Sunset yellow coagulant for accelerating hydration of beta semi-hydrated gypsum

A technology of hemihydrate gypsum and sunset yellow, applied in the field of coagulants, can solve problems such as poor stability of coagulants, and achieve the effects of good stability, easy popularization and use, and stable and wide source of raw materials

Inactive Publication Date: 2018-08-24
QUJING NORMAL UNIV
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Problems solved by technology

[0009] The purpose of the present invention is to disclose a sunset yellow coagulant for accelerated hydration of β hemihydrate gypsum, so th

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Abstract

A sunset yellow coagulant for accelerating hydration of beta semi-hydrated gypsum includes a main material and an additive, wherein the main material is sunset yellow. The coagulant includes, by weight, not less than 85% of the sunset yellow, and not more than 15% of the additive comprising one or more of saccharides, starch and inorganic sulfate salt. The components are uniformly mixed and groundto prepare the sunset yellow coagulant. The sunset yellow coagulant can accelerate hydration of the semi-hydrated gypsum. Compared gypsum coagulant in the prior art, the product has the advantages of: 1) the coagulant is free of special process sand can be prepared by purchasing the raw materials on market and compounding the raw materials; 2) the coagulant has good stability and has stable and extensive raw material sources, so that for the gypsum industry, the product is easy to promote and use.

Description

technical field [0001] The invention relates to a sunset yellow coagulant for accelerating the hydration of β hemihydrate gypsum. Background technique [0002] β hemihydrate gypsum has variable properties in a wide range, which can meet the technical and economic requirements of gypsum board, especially the requirement that its process conditions and gelation can be changed within a few seconds to a few hours. The initial setting time of the material meets the production requirements of the gypsum board industry. In order to meet these requirements, it is necessary to use admixtures to adjust its setting time. Therefore, the research and development of β hemihydrate gypsum hydration coagulant has very important resource and environmental significance. [0003] In the production of gypsum wallboard, the accelerated setting of β hemihydrate gypsum is very important to the production process. A modern gypsum wallboard factory can increase the production rate to 220m / min. In...

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Application Information

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IPC IPC(8): C04B24/38C04B28/14C04B103/12
CPCC04B28/14C04B40/0042C04B2103/12C04B2201/05C04B22/147C04B24/38C04B24/10C04B24/20
Inventor 郑绍聪余仕问闫宇星王智娟缪应纯朱丽苹
Owner QUJING NORMAL UNIV
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