A kind of industrial synthetic sulfur gypsum and preparation method thereof

Abstract

The invention discloses industrial synthetic sulfur gypsum and a preparation method thereof. The industrial synthetic sulfur gypsum is prepared from the following ingredients including 95 to 99 percent of industrial dihydrate gypsum and 1 to 5 percent of accelerated crystallizing agents. The preparation method comprises the following steps of S1, taking and mixing fluorgypsum, titanium gypsum and other industrial gypsum; performing uniform stirring; S2, in the mixed industrial gypsum, adding sodium sulfate in glauberite gypsum for reaction; controlling the temperature to be lower than 60 DEG C; performing crystallization reaction on the industrial gypsum; S3, taking crystallization gypsum in the S2 for secondary crushing stirring; crushing the gypsum into powder. The fluorgypsum and other industrial dihydrate gypsum are used and mixed to be produced into the sulfur gypsum; the sodium sulfate in glauberite gypsum is matched, so that the crystallization of the dihydrate gypsum can be accelerated; the external water production cost is reduced, so that the industrial production effect is achieved; the technical indexes of the obtained gypsum are shown as follows: the sulfur trioxide content can reach 35 percent or higher; the crystallization water content reaches 10 percent or higher; the external water content is less than 10 percent, so that good economic benefits and social benefits are obtained.

Description

technical field [0001] The invention relates to the field of industrial gypsum reuse, in particular to an industrial synthetic sulfur gypsum and a preparation method thereof. Background technique [0002] Natural gypsum is an essential raw material for cement production, and its main components are composed of calcium sulfate and crystal water. Its main indicators are about 30% sulfur trioxide and about 10% crystal water. And the existing industrial waste residue, i.e. fluorine gypsum sulfur trioxide has 53% and no water of crystallization. Titanium gypsum has about 34% sulfur trioxide and about 18% crystal water. The external level is 35% on average. If the gypsum used in cement production has no crystal water, it will affect the performance of cement, and if the external water exceeds 10%, it will not be able to produce normally. Contents of the invention [0003] In order to solve the above technical problems, the present invention proposes an industrial synthetic s...

AI Technical Summary

Problems solved by technology

If the gypsum used in cement production has no crystal water, it will affect the performance of cement, and if the external water exceeds 10%, it will not be able to produce normally.

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