CN108863426A - A kind of super light ceramisite of the greasy filth containing cold rolling and preparation method thereof - Google Patents
A kind of super light ceramisite of the greasy filth containing cold rolling and preparation method thereof Download PDFInfo
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- CN108863426A CN108863426A CN201810755406.9A CN201810755406A CN108863426A CN 108863426 A CN108863426 A CN 108863426A CN 201810755406 A CN201810755406 A CN 201810755406A CN 108863426 A CN108863426 A CN 108863426A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/009—Porous or hollow ceramic granular materials, e.g. microballoons
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/1321—Waste slurries, e.g. harbour sludge, industrial muds
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/135—Combustion residues, e.g. fly ash, incineration waste
- C04B33/1352—Fuel ashes, e.g. fly ash
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/0051—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof characterised by the pore size, pore shape or kind of porosity
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Abstract
The invention belongs to field of inorganic nonmetallic material, and in particular to a kind of super light ceramisite of the greasy filth containing cold rolling and preparation method thereof.The primary raw material used is mixed in a certain ratio for flyash, bentonite and cold rolling greasy filth, through granulation, drying, roasting, cooling obtained super light ceramisite.Not only efficiently solve the problems, such as the fixed-end forces of flyash, cold rolling greasy filth, have also obtained that density is small, intensity is high, water absorption rate is big, heat preservation, heat-insulated, fire resisting, antidetonation can replace the common sandstone to prepare light aggregate concrete, as water treatment filter material, adsorbent, porous pavement material, it is also used as agriculture, soilless cultivation in gardens culture medium, and building backfill, floorings, building-block construction material super light ceramisite, and haydite production cost is reduced, there are good market prospects.
Description
Technical field
The invention belongs to field of inorganic nonmetallic material, and in particular to a kind of super light ceramisite and its system of the greasy filth containing cold rolling
Preparation Method.
Background technique
Flyash is the most important by-product of steam power plant, and China is a country based on thermal power generation, thermal power generation
A large amount of flyash can be discharged in flue, the reserves of flyash are considerable.And with the continuous development of China's power industry, powder
Coal ash discharge amount is increasing year by year, at present for the disposition of flyash still based on grey field stocking and storing, stocking and storing and land occupation contradiction
It is more and more prominent.Flyash has significant damage to natural resources such as soil, water resource, air resources, and can make indirectly to human body
At injury.Flyash in industrial residue is used to prepare to the raw material of haydite etc., realizes the secondary use to flyash, and can
To reduce production cost, meet the requirement of sustainable development, to resource recycle and the protection of ecological environment has greatly
Contribution.
Cold rolling greasy filth：In cold-rolling process, in order to which the steel billet of rolling is cooled down and lubricated, need during the rolling process
Emulsion is sprayed, and billet surface by constantly impact and rolls, ultra-fine iron can flow into cold-rolling emulsion because of peeling, thus
Cold-rolling emulsion is polluted.In cold-rolling emulsion purification process, by magnetic bar filter to the cold rolling emulsified after pollution
Liquid is filtered, and the atrament being adsorbed on magnetic bar filter is the oxide containing grease and ultra-fine iron, this oxide
It is referred to as cold rolling greasy filth.Cold rolling greasy filth carries out solidification landfill disposal as danger wastes at present, and cold rolling greasy filth endangers to soil
Evil greatly, gently then causes crop production reduction and quality of agricultural product to reduce, and heavy then polluted underground water and surface water influence atmospheric environment
Quality, to directly be detrimental to health.Therefore rational utilization cold rolling greasy filth carries out digestion process as the raw material of industry, makes it
Recycling is to solve the problems, such as the new way of cold rolling greasy filth, but the technology of current this respect is less.
Super light ceramisite is using inorganic material as primary raw material, through raw material mixing, balling-up, drying, roasting, cooling screening etc.
A kind of light-weight aggregate of technique production.The appearance of super light ceramisite is rounded, its surface is one layer of hard shell, this layer of shell
In ceramic or enamel, there is water proof to protect gas effect, and assigns the higher intensity of haydite and adsorption capacity.Super light ceramisite conduct
A kind of light-weight aggregate has the characteristics that density is small, intensity is high, water absorption rate is big, heat preservation, heat-insulated, fire resisting, antidetonation, widely used, can be with
Replace common sandstone to prepare light aggregate concrete, is used as water treatment filter material, adsorbent, porous pavement material, is also used as agriculture
The building materials raw materials such as culture medium and floorings, building-block, the building backfill of soilless cultivation in industry, gardens.Currently on the market
Demand to super light ceramisite increasingly increases, and raw material is more single in addition and production cost high energy consumption, super light ceramisite cost
It is high.
Summary of the invention
In order to reduce the harm of cold rolling greasy filth, inventor has studied its material composition feature, is applied to haydite production,
The big difficult problem of cold rolling greasy filth harm is not only solved, while providing new raw material sources for haydite production, is reduced
Haydite production cost, and obtain the ceramic product of high quality.Inventor specifically provides a kind of Ultralight of greasy filth containing cold rolling
Haydite and preparation method thereof, main technical schemes be using flyash, cold rolling greasy filth and bentonite as raw material, through balling-up, drying,
The techniques such as roasting produce the ceramic product of high quality.
Super light ceramisite product shape of the present invention is regular spherical or elliposoidal, and there are Small Holes on surface, and inside has
A large amount of dead-end pores, density rating 300-500, coefficient of expansion 1.5-1.9, cylindrical compress strength is in 0.5MPa-2.5MPa, water absorption rate
10%-20%, chloride content 2.2mg/L-12.6mg/L, meets national standard.The super light ceramisite raw material proportioning, by weight
It is as follows to measure part meter：50-70 parts of flyash, 10 parts of bentonite, 20-40 parts of cold rolling greasy filth.
The flyash is the three-level flyash of steam power plant's coal-powder boiler outlet, and the oxide composition of flyash is mainly
SiO2、Al2O3And a small amount of FeO, Fe2O3、CaO、MgO、SO3、TiO2Deng.SiO2And Al2O3Content can account for the 60% of total content with
On.It is used as main sial element supplier in the present invention, the haydite of firing is made to possess preferable physical property.In the present invention
Its dosage is controlled at 50-70 parts, dosage is excessively high, and maturing temperature requires high, energy consumption increase, and product roasting degree is unstable
It is fixed, have half-cooked or inhomogenous surface color phenomenon；Dosage is too low, and product cylindrical compress strength is relatively low, goes out in product roasting process
Show softening transform, bonding phenomenon increases between pellet, reduces haydite quality.
In cold-rolling emulsion purification process, the cold-rolling emulsion after pollution is filtered by magnetic bar filter, is inhaled
The atrament being attached on magnetic bar filter is the oxide containing grease and ultra-fine iron, and this oxide is referred to as cold-rolled lubricating oil
Mud.Heretofore described cold rolling greasy filth derives from each steel processing factory, and main component is Fe and Fe2O370%-80% is accounted for,
Remaining is emulsion and moisture, and there are also the heavy metal elements such as a small amount of Zn, Pb, Hg, Cd, Ni.Fe during ceramsite sintering2O3
With carbon generated reactive gas, so that haydite density be made to become smaller, heat insulation effect is improved, and emulsion can rise during ceramsite sintering
To fluxing, the effect of fusing point is reduced.For the comprehensive quality for guaranteeing ceramic product, studied and tested determining that its dosage is 20-40
Part.Dosage is excessively high, and the skeleton structure inside haydite can be made to reduce, and the ceramic product cylindrical compress strength after roasting reduces；Dosage is too low,
Haydite inner molten can be made to get angry, and ingredient is on the low side, and for the ceramic product after leading to roasting because expansion effect is bad, density is bigger than normal.
Bentonite is the nonmetallic minerals using montmorillonite as main mineral constituent, and smectite structure is by two silicon oxygen four sides
Body presss from both sides the 2 of one layer of alumina octahedral composition：1 type crystal structure, there are certain sun for the layer structure formed due to montmorillonite structure cell
Ion, such as Cu, Mg, Na, K, and these cations are very unstable with the effect of montmorillonite structure cell, easily handed over by other cations
It changes, therefore there is preferable ion exchangeable.Wherein smectite content is by montmorillonite in 85-90%, bentonitic properties
It is determined.It can also be able to be loose earthy, have sliding sense when being rubbed with the hands and ground with finger, small blocks add volume after water swollen at compact massive
Big several times are in suspension, when water is few in the pasty state to 20-30 times in water.Bentonite due to there is good physical and chemical performance,
In the preparation process of haydite raw material ball, cementation is mainly played, makes raw material ball that there is certain initial strength, roasting can also be increased
The cylindrical compress strength of ceramic product after burning.Dosage is excessively high, has not only increased haydite production cost, but also waste of resource.Dosage is too low, can make to make pottery
Grain raw material ball quality reduces, and crushing increases in roasting process, and the ceramic product after eventually leading to roasting is cracked, water absorption rate
Increase, cylindrical compress strength reduction and other issues.
The light ceramic of the greasy filth of the present invention containing cold rolling can be used conventional haydite preparation method and can be completed, and preferably may be used
Using following preparation method, specific step is as follows：
(1) raw material mixes：It requires to mix flyash, cold rolling greasy filth and bentonite according to the proportion, stirs 2-
3min；
(2) balling-up：Raw material after stirring is slowly sent to haydite nodulizer, while external adding water is sprayed into balling-up after atomization
Machine, control water consumption are the 20% of raw material total amount, charging rate and raw material ball size are controlled, after raw material ball partial size reaches 5-20mm
Overflow nodulizer；
(3) it dries：The raw material ball overflowed through nodulizer is transported in dryer by belt conveyor, 100-130 DEG C of low temperature
Drying, drying time about 3h to raw material ball moisture content are down to 3% hereinafter, 2m lands percentage of damage < 5%；
(4) it roasts：Raw material ball warp feed opening after drying falls into rotary kiln and is roasted, and kiln temperature is controlled in 1160-
Between 1200 DEG C, the firing time is controlled in 15min or so.Temperature is excessively high to make pellet in kiln agglomerate, and haydite quality is caused not conform to
Lattice and equipment damage is caused, temperature is too low to make pellet underburnt, cause haydite off quality.
(5) cooling screening：Roasting haydite drops down onto cooler through kiln hood to be rapidly cooled, haydite quilt after cooling
It is delivered to screening machine to be sieved, the haydite of different-grain diameter is sent to finished bin respectively and is stored.
The characteristics of present invention utilizes cold rolling greasy filth, by itself and flyash and bentonite rational proportion, is made light ceramic,
Cooperate corresponding preparation method, through high-temperature roasting, cold rolling greasy filth has effectively played fluxing and effect that is getting angry, flyash and swollen
Profit soil can effectively fix heavy metal ion a small amount of in cold rolling greasy filth, and the heavy ion leaching content of haydite in water is effectively reduced.
It is innoxious to realize solid waste, avoids secondary pollution, reduces resource waste, and ceramic product quality of the present invention is steady
Fixed, indices meet national standard.With other super light ceramisite similar performances, it can be used as building backfill, water process filter
Material, adsorbent, porous pavement material can be also used for the agricultural, culture medium and floorings of soilless cultivation in gardens, hollow
Building block, the construction material of building backfill etc..Furthermore with both solid waste baking ceramsites, with it is traditional using other from
Right resource baking ceramsite is compared, and purchase cost and transportation cost is greatly saved, and has good market prospects.
Specific embodiment
The specific embodiment of form by the following examples does further specifically above content of the invention
It is bright, but the range that this should not be interpreted as to the above-mentioned theme of the present invention is only limitted to example below.It is all to be based on above content of the present invention
The technology realized all belongs to the scope of the present invention, and it is complete to be all made of conventional prior unless otherwise specified, in following embodiments
At.
Embodiment 1
A kind of super light ceramisite of the greasy filth containing cold rolling, raw material are flyash, cold rolling greasy filth and bentonite.With parts by weight
Meter, raw material proportioning are：65 parts of flyash, 25 parts of cold rolling greasy filth, 10 parts of bentonite.
Specific step is as follows for the preparation method of the super light ceramisite：
Pretreatment of raw material：Flyash is directly stored up by thermoelectricity flyash warehouse by pneumatic conveying to the small-sized flyash in scene
Storehouse；Cold rolling greasy filth is collected, the cold rolling greasy filth of storage by steel processing factory, it is spare to greasy filth storehouse to transport storage；Bentonite, by outer
Portion is bought, and is stored spare to bentonite warehouse.
Mixing：It requires to mix flyash, cold rolling greasy filth and bentonite according to the proportion, the raw material mixed is passed through
It crosses in screw conveyor feeding vertical mixer and is stirred, mixing time 3min；
Balling-up：Raw material after stirring is delivered to transition hopper and temporarily stores by belt conveyor, vertical elevator, then
It is slowly sent through belt conveyor to haydite nodulizer again, while external adding water is sprayed into nodulizer after atomization, control water consumption
It is the 20% of raw material total amount, controls charging rate and raw material ball size, raw material ball partial size overflow nodulizer after reaching 10 ± 2mm；
Drying：The raw material ball overflowed through nodulizer is transported in dryer by belt conveyor, is carried out 100 DEG C of low temperature and is dried
It is dry, drying time 3h or so；
Roasting：Raw material ball warp feed opening after drying falls into rotary kiln and is roasted, and raw material ball is rolled to kiln hood by kiln tail, returns
Rotary Kiln Temperature is controlled by computer remote, and at 1190 DEG C or so, the firing time is 15min or so for firing temperature control；
Cooling screening：Roasting haydite drops down onto cooler through kiln hood to be rapidly cooled, and haydite after cooling is defeated
It send to screening machine and is sieved, the haydite of different-grain diameter is sent to finished bin respectively and is stored.
The cold rolling greasy filth super light ceramisite obtained by above method, bulk density 485kg/m3, density rating 500
Grade, cylindrical compress strength 2.1MPa, water absorption rate 10.2%, expansion index 1.5, chloride content 4.3mg/kg.
The haydite water absorption rate that the method obtains is relatively low, and common sandstone can be replaced to prepare light aggregate concrete.
Embodiment 2
A kind of super light ceramisite of the greasy filth containing cold rolling, raw material are flyash, cold rolling greasy filth and bentonite.With parts by weight
Meter, raw material proportioning are：60 parts of flyash, 30 parts of cold rolling greasy filth, 10 parts of bentonite.
Specific step is as follows for the preparation method of the super light ceramisite：
Pretreatment of raw material：Flyash is directly stored up by thermoelectricity flyash warehouse by pneumatic conveying to the small-sized flyash in scene
Storehouse；Cold rolling greasy filth is collected, the cold rolling greasy filth of storage by steel processing factory, it is spare to greasy filth storehouse to transport storage；Bentonite, by outer
Portion is bought, and is stored spare to bentonite warehouse.
Mixing：It requires to mix flyash, cold rolling greasy filth and bentonite according to the proportion, the raw material mixed is passed through
It crosses in screw conveyor feeding vertical mixer and is stirred, mixing time 3min；
Balling-up：Raw material after stirring is delivered to transition hopper and temporarily stores by belt conveyor, vertical elevator, then
It is slowly sent through belt conveyor to haydite nodulizer again, while external adding water is sprayed into nodulizer after atomization, control water consumption
It is the 20% of raw material total amount, controls charging rate and raw material ball size, raw material ball partial size overflow nodulizer after reaching 10 ± 2mm；
Drying：The raw material ball overflowed through nodulizer is transported in dryer by belt conveyor, is carried out 110 DEG C of low temperature and is dried
It is dry, drying time 3h or so；
Roasting：Raw material ball warp feed opening after drying falls into rotary kiln and is roasted, and raw material ball is rolled to kiln hood by kiln tail, returns
Rotary Kiln Temperature is controlled by computer remote, and at 1180 DEG C or so, the firing time is 15min or so for firing temperature control；
Cooling screening：Roasting haydite drops down onto cooler through kiln hood to be rapidly cooled, and haydite after cooling is defeated
It send to screening machine and is sieved, the haydite of different-grain diameter is sent to finished bin respectively and is stored.
The cold rolling greasy filth super light ceramisite obtained by above method, bulk density 447kg/m3, density rating 500
Grade, cylindrical compress strength 1.8MPa, water absorption rate 13.4%, expansion index 1.6, chloride content 6.4mg/kg.
The haydite water absorption rate that the method obtains is relatively low, can be used for porous pavement material, building-block and building and returns
Fill out equal construction materials.
Embodiment 3
A kind of super light ceramisite of the greasy filth containing cold rolling, raw material are flyash, cold rolling greasy filth and bentonite.With parts by weight
Meter, raw material proportioning are：55 parts of flyash, 35 parts of cold rolling greasy filth, 10 parts of bentonite.
Specific step is as follows for the preparation method of the super light ceramisite：
Pretreatment of raw material：Flyash is directly stored up by thermoelectricity flyash warehouse by pneumatic conveying to the small-sized flyash in scene
Storehouse；Cold rolling greasy filth is collected, the cold rolling greasy filth of storage by steel processing factory, it is spare to greasy filth storehouse to transport storage；Bentonite, by outer
Portion is bought, and is stored spare to bentonite warehouse.
Mixing：It requires to mix flyash, cold rolling greasy filth and bentonite according to the proportion, the raw material mixed is passed through
It crosses in screw conveyor feeding vertical mixer and is stirred, mixing time 3min；
Balling-up：Raw material after stirring is delivered to transition hopper and temporarily stores by belt conveyor, vertical elevator, then
It is slowly sent through belt conveyor to haydite nodulizer again, while external adding water is sprayed into nodulizer after atomization, control water consumption
It is the 20% of raw material total amount, controls charging rate and raw material ball size, raw material ball partial size overflow nodulizer after reaching 10 ± 2mm；
Drying：The raw material ball overflowed through nodulizer is transported in dryer by belt conveyor, is carried out 120 DEG C of low temperature and is dried
It is dry, drying time 3h；
Roasting：Raw material ball warp feed opening after drying falls into rotary kiln and is roasted, and raw material ball is rolled to kiln hood by kiln tail, returns
Rotary Kiln Temperature is controlled by computer remote, and firing temperature control is at 1170 DEG C or so, firing time 15min；
Cooling screening：Roasting haydite drops down onto cooler through kiln hood to be rapidly cooled, and haydite after cooling is defeated
It send to screening machine and is sieved, the haydite of different-grain diameter is sent to finished bin respectively and is stored.
The cold rolling greasy filth super light ceramisite obtained by above method, bulk density 284kg/m3, density rating 300
Grade, cylindrical compress strength 0.6MPa, water absorption rate 16.3%, expansion index 1.7, chloride content 8.1mg/kg.
The haydite bulk density that the method obtains is lower, can be used for water treatment filter material, soilless cultivation in adsorbent and gardens
Culture medium.
Embodiment 4
A kind of super light ceramisite of the greasy filth containing cold rolling, raw material are flyash, cold rolling greasy filth and bentonite.With parts by weight
Meter, raw material proportioning are：50 parts of flyash, 40 parts of cold rolling greasy filth, 10 parts of bentonite.
Specific step is as follows for the preparation method of the super light ceramisite：
Pretreatment of raw material：Flyash is directly stored up by thermoelectricity flyash warehouse by pneumatic conveying to the small-sized flyash in scene
Storehouse；Cold rolling greasy filth is collected, the cold rolling greasy filth of storage by steel processing factory, it is spare to greasy filth storehouse to transport storage；Bentonite, by outer
Portion is bought, and is stored spare to bentonite warehouse.
Mixing：It requires to mix flyash, cold rolling greasy filth and bentonite according to the proportion, the raw material mixed is passed through
It crosses in screw conveyor feeding vertical mixer and is stirred, mixing time 3min；
Balling-up：Raw material after stirring is delivered to transition hopper and temporarily stores by belt conveyor, vertical elevator, then
It is slowly sent through belt conveyor to haydite nodulizer again, while external adding water is sprayed into nodulizer after atomization, control water consumption
It is the 20% of raw material total amount, controls charging rate and raw material ball size, raw material ball partial size overflow nodulizer after reaching 10 ± 2mm；
Drying：The raw material ball overflowed through nodulizer is transported in dryer by belt conveyor, is carried out 100 DEG C of low temperature and is dried
It is dry, drying time 3h；
Roasting：Raw material ball warp feed opening after drying falls into rotary kiln and is roasted, and raw material ball is rolled to kiln hood by kiln tail, returns
Rotary Kiln Temperature is controlled by computer remote, and firing temperature control is at 1160 DEG C or so, firing time 15min；
Cooling screening：Roasting haydite drops down onto cooler through kiln hood to be rapidly cooled, and haydite after cooling is defeated
It send to screening machine and is sieved, the haydite of different-grain diameter is sent to finished bin respectively and is stored.
The cold rolling greasy filth super light ceramisite that above method obtains, bulk density 347kg/m3, 400 grades of density rating,
Cylindrical compress strength is 1.1MPa, water absorption rate 18.6%, 1.9 chloride content 11.3mg/kg of expansion index.
The haydite bulk density that the method obtains is lower, can be used for agriculture, soilless cultivation in gardens culture medium.
Claims (4)
1. a kind of super light ceramisite of greasy filth containing cold rolling, it is characterised in that：The super light ceramisite raw material proportioning, by weight such as
Under：50-70 parts of flyash, 10 parts of bentonite, 20-40 parts of cold rolling greasy filth.
2. a kind of super light ceramisite of greasy filth containing cold rolling according to claim 1, it is characterised in that：The Ultralight pottery
Grain shape is regular spherical or elliposoidal, and there are Small Holes on surface, and there are dead-end pore, density rating 300-500, the coefficient of expansion in inside
1.5-1.9, cylindrical compress strength is in 0.5MPa-2.5MPa, water absorption rate 10%-20%, chloride content 2.2mg/L-12.6mg/L.
3. a kind of super light ceramisite of greasy filth containing cold rolling according to claim 1, it is characterised in that：The flyash is
The three-level flyash of steam power plant's coal-powder boiler outlet；The cold rolling greasy filth derives from steel processing factory.
4. a kind of preparation method of the super light ceramisite of greasy filth containing cold rolling described in claim 1, it is characterised in that：Specific steps
It is as follows：
(1) raw material mixes：It requires to mix flyash, cold rolling greasy filth and bentonite according to the proportion, stirs 2-3min；
(2) balling-up：Raw material after stirring is slowly sent to haydite nodulizer, while external adding water is sprayed into nodulizer after atomization,
20% that water consumption is raw material total amount is controlled, charging rate and raw material ball size are controlled, raw material ball partial size overflows after reaching 5-20mm
Nodulizer out；
(3) it dries：The raw material ball overflowed through nodulizer is transported in dryer by belt conveyor, 100-130 DEG C of low temperature drying,
3% is down to hereinafter, 2m lands percentage of damage < 5% to raw material ball moisture content；
(4) it roasts：Raw material ball warp feed opening after drying falls into rotary kiln and is roasted, and kiln temperature is controlled in 1160-1200
Between DEG C, the firing time is controlled in 15min；
(5) cooling screening：Roasting haydite drops down onto cooler through kiln hood to be rapidly cooled, and haydite after cooling is conveyed
It is sieved to screening machine, the haydite of different-grain diameter is sent to finished bin respectively and is stored.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109734418A (en) * | 2019-03-05 | 2019-05-10 | 中国华电科工集团有限公司 | The method and system of haydite are made by mixing with sludge for a kind of flyash |
| CN110257046A (en) * | 2019-07-23 | 2019-09-20 | 天津理工大学 | A method of petroleum fracturing propping agent is prepared using red mud and oil sludge and sand |
| CN116496099A (en) * | 2023-04-28 | 2023-07-28 | 天津水泥工业设计研究院有限公司 | Oil sludge ceramsite and preparation method thereof |
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| CN102414141A (en) * | 2009-03-03 | 2012-04-11 | 世乐格林株式会社 | Method for producing artificial lightweight aggregates using cold- or hot-rolled mill sludge |
| KR20130009000A (en) * | 2011-07-14 | 2013-01-23 | 이강선 | Coal gangue ceramsite and its preparation approach |
| CN103241970A (en) * | 2013-05-08 | 2013-08-14 | 清远绿由环保科技有限公司 | Sintering expansion type light ceramsite produced by using oily sludge and manufacture method of sintering expansion type light ceramsite |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109734418A (en) * | 2019-03-05 | 2019-05-10 | 中国华电科工集团有限公司 | The method and system of haydite are made by mixing with sludge for a kind of flyash |
| CN110257046A (en) * | 2019-07-23 | 2019-09-20 | 天津理工大学 | A method of petroleum fracturing propping agent is prepared using red mud and oil sludge and sand |
| CN116496099A (en) * | 2023-04-28 | 2023-07-28 | 天津水泥工业设计研究院有限公司 | Oil sludge ceramsite and preparation method thereof |
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