CN101560067B - Technology for preparing cement by dry carbide slag method - Google Patents
Technology for preparing cement by dry carbide slag method Download PDFInfo
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- CN101560067B CN101560067B CN200810092920A CN200810092920A CN101560067B CN 101560067 B CN101560067 B CN 101560067B CN 200810092920 A CN200810092920 A CN 200810092920A CN 200810092920 A CN200810092920 A CN 200810092920A CN 101560067 B CN101560067 B CN 101560067B
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- 239000002893 slag Substances 0.000 title claims abstract description 75
- 238000005516 engineering process Methods 0.000 title claims abstract description 50
- 239000004568 cement Substances 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 42
- 239000002994 raw material Substances 0.000 claims abstract description 50
- 238000000227 grinding Methods 0.000 claims abstract description 21
- 238000001035 drying Methods 0.000 claims abstract description 17
- 238000001354 calcination Methods 0.000 claims abstract description 15
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000003860 storage Methods 0.000 claims abstract description 10
- 239000002956 ash Substances 0.000 claims abstract description 9
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 claims abstract description 8
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 6
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 6
- 239000010881 fly ash Substances 0.000 claims abstract description 6
- 239000004571 lime Substances 0.000 claims abstract description 6
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims abstract description 5
- 239000004576 sand Substances 0.000 claims abstract description 5
- 239000002699 waste material Substances 0.000 claims abstract description 5
- 230000005484 gravity Effects 0.000 claims abstract description 4
- 239000005997 Calcium carbide Substances 0.000 claims description 20
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 claims description 20
- 230000008569 process Effects 0.000 claims description 12
- 235000012054 meals Nutrition 0.000 claims description 8
- 238000000354 decomposition reaction Methods 0.000 claims description 6
- 230000018044 dehydration Effects 0.000 claims description 5
- 238000006297 dehydration reaction Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 239000012716 precipitator Substances 0.000 claims description 4
- 238000012856 packing Methods 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 7
- 238000003912 environmental pollution Methods 0.000 abstract description 6
- 239000000203 mixture Substances 0.000 abstract description 6
- 239000000843 powder Substances 0.000 abstract description 6
- QPILZZVXGUNELN-UHFFFAOYSA-N sodium;4-amino-5-hydroxynaphthalene-2,7-disulfonic acid Chemical compound [Na+].OS(=O)(=O)C1=CC(O)=C2C(N)=CC(S(O)(=O)=O)=CC2=C1 QPILZZVXGUNELN-UHFFFAOYSA-N 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 238000009841 combustion method Methods 0.000 description 6
- 238000009837 dry grinding Methods 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 238000006062 fragmentation reaction Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000013467 fragmentation Methods 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical group ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 239000002989 correction material Substances 0.000 description 1
- 238000007791 dehumidification Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 238000001238 wet grinding Methods 0.000 description 1
Images
Classifications
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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
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
-
- 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
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
- Y02P40/121—Energy efficiency measures, e.g. improving or optimising the production methods
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- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to a technology for preparing cement by a dry carbide slag method, which comprises the following steps: raw material storage, transportation, mixture, calcinations, grinding, andthe like. Dry carbide slag powder with the moisture from 5 percent to 8 percent, which is discharged by a dry acetylene technical generator, is sealed, transported and stored by a pipe chain machine and a bucket lifting machine; stored raw materials and black raw materials ground in a drying process comprise aeolian sand, sulfate slag and lime slag; carbide ash is transported to a dry pipe by an FU chain transporting machine for initially mixing and drying after being automatically matched and ground by a reservoir bottom microcomputer; raw materials with the moisture which is less than 1 percent are collected by a high-efficiency cyclonic collector and are transported to a raw material homogenizing storehouse to mix by gravity; the raw materials are calcined from a three-grade preheater and a decomposing furnace to a rotary kiln; and after the raw materials are cooled, the raw materials, fly ash, carbide ash and citric acid slag are transported to a cement mill to grind after being metered by a speed-regulating constant feed weigher. The technology increases the participation quantity and the economic benefit of the carbide slag, reduces the environmental pollution and the resource waste, can be used by combining the dry acetylene producing technology and the traditional technology and can be singly used.
Description
Technical field
The present invention relates to a kind of method of utilizing dried carbide slag system cement, particularly a kind of carbide slag that will give up is through dry method system cement and reduce the method for polluting.
Background technology
At present, China many chlor-alkalis enterprise is all in extensive enlarging, and the calcium carbide route preparing chloroethylene will be the main technique route.The annual calcium carbide output of China amounted to 1481.89 ten thousand tons in 2007; The quantity discharged of carbide slag and storage over the years will be above more than one hundred million tons; The long-term contaminate environment land occupation resource of stacking has restricted the Sustainable development of SE (PVC) manufacturing enterprise, and is urgent day by day to effective utilization of carbide slag.Application technical research about carbide slag has in recent years obtained certain progress; As replacing lime be used for the fuel-burning power plant flue gas desulfurization, be used to produce calcium silicate board and materials for wall, as the additive of producing coating etc.; But employed carbide slag limited amount is difficult to digest the whole carbide slags that accumulate over the years and discharging.
Learn that according to consulting us a kind of technical process of new dry cement production technology is following: siliceous material, broken good Wingdale and correction material; Qualified raw material after feed proportioning system gets into the raw mill grinding; Send into homogenizing storehouse and store, the raw material of storage are delivered to kiln tail preheater through equipment such as air flume, chapelet, air lift mud pumps, and raw material carry out preliminary preheating in precalcining system; Dehydration and decomposition; Again through four, Pyatyi preheater, decomposing furnace, get into calcining in the rotary kiln, the calcining thermal source finally forms high temperature chamotte from coal powder in kiln head; After high temperature chamotte gets into and to pass through the grog crusher in crushing again after the cooler cooling, be delivered in the clinker warehouse by chain transport machine and store; Grog in the clinker warehouse and the gypsum after the fragmentation be through fragmentation, and the blended material after drying is sent to according to a certain ratio and carries out grinding in the cement grinding mill, qualified cement through roll-in, break up and powder separating machine is conveyed in the cement silo.This technology is dry repeatedly, preheating, and is too complicated, reaction be difficult to obtain control and raw materials cost higher, long-range conveying environmental pollution is serious, equipment damages easily, main is can not well solve problem such as useless carbide slag processing.
Adopt the technical application of carbide slag system cement will well solve the problems referred to above, not only a large amount of consumption carbide slag, and turn waste into wealth, improved its economic benefit and social benefit.Also reported popularization, application and the improvement of relevant this technology in the document in a large number, as: Bao Xianfa. carbide slag is produced the technology of cement clinker. Chinese chlor-alkali, 2006, (12); Wei Geng, Bao Xianfa. adopt carbide slag resource " dry grinding dry combustion method " new type nonaqueous cement grog production technology. SE, 2007, (07). the author has introduced several method and the developing direction of utilizing carbide slag system cement in the document.First piece of bibliographical information following several kinds of technologies: semi-wet method technology, wet grinding and dry burning technology, new dry process dry grinding dry combustion method technology, this technology comprise again directly into mill dry grinding dry combustion method technology and the prebake dry combustion method technology of dry grinding.Second piece of document then reported a kind of New Type Dry-process Cement Production technology.Above-mentioned technology is at present domesticly to utilize carbide slag to produce cement clinker to use morely, and the author has also set forth the method and the relative merits of each technology in detail.Wherein, Directly into mill dry grinding dry combustion method technology is that earlier carbide slag slurries to be made dehydration through the pressure filter press filtration be about 35% material cake; Together prepare burden with other raw materials such as Wingdale then, adopt strong vertical the sharpening of drying capacity that this high wet raw materials is dried grinding with kiln tail gas; The finished product raw material get into the new dry process nsp kiln and are sintered into cement clinker after the homogenizing metering; This production technique adopts technology such as advanced vertical grinding and precalciner kiln calcining; Rotary kiln unit volume output is high, and it is low that grog burns till hear rate, and carbide slag is few through press filtration machinery dewatering unit; But the carbide slag addition content is not high, is generally 15%.
So, if carbide slag is gone into mill to containing moisture less than 15% through prebake, then its proportioning can be brought up to more than 60%; The advanced technology such as efficient prebake, vertical grinding and precalciner kiln calcining of prebake dry grinding dry combustion method process using well solved the problems referred to above, and rotary kiln unit volume output are high; Comprehensive energy consumption is low; Maximizing easily forms scale and benefit, and the carbide slag addition content is high and treatment capacity is big, consistent with the main flow Technology of Cement industry development.But the author thinks that also its process procedure is more, flow process is complicated, not easy to operate.
As seen from the above analysis solve the technical problem of carbide slag system cement, how to innovate, energy-saving and environmental protection, economic development and use carbide slag technology for preparing cement have become carbide slag and handled and the chlor-alkali industry development key.
Summary of the invention
The objective of the invention is to solve in the prior art low to carbide slag addition content in the carbide slag system cement, wayward, problems such as economic benefit is lower, contaminate environment that equipment damages easily, operates; And then provide a kind of to carbide slag system cement---dried carbide slag addition content is high, technology is comparatively advanced, the ME rate is low, broken simple, economic benefit is high, environmental pollution is little, technological design is simple, the technology for preparing cement by dry carbide slag method that is easy to get to and controls in the operation.
A kind of technology for preparing cement by dry carbide slag method comprises following steps in order: the stages such as raw material storage, conveying, mixing, calcining, grinding; Wherein be that to utilize dry method system acetylene technology to discharge moisture content by producer be that 5%～8% dried calcium carbide ground-slag is conveyed into the carbide slag storehouse and stores through pipe chain machine, bucket lift in the raw material storage process; The raw material delivery phase adopts pipe racks secret envelope to carry; The raw materials mix stage is to grind the black meal that comes and comprise by unloading in the raw material of storage stage and the oven dry: drift-sand, sulfate slag, lime mud, Calcium Carbide Ash behind bottom of the reservior microcomputer automatic mixing, grinding separately, be delivered in the drying tube through the FU chain transport machine tentatively mix, exsiccant; Moisture content under mixed raw material is collected with rising hot gas flow entering efficient cyclone dust-precipitator is delivered to successively less than 1% mixed raw material and is carried out the gravity mixing in the raw material homogenizing storehouse; Mixed raw material is carried out preheating in the calcination stage process in precalcining system; Dehydration and decomposition; Through three grades of preheaters and decomposing furnace; Get into calcining in the rotary kiln, send into after the high temperature chamotte after the calcining is measured by microcomputer control speed governing constant feed weigher with flyash, Calcium Carbide Ash, citric acid waste through cooler cooling back and carry out grinding in the cement grinding mill, the cement packing system sent into by the qualified cement that grinding goes out or dispatch from the factory in storehouse in bulk.
Described technology for preparing cement by dry carbide slag method, its raw material calcium carbide slag are water content 5%～8% useless carbide slag that produces in the dry method system acetylene technology, have replaced the calcareous of traditional technology; Solved the problem such as stacking land occupation, difficult treatment, contaminate environment of carbide slag.
Described technology for preparing cement by dry carbide slag method, its carbide slag dry mixed system is a drying tube, makes work simplification, increases economic efficiency.
Described technology for preparing cement by dry carbide slag method; Drying tube utilizes kiln tail waste heat raw material to be dried, mixed through hot gas flow and material counter current contact with the Category Four cyclone tube that is located at the top; Make to be not more than 1%, can increase substantially the carbide slag addition content, practiced thrift cost into the control of kiln moisture content; Further solve carbide slag difficult treatment, problem of environment pollution caused.
Described technology for preparing cement by dry carbide slag method adopts pipe chain machine, pipe racks machine, buries scraper plate machine conveying calcium carbide ground-slag, has well solved the wasting of resources and problem of environmental pollution.
Described technology for preparing cement by dry carbide slag method, design adds nitrogen pipeline, acetylene on line analyzer in the calcium carbide ground-slag delivery technology; Make the safer conveying of calcium carbide ground-slag.
Described technology for preparing cement by dry carbide slag method; Carbide slag bottom of the reservior drawing mechanism is transformed into star-like reinforced frequency conversion feeder device by electronic push-pull valve; Solved and put the difficult problem that the storehouse is stopped up, is prone to the spray material, guaranteed the stability of carbide slag blanking, the precision of raising batching.
Described technology for preparing cement by dry carbide slag method, its system have been equipped with DCS computer automation system, carry out concentrated comprehensively control and management, have improved labour productivity greatly.
The present invention be utilize dried calcium carbide ground-slag with go out to grind raw material directly at the drying tube inner drying, mix after; Make into the control of kiln moisture content and be not more than a kind of simplification technology for preparing cement by dry carbide slag method of 1%; Well solved the high and low problem of carbide slag addition content of useless carbide slag intractability, the higher technology for preparing cement method of a kind of economic benefit is provided, has stopped problems such as the wasting of resources and environmental pollution.
Specifically, raw material of the present invention is that dried calcium carbide ground-slag, desert drift-sand, lime mud, flyash, sulfate slag, calcium carbide collected ash are as raw material resources; Satisfy calcining process, reduce production costs, increase the competitive power in market.Utilize drying tube and pipe racks machine, make raw material moisture content when getting into rotary kiln be not more than 1%, improved the addition content of carbide slag greatly, and raw material is carried non-environmental-pollution.Be provided with three grades of whirlwind preheating decomposition furnaces at the kiln tail; Simplified process step; Make the preliminary decomposition of raw material can reach 90%---95%, the dust that technology produces is by whole recyclings, and each dust discharge point is equipped with the dust-collecting efficiency height; Technology is dust-precipitator reliably, and each dust that produces the dirt pits recovery all is back in the production process; Further reduced pollution to environment.
The present invention can use with producing the drying acetylene process combination, also can use separately, also can directly be used for traditional technology production.
Description of drawings
Fig. 1 is the process flow sheet of the embodiment of the invention 1.
Embodiment
Describe the present invention in detail below in conjunction with accompanying drawing 1.
With reference to Fig. 1; Present embodiment 1 comprises following steps in order: a kind of technology for preparing cement by dry carbide slag method; It is that 5～8% dried calcium carbide ground-slag is conveyed into carbide slag storehouse 24 and stores through pipe chain machine 25, bucket lift 3 that the dry method system of utilization acetylene technology is discharged moisture content by producer 1; The dried calcium carbide ground-slag that stores in the storehouse delivers in the carbide slag steel storehouse 22 through pipe racks machine 23; Unload mill 2 in the control of the frequency conversion material feeder 21 of the dried calcium carbide ground-slag in the storehouse at the bottom of, constant feeder 20 and the oven dry and grind qualified black meal through chain transport machine 7 through the storehouse; In drying tube 19, tentatively mix, drying, mixed raw material gets into efficient cyclone dust-precipitator 6 with the rising hot gas flow and collects moisture content down and delivered to by chain transport machine 7, board chain hoisting machine 8 successively less than 1% mixed raw material and carry out gravity in the raw material homogenizing storehouse 9 and mix, and has guaranteed that mixed raw material goes into the kiln incinerating and stablize; Going into the black meal that unloads mill 2 in the oven dry is fed by rubber conveyer after microcomputer automatic mixing system in bottom of the reservior is prepared burden separately from drift-sand storehouse, sulfate slag storehouse, lime mud storehouse, Calcium Carbide Ash storehouse respectively; Black meal that grinds and flyash are after bucket lift 3, raw material powder separating machine 4 select powder; Meal returns and continues grinding in the mill, and qualified black meal is delivered to dehumidification system through FU chain transport machine 5; The oven dry thermal source is from kiln tail waste heat.The mixed raw material that store in the raw material homogenizing storehouse 9 storehouse of weighing through the bottom, storehouse draws off raw material, after solid flowmeter 10 meterings, delivers to kiln tail preheater 12 one-level whirlwind tube air inlet vertical ductings through air conveyer flume 11, chapelet 3; Mixed raw material is carried out preheating in precalcining system; Dehydration and decomposition through three grades of preheaters 12 and decomposing furnace, get into calcining in Φ 4.0 * 60m rotary kiln 13; (the calcining thermal source is from the fine breeze of coal powder in kiln head preparation;) material a series of chemical transformation of process in rotary kiln 13, finally forming high temperature chamotte, high temperature chamotte is delivered to storage in the clinker warehouse 16 by 18 fragmentations of grog crusher, chain bucket transfer roller 17, chapelet 3 after cooler 14 coolings; Send into after grog that stores and flyash, Calcium Carbide Ash, citric acid waste are measured by microcomputer control speed governing constant feed weigher and carry out grinding in the cement grinding mill 15, the cement packing system sent into by the qualified cement that grinding goes out or dispatch from the factory in storehouse in bulk.
Claims (1)
1. a technology for preparing cement by dry carbide slag method is characterized in that comprising following steps in order: raw material storage, conveying, mixing, calcining, grinding stage; Wherein be that to utilize dry method system acetylene technology to discharge moisture content by producer be that 5%～8% dried calcium carbide ground-slag is conveyed into the carbide slag storehouse and stores through pipe chain machine, bucket lift in the raw material storage process; The raw material delivery phase adopts pipe racks secret envelope to carry; The raw materials mix stage be by unload in the raw material of storage stage and the oven dry black meal that grinds behind bottom of the reservior microcomputer automatic mixing, grinding separately, be delivered in the drying tube through the FU chain transport machine tentatively mix, exsiccant, said black meal is drift-sand, sulfate slag, lime mud, Calcium Carbide Ash; Moisture content under mixed raw material is collected with rising hot gas flow entering efficient cyclone dust-precipitator is delivered to successively less than 1% mixed raw material and is carried out the gravity mixing in the raw material homogenizing storehouse; Mixed raw material is carried out preheating in the calcination stage process in precalcining system; Dehydration and decomposition; Through three grades of preheaters and decomposing furnace; Get into calcining in the rotary kiln, send into after high temperature chamotte is measured by microcomputer control speed governing constant feed weigher with flyash, Calcium Carbide Ash, citric acid waste through cooler cooling back and carry out grinding in the cement grinding mill, the cement packing system sent into by the qualified cement that grinding goes out or dispatch from the factory in storehouse in bulk.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200810092920A CN101560067B (en) | 2008-04-15 | 2008-04-15 | Technology for preparing cement by dry carbide slag method |
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| CN200810092920A CN101560067B (en) | 2008-04-15 | 2008-04-15 | Technology for preparing cement by dry carbide slag method |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102173608A (en) * | 2011-01-31 | 2011-09-07 | 新疆凯盛建材设计研究院（有限公司） | Method for preparing cement clinker from high-proportion carbide slag through decomposition outside kiln of five-stage preheater |
| CN102351444B (en) * | 2011-07-21 | 2013-05-22 | 新疆天业（集团）有限公司 | Method for producing high grade cement clinker from full waste residues through rapidly calcining at low temperature |
| CN102746086B (en) * | 2012-07-09 | 2014-08-27 | 新疆天业（集团）有限公司 | Technique and device for coproducing carbide slag cement in a dry-method acetylene process |
| CN102895920B (en) * | 2012-10-31 | 2015-09-23 | 重庆鹏越科技发展有限公司 | A kind of feed arrangement of dry acetylene generators |
| CN106630698A (en) * | 2016-12-25 | 2017-05-10 | 湖北知本信息科技有限公司 | Carbide slag-based cement co-production process |
| CN106630694A (en) * | 2016-12-25 | 2017-05-10 | 湖北知本信息科技有限公司 | Cement co-production technology based on lime mud |
| CN107903921B (en) * | 2017-11-07 | 2020-03-31 | 东南大学 | Carbon emission reduction system coupling cement production and spent bleaching clay recycling |
| CN116553844A (en) * | 2023-05-18 | 2023-08-08 | 南京凯盛国际工程有限公司 | Process for preparing cement clinker by jointly utilizing solid waste with low carbon dioxide emission |
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