Method for preparing cement grinding aid from leachate

Abstract

The invention belongs to the technical field of cement grinding aid preparation, and particularly relates to a method for preparing a cement grinding aid from a leachate. The method comprises the following steps: S1, adding activated carbon into the landfill leachate, adsorbing peculiar smell in the landfill leachate, decolorizing at the same time, and filtering the activated carbon through a filter screen after no peculiar smell exists in the landfill leachate; S2, adding a treating agent into the landfill leachate, stirring to form a flocculation precipitate, and filtering the flocculation precipitate; S3, adjusting the pH value of the landfill leachate to 9-11 to obtain a modified landfill leachate; and S4, adding the modified landfill leachate, triethanolamine, glycerol triacetate, propylene glycol, triisopropanolamine, sodium silicate and molasses into water, and stirring and mixing to obtain the cement grinding aid. The landfill leachate is used as a main raw material to replace heavy alcohol in the cement grinding aid, and the addition amount of the heavy alcohol is reduced, so that the cost of the cement grinding aid is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of preparation of cement grinding aids, in particular to a method for preparing cement grinding aids from leachate. Background technique [0002] In the grinding process of cement materials, adding a small amount of additional substances (gas, liquid or solid substances) can significantly improve the grinding efficiency or reduce energy consumption without damaging the performance of cement. : Cement grinding aid. Cement grinding aid is a chemical additive to improve the grinding effect and performance of cement, which can significantly increase the output of cement table and various technical indicators. Cement grinding aids can greatly reduce the phenomenon of electrostatic adsorption and ball formation during the grinding process, and can reduce the tendency of re-agglomeration of ultrafine particles formed during the grinding process. Cement grinding aids can also significantly improve the fluidity of ...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of method that utilizes leachate to prepare cement grinding aid, to solve the inconvenient treatment of landfill leachate in the city that proposes in the above-mentioned background technology, and processing cost is higher, and the heavy alcohol in landfill leachate It is an important raw material for the production of cement grinding aids