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A kind of cement grinding aid and preparation method thereof

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: 2017-06-06
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, in parts by mass, 60 parts of alkali slag, 15 parts of straw ash, 20 parts of steel slag and 5 parts of wood calcium are mixed, stirred evenly and formed into balls with a diameter of 10-15mm, and then stacked and solidified to make Free water and part of crystal water are removed from the material balls. The cement grinding aid contains 30.12% calcium oxide, 28.21% silica, 8.34% alumina, 6.43% sulfur trioxide and 5.01% by weight. % Of urea.

Embodiment 2

[0017] Cement grinding aid, according to the mass parts, 65 parts of alkali slag, 10 parts of straw ash, 15 parts of steel slag and 10 parts of wood calcium are mixed, stirred evenly and formed into balls with a diameter of 10-15mm, and then stacked and solidified to make Free water and part of crystal water are removed from the material balls. The cement grinding aid contains 41.13% calcium oxide, 35.20% silica, 16.11% alumina, 12.03% sulfur trioxide and 8.05% by weight. % 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 specifically 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, it has caused a lot of consumption of natural mineral resources such as limestone, clay, coal, etc., and also caused the pressure of environmental pollution to become increasingly prominent. The production of cement clinker The mineral composition is densely crystallized, making it difficult to grind or over-grind 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 other waste slags such as limestone, slag, coal ash, pozzolan, coal slag...

Claims

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Application Information

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Patent Type & Authority Patents(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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