High-efficient wet-process cement raw slurry thinning agent

The present invention relates to a thinning agent for wet-process cement raw slurry, belonging to an additive for wet-process cement slurry. It is characterized by that the sulfate (or alkali) ligninextracted from "black liquor" of paper-making pulp using straw as raw material is modified...

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Bibliographic Details
Main Authors JIANXIN CAO, CHAOMING LI, XIANGQIN ZENG
Format Patent
LanguageEnglish
Published 05.01.2000
Edition7
Subjects
ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
LIME, MAGNESIA
METALLURGY
REFRACTORIES
SLAG
TREATMENT OF NATURAL STONE
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Summary:The present invention relates to a thinning agent for wet-process cement raw slurry, belonging to an additive for wet-process cement slurry. It is characterized by that the sulfate (or alkali) ligninextracted from "black liquor" of paper-making pulp using straw as raw material is modified by sulfonation, and its solubility and activity are greatly raised, so that it can be directly used as thinning agent for raw slurry in the course of cement production by wet method or semi-dry method. As compared with existent technology, addition of said additive can reduce water consumption by above 30%,and can eliminate the contamination of paper-making black liquor to environment, and can have the energy consumption of wet cement production reduced to obtain obvious energy-saving effect.
Bibliography:Application Number: CN1998114593