Preparation method of plastering anhydrite retarder

Abstract

The invention provides a preparation method of a plastering anhydrite retarder. The method comprises the following steps: firstly levigating slag and Portland cement clinker, and then, in parts by weight, mixing and preparing 1 to 6 parts of slag, 1 to 6 parts of Portland cement clinker and 0.1 to 0.5 part of silica fume into the plastering anhydrite retarder. The method solves the problem that the plastering anhydrite is poor in operability, the preparation process of the retarder is simple, the production cost is low, the energy consumption is low, the use amount of organic gypsum retardersis reduced, and the energy is saved. The method also provides a new way for the resource utilization of slag.

Description

technical field [0001] The invention relates to a preparation method of a plaster retarder, which can be used in the production of plaster. Background technique [0002] Gypsum material has become a new type of building material commonly used in modern buildings because of its small deformation, good fire resistance and harmlessness to the human body. It has excellent performance, safety, comfort, and environmental protection. The outstanding disadvantage of gypsum building materials is that it sets quickly, and the initial setting time is generally only a few minutes to ten minutes, which cannot meet the requirements of construction operation time. The general solution is to add gypsum retarder to the gypsum material to prolong the time. its setting time. Commonly used gypsum retarders are mainly organic acids, including citric acid, sodium citrate, sodium polyphosphate and proteins; although they can also play a role in regulating the setting time of gypsum materials, the...

AI Technical Summary

Problems solved by technology

The outstanding disadvantage of gypsum building materials is that it sets quickly, and the initial setting time is generally only a few minutes to ten minutes, which cannot meet the requirements of construction operation time. The general solution is to add gypsum retarder to the gypsum material to prolong the time. its setting time

Commonly used gypsum retarders are mainly organic acids, including citric acid, sodium citrate, sodium polyphosphate and proteins; although they can also play a role in regulating the setting time of gypsum materials, the production process of such retarders is complicated , high energy consumption, high cost, and great loss of strength to gypsum materials

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