CN104446052A - Method for producing cement from 28-day strength clinkers - Google Patents
Method for producing cement from 28-day strength clinkers Download PDFInfo
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- CN104446052A CN104446052A CN201410684080.7A CN201410684080A CN104446052A CN 104446052 A CN104446052 A CN 104446052A CN 201410684080 A CN201410684080 A CN 201410684080A CN 104446052 A CN104446052 A CN 104446052A
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- Prior art keywords
- grog
- parts
- cement
- days intensity
- clinkers
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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
Abstract
The invention discloses a method for producing cement from 28-day strength clinkers. The method comprises the following steps: adjusting the temperature and humidity of a clinker processing site by ventilation equipment, temperature adjusting equipment and humidity adjusting equipment; adjusting a processing process of industrial wastes, adding the operations of cleaning, air drying and classifying, and heating at a uniform speed during calcining; adjusting raw material coal for producing the 28-day strength clinkers; in parts by weight, mixing 8.6 parts of granulated blast-furnace slag, 6.0 parts of gypsum and 85 parts of the 28-day strength clinkers produced in the previous step to produce the cement. According to the method, the defects of poor cooling effect, unreasonable proportion, low calcination temperature and the like in the prior art can be overcome; the method has the advantages of good cooling effect, reasonable proportion and high calcination temperature.
Description
Technical field
The present invention relates to cement processing technique field, particularly, relate to a kind of method utilizing 28 days intensity grog production cement.
Background technology
My subsidiary factory's 1# production line carries the work that whole group company special cement grog is produced, and grog is the main ingredient of cement, and the cement for grinding high-quality must have the grog of high-quality, therefore first should improve the quality of grog.In clinker quality, the 28d intensity of grog is one of very important index, the raising of grog 28d intensity contributes to us in manufacture of cement, adds more blended material, reduce the cost of cement, therefore determine to take " improving grog 28d intensity " as our brainstorm project.
Cement Industrial Process flow process, see Fig. 1.Grog 28d low strength, can only reach about 56-57Mpa.On-site investigation, see 1-12 month subsidiary factory grog in 2012 28 days intensity statistics tables:
From statistical conditions, within 2012, annual grog 28d average intensity is 56.58Mpa.
Grate-cooler cooling performance is poor: grate-cooler design cooling output is 2000t/d, but our kiln production is 2350-2500t/d, and the cooling performance of grate-cooler to grog does not reach optimum regime, sometimes also there will be " Red River " phenomenon, has a strong impact on clinker strength.
Rainy day causes slip moisture content large: the number of times that rains in a year is few, slip natively moisture about 20%, and the moisture content impact that brings of raining is little.
Temperature controls too low: in normal productive process, operation has strict standard to temperature requirement, there will not be the phenomenon that control temperature is too low.
Coal injection pipe position is improper, flame instability, calcines bad: coal injection pipe position be through producer and company technique personnel produce according to us in service condition carry out arranging, stablize at daily production Flame, and have certain rigidity, calcining effect is fine.
Instrument fault: each equipment of kiln system, each instrument monitoring point has special messenger to be responsible for, and make regular check on, and instrument breaks down, and operator can the electric personnel's process of contact in time.
Ature of coal is poor: ature of coal is poor, and raw coal grindability is poor, yields poorly, and for ensureing that kiln is normally produced, relaxes fineness and moisture content; Coal powder fraction is high simultaneously, and volatile matter is low, and thermal value is low, and bad to raw material calcining, clinker strength is seriously influenced.
Burning trade waste affects: industrial waste species is many, and composition is indefinite, and without preheating, directly enter in kiln from kiln tail and calcine, calcination time is insufficient, is mixed in grog, has a strong impact on clinker strength.
Composition of raw material fluctuation is large: produce Wingdale used, sand shale Dou Shi company oneself mining, be all in same mining area, composition is all more stable.
Learnt by analytic demonstration, the major cause causing clinker strength low has three: (1) grate-cooler cooling performance is poor; (2) ature of coal is poor; (3) burn trade waste.
Realizing in process of the present invention, contriver finds at least to exist in prior art the defect such as the unreasonable and calcining temperature of cooling performance difference, proportioning is low.
Summary of the invention
The object of the invention is to, for the problems referred to above, propose a kind of method utilizing 28 days intensity grog production cement, to realize the high advantage of good cooling results, reasonable ratio and calcining temperature.
For achieving the above object, the technical solution used in the present invention is: a kind of method utilizing 28 days intensity grog production cement, comprising:
A, employing ventilation installation, temperature equipment and damping equipment, the humiture in adjustment grog processing place;
The treating processes of b, adjustment trade waste, increases the operation of cleaning, air-dry and classification, adopts the mode that at the uniform velocity heats up during calcining;
C, adjustment coal raw material, produce 28 days intensity grogs;
D, utilize above-mentioned steps to produce gained 28 days intensity grogs, by GBFS, gypsum and grog by following parts by weight proportioning, produce cement:
GBFS: 8.6 parts;
Gypsum: 6.0 parts;
Grog: 85 parts.
Further, described step a, specifically comprises:
At grate-cooler afterbody, water spraying atomization device is installed, grog is cooled;
Periodic cleaning grate-cooler throttling valve, makes it ventilate smooth and easy.
Further, described step b, specifically comprises:
Pre-treatment is carried out to trade waste, then calcines;
Control waste calcinating speed, do not occur large fluctuation, make it be heated evenly, calcine just more abundant.
The method utilizing 28 days intensity grog production cement of various embodiments of the present invention, owing to comprising: adopt ventilation installation, temperature equipment and damping equipment, the humiture in adjustment grog processing place; The treating processes of adjustment trade waste, increases the operation of cleaning, air-dry and classification, adopts the mode that at the uniform velocity heats up during calcining; Adjustment coal raw material, produces 28 days intensity grogs; Utilize above-mentioned steps to produce gained 28 days intensity grogs, by GBFS, gypsum and grog by following parts by weight proportioning, produce cement: GBFS: 8.6 parts; Gypsum: 6.0 parts; Grog: 85 parts; Thus the defect that in prior art, cooling performance is poor, proportioning is unreasonable and calcining temperature is low can be overcome, to realize the high advantage of good cooling results, reasonable ratio and calcining temperature.
Other features and advantages of the present invention will be set forth in the following description, and, partly become apparent from specification sheets, or understand by implementing the present invention.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification sheets, together with embodiments of the present invention for explaining the present invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is Cement Industrial Process schema.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.
According to the embodiment of the present invention, provide a kind of method utilizing 28 days intensity grog production cement, comprising:
A, employing ventilation installation, temperature equipment and damping equipment, the humiture in adjustment grog processing place; Step a, specifically comprises:
At grate-cooler afterbody, water spraying atomization device is installed, grog is cooled;
Periodic cleaning grate-cooler throttling valve, makes it ventilate smooth and easy;
The treating processes of b, adjustment trade waste, increases the operation of cleaning, air-dry and classification, adopts the mode that at the uniform velocity heats up during calcining; Step b, specifically comprises:
Pre-treatment is carried out to trade waste, then calcines;
Control waste calcinating speed, do not occur large fluctuation, make it be heated evenly, calcine just more abundant;
C, adjustment coal raw material, produce 28 days intensity grogs;
D, utilize above-mentioned steps to produce gained 28 days intensity grogs, by GBFS, gypsum and grog by following parts by weight proportioning, produce cement:
GBFS: 8.6 parts;
Gypsum: 6.0 parts;
Grog: 85 parts.
the target value of technical solution of the present invention:improve grog 28 days intensity, grog 28d intensity reaches 60Mpa, improves clinker strength, and produce cement suitably can add blended material more, cost-saving.
Intensity is close to our target value some in month before development of the activity, wherein there is some months clinker strength to reach more than 60Mpa number of days and reach more than 10 days, the grog 28d intensity average 58.72 in such as April, there is 12 days intensity at more than 60Mpa, fish peak technician does not lack, through everybody effort, can realize target.Stablize kiln system operation, hold raw-material enter factory close, kiln system production unit is safeguarded, minimizing stop the kiln time.
the develop countermeasures of technical solution of the present invention:for above three principal elements, formulate following countermeasures:
the implementation process of technical solution of the present invention:
implement one: the problem solving grate-cooler cooling performance difference.
Water spraying atomization device is installed at grate-cooler afterbody by establishment officer, cools grog;
Periodic cleaning grate-cooler throttling valve, makes it ventilate smooth and easy;
In operation, attentional manipulation grate-cooler grog bed thickness, makes grog reach the best state of cooling;
Test effect: clinker cooling successful takes a turn for the better, and going out grate-cooler grog can directly with hand-held.
implement two: the problem solving ature of coal difference.
The coal of purchase of goods and materials department of associated company buying quality better;
Contact quality portion adjusts collocation coal kind in time;
Supervise the quality that quality portion ensures into factory's raw coal.
Test effect: the grindability of raw coal is greatly improved, ensure that fineness and the moisture content of coal dust, and thermal value have also been obtained very large raising simultaneously, ensure that the fully calcined of supplied materials, does not occur half-cooked material phenomenon in grog.
implement three: solve and burn trade waste problem.
Contact relevant unit carries out relevant training to the staff burning trade waste, allows them understand the ABC of clinker burning;
Contact relevant departments carry out pre-treatment to trade waste, then calcine;
Control waste calcinating speed, do not occur large fluctuation, make it be heated evenly, calcine just more abundant;
Test effect: go out in grate-cooler grog not have to occur that also do not have the postindustrial waste of the calcining of Individual existence, the chemical composition in waste defines clinker mineral also at the trade waste of burning.
the effect inspection of technical solution of the present invention:
(1) QC by a year is movable, and within 2013, annual grog 28d average strength reaches 60.44 Mpa, achieves predetermined target value, sees the following form:
1-12 month subsidiary factory grog 28d intensity statistics table in 2013
(2) economical effectiveness
1, tangible benefit:
The breeze of about 1% can be added when experimentally learning that grog 28d intensity often improves 1Mpa production cement more.
2, intangible benefit: the process management enhancing a subsidiary factory, reduces energy consumption.
the reinforcing measures of technical solution of the present invention:
Consolidation effect: within 2014,1-2 month grog 28d intensity is all within our target zone; 1-2 month subsidiary factory grog 28d intensity statistics table in 2014:
Within 2014,1-2 month grog 28d intensity is respectively 60.80Mpa, 61.40Mpa, and test effect is stablized.
Last it is noted that the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. utilize a method for 28 days intensity grog production cement, it is characterized in that, comprising:
A, employing ventilation installation, temperature equipment and damping equipment, the humiture in adjustment grog processing place;
The treating processes of b, adjustment trade waste, increases the operation of cleaning, air-dry and classification, adopts the mode that at the uniform velocity heats up during calcining;
C, adjustment coal raw material, produce 28 days intensity grogs;
D, utilize above-mentioned steps to produce gained 28 days intensity grogs, by GBFS, gypsum and grog by following parts by weight proportioning, produce cement:
GBFS: 8.6 parts;
Gypsum: 6.0 parts;
Grog: 85 parts.
2. the method utilizing 28 days intensity grog production cement according to claim 1, it is characterized in that, described step a, specifically comprises:
At grate-cooler afterbody, water spraying atomization device is installed, grog is cooled;
Periodic cleaning grate-cooler throttling valve, makes it ventilate smooth and easy.
3. the method utilizing 28 days intensity grog production cement according to claim 1 and 2, it is characterized in that, described step b, specifically comprises:
Pre-treatment is carried out to trade waste, then calcines;
Control waste calcinating speed, do not occur large fluctuation, make it be heated evenly, calcine just more abundant.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410684080.7A CN104446052A (en) | 2014-11-25 | 2014-11-25 | Method for producing cement from 28-day strength clinkers |
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| CN201410684080.7A CN104446052A (en) | 2014-11-25 | 2014-11-25 | Method for producing cement from 28-day strength clinkers |
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| CN104446052A true CN104446052A (en) | 2015-03-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106904852A (en) * | 2017-03-20 | 2017-06-30 | 重庆市新嘉南建材有限责任公司 | The method and apparatus that a kind of utilization clinker produces cement |
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| CN1587158A (en) * | 2004-08-03 | 2005-03-02 | 中国地质大学（武汉） | Method for preparing cement clinker with oil field oil-containing calcium sludge |
| CN103864321A (en) * | 2014-03-19 | 2014-06-18 | 广西鱼峰集团有限公司 | Portland cement for roads and production method thereof |
| CN103934254A (en) * | 2014-03-24 | 2014-07-23 | 北京凯盛建材工程有限公司 | System and method utilizing cement klin to co-process city household garbage |
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2014
- 2014-11-25 CN CN201410684080.7A patent/CN104446052A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1587158A (en) * | 2004-08-03 | 2005-03-02 | 中国地质大学（武汉） | Method for preparing cement clinker with oil field oil-containing calcium sludge |
| CN103864321A (en) * | 2014-03-19 | 2014-06-18 | 广西鱼峰集团有限公司 | Portland cement for roads and production method thereof |
| CN103934254A (en) * | 2014-03-24 | 2014-07-23 | 北京凯盛建材工程有限公司 | System and method utilizing cement klin to co-process city household garbage |
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| 郝利炜: "水泥窑协同处置固废对水泥产品质量的影响", 《环境工程》, 30 August 2015 (2015-08-30), pages 554 - 556 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106904852A (en) * | 2017-03-20 | 2017-06-30 | 重庆市新嘉南建材有限责任公司 | The method and apparatus that a kind of utilization clinker produces cement |
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Application publication date: 20150325 |