CN104724956A - Production method of low-alkaline moderately-resistant sulfate silicate clinker - Google Patents
Production method of low-alkaline moderately-resistant sulfate silicate clinker Download PDFInfo
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- CN104724956A CN104724956A CN201310711984.XA CN201310711984A CN104724956A CN 104724956 A CN104724956 A CN 104724956A CN 201310711984 A CN201310711984 A CN 201310711984A CN 104724956 A CN104724956 A CN 104724956A
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- moderately
- resistant
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- alkaline
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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
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Abstract
The invention discloses a production method of a low-alkaline moderately-resistant sulfate silicate clinker. The production method comprises following steps: 1) a raw material is prepared, wherein, by weight, 70 to 75% of limestone, 8 to 12% of silica, 5 to 10% of shale, and 8 to 10% of steel slag are mixed; 2) the mixed raw material is delivered into a raw mix bin, and is delivered into a kiln for calcining; 3) after calcining, a moderately-resistant low-alkaline silicate clinker is obtained, and dihydrate gypsum is added for mixing, wherein the amount of dihydrate gypsum accounts for 5 to 7% of the total weight of the moderately-resistant low-alkaline silicate clinker; and 4) cement grinding is carried out for 15 to 25min so as to prepare moderately-resistant portland cement. According to the production method, limestone, silica, shale, and steel slag are taken as raw materials to prepare the low-alkaline moderately-resistant sulfate silicate clinker; required 3CaO.SiO2 and 3CaO.AlO3 are obtained, and R2O<=0.6%; the obtained moderately-resistant portland cement is capable of satisfying requirements of nuclear power plants or mass concrete projects; shale is a mining waste, steel slag is a waste comes from steel plants, and shale and steel slag are used for preparing the low-alkaline moderately-resistant sulfate silicate clinker, so that environmental pollution is reduced, and environment treatment is realized.
Description
Technical field
The present invention relates to a kind of production method of cement, specifically the production method of anti-sulphate and silicate grog.
Background technology
GB748-2005 standard-required, in production in anti-silicate cement leading indicator, 3CaOSiO2≤55%, 3CaOAlO3 content≤5.0%, middle sulphate-resistant cement 14 days linear expansivities are not more than 0.06%, and it is R2O≤0.6% that low alkali requires, other performance requriements is identical with Portland cement.In anti-portland cement clinker to be also consistent above-mentioned requirements.In existing production technique, with Wingdale, clay and Pyrite in The Proportioning, be difficult to reach These parameters requirement, use Wingdale, clay, Pyrite in The Proportioning, even if make 3CaOSiO2,3CaOAlO3, but R2O can be greater than 0.6%, and traditional proportioning method can not produce anti-portland cement clinker in low alkali.When 2, providing anti-silicate cement in low alkali for important engineerings such as Nuclear power plants, there is no this grog, just can not produce this kind of product.
Summary of the invention
The object of the invention is the deficiency existed for prior art, provide one to make R
2o≤0.6% and production method of anti-sulphate and silicate grog in the low alkali of the needs of Nuclear power plants or mass concrete engineering can be met.
For achieving the above object, the technical solution used in the present invention is anti-sulphate and silicate grog production method in a kind of low alkali, comprises the steps:
1) raw meal proportioning: by weight percentage: Wingdale 70 ~ 75%, silica 8 ~ 12%, shale 5 ~ 10%, slag 8 ~ 10%, mix above-mentioned batching;
2) kiln calcining is entered after the batching mixed being put into raw material silo;
3) calcine anti-low alkali silicate grog in rear generation, then add the 5%--7% dihydrate gypsum mixing accounting for grog gross weight;
4) finally carry out cement abrasive dust, the time is 15 ~ 25min, anti-silicate cement in making.
Described raw meal proportioning, optimum proportioning is by weight percentage: Wingdale 73%, silica 10%, shale 6%, slag 11%.
Described step 2) in calcination time be 20min, progressively heat up, temperature is up to 1450 DEG C.
Raw meal proportioning joins matter chemistry Composition Control scope
Beneficial effect: the present invention uses Wingdale, silica, shale, slag as feed proportioning, make production grog, not only met 3CaOSiO2,3CaOAlO3 that standard specifies, but also made R2O≤0.6%, the cement that the method is produced can meet the needs of Nuclear power plants or mass concrete engineering; In the present invention, shale is mining wastes, and slag is the waste of steelworks, is that this kind of matter utilization produces this kind of grog, reduces environmental pollution, carries out environmental improvement.
Accompanying drawing explanation
Fig. 1 is present invention process schema.
Embodiment
Below in conjunction with the drawings and specific embodiments, illustrate the present invention further, the present embodiment is implemented under premised on technical solution of the present invention, should understand these embodiments and only be not used in for illustration of the present invention and limit the scope of the invention.
Embodiment one:
1) raw meal proportioning: by weight percentage: Wingdale 70%, silica 12%, shale 10%, slag 8%, mix above-mentioned batching;
2) kiln calcining is entered after the batching mixed being put into raw material silo; Calcination time is 20min, progressively heats up, and temperature is up to 1450 DEG C;
3) calcine anti-low alkali silicate grog in rear generation, then add the 5% dihydrate gypsum mixing accounting for grog gross weight;
4) finally carry out cement abrasive dust, the time is 15min, anti-silicate cement in making.
Embodiment two:
1) raw meal proportioning: by weight percentage: Wingdale 75%, silica 8%, shale 7%, slag 10%, mix above-mentioned batching;
2) kiln calcining is entered after the batching mixed being put into raw material silo; Calcination time is 20min, progressively heats up, and temperature is up to 1450 DEG C;
3) calcine anti-low alkali silicate grog in rear generation, then add the 7% dihydrate gypsum mixing accounting for grog gross weight;
4) finally carry out cement abrasive dust, the time is 25min, anti-silicate cement in making.
Embodiment three:
1) raw meal proportioning: by weight percentage: Wingdale 75%, silica 10%, shale 5%, slag 10%, mix above-mentioned batching;
2) kiln calcining is entered after the batching mixed being put into raw material silo; Calcination time is 20min, progressively heats up, and temperature is up to 1450 DEG C;
3) calcine anti-low alkali silicate grog in rear generation, then add the 6% dihydrate gypsum mixing accounting for grog gross weight;
4) finally carry out cement abrasive dust, the time is 20min, anti-silicate cement in making.
Embodiment four:
1) raw meal proportioning: by weight percentage: Wingdale 73%, silica 10%, shale 6%, slag 11%, mix above-mentioned batching;
2) kiln calcining is entered after the batching mixed being put into raw material silo; Calcination time is 15min, progressively heats up, and temperature is up to 1450 DEG C;
3) calcine anti-low alkali silicate grog in rear generation, then add the 7% dihydrate gypsum mixing accounting for grog gross weight;
4) finally carry out cement abrasive dust, the time is 20min, anti-silicate cement in making.
Claims (3)
1. an anti-sulphate and silicate grog production method in low alkali, is characterized in that comprising the steps:
1) raw meal proportioning: by weight percentage: Wingdale 70 ~ 75%, silica 8 ~ 12%, shale 5 ~ 10%, slag 8 ~ 10%, mix above-mentioned batching;
2) kiln calcining is entered after the batching mixed being put into raw material silo;
3) calcine anti-low alkali silicate grog in rear generation, then add the 5%--7% dihydrate gypsum mixing accounting for grog gross weight;
4) finally carry out cement abrasive dust, the time is 15 ~ 25min, anti-silicate cement in making.
2. anti-sulphate and silicate grog production method in a kind of low alkali according to claim 1, is characterized in that: described raw meal proportioning, by weight percentage: Wingdale 73%, silica 10%, shale 6%, slag 11%.
3. anti-sulphate and silicate grog production method in a kind of low alkali according to claim 1, is characterized in that: described step 2) in calcination time be 20min, progressively heat up, temperature is up to 1450 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310711984.XA CN104724956A (en) | 2013-12-20 | 2013-12-20 | Production method of low-alkaline moderately-resistant sulfate silicate clinker |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310711984.XA CN104724956A (en) | 2013-12-20 | 2013-12-20 | Production method of low-alkaline moderately-resistant sulfate silicate clinker |
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| CN104724956A true CN104724956A (en) | 2015-06-24 |
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| CN201310711984.XA Pending CN104724956A (en) | 2013-12-20 | 2013-12-20 | Production method of low-alkaline moderately-resistant sulfate silicate clinker |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105439481A (en) * | 2015-11-16 | 2016-03-30 | 中国建筑材料科学研究总院 | Method for increasing content of periclase in high-magnesium moderate-heat cement clinker |
| CN110078392A (en) * | 2019-05-23 | 2019-08-02 | 广西科技大学 | Utilize the method for discarded sintering shale brick powder production ecotype cement |
| CN110803875A (en) * | 2019-09-19 | 2020-02-18 | 喀什天山水泥有限责任公司 | PII42.5 cement applied to airport special requirements |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1333195A (en) * | 2000-07-11 | 2002-01-30 | 内蒙古蒙西高新材料股份有限公司 | Method for producing low-alkali cement |
| CN101318782A (en) * | 2008-07-04 | 2008-12-10 | 花垣县四成建材有限责任公司 | Method for preparing concrete and process thereof |
| JP4453098B2 (en) * | 2000-09-12 | 2010-04-21 | 株式会社デイ・シイ | Low heat generation cement consisting of high phosphorus content clinker and blast furnace slag fine powder |
| CN102730992A (en) * | 2012-06-29 | 2012-10-17 | 酒钢(集团)宏达建材有限责任公司 | Method for producing low-alkali Portland cement by using industrial solid waste |
| CN102730991A (en) * | 2012-06-29 | 2012-10-17 | 酒钢(集团)宏达建材有限责任公司 | Method for producing sulfate resistant cement by using converter steel slag |
-
2013
- 2013-12-20 CN CN201310711984.XA patent/CN104724956A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1333195A (en) * | 2000-07-11 | 2002-01-30 | 内蒙古蒙西高新材料股份有限公司 | Method for producing low-alkali cement |
| JP4453098B2 (en) * | 2000-09-12 | 2010-04-21 | 株式会社デイ・シイ | Low heat generation cement consisting of high phosphorus content clinker and blast furnace slag fine powder |
| CN101318782A (en) * | 2008-07-04 | 2008-12-10 | 花垣县四成建材有限责任公司 | Method for preparing concrete and process thereof |
| CN102730992A (en) * | 2012-06-29 | 2012-10-17 | 酒钢(集团)宏达建材有限责任公司 | Method for producing low-alkali Portland cement by using industrial solid waste |
| CN102730991A (en) * | 2012-06-29 | 2012-10-17 | 酒钢(集团)宏达建材有限责任公司 | Method for producing sulfate resistant cement by using converter steel slag |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105439481A (en) * | 2015-11-16 | 2016-03-30 | 中国建筑材料科学研究总院 | Method for increasing content of periclase in high-magnesium moderate-heat cement clinker |
| CN110078392A (en) * | 2019-05-23 | 2019-08-02 | 广西科技大学 | Utilize the method for discarded sintering shale brick powder production ecotype cement |
| CN110078392B (en) * | 2019-05-23 | 2021-10-22 | 广西科技大学 | Method for producing ecological cement by using waste sintered shale brick powder |
| CN110803875A (en) * | 2019-09-19 | 2020-02-18 | 喀什天山水泥有限责任公司 | PII42.5 cement applied to airport special requirements |
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Application publication date: 20150624 |