CN1966443A - Cement chamotte production method of calcium carbide 100% substituting for natural calcic material and decomposed out of kiln - Google Patents
Cement chamotte production method of calcium carbide 100% substituting for natural calcic material and decomposed out of kiln Download PDFInfo
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- CN1966443A CN1966443A CNA2006101469074A CN200610146907A CN1966443A CN 1966443 A CN1966443 A CN 1966443A CN A2006101469074 A CNA2006101469074 A CN A2006101469074A CN 200610146907 A CN200610146907 A CN 200610146907A CN 1966443 A CN1966443 A CN 1966443A
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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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The invention relates to a technology to produce cement processed material by acetylene sludge that has totally substituted natural calcareous infarct materials. The technology includes the following steps: pulverizing the raw material: feed the filter pressed acetylene sludge into the beater, exchange heat with hot smoke, the acetylene sludge powder enters the rotoclone collector with the hot smoke, then it's sent to the powder house; the acetylene sludge powder and stove ash is sent to the powder selecting machine, the silex, pulverized coal ash and steel dregs are sent to the drier/pulverizer, the raw material powder is sent to the powder selecting machine and the selected fine powder is sent to the continuous leveling house; burning to the processed materials; the fine powder is sent to the first, second and third wind-spout tube and exchange heat with hot smoke; it is sent to the tubing decomposing stove and then is calcinated in the turning stove, the processed material is discharged from the stove end. The invention has managed to make full use of the industrial wastes which can decrease the cost, energy expenditure and the discharge of CO2. The invention has a high automaticity and the quality of the products in the invention is stable.
Description
1. The technical field is as follows: the invention discloses a process method for producing cement clinker by decomposing carbide slag 100% to replace natural calcareous raw materials outside a kiln, belongs to the field of building materials, and particularly relates to cement clinker.
2. The invention discloses a cement clinker taking carbide slag as a raw material and a dry method production method thereof, which are applied to CN200510021024.6, and discloses a method for preparing cement clinker by using a dry method vertical kiln, wherein the cement clinker is prepared by taking carbide slag as a main raw material and comprises the following raw material proportions of 60-70% of carbide slag, 3-8% of phosphorous slag, 1-3% of pyrite slag, 1-4% of phosphogypsum, 8-17% offly ash and 8-10% of coal, the raw material proportions of stirring by a planetary wheel mill are that the carbide slag, the phosphorous slag, the sulfur slag, the phosphogypsum, the fly ash and the coal are crushed, the cement clinker are extruded, dehydrated and pelletized, and the integral dry method is adopted to achieve single-line grinding, homogenization, extrusion, dehydration and pelletizing, and the integral dry method is not suitable for a national industrial vertical kiln production process, and a national industrial clinker production process with low labor intensity, namely, the carbide slag, the sulfate slag, the fly ash and the fly ash are directly discarded, so that the resource is greatly wasted, the ecological environment pollution is caused, and the investment of an enterprise is increased, the industrial waste slag is increased, the investment of the industrial slag is completely reused as a substitute for the main raw material, the cement clinker can be used as a main raw material, the main raw material can be used as a main raw material can be used as an auxiliary material for cement clinker can be used as a main raw material for cement clinker for.
3. The invention content is as follows: the invention aims to provide a method for producing cement clinker by completely replacing natural calcareous raw materials with carbide slag and adopting out-of-kiln decomposition.
The purpose of the invention is realized by the following technical scheme:
(the raw materials and the weight percentage are:
carbide slag 75.05% and silica 11.84%
4.80 percent of fly ash and 8.31 percent of steel slag.
(II) the process method comprises the following steps:
(1) grinding raw materials:
①the pressed carbide slag cake is fed into the drying crusher, and the cake is strongly heat exchanged with the hot smoke from the kiln tail in the feeding box of the crusher, then the cake and the hot smoke enter the crushing cavity through the material distributor, and are scattered into fine powder, and the fine powder and the hot smoke are fully heat exchanged, the suspended fine powder enters the cyclone dust collector along with the hot smoke, the coarse powder is scattered in the crushing cavity continuously until the coarse powder can be brought into the cyclone dust collector by the hot smoke, and the coarse powder is sent into the carbide slag dry powder storehouse for storage after being collected, the gas from the cyclone dust collector is sent to the kiln tail electric dust collector for purification treatment and then is discharged into the atmosphere, and the kiln dust collected by the electric dust collector is sent into the kiln dust storehouse for storage.
② the method comprises mixing carbide slag dry powder and kiln ash, and silica, fly ash and steel slag with an automatic mixing system, feeding the two materials into a combined powder separator, feeding the three materials into a central discharge type drying and grinding machine, grinding, discharging the raw powder from the middle part of the mill, feeding the powder into the combined powder separator, feeding the fine powder into a continuous homogenizing warehouse, distributing the coarse powder via a distributing valve, feeding a small part of the coarse powder into a central discharge type drying raw material grinding head warehouse, grinding with the raw materials fed from the bottom of the raw material storage warehouse, and feeding the large part of the raw powder into a tail grinding fine grinding warehouse.
(2) And (3) clinker firing:
① the raw material powder after being discharged from the continuous homogenizing silo is sent to the first cyclone air inlet pipeline which is communicated with the second cyclone air inlet pipeline, the raw material powder enters the first cyclone sequentially along with the hot flue gas in a tangential way to carry out suspension heat exchange with the hot flue gas, then the raw material powder deposited at the bottom of the first cyclone is discharged by the heavy hammer air-locking flap valve and enters the second cyclone air inlet pipeline which is communicated with the third cyclone air outlet pipeline, at the position, the raw material powder carries out suspension heat exchange with the hot flue gas again and is separated by the second cyclone, and the raw material powder is sent to the pipeline type decomposing furnace which is communicated with the kiln head cover through the third air pipe.
② the pulverized coal is injected from the lower part of the pipeline type decomposing furnace to be burnt, and the raw material powder is decomposed: and then enters the tertiary cyclone.
③ the predecomposition raw material powder is separated from the hot smoke by the three-stage cyclone, the predecomposition raw material powder enters the rotary kiln for calcination through the blanking pipeline at the bottom of the three-stage cyclone, and the hot smoke enters the second-stage cyclone.
④ the clinker calcined in rotary kiln is discharged from kiln head, forced ventilated and cooled by grate cooler, and sent to clinker storage.
The invention can completely solve the social problem that the industrial waste residue pollutes the ecological environment, realizes the reutilization of resources, effectively reduces the production cost and greatly reduces CO2And (4) discharging gas. The residual heat utilization of the kiln tail and kiln head waste gas is maximized, and the heat consumption is reduced by about 25 percent. The production automation degree is high, the centralized control of a central control room can be realized, the real-time control can be realized in key links, and the product quality reaches the standard stably. The production process is smooth and compact, and the occupied area is small. The labor intensity is reduced, and the labor environment is improved. The unit volume output is high, the capacity of a single production line can reach 75 ten thousand tons per year of clinker, the production line can be matched with the maximum large-scale PVC production line of 40 ten thousand tons per year produced in China at present, industrial waste residues such as carbide slag generated in the production process are completely utilized, the problem of large-scale equipment is solved, and the industrial policy of the building material industry in China is met.
4. Description of the drawings: the specific process method of the invention is given by the following flow chart and examples:
FIG. 1 is a block diagram of the process flow of the present invention.
Legend: 1. the device comprises a rubber belt conveyor 2, an air-locking rotary feeder 3, a pipeline 4, a drying crusher 5, a primary cyclone 6, a secondary cyclone 7, a heavy hammer air-locking flap valve 8, an air duct 9, a pipeline type decomposing furnace 10, a coal nozzle 11, a high-temperature butterfly valve 12, a tertiary air duct 13, a rotary kiln 14, a kiln tail smoke chamber 15, a tertiary cyclone 16, a raw material homogenizing warehouse 17, a lifter 18, an air conveying chute 19, a Roots blower 20, a solid flow meter 21, a system blower 22, a material separating valve 23, a middle-discharging type drying and pulverizing mill 24, an air box pulse bag dust collector 25, a silica raw material warehouse 26, a fly ash warehouse 27, a steel slag warehouse 28, a quantitative feeder 29, a combined type powder selector 30, a chain conveyor 31, an air box pulse bag collector 32, a chimney 33, a kiln ash warehouse 34, a carbide slag dry powder warehouse 35, a cyclone dust collector 36, a coal powder scale 37, a coal powder warehouse 38, a vertical roller mill 39, a cooked material warehouse 40, A chain bucket conveyor 41, a grate cooler 42 and a kiln head cover.
5. The specific implementation mode is as follows:
example (b):
the raw materials and weight percentage are:
carbide slag 75.05% and silica 11.84%
4.80 percent of fly ash and 8.31 percent of steel slag.
(II) the process method comprises the following steps:
(1) grinding raw materials:
① transferring the pressed carbide slag cake with moisture content less than or equal to 37% by a belt conveyor 1, feeding the carbide slag cake into a drying crusher 4 through an air-locking rotary feeder 2, communicating a kiln tail smoke chamber 14 of a rotary kiln 13 with a pipeline type decomposing furnace 9, an air pipe 8, a third-stage cyclone cylinder 15, a second-stage cyclone cylinder 6 and a first-stage cyclone cylinder 5 in sequence through a pipeline 3, communicating an air outlet pipeline 3 of the third-stage cyclone cylinder 15 with a cone part of the first-stage cyclone cylinder 5, communicating the upper part of the first-stage cyclone cylinder 5 with the drying crusher 4 through the pipeline 3, carrying out intense heat exchange on the carbide slag cake and hot smoke from a kiln tail smoke chamber 34 in a feeding box of the drying crusher 4, then entering a crushing cavity of the machine througha material distributor and a hot air flow, scattering the carbide slag cake to fine powder with a diameter less than 1mm between a high-speed rotary rotor and an arc plate, carrying out sufficient heat exchange with the hot smoke gas, enabling the suspended fine powder to enter a dust collector 35 along with the hot smoke gas, continuously scattering cyclone coarse powder in the crushing cavity, enabling the dust collector to be carried into a dust collector 35 until the dust collector 35, conveying the collected carbide slag cake to an air bag storage system 30, conveying the dust collector by a dust collector 21, and an air dust collection system, and an air collection system, and a dust collection system, and a.
② the auxiliary raw materials of the silica raw material warehouse 25, the fly ash warehouse 26 and the steel slag warehouse 27 are automatically mixed by the quantitative feeders 28 at the bottom of the respective warehouse, and are sent into the middle discharge type drying and pulverizing mill 23 by the belt conveyor 1 and the elevator 17 for pulverizing, the pulverized raw material powder is discharged from the middle part of the mill and is sent into the combined powder concentrator 29 by the air conveying chute 18, the elevator 17 and the air conveying chute 18, the raw material of the carbide slag dry powder warehouse 34 and the kiln ash warehouse 33 is automatically mixed by the quantitative feeders 28 at the bottom of the respective warehouse, is transferred to the elevator 17 by the belt conveyor 1 and is sent into the combined powder concentrator 29 by the air conveying chute 18, the raw material powder formed by the combination of the above five raw materials is sorted, the selected fine powder with the granularity of less than or equal to 0.08mm is sent into the continuous raw material homogenizing mill 16 by the air conveying chute 18, the elevator 17 and the air conveying chute 18, the coarse powder with the granularity of more than 0.08mm is sent intothe continuous raw material homogenizing mill 16 by the air conveying chute 18 after being divided by the material valve 22, a small part of the air conveying chute 18 is sent back into the middle discharge type drying and pulverizing mill 23, the dry powder warehouse is sent into the dry powder mill 23 by the dry powder mill 23, the dry powder grinder, the dry powder warehouse 13, the flue gas is continuously sent into the dry tail gas tail end mill 13, the flue gas tail gas flow meter of the dry tail grinding mill 23, and is continuously sent into the dry tail gas tail grinding mill 13, and is sent into the dry tail gas tail grinding mill 13.
(2) And (3) clinker firing:
① the raw meal powder in the raw meal homogenizing storehouse 16 is measured by the solid flow meter 20 and sent to the pipeline 3 of the first-stage cyclone 5 and the second-stage cyclone 6 through the air conveying chute 18 and the lifter 17, the raw meal powder enters the first-stage cyclone 5 tangentially along with the hot smoke from the kiln tail smoke chamber 14 in sequence, makes spiral motion in the first-stage cyclone 5 and exchanges heat with the hot smoke fully, because of the centrifugal force, the raw meal powder is separated from the hot smoke and deposited at the bottom of the first-stage cyclone 5, in the short dispersion and aggregation process, the raw meal powder is heated to the temperature close to the hot air flow at the outlet pipeline 3 of the second-stage cyclone 6, then the raw meal powder is discharged from the heavy hammer lock air flap valve 7 at the bottom of the first-stage cyclone 5, passes through the air inlet pipeline 3 of the second-stage cyclone 6, the air inlet pipeline 3 of the second-stage cyclone 6 is communicated with the air outlet pipeline 3 of the cyclone 15, and the raw meal powder exchanges heat with the hot smoke again, and is separated by the second-stage cyclone 6 and sent into the pipeline decomposing furnace 9.
② pulverized coal is injected from coal injection nozzle 10 at the lower part of the pipe type decomposing furnace 9 by Roots blower 19 and is combustedIn the middle, because of the considerable velocity difference caused by the vortex motion, the rapid mixing and heat exchange between the hot gas flow and the raw meal powder are promoted, and the flameless combustion is formed in the pipe type decomposing furnace 9. The raw meal undergoes the following decomposition reaction in downward motion: to make C in the raw meal powdera(OH)2The decomposition rate of the cyclone reaches 85 to 90 percent and enters the third-stage cyclone 15.
③ the pre-decomposed raw meal is separated from the hot flue gas flow by the three-stage cyclone 15, the raw meal enters the rotary kiln 13 for calcination through the blanking pipeline 3 at the bottom of the cyclone 15, and the hot flue gas flow enters the two-stage cyclone 6.
④ the hot smoke of the kiln hood 42 is led into the pipeline type decomposing furnace 9 through the tertiary air pipe 12, and the tertiary air pipe 12 is provided with a high temperature butterfly valve 11 to control the air quantity.
⑤ the clinker calcined by the rotary kiln 13 is discharged from the kiln head, after forced ventilation and cooling by the grate cooler 41, it is sent into the clinker storage 39 by the chain bucket conveyer 40. part of the hot smoke of the grate cooler 41 is led into the vertical roller mill 38 through the pipeline 3 to dry the coal powder, the other part is collected by the air box pulse bag dust collector 31, the purified waste gas is discharged into the atmosphere through the system fan 21 and the chimney 32.
Claims (2)
1. A process method for producing cement clinker by 100% replacement of natural calcareous raw material by carbide slag through out-kiln decomposition is characterized in that: the material is prepared from the following raw materials in percentage by weight:
carbide slag 75.05% and silica 11.84%
4.80 percent of fly ash and 8.31 percent of steel slag.
2. A process method for producing cement clinker by 100% replacement of natural calcareous raw material by carbide slag through out-kiln decomposition is characterized in that: the process method for firing the cement clinker comprises the following steps:
(1) grinding raw materials:
① feeding the pressed carbide slag cake into a drying crusher, performing strong heat exchange with hot flue gas from the kiln tail in a feeding box, then feeding the carbide slag cake into a crushing cavity through a material distribution device together with the hot flue gas, scattering the carbide slag cake into fine powder between a high-speed rotary rotor and an arc-shaped plate, performing sufficient heat exchange with the hot flue gas, and feeding suspended fine powder into a cyclone dust collector along with the hot flue gas;
② mixing carbide slag dry powder and kiln ash, and silica, fly ash and steel slag with automatic mixing system at the bottom of storage storehouse, feeding them into combined powder separator, feeding them into middle-discharging drying and grinding machine, discharging the ground raw powder from the middle part of the mill, feeding the fine powder with granularity less than 0.08mm into continuous homogenizing storehouse, feeding the coarse powder with granularity greater than 0.08mm into middle-discharging drying raw material mill, feeding part of the coarse powder into middle-dischargingdrying raw material mill, feeding the coarse powder into tail fine mill, feeding the hot flue gas into middle-discharging drying raw material mill, feeding part of the flue gas into middle-discharging drying raw material mill, feeding the waste gas into air box pulse dust remover, and discharging the purified waste gas into atmosphere;
(2) and (3) clinker firing:
① the raw material powder after the continuous homogenizing storehouse is delivered to the first cyclone air inlet pipeline, the air inlet pipeline is connected with the second cyclone air inlet pipeline, the raw material powder enters the first cyclone along with the hot smoke in sequence tangentially, and carries out suspension heat exchange with the hot smoke air flow, then the raw material powder deposited at the bottom of the cylinder is discharged by the heavy hammer air-lock flap valve, enters the second cyclone air inlet pipeline, the pipeline is connected with the third cyclone air outlet pipeline, at this point, the raw material powder carries out suspension heat exchange with the hot smoke again, and is separated by the second cyclone, and is delivered into the pipeline type decomposing furnace, and the furnace is connected with the kiln head cover through the third air pipe;
② the pulverized coal is injected from the lower part of the pipeline type decomposing furnace to be burnt, and the raw material powder is decomposed: then enters a three-stage cyclone cylinder;
③ separating the pre-decomposed raw material powder from the hot flue gas by a three-stage cyclone, feeding the pre-decomposed raw material powder into a rotary kiln through a feeding pipeline at the bottom of the three-stage cyclone for calcination, and feeding the hot flue gas into a secondary cyclone;
④ the clinker calcined by the rotary kiln is discharged from the kiln head, after forced ventilation and cooling by the grate cooler, it is sent into the clinker storage, part of the hot smoke of the grate cooler is led into the vertical roller mill through the pipeline to dry the coal powder, the other part is collected by the electric dust collector, the purified waste gas is discharged into the atmosphere.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101469074A CN100556840C (en) | 2006-11-12 | 2006-11-12 | Carbide slag 100% substitutes natural calcareous raw material kiln and decomposes the method for producing cement clinker outward |
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| CNB2006101469074A CN100556840C (en) | 2006-11-12 | 2006-11-12 | Carbide slag 100% substitutes natural calcareous raw material kiln and decomposes the method for producing cement clinker outward |
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| CN1966443A true CN1966443A (en) | 2007-05-23 |
| CN100556840C CN100556840C (en) | 2009-11-04 |
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| CN102557499A (en) * | 2011-12-26 | 2012-07-11 | 新疆天山水泥股份有限公司 | Carbide slag dry power anti-blocking device and carbide slag dry power storage method |
| CN103813989A (en) * | 2011-10-19 | 2014-05-21 | 电气化学工业株式会社 | Process for dewatering slurry |
| CN104086107A (en) * | 2014-07-03 | 2014-10-08 | 新疆天业（集团）有限公司 | Method of comprehensively utilizing precipitator ash and slag of calcium carbide furnace |
| CN106269178A (en) * | 2016-10-13 | 2017-01-04 | 内蒙古鄂尔多斯电力冶金集团股份有限公司 | A kind of raw material vertical-grinding system |
| CN107200486A (en) * | 2017-07-11 | 2017-09-26 | 陕西北元化工集团股份有限公司 | A kind of highly doped industrial residue cement and preparation method thereof |
| CN107401746A (en) * | 2017-08-30 | 2017-11-28 | 长沙中硅水泥技术开发有限公司 | The processing system and its processing method of aluminium electroloysis slag from delining |
| CN110194603A (en) * | 2019-06-28 | 2019-09-03 | 冀东海天水泥闻喜有限责任公司 | A kind of organic silicon waste residue comprehensive reutilization method |
| CN112159129A (en) * | 2020-08-31 | 2021-01-01 | 内蒙古亿利冀东水泥有限责任公司 | Novel cement with industrial waste residues as raw materials and preparation method thereof |
| CN112194389A (en) * | 2020-09-10 | 2021-01-08 | 内蒙古亿利冀东水泥有限责任公司 | Strength attenuation resistant oil well cement and preparation method thereof |
| CN113526885A (en) * | 2020-04-13 | 2021-10-22 | 内蒙古亿利冀东水泥有限责任公司 | Road portland cement and preparation method thereof |
| CN114289161A (en) * | 2021-12-31 | 2022-04-08 | 河南黎明重工科技股份有限公司 | System for be used for preparing CFB power plant desulfurization limestone flour |
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- 2006-11-12 CN CNB2006101469074A patent/CN100556840C/en active Active
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| CN103813989A (en) * | 2011-10-19 | 2014-05-21 | 电气化学工业株式会社 | Process for dewatering slurry |
| CN103813989B (en) * | 2011-10-19 | 2016-01-20 | 电化株式会社 | The dewatering of mud |
| CN102557499B (en) * | 2011-12-26 | 2013-08-07 | 新疆天山水泥股份有限公司 | Carbide slag dry power anti-blocking device and carbide slag dry power storage method |
| CN102557499A (en) * | 2011-12-26 | 2012-07-11 | 新疆天山水泥股份有限公司 | Carbide slag dry power anti-blocking device and carbide slag dry power storage method |
| CN104086107A (en) * | 2014-07-03 | 2014-10-08 | 新疆天业（集团）有限公司 | Method of comprehensively utilizing precipitator ash and slag of calcium carbide furnace |
| CN106269178B (en) * | 2016-10-13 | 2018-09-14 | 内蒙古鄂尔多斯电力冶金集团股份有限公司 | A kind of raw material vertical-grinding system |
| CN106269178A (en) * | 2016-10-13 | 2017-01-04 | 内蒙古鄂尔多斯电力冶金集团股份有限公司 | A kind of raw material vertical-grinding system |
| CN107200486A (en) * | 2017-07-11 | 2017-09-26 | 陕西北元化工集团股份有限公司 | A kind of highly doped industrial residue cement and preparation method thereof |
| CN107401746A (en) * | 2017-08-30 | 2017-11-28 | 长沙中硅水泥技术开发有限公司 | The processing system and its processing method of aluminium electroloysis slag from delining |
| CN110194603A (en) * | 2019-06-28 | 2019-09-03 | 冀东海天水泥闻喜有限责任公司 | A kind of organic silicon waste residue comprehensive reutilization method |
| CN113526885A (en) * | 2020-04-13 | 2021-10-22 | 内蒙古亿利冀东水泥有限责任公司 | Road portland cement and preparation method thereof |
| CN112159129A (en) * | 2020-08-31 | 2021-01-01 | 内蒙古亿利冀东水泥有限责任公司 | Novel cement with industrial waste residues as raw materials and preparation method thereof |
| CN112194389A (en) * | 2020-09-10 | 2021-01-08 | 内蒙古亿利冀东水泥有限责任公司 | Strength attenuation resistant oil well cement and preparation method thereof |
| CN114289161A (en) * | 2021-12-31 | 2022-04-08 | 河南黎明重工科技股份有限公司 | System for be used for preparing CFB power plant desulfurization limestone flour |
| CN114289161B (en) * | 2021-12-31 | 2023-10-24 | 河南黎明重工科技股份有限公司 | System for preparing CFB power plant desulfurized limestone powder |
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Effective date of registration: 20101027 Address after: 830000 No. 12 West Rainbow Road, the Xinjiang Uygur Autonomous Region, Urumqi Patentee after: Xinjiang Kasen building materials design & Research Institute (Co., Ltd.) Address before: 830000 No. 12 West Rainbow Road, the Xinjiang Uygur Autonomous Region, Urumqi Patentee before: Xinjiang Building Materials Designing Institute |