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Cement grinding aid

A technology of cement grinding aids and waste liquid, which is applied in the field of cement grinding aids, can solve the problems of high purchase price of grinding aids, unsatisfactory water demand, and unclear components, so as to reduce over-grinding and optimize Cement particle gradation, effect of cost reduction

Active Publication Date: 2016-01-27
ZHANGQIU HUAMING CEMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the purchase price of existing grinding aids is relatively high, and the composition is not clear, so it is difficult to adjust the adaptability of cement in time
At the same time, the early strength of cement, setting time, water demand and other indicators cannot achieve good results.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1. a kind of cement grinding aid, is made of the raw material of following weight:

[0022]

[0023] The biochemical waste liquid is the waste liquid produced by Jinan Huaming Biochemical Co., Ltd., which produces industrial sodium gluconate.

[0024] The preparation method is:

[0025] (1) First mix the biochemical waste liquid and sodium hydroxide evenly, and react at room temperature, and the reaction time is about 20 minutes.

[0026] (2) Add 20kg of water to sodium thiosulfate to prepare an aqueous solution of sodium thiosulfate, then add it to the mixture in step (1), and stir evenly at room temperature.

[0027] (3) Add triethanolamine, polyether polyol and the rest of water into the mixture in step (2), and stir evenly at room temperature.

Embodiment 2

[0028] Embodiment 2 A kind of cement grinding aid, is made of the raw material of following weight:

[0029]

[0030] The biochemical waste liquid is the waste liquid from the production of industrial itaconic acid by Jinan Huaming Biochemical Co., Ltd.

[0031] The preparation method is the same as in Example 1.

Embodiment 3

[0032] Embodiment 3 A kind of cement grinding aid, is made of the raw material of following weight:

[0033]

[0034] The biochemical waste liquid is a mixture of industrial sodium gluconate waste liquid and industrial itaconic acid waste liquid produced by Jinan Huaming Biochemical Co., Ltd., with a mixing ratio of 1:1.

[0035] The preparation method is the same as in Example 1.

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Abstract

The invention provides a cement grinding aid. The cement grinding aid comprises raw materials as follows: triethanolamine, polyether polyol, sodium hydroxide, sodium thiosulfate and a biochemical waste liquid, wherein the biochemical waste liquid is one of or a mixture of a waste liquid produced during production of industrial sodium gluconate and a waste liquid produced during production of an industrial itaconic acid product. The cement grinding aid can optimize the cement grain composition, activate the early strength of cement, improve the powder grinding efficiency of the cement and reduce energy consumption.

Description

technical field [0001] The invention relates to the technical field of cement production, in particular to a cement grinding aid. Background technique [0002] In the grinding process of cement clinker, adding a small amount of additional substances (liquid or solid substances) can significantly improve the grinding efficiency or reduce energy consumption without damaging the performance of cement. This kind of chemical additives is commonly called cement Grinding aid. At present, the domestic research and application of cement grinding aids include liquid grinding aids and solid grinding aids, and most of their basic components belong to organic surface active substances. Mainly: amines, alcohols, alcohol amines, lignin sulfonates, fatty acids and their salts, alkyl sulfonates, etc. The specific substances are: triethanolamine, diethanolamine, ethylene glycol, lignosulfonate, formic acid, stearic acid, oleic acid, urea, sodium dodecylbenzenesulfonate, etc. In fact, there...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/12C04B22/14C04B103/52
Inventor 毕研龙
Owner ZHANGQIU HUAMING CEMENT
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