CN110698092A - Method for producing high-strength clinker from high-magnesium limestone - Google Patents
Method for producing high-strength clinker from high-magnesium limestone Download PDFInfo
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- CN110698092A CN110698092A CN201911020959.0A CN201911020959A CN110698092A CN 110698092 A CN110698092 A CN 110698092A CN 201911020959 A CN201911020959 A CN 201911020959A CN 110698092 A CN110698092 A CN 110698092A
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- Prior art keywords
- limestone
- magnesium
- clinker
- coal
- magnesium limestone
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Classifications
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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
- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
-
- 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
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/43—Heat treatment, e.g. precalcining, burning, melting; Cooling
- C04B7/44—Burning; Melting
-
- 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
Abstract
The invention relates to a method for producing high-strength clinker by using high-magnesium limestone, which comprises sulfuric acid residue, high-magnesium limestone, low-magnesium limestone, shale, sandstone and coal gangue, wherein the weight of the raw materials is 1000 g: 50-70g of sulphuric acid residue, 80-200g of high-magnesium limestone, 600-760g of low-magnesium limestone, 20-40g of shale, 20-04g of sandstone and 20-03g of coal gangue. The invention adopts high-magnesium limestone to replace part of low-magnesium high-calcium high-quality limestone, increases coal gangue, and reforms the clinker rate value. Compared with the traditional silicate clinker burdening, the invention uses high-magnesium limestone and coal gangue as substitute materials, thus being easy to reduce the burning temperature of the clinker, improving the burning easiness of the clinker and reducing the energy consumption of the clinker; effectively utilizes mine high-magnesium limestone resources and waste coal gangue, solves the resource problem and the environmental pollution problem, finds a way for improving the ecological environment, and has higher social benefit and environmental benefit.
Description
Technical Field
The invention relates to the technical field of high-magnesium limestone production, in particular to a method for producing high-strength clinker from high-magnesium limestone.
Background
At present, in the preparation process of domestic silicate clinker, limestone material generally adopts low-magnesium high-calcium high-quality limestone which has higher requirements on mines, and along with the increase of the using amount, the low-magnesium high-calcium limestone is increasingly in short supply, the enterprise cost is increased, and the production of part of enterprises is difficult to continue.
The high-magnesium limestone is used as a limestone mine intercalated ore, the MgO content is 3% -15%, and the cement enterprise mine is generally used as waste ore or only used for aggregate production in the mining process, so that the waste is serious, and the comprehensive utilization of resources is not facilitated. Some enterprises use part of high-magnesium limestone in the production process, but the failure of the kiln production process is frequent, the energy consumption of clinker is high, the strength of the clinker is lower than 50MPa, and the strength of cement in 28 days cannot be guaranteed. How to reasonably treat and utilize the high-magnesium limestone in the cement industry to achieve comprehensive utilization of resources and energy conservation is a problem which needs to be solved urgently at present.
Disclosure of Invention
The invention aims to provide a method for producing high-strength clinker by using high-magnesium limestone, which aims to solve the problems that the mine of a cement enterprise provided in the background technology is generally used as waste ore or only used for producing aggregate in the mining process, is seriously wasted and is not beneficial to comprehensive utilization of resources. Some enterprises use part of high-magnesium limestone in the production process, but the failure of the kiln production process is frequent, the energy consumption of clinker is high, the strength of the clinker is lower than 50MPa, and the strength of cement in 28 days cannot be guaranteed. How to reasonably treat and utilize high-magnesium limestone in the cement industry to achieve comprehensive utilization of resources and energy conservation is a problem which needs to be solved urgently at present.
In order to achieve the purpose, the invention provides the following technical scheme: the method for producing the high-strength clinker by using the high-magnesium limestone comprises the following steps of sulfuric acid residue, high-magnesium limestone, low-magnesium limestone, shale, sandstone and coal gangue, wherein the weight of the raw materials is 1000 g: 50-70g of sulphuric acid residue, 80-200g of high-magnesium limestone, 600-760g of low-magnesium limestone, 20-40g of shale, 20-04g of sandstone and 20-03g of coal gangue.
Preferably, the raw materials and the mixture ratio are as follows: 5-7% of pyrite cinder, 8-20% of high-magnesium limestone, 60-76% of low-magnesium limestone, 2-4% of shale, 2-4% of sandstone and 2-3% of coal gangue
Preferably, the production steps are as follows:
1) taking materials in advance for analyzing components of mine limestone, feeding low-magnesium limestone and high-magnesium limestone into a limestone crusher strictly according to a given proportion of a laboratory, feeding the crushed limestone into a circular limestone pre-homogenization shed for homogenization through a belt conveyor and a stacker, and feeding the homogenized limestone into a limestone batching warehouse through a limestone reclaimer and a belt conveyor.
2) The sulfuric acid slag, the shale and the sandstone are respectively crushed by a back-impact crusher and then enter a long pre-homogenization shed for respectively homogenizing and stacking through a belt conveyer and a stacker, and the homogenized materials respectively enter respective batching storehouses through a material taking machine and the belt conveyer.
3) The coal gangue enters a long pre-homogenization shed through a belt weigher, a belt conveyer and a stacker for stacking, and the homogenized coal gangue enters a coal gangue batching warehouse through a reclaimer and the belt conveyer.
4) Raw coal enters a long pre-homogenization shed through a belt weigher, a belt conveyor and a stacker to be stacked, the homogenized coal enters a coal mill grinding head bin through a material taking machine and the belt conveyor, and then enters a coal mill for grinding through a belt metering weigher. The pulverized coal is carried into a powder selecting machine by hot air, the coarse powder returns to a coal mill for continuous grinding, and the qualified pulverized coal enters a kiln head coal powder bin and a kiln tail coal powder bin by bag dust collection. The coal powder enters the kiln head and the decomposing furnace for combustion through the rotor scale according to the required amount.
5) Limestone, pyrite cinder, sandstone, shale and coal gangue enter a raw material vertical mill for grinding through a belt scale, a belt conveyor and a sealing plate feeder, and raw material powder qualified in powder selection enters a raw material homogenizing warehouse through an air conveying chute. Raw materials in the homogenizing silo enter the preheater through the homogenizing silo, the air conveying chute, the transfer silo, the punching plate metering scale, the elevator and the preheater air conveying chute according to requirements, the raw materials are decomposed by the preheater and the decomposing furnace (880 plus 900 ℃) and then enter the kiln for high-temperature calcination (1350 plus 1450 ℃) to form granular clinker, and the clinker enters the clinker silo after being cooled by the grate cooler.
The invention adopts high-magnesium limestone to replace part of low-magnesium high-calcium high-quality limestone, increases coal gangue, and reforms the clinker rate value. Compared with the traditional silicate clinker burdening, the invention uses high-magnesium limestone and coal gangue as substitute materials, thus being easy to reduce the burning temperature of the clinker, improving the burning easiness of the clinker and reducing the energy consumption of the clinker; the mine high-magnesium limestone resource and the waste coal gangue are effectively utilized, the resource problem and the environmental pollution problem are solved, a way is found for improving the ecological environment, and the social benefit and the environmental benefit are higher;
compared with the traditional clinker, the clinker strength is not reduced in 28 days under the same condition; the standard coal consumption of each ton of the cooked material is reduced by 8 kg; the energy consumption is reduced by 10 percent. Under the same condition with the traditional high-magnesium clinker ratio, the 28-day strength of the clinker is improved by 5 MPa; the standard coal consumption of each ton of clinker is reduced by 10 kg; the energy consumption is reduced by 12 percent. The invention uses high magnesium limestone and coal gangue as raw materials of calcined silicate clinker, which is beneficial to improving the easy burning property of the clinker and reducing the heat consumption and the power consumption of the clinker. The invention effectively utilizes the high-magnesium limestone interlayer and coal mine gangue in the limestone mine, solves the problems of resource comprehensive utilization and environmental pollution, lays a foundation for the sustainable development of the cement industry, and has higher social benefit, economic value and environmental benefit.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely in the following embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Preferably, the raw materials and the mixture ratio are as follows: 5-7% of pyrite cinder, 8-20% of high-magnesium limestone, 60-76% of low-magnesium limestone, 2-4% of shale, 2-4% of sandstone and 2-3% of coal gangue
Example 1
A method for producing high-strength clinker by using high-magnesium limestone comprises the following raw materials in parts by weight: 7% of pyrite cinder, 8% of high-magnesium limestone, 76% of low-magnesium limestone, 4% of shale, 2% of sandstone and 3% of coal gangue.
Example 2
A method for producing high-strength clinker by using high-magnesium limestone comprises the following raw materials in parts by weight: 7% of pyrite cinder, 10% of high-magnesium limestone, 75% of low-magnesium limestone, 2% of shale, 4% of sandstone and 2% of coal gangue.
Example 3
A method for producing high-strength clinker by using high-magnesium limestone comprises the following raw materials in parts by weight: 7% of pyrite cinder, 15% of high-magnesium limestone, 70% of low-magnesium limestone, 2% of shale, 3% of sandstone and 3% of coal gangue.
Example 4
A method for producing high-strength clinker by using high-magnesium limestone comprises the following raw materials in parts by weight: 8% of pyrite cinder, 12% of high-magnesium limestone, 73% of low-magnesium limestone, 2% of shale, 3% of sandstone and 2% of coal gangue.
Example 5
A method for producing high-strength clinker by using high-magnesium limestone comprises the following raw materials in parts by weight: 7% of pyrite cinder, 13% of high-magnesium limestone, 72% of low-magnesium limestone, 2% of shale, 3% of sandstone and 3% of coal gangue.
Example 6
A method for producing high-strength clinker by using high-magnesium limestone comprises the following raw materials in parts by weight: 5% of pyrite cinder, 20% of high-magnesium limestone, 65% of low-magnesium limestone, 4% of shale, 3% of sandstone and 3% of coal gangue.
And (3) test results:
example 3 of the invention compares the chemical analysis results of the formula of silicate clinker produced by high-magnesium limestone with the chemical analysis results of the traditional clinker
In example 3 of the present invention, the formula test report of silicate clinker produced from high-magnesium limestone is compared with that of the traditional clinker in Table 2.
Table 2: example 3 comparison of formula quality detection results of silicate clinker produced by high-magnesium limestone
The test results show that: compared with the traditional clinker, the clinker strength is not reduced in 28 days under the same condition; the standard coal consumption of each ton of clinker is reduced by 8 kg; the energy consumption is reduced by 10 percent. Under the same condition with the traditional high-magnesium clinker ratio, the 28-day strength of the clinker is improved by 5 MPa; the standard coal consumption of each ton of clinker is reduced by 10 kg; the energy consumption is reduced by 12 percent. The invention uses high magnesium limestone and coal gangue as raw materials of calcined silicate clinker, which is beneficial to improving the easy burning property of the clinker and reducing the heat consumption and the power consumption of the clinker. The invention effectively utilizes the interlayer high-magnesium limestone and coal mine gangue in the limestone mine, solves the problems of resource comprehensive utilization and environmental pollution, lays a foundation for the sustainable development of the cement industry, and has higher social benefit, economic value and environmental benefit.
The method comprises the following specific implementation steps:
1) the ingredients of mine limestone are taken and analyzed in advance, low-magnesium limestone and high-magnesium limestone enter a limestone crusher strictly according to the given proportion of a laboratory, the crushed limestone enters a circular limestone pre-homogenization shed for homogenization through a belt conveyor and a stacker, and the homogenized limestone enters a limestone batching warehouse through a limestone taking machine and a belt conveyor.
2) The iron tailings, the shale and the sandstone are respectively crushed by a back-impact crusher, then enter a long pre-homogenization shed for respectively homogenizing and stacking materials through a belt conveyer and a stacker, and the homogenized materials respectively enter respective batching storehouses through a material taking machine and a belt conveyer.
3) The coal gangue enters a long pre-homogenization shed through a belt weigher, a belt conveyer and a stacker for stacking, and the homogenized coal gangue enters a coal gangue batching warehouse through a reclaimer and the belt conveyer.
4) Raw coal enters a long pre-homogenization shed through a belt weigher, a belt conveyor and a stacker to be stacked, the homogenized coal enters a coal mill grinding head bin through a material taking machine and the belt conveyor, and then enters a coal mill for grinding through a belt metering weigher. The pulverized coal is carried into a powder selecting machine by hot air, the coarse powder returns to a coal mill for continuous grinding, and the qualified pulverized coal enters a kiln head coal powder bin and a kiln tail coal powder bin by bag dust collection. The coal powder enters the kiln head and the decomposing furnace for combustion through the rotor scale according to the required amount.
5) The limestone, the iron tailings, the sandstone, the shale and the coal gangue are metered by a belt scale, enter a raw material vertical mill for grinding by a belt conveyer and a sealing plate feeder, and qualified raw material powder enters a raw material homogenizing warehouse by an air conveying chute. Raw materials in the homogenizing silo enter the preheater through the homogenizing silo, the air conveying chute, the transfer silo, the punching plate metering scale, the elevator and the preheater air conveying chute according to requirements, the raw materials are decomposed by the preheater and the decomposing furnace (880 plus one charge of 900 ℃) and then enter the kiln for high-temperature calcination (1350 plus one charge of 1450 ℃) to form particle clinker, and the clinker enters the clinker silo after being cooled by the grate cooler.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes, modifications, equivalents, improvements and the like can be made therein without departing from the spirit and scope of the invention.
Claims (3)
1. The method for producing the high-strength clinker by using the high-magnesium limestone comprises the following steps of sulfuric acid residue, high-magnesium limestone, low-magnesium limestone, shale, sandstone and coal gangue, and is characterized in that the weight of the raw materials is 1000 g: 50-70g of sulphuric acid residue, 80-200g of high-magnesium limestone, 600-760g of low-magnesium limestone, 20-40g of shale, 20-04g of sandstone and 20-03g of coal gangue.
2. The method for producing high-strength clinker from high-magnesium limestone according to claim 1, wherein the method comprises the following steps: the raw materials and the mixture ratio are as follows: 5-7% of pyrite cinder, 8-20% of high-magnesium limestone, 60-76% of low-magnesium limestone, 2-4% of shale, 2-4% of sandstone and 2-3% of coal gangue.
3. The method for producing high-strength clinker from high-magnesium limestone according to claim 1, wherein the method comprises the following steps: the production steps are as follows:
1) taking materials in advance for analyzing components of mine limestone, feeding low-magnesium limestone and high-magnesium limestone into a limestone crusher strictly according to a given proportion of a laboratory, feeding the crushed limestone into a circular limestone pre-homogenization shed for homogenization through a belt conveyor and a stocker, and feeding the homogenized limestone into a limestone batching warehouse through a limestone reclaimer and a belt conveyor.
2) The sulfuric acid slag, the shale and the sandstone are respectively crushed by a back-impact crusher and then enter a long pre-homogenization shed for respectively homogenizing and stacking through a belt conveyer and a stacker, and the homogenized materials respectively enter respective batching storehouses through a material taking machine and the belt conveyer.
3) The coal gangue enters a long pre-homogenization shed through a belt weigher, a belt conveyer and a stacker for stacking, and the homogenized coal gangue enters a coal gangue batching warehouse through a reclaimer and the belt conveyer.
4) Raw coal enters a long pre-homogenization shed through a belt weigher, a belt conveyor and a stacker to be stacked, the homogenized coal enters a coal mill grinding head bin through a material taking machine and the belt conveyor, and then enters a coal mill for grinding through a belt metering weigher. The pulverized coal is carried into a powder selecting machine by hot air, the coarse powder returns to a coal mill for continuous grinding, and the qualified pulverized coal enters a kiln head coal powder bin and a kiln tail coal powder bin by bag dust collection. The coal powder enters the kiln head and the decomposing furnace for combustion through the rotor scale according to the required amount.
5) Limestone, pyrite cinder, sandstone, shale and coal gangue enter a raw material vertical mill for grinding through a belt scale, a belt conveyor and a sealing plate feeder, and raw material powder qualified by powder selection enters a raw material homogenizing warehouse through an air conveying chute. Raw materials in the homogenizing silo enter the preheater through the homogenizing small silo, the air conveying chute, the transfer small silo, the punching plate metering scale, the elevator and the preheater air conveying chute according to requirements, the raw materials are decomposed by the preheater and the decomposing furnace (880 plus 900 ℃) and then enter the kiln for high-temperature calcination (1350 plus 1450 ℃) to form particle clinker, and the clinker is cooled by the grate cooler and then is conveyed to the clinker silo through the inclined chain conveyor.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111499230A (en) * | 2020-04-28 | 2020-08-07 | 安徽盘景水泥有限公司 | Coal gangue solid waste material as raw material admixture |
| CN111533471A (en) * | 2020-05-04 | 2020-08-14 | 常州盘石水泥有限公司 | Cement raw material adopting high magnesium stone |
| CN112390548A (en) * | 2020-11-23 | 2021-02-23 | 山西太钢不锈钢股份有限公司 | High-magnesium limestone calcining method and lime produced by same |
| CN113185154A (en) * | 2021-01-11 | 2021-07-30 | 中国地质科学院矿产综合利用研究所 | Method for preparing cement clinker by using rare earth tailings |
| CN115321850A (en) * | 2022-09-05 | 2022-11-11 | 富源县宏发恒际水泥有限公司 | Raw material, clinker and cement formula and preparation method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4219363A (en) * | 1978-09-29 | 1980-08-26 | Baklanov Grigory M | Process for the preparation of Portland cement clinker |
| CN1176231A (en) * | 1997-07-19 | 1998-03-18 | 浙江大学 | Production method of slightly expanded Portland cement |
| CN101041560A (en) * | 2003-09-17 | 2007-09-26 | 中国建筑材料科学研究院 | High-magnesium low-heat portland cement clinker aggregate and preparation method thereof |
| CN101353231A (en) * | 2008-08-01 | 2009-01-28 | 湖南石门特种水泥有限公司 | High-magnesium moderate-heat portland cement and production method thereof |
| CN102898050A (en) * | 2012-10-22 | 2013-01-30 | 中国建筑材料科学研究总院 | High-magnesium minimum-inflation low-heat cement and preparation method thereof |
| CN103232179A (en) * | 2012-04-28 | 2013-08-07 | 中国建筑材料科学研究总院 | High-magnesium calcium sulphoaluminate-modified portland cement clinker and production method thereof |
| CN104926257A (en) * | 2015-06-18 | 2015-09-23 | 葛洲坝集团水泥有限公司 | Anti-fracture seepage-proofing cement and preparation method thereof |
| CN110282890A (en) * | 2019-07-11 | 2019-09-27 | 武汉轻工大学 | A kind of anti-crack and anti-seepage cement and preparation method thereof containing industrial residue |
-
2019
- 2019-10-25 CN CN201911020959.0A patent/CN110698092A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4219363A (en) * | 1978-09-29 | 1980-08-26 | Baklanov Grigory M | Process for the preparation of Portland cement clinker |
| CN1176231A (en) * | 1997-07-19 | 1998-03-18 | 浙江大学 | Production method of slightly expanded Portland cement |
| CN101041560A (en) * | 2003-09-17 | 2007-09-26 | 中国建筑材料科学研究院 | High-magnesium low-heat portland cement clinker aggregate and preparation method thereof |
| CN101353231A (en) * | 2008-08-01 | 2009-01-28 | 湖南石门特种水泥有限公司 | High-magnesium moderate-heat portland cement and production method thereof |
| CN103232179A (en) * | 2012-04-28 | 2013-08-07 | 中国建筑材料科学研究总院 | High-magnesium calcium sulphoaluminate-modified portland cement clinker and production method thereof |
| CN102898050A (en) * | 2012-10-22 | 2013-01-30 | 中国建筑材料科学研究总院 | High-magnesium minimum-inflation low-heat cement and preparation method thereof |
| CN104926257A (en) * | 2015-06-18 | 2015-09-23 | 葛洲坝集团水泥有限公司 | Anti-fracture seepage-proofing cement and preparation method thereof |
| CN110282890A (en) * | 2019-07-11 | 2019-09-27 | 武汉轻工大学 | A kind of anti-crack and anti-seepage cement and preparation method thereof containing industrial residue |
Non-Patent Citations (1)
| Title |
|---|
| 文柏贞: "采用高镁石灰石配料改善生料易烧性的探讨", 《新世纪水泥导报》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111499230A (en) * | 2020-04-28 | 2020-08-07 | 安徽盘景水泥有限公司 | Coal gangue solid waste material as raw material admixture |
| CN111533471A (en) * | 2020-05-04 | 2020-08-14 | 常州盘石水泥有限公司 | Cement raw material adopting high magnesium stone |
| CN112390548A (en) * | 2020-11-23 | 2021-02-23 | 山西太钢不锈钢股份有限公司 | High-magnesium limestone calcining method and lime produced by same |
| CN113185154A (en) * | 2021-01-11 | 2021-07-30 | 中国地质科学院矿产综合利用研究所 | Method for preparing cement clinker by using rare earth tailings |
| CN115321850A (en) * | 2022-09-05 | 2022-11-11 | 富源县宏发恒际水泥有限公司 | Raw material, clinker and cement formula and preparation method |
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