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Powder composite cement grinding additive and preparation method thereof

A technology of composite cement and grinding aid, which is applied in cement production, solid waste management, sustainable waste treatment, etc., can solve the problems of harmful chloride ions, low cost, and high cost, and achieves increased dosage, increased strength, and improved utilization. amount of effect

Inactive Publication Date: 2013-01-30
兰州宏方新型建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Liquid grinding aids are characterized by convenient storage, transportation and addition, but the disadvantage is that the cost is relatively high
Powder grinding aids are characterized by low cost, but large dosage, and most of them contain chloride ions that endanger the quality of cement

Method used

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  • Powder composite cement grinding additive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1 A kind of powder composite cement grinding aid, this grinding aid is made up of the raw material of following mass percent: triethanolamine 4%, sodium tripolyphosphate 10%, nitrate 11%, sodium sulfate 10%, sulfuric acid Calcium 10%, fly ash 55%.

[0020] The preparation method of this grinding aid comprises the following steps:

[0021] (1) Weigh each raw material by proportioning;

[0022] (2) Grinding nitrate, calcium sulfate and fly ash respectively, and passing through a 400×400 mesh sieve to obtain nitrate powder, calcium sulfate powder and fly ash;

[0023] (3) Put nitrate powder and calcium sulfate powder into an airtight mixer for stirring. After mixing evenly, first add sodium tripolyphosphate, sodium sulfate and fly ash powder for stirring until uniform, then add triethanolamine for further mixing. Stir and mix well.

Embodiment 2

[0024] Embodiment 2 A kind of powder composite cement grinding aid, this grinding aid is made up of the raw material of following mass percentage: triethanolamine 5%, sodium tripolyphosphate 6%, nitrate 10%, sodium phosphate 14%, sulfuric acid Calcium 5%, fly ash 60%.

[0025] The preparation method of this grinding aid is with embodiment 1.

Embodiment 3

[0026] Example 3 A powder composite cement grinding aid, the grinding aid is composed of the following raw materials in mass percentages: 10% triethanolamine, 6% sodium tripolyphosphate, 10% salt, 15% sodium sulfate, sulfuric acid Calcium 12%, fly ash 47%.

[0027] The preparation method of this grinding aid is with embodiment 1.

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Abstract

The invention relates to a powder composite cement grinding additive comprising the following raw materials in percentage by weight: 4-10 percent of trolamine, 6-10 percent of trimeric sodium phosphate, 10-15 percent of mirabilite, 10-15 percent of anhydrous sodium sulphate, 5-15 percent of calcium sulphate and 35-65 percent of pulverized fuel ash. By adopting the invention, the addition amount of the grinding additive in the production of each ton of cement can be effectively reduced, the addition amount of mixed material and the utilization amount of the pulverized fuel ash can be effectively improved and the effects for saving energy and reducing consumption can be achieved, thereby the cement strength can be effectively improved, wherein the strength after three days can be improved by 2-3MPa and the strength after 28 days can be improved by 3-6MPa. Meanwhile, the invention also discloses a preparation method of the grinding addictive.

Description

technical field [0001] The invention relates to the field of cement production, in particular to a powder composite cement grinding aid and a preparation method thereof. Background technique [0002] Grinding aids currently on the market are mainly divided into powders and liquids. Liquid grinding aids are characterized by convenient storage, transportation and addition, but the disadvantage is that the cost is relatively high. Powder grinding aids are characterized by low cost, but they are used in large quantities, and most of them contain chloride ions that endanger the quality of cement. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a powder composite cement grinding aid that does not contain chloride ions and effectively improves the utilization of fly ash. [0004] Another technical problem to be solved by the present invention is to provide a preparation method of powder composite cement grinding aid w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/12C04B103/52
CPCC04B2103/52C04B40/0046Y02P40/10Y02W30/91C04B18/08C04B22/143C04B22/147C04B22/16C04B24/122C04B28/02
Inventor 邵继新孟渊李文斌司双龙杨映塘景国
Owner 兰州宏方新型建材科技有限公司
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