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...

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