheating temperatures, warm up time, 1080 ℃ of 20min, maturing temperatures, roasting time 8min.
Because coal gangue is containing a large amount of organic matter of 15% carbon, dewatered sludge (containing the carbon of 30-50%), reduce temperature of reaction in decarburization and the swollen process of burning, 1000-1100 ℃ just has good lattice, thereby has reduced the temperature of sintering, and conventional firing temperature is 1200 ℃.
Mesoporous intermediate is carried out to pyrolysis, decompose the low molecule organic matter in mixing sludge, and collect.Aerogenesis component volatilization in mud, fiber are decomposed or carbonization, form porous material goods.
Embodiment 5
The present embodiment provides a kind of mud porous material, and percentage composition meter raw material comprises by weight:
Mud 45%;
Coal gangue 35%;
Shale 10%;
Natural zeolite 6%;
Dolomite 1%;
Sodium carbonate 1%;
Ferric oxide 0.6%.
Described mud is printing and dyeing sludge and paper mill sludge, and wherein printing and dyeing sludge is to add 55% of sludge quantity: paper mill sludge is to add 45% of sludge quantity
The present invention also provides the preparation method of a sharp mud porous material, comprises the steps:
(1) Raw material processing
(1-1) first to carry out pre-treatment to mud, strengthen dewatering, for subsequent use after drying at 105 ℃.
Because moisture percentage in sewage sludge is high, in order to reduce energy consumption, according to the composition characteristic of mixing sludge, inorganics and organic content etc., first will carry out pre-treatment to mud, passes through sludge conditioning, strengthen dewatering, this process will be utilized pyrolysis oven waste heat, to control reasonable moisture and pan feeding temperature.
(1-2) natural zeolite is crossed after jaw crushing crusher machine, ball mill ball milling to 100 target sieves, for subsequent use after then drying at 105 ℃.
Because municipal sludge is colloidal state, surface electrical behavior is strong, fine size, add natural mineral zeolite, utilize the feature that zeolite porous, specific surface area are large, have absorption and ion-exchange performance, destroy Sludge Surface electrostatic double layer, be conducive to the release of mud granule interstitial water, adsorbable ammonia nitrogen simultaneously, reduces the foul smell that porous material preparation process produces.
(1-3) according to said ratio, mud, coal gangue, shale, dolomite, sodium carbonate, ferric oxide, natural zeolite are mixed, add water, obtain mixture;
(2), granulate, be dried
Adopt duplex Squeezinggranulator, said mixture is done to glomeration, the diameter of ball, between 5～15mm, after balling-up, is put into loft drier, is warming up to 105 ℃ and dries 1～2h.Analysis is milled and is mixed the index such as component, viscous modulus and moisture of product, supplements skeleton, becomes gas, fluxes or the not enough component of pore filling agent, forms stabilized formulations.And according to products scheme and production technique, molding, granulating on tablets press, obtains low moisture porous material intermediate by drying plant.
(3), ceramsite sintering
Spherical material is fired into haydite, and baking ceramsite adopts industrial rotary kiln, 450 ℃ of preheating temperatures, warm up time, 1050 ℃ of 20min, maturing temperatures, roasting time 9min.
Because coal gangue is containing a large amount of organic matter of 15% carbon, dewatered sludge (containing the carbon of 30-50%), reduce temperature of reaction in decarburization and the swollen process of burning, 1000-1100 ℃ just has good lattice, thereby has reduced the temperature of sintering, and conventional firing temperature is 1200 ℃.
Mesoporous intermediate is carried out to pyrolysis, decompose the low molecule organic matter in mixing sludge, and collect.Aerogenesis component volatilization in mud, fiber are decomposed or carbonization, form porous material goods.
In sum, the present situation that the present invention (1) increases rapidly according to current mud quantum of output, there are the practical situation in extensive use and market in building materials, chemical industry, environmental protection and filler industry in conjunction with porous material, carry out mixing sludge and prepare the industrialization tackling of key scientific and technical problems of porous material, for large mud is dissolved and effectively utilized a new way is provided.
(2) take full advantage of the feature that different mud contains different components, in municipal sludge, add printing and dyeing and the paper mill sludge of multifilament, form the mixing sludge formula material containing zeolite and other adjusting agent.Can cut down and solve the Peculiar Smell in mud industrialization and preparation technology thereof.By the increasing alkali to recipe ingredient, can prepare the porous material of different purposes, meet different industries and user's demand, to recycling sludge with dissolve very favourable.
(3) mud is prepared porous material and has been adopted pre-treatment and low temperature pyrogenation technique, can reduce the swollen temperature of burning of haydites of book structure more than 100 ℃, and the haydite excellent property of firing, not only save energy, and can utilize municipal sludge by ample resources, and not only can fully reclaim the organic constituent in mud, prepare the porous material of high-specific surface area, and can make full use of the combustibleconstituents of mud self, reach the object that reduces production costs and reduce secondary pollution.
(4) mud is after high-temperature roasting, and the mineral in heavy metal and shale wherein form sosoloid, thereby are fixed in the grid of aluminosilicate.Mud haydites of book structure surface is fine and close glazing state, thereby can effectively wrap up the heavy metal components in solidification sludge.
Claims (9)
1. a mud porous material, is characterized in that, percentage composition meter by weight, and raw material comprises:
Mud 30-50%;
Coal gangue 30-50%;
Shale 10-30%;
Natural zeolite 2-8%;
Dolomite 0.2-1.5%;
Sodium carbonate 0.2-1.5%;
Ferric oxide 0.2-0.8%.
2. mud porous material according to claim 1, is characterized in that: described mud is wherein one or more of municipal sludge, printing and dyeing sludge, paper mill sludge.
3. mud porous material according to claim 2, is characterized in that: percentage composition meter by weight, described mud is composed as follows: municipal sludge 50%, printing and dyeing sludge 25%, paper mill sludge 25%.
4. according to the preparation method of the mud porous material described in claims 1 to 3 any one, it is characterized in that comprising the steps:
(1) Raw material processing
(1-1) first mud is carried out to pre-treatment, strengthen dewatering, for subsequent use after drying;
(1-2) by natural zeolite fragmentation, for subsequent use after drying.
(1-3) according to said ratio, mud, coal gangue, shale, dolomite, sodium carbonate, ferric oxide, natural zeolite are mixed, add water, obtain mixture;
(2), granulate, be dried
Adopt duplex Squeezinggranulator, said mixture is done to glomeration, after balling-up, dry;
(3), ceramsite sintering
Spherical material is fired into haydite.
5. the preparation method of mud porous material according to claim 4, is characterized in that: described step (1-1) is further: first to carry out pre-treatment to mud, and strengthen dewatering, for subsequent use after drying at 105 ℃.
6. the preparation method of mud porous material according to claim 4, it is characterized in that: described step (1-2) is further: natural zeolite is crossed after jaw crushing crusher machine, ball mill ball milling to 100 target sieves, for subsequent use after then drying at 105 ℃.
7. the preparation method of mud porous material according to claim 4; it is characterized in that: described step (2) is further: adopt duplex Squeezinggranulator; said mixture is done to glomeration; the diameter of ball is between 5～15mm; after balling-up; put into loft drier, be warming up to 105 ℃ and dry 1～2h.
8. the preparation method of mud porous material according to claim 4, it is characterized in that: described step (3) is further: spherical material is fired into haydite, baking ceramsite adopts industrial rotary kiln, 450 ℃ of preheating temperatures, warm up time, 20min, maturing temperature 1000-1100 ℃, roasting time 5-10min.
9. the preparation method of mud porous material according to claim 4, it is characterized in that: described step (3) is further: spherical material is fired into haydite, baking ceramsite adopts industrial rotary kiln, 450 ℃ of preheating temperatures, warm up time 1050 ℃ of 20min, maturing temperatures, roasting time 9min.
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104728849A (en) * | 2013-12-20 | 2015-06-24 | 株式会社池田工业 | Sludge treatment system |
| CN105130391A (en) * | 2015-07-10 | 2015-12-09 | 武汉理工大学 | Method of preparing light-weight ceramic granules by sintering lake-bottom mud and municipal sludge |
| CN106116636A (en) * | 2016-06-28 | 2016-11-16 | 平凉华晨非金属应用科技有限公司 | Paper mill sludge lightweight through hole haydite |
| CN106478143A (en) * | 2016-09-27 | 2017-03-08 | 甘肃华晨生态治理有限公司 | The production method of multi-functional quincunx paper mill sludge lightweight through hole haydite |
| CN107445419A (en) * | 2016-05-31 | 2017-12-08 | 彭海涛 | The method that industrial sludge harmless treatment is regenerated as biological particles and building materials |
| CN108607505A (en) * | 2018-05-21 | 2018-10-02 | 陕西科技大学 | The adsorbent and its preparation method and application prepared using excess sludge |
| CN108675815A (en) * | 2018-05-25 | 2018-10-19 | 南昌大学 | A kind of preparation method of flyash sludge ceramsite |
| WO2018192467A1 (en) * | 2017-04-19 | 2018-10-25 | 青岛易生态环保科技有限公司 | Preparation method for ceramsite using municipal sludge as raw material |
| CN109851265A (en) * | 2018-12-24 | 2019-06-07 | 中建西部建设股份有限公司 | A kind of controllable sludge silt soil matrix haydite of hole and preparation method thereof |
| CN109928652A (en) * | 2019-04-19 | 2019-06-25 | 四川省劲腾环保建材有限公司 | A method of it prepares and controls sulfide and sulfate in extruding dregs porcelain granule |
| CN110526682A (en) * | 2019-08-24 | 2019-12-03 | 金顺来(厦门)建筑材料开发有限公司 | A kind of foaming stone material insulation board and preparation method thereof |
| CN116375451A (en) * | 2023-02-03 | 2023-07-04 | 淮南东辰固废利用有限公司 | Raw material processing technology for producing ceramsite from coal gangue |
| CN116639993A (en) * | 2022-02-15 | 2023-08-25 | 清华大学 | Novel method for preparing ceramsite by synergistic co-treatment of gangue and sludge |
| CN118619705A (en) * | 2024-05-23 | 2024-09-10 | 山东万物生机械技术有限公司 | Device and process method for preparing ceramsite by using municipal sludge |
-
2014
- 2014-02-21 CN CN201410059284.1A patent/CN103880472A/en active Pending
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104728849A (en) * | 2013-12-20 | 2015-06-24 | 株式会社池田工业 | Sludge treatment system |
| CN105130391A (en) * | 2015-07-10 | 2015-12-09 | 武汉理工大学 | Method of preparing light-weight ceramic granules by sintering lake-bottom mud and municipal sludge |
| CN105130391B (en) * | 2015-07-10 | 2017-11-17 | 武汉理工大学 | The method for preparing light ceramic using bottom mud in lake and municipal sludge microwave sintering |
| CN107445419A (en) * | 2016-05-31 | 2017-12-08 | 彭海涛 | The method that industrial sludge harmless treatment is regenerated as biological particles and building materials |
| CN106116636A (en) * | 2016-06-28 | 2016-11-16 | 平凉华晨非金属应用科技有限公司 | Paper mill sludge lightweight through hole haydite |
| CN106478143A (en) * | 2016-09-27 | 2017-03-08 | 甘肃华晨生态治理有限公司 | The production method of multi-functional quincunx paper mill sludge lightweight through hole haydite |
| WO2018192467A1 (en) * | 2017-04-19 | 2018-10-25 | 青岛易生态环保科技有限公司 | Preparation method for ceramsite using municipal sludge as raw material |
| US10894741B2 (en) * | 2017-04-19 | 2021-01-19 | Qingdao Yi Eco-Environmental Protection Technology Co. Ltd | Method for preparing ceramsite by using municipal sludge as raw material |
| CN108607505A (en) * | 2018-05-21 | 2018-10-02 | 陕西科技大学 | The adsorbent and its preparation method and application prepared using excess sludge |
| CN108675815A (en) * | 2018-05-25 | 2018-10-19 | 南昌大学 | A kind of preparation method of flyash sludge ceramsite |
| CN108675815B (en) * | 2018-05-25 | 2021-06-11 | 南昌大学 | Preparation method of fly ash sludge ceramsite |
| CN109851265A (en) * | 2018-12-24 | 2019-06-07 | 中建西部建设股份有限公司 | A kind of controllable sludge silt soil matrix haydite of hole and preparation method thereof |
| CN109851265B (en) * | 2018-12-24 | 2021-08-17 | 中建西部建设股份有限公司 | Sludge residue soil-based ceramsite with adjustable pores and preparation method thereof |
| CN109928652A (en) * | 2019-04-19 | 2019-06-25 | 四川省劲腾环保建材有限公司 | A method of it prepares and controls sulfide and sulfate in extruding dregs porcelain granule |
| CN110526682A (en) * | 2019-08-24 | 2019-12-03 | 金顺来(厦门)建筑材料开发有限公司 | A kind of foaming stone material insulation board and preparation method thereof |
| CN116639993A (en) * | 2022-02-15 | 2023-08-25 | 清华大学 | Novel method for preparing ceramsite by synergistic co-treatment of gangue and sludge |
| CN116375451A (en) * | 2023-02-03 | 2023-07-04 | 淮南东辰固废利用有限公司 | Raw material processing technology for producing ceramsite from coal gangue |
| CN118619705A (en) * | 2024-05-23 | 2024-09-10 | 山东万物生机械技术有限公司 | Device and process method for preparing ceramsite by using municipal sludge |
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