Cement grinding aid and preparation method therefor

The technology of cement grinding aid and alkali slag is applied in the field of cement grinding aid, which can solve the problems of low product quality and high production cost of cement grinding aid, improve cement quality, speed up dispersing and dissolving, and increase production per hour. Effect

Inactive Publication Date: 2015-08-19
淮安市水泥厂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Purpose of the invention: the purpose of this invention is to solve the problems of high production cost and low product quality of cement grinding aids in the prior art, and provide a kind of cement grinding aid with low production cost and good product performance and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Cement grinding aid, calculated in parts by mass, mixed 60 parts of alkali slag, 15 parts of straw ash, 20 parts of steel slag and 5 parts of wood calcium, stirred evenly and formed into balls with a diameter of 10-15mm, and then stacked and solidified to make Free water and part of crystallization water are removed from the material ball, and the cement grinding aid contains 30.12% of the total mass percentage of calcium oxide, 28.21% of silicon dioxide, 8.34% of alumina, 6.43% of sulfur trioxide and 5.01% % of urea.

Embodiment 2

[0017] Cement grinding aid, calculated in parts by mass, mixed 65 parts of alkali slag, 10 parts of straw ash, 15 parts of steel slag and 10 parts of wood calcium, stirred evenly and formed into balls with a diameter of 10-15mm, and then stacked and solidified, so that Free water and part of crystallization water are removed from the material ball, and the cement grinding aid contains 41.13% of the total mass percentage of calcium oxide, 35.20% of silicon dioxide, 16.11% of alumina, 12.03% of sulfur trioxide and 8.05% % of urea.

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Abstract

The present invention discloses a cement grinding aid. The grinding aid comprises the following compositions components in parts by weightmass: 60-65 parts of alkali slag, 10-15 parts of straw ash, 15-20 parts of steel slag and 5-10 parts of calcium lignosulphonate, and the compositions components contain the following substances in based on the total mass percentage of the cement grinding aid by mass percentage: 30-41% of calcium oxide, 28-35% of silicon dioxidesilica, 8-16% of aluminum oxidealundum, 6-12% of sulfur trioxide and 5-8% of carbamideurea. The preparation method comprises the ofllowng steps: fFirstly, uniformly mixing and stirring the alkali slag, the straw ash, the steel slag and the calcium lignosulphonate are mixed and uniformly agitated; secondly, the mixture is preparing the mixture ed into spherical particles; lastlyand finally, stacking and curing the spherical particles are subjected to stacking, solidification and removing free water and partial part of water of crystallization removal, as a result to obtain, the a cement grinding aid is obtainedproduct. The cement grinding aid disclosed by the present invention is low in production cost, and good in product performance.

Description

technical field [0001] The invention belongs to the technical field of cement production, and in particular relates to a cement grinding aid prepared from solid waste. Background technique [0002] With the rapid development of my country's building materials industry, especially the new technology of the cement industry is advancing by leaps and bounds, resulting in the consumption of a large amount of natural mineral resources such as limestone, clay, coal, etc., and the pressure on environmental pollution has become increasingly prominent. The cement clinker produced The mineral composition is crystallized and dense, which makes it difficult to grind or oversaturation in cement production, resulting in unreasonable distribution of cement grinding particles, increasing electricity costs, reducing cement production, and also affecting the improvement of cement quality. At present, the mixed materials mixed in my country's cement production are some limestone, slag, coal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/18C04B24/12C04B22/06C04B103/52
Inventor 谭纪林华玉海华建军蒋兆广
Owner 淮安市水泥厂有限公司
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