Cement clinker production admixture

A technology of cement clinker and admixture, which is applied in chemical instruments and methods, inorganic chemistry, nitrogen compounds, etc., can solve the problems of reducing the firing temperature, firing speed, single function, poor comprehensive efficiency, etc., to speed up the firing speed. , the effect of improving combustion efficiency, inhibiting diffusion and slippage

Active Publication Date: 2020-12-11
临沂德艺科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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  • Cement clinker production admixture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] An admixture for cement clinker production is composed of the following raw materials in percentage by weight: 1% ferric chloride, 2% ferric sulfate, 5% urea, 3% glycerin, 8% compound sodium sulfate, 6% ammonium nitrate, and The amount is water.

[0024] The composite sodium sulfate is obtained by mixing sodium carbonate and nano-boron nitride according to a mass ratio of 1:1; the preparation method of the nano-boron nitride is: dispersing 6g of hexagonal nano-boron nitride in 200mL of N-formaldehyde Add 5-10ml of N,N-dimethylethanolamine, 50ml of 5M NaOH solution to pyrrolidone, stir at 80°C for 12h, sonicate for 4h, centrifuge at 6000rpm for 20min, wash the lower precipitate with absolute ethanol, and dry in vacuum for 8h to obtain nano boron nitride.

[0025] The nano-boron nitride of the present invention adopts commercially available finished hexagonal boron nitride, which is purchased from Liaoning Boda Technology Co., Ltd.

[0026] The purity of N,N-dimethyleth...

Embodiment 2

[0032] An admixture for cement clinker production, which is composed of the following raw materials in weight percentage: 2% ferric chloride, 1% ferric sulfate, 6% urea, 4% glycerin, 6% compound sodium sulfate, 8% ammonium nitrate, and the balance for water.

[0033] The composite sodium sulfate is obtained by mixing sodium carbonate and nano-boron nitride according to a mass ratio of 1:1; the preparation method of the nano-boron nitride is: dispersing 6g of hexagonal nano-boron nitride in 200mL of N-formaldehyde Add 6ml of N,N-dimethylethanolamine, 50ml of 5M NaOH solution to pyrrolidone, stir at 80°C for 12h, sonicate for 4h, centrifuge at 6000rpm for 20min, wash the lower precipitate with absolute ethanol, and dry it in vacuum for 8h to obtain nano-nitrogen Boron.

[0034] The nano-boron nitride of the present invention adopts commercially available finished hexagonal boron nitride, which is purchased from Liaoning Boda Technology Co., Ltd.

[0035] The purity of N,N-dime...

Embodiment 3

[0041] An admixture for cement clinker production is composed of the following raw materials in percentage by weight: 3% ferric chloride, 5% ferric sulfate, 8% urea, 5% glycerin, 5% compound sodium sulfate, 7% ammonium nitrate, and the remaining The amount is water.

[0042] The composite sodium sulfate is obtained by mixing sodium carbonate and nano-boron nitride according to a mass ratio of 1:1; the preparation method of the nano-boron nitride is: dispersing 6g of hexagonal nano-boron nitride in 200mL of N-formaldehyde Add 8ml of N,N-dimethylethanolamine, 50ml of 5M NaOH solution to the base pyrrolidone, stir at 80°C for 12h, sonicate for 4h, centrifuge at 6000rpm for 20min, wash the lower precipitate with absolute ethanol, and dry it in vacuum for 8h to obtain nano-nitrogen Boron.

[0043] The nano-boron nitride of the present invention adopts commercially available finished hexagonal boron nitride, which is purchased from Liaoning Boda Technology Co., Ltd.

[0044] The pur...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/42C01B21/064B82Y40/00
CPCC04B7/425C04B7/428C04B7/421C01B21/064B82Y40/00
Inventor 王林李兰勇卢有华
Owner 临沂德艺科技发展有限公司
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