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Preparation method of biomass cement grinding aid

A cement grinding aid and biomass technology, applied in the field of cement additives, can solve the problems of high price and cost, poor performance stability, and poor grinding aid effect, and achieve the effects of small molecular weight, reduced free energy, and reduced agglomeration

Inactive Publication Date: 2019-07-02
张忠云
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  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem mainly solved by the present invention is aimed at the defects that most of the cement grinding aid formulas widely used in China are alcohol amines and polyalcohol products, the price and cost of which are relatively high, and poor performance stability leads to poor grinding aid effect. Provided is a preparation method of biomass cement grinding aid

Method used

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Examples

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Effect test

preparation example Construction

[0027] Preparation of explosive waste: mix pine bark and bagasse in a mass ratio of 2:1 and put them into a tissue pulverizer, pulverize for 20 minutes to obtain a mixed pulverized product, put the mixed pulverized product into a steam explosion tank, and heat it at a temperature of 150 ℃, and the pressure is 1.5MPa to carry out steam explosion to obtain the explosion product;

[0028] Preparation of enzymatic hydrolyzate:

[0029] Mix the explosive product with cellulase, pectinase and protease in a mass ratio of 20:1:1:1 and put it into an enzymatic hydrolysis tank, then put the enzymatic hydrolysis tank into a thermostat at 30°C, Set for enzymatic hydrolysis for 12 hours; after the end of the enzymatic hydrolysis, the enzymatic hydrolysis product was obtained;

[0030] Preparation of reactants:

[0031] Mix the enzymatic hydrolysis product and hydrochloric acid with a concentration of 0.1mol / L at a mass ratio of 1:5 and put it into a three-necked flask with a stirrer and ...

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Abstract

The invention relates to a preparation method of a biomass cement grinding aid, and belongs to the technical field of cement grinding aid. The preparation method comprises following steps: pine bark and bagasse are taken as raw materials, are crushed, and are subjected to steam explosion so as to obtain an explosion product; the explosion product is mixed with cellulase, pectase, and protease forenzymatic hydrolysis so as to obtain an enzymatic hydrolysis product; the enzymatic hydrolysis product is subjected to acid treatment, oxidation, and alkali treatment reaction respectively so as to obtain a reaction filtered residue; and at last, the reaction filtered residue is mixed with sodium sulfite for reaction, and vacuum freeze-drying is carried out so as to obtain the biomass cement grinding aid. The biomass cement grinding aid is excellent in grinding aid effect, and promising in application prospect.

Description

technical field [0001] The invention relates to a preparation method of a biomass cement grinding aid, which belongs to the technical field of cement additives. Background technique [0002] With the rapid development of my country's cement industry, and the higher and higher requirements for energy saving and emission reduction, the application of grinding aids will be paid more attention by cement manufacturers, and its development prospects are extremely broad. Improving the quality of grinding cement, improving the grinding efficiency of cement materials, reducing energy consumption and increasing production have become the primary tasks of cement production enterprises. In recent years, relevant universities and scientific research institutes have done a lot of in-depth research on grinding aids, but there are still many problems in the research on grinding aids at home and abroad. At present, most of the liquid cement grinding aid formulas widely used in China are pro...

Claims

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Application Information

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IPC IPC(8): C04B24/14C04B103/52
CPCC04B40/0042C04B2103/52C04B18/265C04B18/248C04B24/14C04B24/00C04B22/122C04B22/08C04B22/062C04B22/147
Inventor 张忠云
Owner 张忠云
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