Cement grinding aid for preventing crystallization and salt particle precipitation at low temperature

A cement grinding aid and anti-crystallization technology, which is applied in the field of cement additives, can solve problems affecting the application range and use effect, liquid into solid, salt precipitation, etc., to achieve expanded use range, low cost, and stable fineness Effect

Active Publication Date: 2013-08-21
山东丞华企业投资控股有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cost of liquid grinding aids is high, and the second is that triethanolamine crystals and a large amount of salt particles are easy to form when the ambient temperature is lower than 5 degrees. In severe cases, all liquids will become solids, especially in northern regions. For prominence, it seriously affects the scope of application and the effect of use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] formula:

[0028] Anhydrous Calcium Chloride 10Kg Calcium Nitrite 2 Kg Triethanolamine 20 Kg

[0029] Complex alcohol 8 Kg Complex stabilizer 1 Kg Sucrose residue 25 Kg

[0030] Water 33Kg

[0031] Described triethanolamine is industrial grade 85 mixed amine;

[0032] The complex alcohol is a composition of ethylene glycol and propylene glycol, and the weight ratio of ethylene glycol and propylene glycol is 5:5.

[0033] The composite stabilizer is compounded by dispersant NNO and dispersant MF, and the weight ratio of dispersant NNO and dispersant MF is 7:3.

[0034] The sugar content of the sucrose residue is 48, and the Brix is ​​70.

[0035] Preparation:

[0036] After accurately measuring various raw materials according to the above formula, mix and force mechanical stirring to obtain the target product.

[0037] Apply 0.03% addition amount to produce 325 composite portland cement in a 25-ton mill per unit hour. The output and cement performance per unit hour...

Embodiment 2

[0041] formula:

[0042] Anhydrous calcium chloride 13Kg Triethanolamine 15 Kg Complex alcohol 8 Kg

[0043] Composite stabilizer 1 Kg Cane sugar residue 25 Kg Water 46Kg

[0044] Described triethanolamine is industrial grade 85 mixed amine;

[0045] The complex alcohol is a composition of ethylene glycol, propylene glycol, and glycerol, and the weight ratio of ethylene glycol, propylene glycol, and glycerol is 5:3:2.

[0046] The composite stabilizer is compounded by dispersant NNO and dispersant MF, and the weight ratio of dispersant NNO and dispersant MF is 7:3.

[0047] The sugar content of the sucrose residue is 48, and the Brix is ​​70.

[0048] Preparation:

[0049] After accurately measuring various raw materials according to the above formula, mix and force mechanical stirring to obtain the target product.

[0050] The 0.05% dosage is applied to a 25-ton mill per hour to produce 325 composite Portland cement. The output and cement performance per hour are as foll...

Embodiment 3

[0054] formula:

[0055] Anhydrous Calcium Chloride 8Kg Calcium Nitrite 4 Kg Triethanolamine 15 Kg

[0056] Complex alcohol 6 Kg Compound stabilizer 3 Kg Cane sugar residue 22 Kg

[0057] Water 50Kg

[0058] Described triethanolamine is industrial grade 85 mixed amine;

[0059] The complex alcohol is a composition of ethylene glycol, propylene glycol, and glycerol, and the weight ratio of ethylene glycol, propylene glycol, and glycerol is 4:3:2.

[0060] The composite stabilizer is compounded by dispersant NNO and dispersant MF, and the weight ratio of dispersant NNO and dispersant MF is 7:3.

[0061] The sugar content of the sucrose residue is 48, and the Brix is ​​70.

[0062] Preparation:

[0063] After accurately measuring various raw materials according to the above formula, mix and force mechanical stirring to obtain the target product.

[0064] Apply 0.03% addition amount to produce 425 ordinary Portland cement in a 25-ton mill per unit hour. The output and cement...

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Abstract

The invention discloses a cement grinding aid for preventing crystallization and salt particle precipitation at low temperature, and belongs to the field of cement additives. The cement grinding aid is prepared by mixing the following materials in part by weight: 5 to 15 parts of calcium chloride, 0 to 5 parts of calcium nitrite, 10 to 30 parts of triethanolamine, 5 to 10 parts of compound alcohol, 1 to 5 parts of compound stabilizer, 20 to 30 parts of industrial sugar residue and 30 to 60 parts of water. Compared with the prior art, the cement grinding aid can be applied to cement productionin a dosage range of 0.03 to 0.1 percent, and has the characteristics of energy conservation, environmental protection, low material cost, high yield of machine-hour, low consumption of clinker, no crystallization or salt particle precipitation at low temperature, and the like.

Description

technical field [0001] The invention relates to the field of cement additives, in particular to a low-temperature anti-crystallization anti-salt grain precipitation anti-cement grinding aid. Background technique [0002] Cement grinding aid is a chemical additive to improve the grinding effect and performance of cement, which can significantly increase the output of cement table and various technical indicators. There are two types of common cement grinding aids: liquid and powder (solid), and now liquid grinding aids are widely used. Foreign countries have begun to study and use grinding aids since the 1930s, while my country has only begun to study and use them since the 1970s, and it has been nearly ten years since large-scale use of liquid grinding aids. However, the cost of liquid grinding aids is high, and the second is that triethanolamine crystals and a large amount of salt particles are easy to form when the ambient temperature is lower than 5 degrees. In severe ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/12C04B103/52
Inventor 赵同习张培清任春燕王爱民王庆珍赵兵江学文
Owner 山东丞华企业投资控股有限公司
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