CN105084802A - High-limestone-flour-adulterate-amount composite enhanced grinding aid for cement and preparation method of high-limestone flour-adulterate amount composite enhanced grinding aid - Google Patents
High-limestone-flour-adulterate-amount composite enhanced grinding aid for cement and preparation method of high-limestone flour-adulterate amount composite enhanced grinding aid Download PDFInfo
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- CN105084802A CN105084802A CN201510466305.6A CN201510466305A CN105084802A CN 105084802 A CN105084802 A CN 105084802A CN 201510466305 A CN201510466305 A CN 201510466305A CN 105084802 A CN105084802 A CN 105084802A
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Abstract
The invention relates to a high-limestone-flour-adulterate-amount composite enhanced grinding aid for cement and a preparation method of the high-limestone-flour-adulterate-amount composite enhanced grinding aid. The preparation method comprises the following steps that 1, materials including 18%-25% of triethanolamine, 8%-15% of triisopropanolamine, 20%-28% of ethanediol, 8%-12% of molasses, 4%-8% of polycarboxylate superplasticizer, 6%-10% of sodium sulfate, 5%-8% of glacial acetic acid and 2%-24% of water are taken; 2, the water is poured into an agitator kettle, and sodium sulfate is added to be stirred till sodium sulfate is completely dissolved; 3, glacial acetic acid is added to be completely dissolved, triethanolamine, triisopropanolamine, ethanediol, molasses and polycarboxylate superplasticizer are sequentially added after glacial acetic acid is dissolved, stirring continues to be carried out for 20-30 minutes, and the high-limestone flour-adulterate amount composite enhanced grinding aid is obtained. The high-limestone-flour-adulterate-amount composite enhanced grinding aid has the advantages that cement particles are prevented from clustering, and the cement particles are kept in a high homodisperse state; the strength of an interfacial transition zone is increased, and the strength of the cement is further increased; the grinding aiding efficiency of the grinding aid is improved.
Description
Technical field
The invention belongs to building material field, be specifically related to composite enhanced grinding aid of a kind of high limestone powder volume cement and preparation method thereof.
Background technology
China is manufacture of cement big country, and annual cement output is huge, and in manufacture of cement grinding process, when cement granules is ground to certain fineness, can produce agglomeration due to the electrostatic force of Si-O, Ca-O bond rupture generation, causes mill efficiency sharply to decline.A kind of method improving this situation adds grinding aid exactly in grinding process, and the application of grinding aid has Great significance to China's energy-saving and emission-reduction.Nowadays, the research of traditional grinding aid is quite ripe, and on the one hand, the use of grinding aid can improve mill efficiency, reduce energy consumption, on the other hand, passable, improve cement properties, but the grinding aid for high limestone powder volume cement is studied, at present also seldom.
Existing efficient cement liquid grinding aid, when it uses, volume is too high, and is only applicable to conventional cement, can not meet the cement of high limestone powder volume.
Although the grinding aid having many patents of invention to relate at present can improve the early stage and later strength of cement, but but still there are some problems in actual use procedure, some technique is relatively complicated, not easily industrialization, performance is also unstable, some high cost, and too large effect is not had for the cement of high limestone powder volume.
Generally speaking, also do not have at present a kind of be applicable to high limestone powder volume cement, compatible strong, technique simple, the enhanced type grinding aids of excellent performance.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned prior art and provides a kind of enhancement type composite cement grinding aid of high limestone powder volume cement and preparation method thereof that is applicable to, it significantly can reduce cement clinker consumption, optimize cement granules particle diameter, improve cement fine particle content, improve mill efficiency, reduce energy consumption, and in high limestone powder volume situation, improve cement and later strength, there is significant economic and social benefit.
The present invention solves the problems of the technologies described above adopted technical scheme: a kind of composite enhanced grinding aid of high limestone powder volume cement, include following component and content thereof: trolamine is 18% ~ 25%, tri-isopropanolamine is 8% ~ 15%, ethylene glycol is 20% ~ 28%, molasses are 8% ~ 12%, and polycarboxylate water-reducer is 4% ~ 8%, and sodium sulfate is 6% ~ 10%, Glacial acetic acid is 5% ~ 8%, and water is 2% ~ 24%.
By such scheme, its molecular structural formula of described polycarboxylate water-reducer is:
Wherein: m/n=4; P=1 ~ 2; K=2 ~ 5;
The preparation method of the composite enhanced grinding aid of described high limestone powder volume cement, includes following steps:
1) according to following component and content thereof: trolamine is 18% ~ 25%, tri-isopropanolamine is 8% ~ 15%, ethylene glycol is 20% ~ 28%, molasses are 8% ~ 12%, polycarboxylate water-reducer is 4% ~ 8%, and sodium sulfate is 6% ~ 10%, and Glacial acetic acid is 5% ~ 8%, water is 2% ~ 24%, feeding;
2) pour water into agitator kettle, add sodium sulfate and be stirred to sodium sulfate and dissolve completely;
3) adding Glacial acetic acid to dissolving completely, adding trolamine successively after dissolving, tri-isopropanolamine, ethylene glycol, molasses and polycarboxylate water-reducer, continue stirring 20 ~ 30 minutes, to obtain final product.
During use, by composite enhanced grinding aid of the present invention by adding in grinding machine according to 0.03% ~ 0.05% of cement weight, be evenly sprayed at cement clinker surface by vapour deposition mode.
The invention has the advantages that: (1) can improve the charge balance of cement particle surface, promote mutually to repel between cement granules, overcome magnetism, prevent cement granules from assembling, make it keep high uniformity dispersion state, improve grinding-aid effect.Simultaneously trolamine and can improve cement early strength adding of sodium sulfate, adding of tri-isopropanolamine can improve cement later strength, meets cement mill to the requirement improving strength of cement.(2) polycarboxylate water-reducer is introduced, the dispersiveness of further raising cement, water reducer can wrap up limestone powder particle, talc particles is evenly spread in cement voids in cement hydration process, play filling effect, improve interfacial transition zone intensity, thus given play to the latent effect of stone flour, improve strength of cement further; (3) adopt vapour deposition mode grinding aid to be evenly spread to cement clinker surface and carry out premix, make that grinding aid and cement clinker are full and uniform to be contacted, improve its grinding aid efficiency; (4) compared with traditional grinding aid, needed for the cement of identical weight, the volume of grinding aid significantly reduces, and has saved cost.
Embodiment
Below in conjunction with specific examples, the present invention will be further described.
Polycarboxylate water-reducer of the present invention is the BT type water reducer that Wuhan Huaxuan High-tech Co., Ltd. produces, and for solid content is the milky white liquid of 40wt.%, its molecular structural formula is:
Wherein: m/n=4; P=1 ~ 2; K=2 ~ 5:
Embodiment 1
A kind of composite enhanced grinding aid being applicable to high limestone powder volume cement, take each raw material: trolamine is 18%, tri-isopropanolamine is 12%, ethylene glycol is 28%, molasses are 8%, polycarboxylate water-reducer is 6%, sodium sulfate is 8%, Glacial acetic acid is 5%, water is 15%, pour water into agitator kettle, add sodium sulfate to be stirred to sodium sulfate and to dissolve completely, add Glacial acetic acid to dissolving completely, trolamine is added successively after dissolving, tri-isopropanolamine, ethylene glycol, molasses and polycarboxylate water-reducer, continue stirring 20 ~ 30 minutes, obtain, load in vapor phase growing apparatus according to 0.03% of cement weight afterwards, in mechanical milling process, be distributed to cement clinker surface.
The each proportioning raw materials of cement used in example rises the PC32.5R cement in imperial cement mill to bestow favour, wherein: gained cement clinker 58%, gypsum 1%, burns shale 21%, Wingdale 20%.In embodiment, milling equipment used is ball mill, and grinding time fixes 20min.
Cement obtained by the present invention is carried out to the mensuration of property indices, the results are shown in Table 1.
Embodiment 2
A kind of composite enhanced grinding aid being applicable to high limestone powder volume cement, take each raw material: trolamine is 20%, tri-isopropanolamine is 10%, ethylene glycol is 25%, molasses are 10%, polycarboxylate water-reducer is 5%, sodium sulfate is 6%, Glacial acetic acid is 8%, water is 16%, pour water into agitator kettle, add sodium sulfate to be stirred to sodium sulfate and to dissolve completely, add Glacial acetic acid to dissolving completely, trolamine is added successively after dissolving, tri-isopropanolamine, ethylene glycol, molasses and polycarboxylate water-reducer, continue stirring 20 ~ 30 minutes, obtain, load in vapor phase growing apparatus according to 0.03% of cement weight afterwards, in mechanical milling process, be distributed to cement clinker surface.
The each proportioning raw materials of cement used in example rises the PC32.5R cement in imperial cement mill to bestow favour, wherein: gained cement clinker 58%, gypsum 1%, burns shale 21%, Wingdale 20%.In embodiment, milling equipment used is ball mill, and grinding time fixes 20min.
Cement obtained by the present invention is carried out to the mensuration of property indices, the results are shown in Table 1.
Embodiment 3
A kind of composite enhanced grinding aid being applicable to high limestone powder volume cement, take each raw material: trolamine is 24%, tri-isopropanolamine is 13%, ethylene glycol is 20%, molasses are 9%, polycarboxylate water-reducer is 4%, sodium sulfate is 6%, Glacial acetic acid is 6%, water is 18%, pour water into agitator kettle, add sodium sulfate to be stirred to sodium sulfate and to dissolve completely, add Glacial acetic acid to dissolving completely, trolamine is added successively after dissolving, tri-isopropanolamine, ethylene glycol, molasses and polycarboxylate water-reducer, continue stirring 20 ~ 30 minutes, obtain, load in vapor phase growing apparatus according to 0.03% of cement weight afterwards, in mechanical milling process, be distributed to cement clinker surface.
The each proportioning raw materials of cement used in example rises the PC32.5R cement in imperial cement mill to bestow favour, wherein: gained cement clinker 58%, gypsum 1%, burns shale 21%, Wingdale 20%.In embodiment, milling equipment used is ball mill, and grinding time fixes 20min.
Cement obtained by the present invention is carried out to the mensuration of property indices, the results are shown in Table 1.
Table 1 cement property indices
Claims (4)
1. the composite enhanced grinding aid of one kind high limestone powder volume cement, include following component and content thereof: trolamine is 18% ~ 25%, tri-isopropanolamine is 8% ~ 15%, ethylene glycol is 20% ~ 28%, molasses are 8% ~ 12%, and polycarboxylate water-reducer is 4% ~ 8%, and sodium sulfate is 6% ~ 10%, Glacial acetic acid is 5% ~ 8%, and water is 2% ~ 24%.
2. the composite enhanced grinding aid of high limestone powder volume cement according to claim 1, is characterized in that: its molecular structural formula of described polycarboxylate water-reducer is:
Wherein: m/n=4; P=1 ~ 2; K=2 ~ 5.
3. the preparation method of the composite enhanced grinding aid of high limestone powder volume cement according to claim 1, includes following steps:
1) according to following component and content thereof: trolamine is 18% ~ 25%, tri-isopropanolamine is 8% ~ 15%, ethylene glycol is 20% ~ 28%, molasses are 8% ~ 12%, polycarboxylate water-reducer is 4% ~ 8%, and sodium sulfate is 6% ~ 10%, and Glacial acetic acid is 5% ~ 8%, water is 2% ~ 24%, feeding;
2) pour water into agitator kettle, add sodium sulfate and be stirred to sodium sulfate and dissolve completely;
3) adding Glacial acetic acid to dissolving completely, adding trolamine successively after dissolving, tri-isopropanolamine, ethylene glycol, molasses and polycarboxylate water-reducer, continue stirring 20 ~ 30 minutes, to obtain final product.
4. the preparation method of the composite enhanced grinding aid of high limestone powder volume cement according to claim 3, is characterized in that: its molecular structural formula of described polycarboxylate water-reducer is:
Wherein: m/n=4; P=1 ~ 2; K=2 ~ 5.
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| CN105439491A (en) * | 2015-12-25 | 2016-03-30 | 湖南中岩建材科技有限公司 | Cement grinding aid and preparation method thereof |
| CN105669054A (en) * | 2016-01-28 | 2016-06-15 | 桂林华越环保科技有限公司 | Special composite liquid grinding aid for blast furnace slag and preparation method of special composite liquid grinding aid |
| CN105693132A (en) * | 2016-01-28 | 2016-06-22 | 桂林华越环保科技有限公司 | Preparation method of special grinding aid for silver grey rock powder |
| CN108358481A (en) * | 2018-03-06 | 2018-08-03 | 济南大学 | A kind of weathering fine sand batholith cement and preparation method thereof |
| CN110171939A (en) * | 2019-04-11 | 2019-08-27 | 武汉理工大学 | A kind of sial phase chaotropic agent and its preparation method and application |
| CN110770189A (en) * | 2017-04-25 | 2020-02-07 | Gcp应用技术有限公司 | Cement strength enhancer |
| CN113831051A (en) * | 2021-09-09 | 2021-12-24 | 湖南中岩建材科技有限公司 | Mineral powder grinding aid and preparation method and application thereof |
| CN115181544A (en) * | 2022-07-01 | 2022-10-14 | 惠州市鑫业建材有限公司 | Grinding additive of blocky lime and lime grinding method |
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Cited By (12)
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|---|---|---|---|---|
| CN105439491A (en) * | 2015-12-25 | 2016-03-30 | 湖南中岩建材科技有限公司 | Cement grinding aid and preparation method thereof |
| CN105669054A (en) * | 2016-01-28 | 2016-06-15 | 桂林华越环保科技有限公司 | Special composite liquid grinding aid for blast furnace slag and preparation method of special composite liquid grinding aid |
| CN105693132A (en) * | 2016-01-28 | 2016-06-22 | 桂林华越环保科技有限公司 | Preparation method of special grinding aid for silver grey rock powder |
| CN110770189A (en) * | 2017-04-25 | 2020-02-07 | Gcp应用技术有限公司 | Cement strength enhancer |
| CN110770189B (en) * | 2017-04-25 | 2023-07-14 | Gcp应用技术有限公司 | Cement strength enhancer |
| CN108358481A (en) * | 2018-03-06 | 2018-08-03 | 济南大学 | A kind of weathering fine sand batholith cement and preparation method thereof |
| CN108358481B (en) * | 2018-03-06 | 2020-12-29 | 济南大学 | Weathered fine sand rock-based cement and preparation method thereof |
| CN110171939A (en) * | 2019-04-11 | 2019-08-27 | 武汉理工大学 | A kind of sial phase chaotropic agent and its preparation method and application |
| CN110171939B (en) * | 2019-04-11 | 2021-09-21 | 武汉理工大学 | Silicon-aluminum phase promoter and preparation method and application thereof |
| CN113831051A (en) * | 2021-09-09 | 2021-12-24 | 湖南中岩建材科技有限公司 | Mineral powder grinding aid and preparation method and application thereof |
| CN113831051B (en) * | 2021-09-09 | 2022-07-08 | 湖南中岩建材科技有限公司 | Mineral powder grinding aid and preparation method and application thereof |
| CN115181544A (en) * | 2022-07-01 | 2022-10-14 | 惠州市鑫业建材有限公司 | Grinding additive of blocky lime and lime grinding method |
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