Cement clinker production admixture

Abstract

The invention discloses a cement clinker production admixture, and belongs to the technical field of building material admixtures. The admixture is prepared from the following raw materials in percentage by weight: 1-5% of ferric chloride, 1-10% of ferric sulfate, 5-10% of urea, 3-5% of glycerol, 5-10% of composite anhydrous sodium sulphate, 5-10% of ammonium nitrate and the balance of water. Thecombustion efficiency and the cement clinker quality can be effectively improved by adding 1.4-1.6 per mill of the admixture disclosed by the invention into the pulverized coal mill. The admixture, urea and ammonium nitrate play a role in denitration and forging assistance, glycerin plays a role in increasing heat of the grinding aid, and ferric chloride catalyzes calcination of the cement clinker. Besides, anhydrous sodium sulphate and modified boron nitride achieve synergistic interaction, the purposes of energy conservation, emission reduction and efficiency improvement are achieved together, and the high-strength cement clinker is obtained. Meanwhile, the technical purposes of accelerating the firing speed, increasing the yield, saving the coal consumption, fixing sulfur, denitrating and reducing the cost are achieved, and wide economic benefits and social benefits are achieved.

Description

technical field [0001] The invention belongs to the technical field of building material admixtures, in particular to an admixture for cement clinker production. Background technique [0002] With the development of the construction industry today, the demand for cement, as a building material with extensive application value, is increasing. At the same time, the requirements for the variety and quality of cement are also increasing. How to reduce the production and application cost of cement under the condition of ensuring or improving cement strength and various physical properties has become a hot topic. [0003] It is well known that adding certain admixtures in cement can improve the amount of mixed materials in cement and some other properties. At present, the cement industry has achieved remarkable results in eliminating backward production capacity. The existing cement production capacity is huge, almost all of which are dry rotary kiln production lines. Admixtures...

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Problems solved by technology

[0004] In recent years, people have continuously improved cement admixtures through a large number of scientific experiments, and developed cement admixtures with different properties; the main defects of existing cement admixtures are: single function, poor overall performance, the main purpose of the present invention The purpose is to invent a liquid admixture for cement clinker firing to reduce the firing temperature, speed up the firing speed, fix sulfur and denitrify, so as to achieve energy saving, production increase, quality improvement, cost reduction and efficiency increase. Purpose

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