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Process of producing gypsum with mirabilite slag

A technology for slag and mirabilite, which is applied in the field of preparing gypsum from mirabilite slag

Inactive Publication Date: 2005-09-28
何宝成
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of reuse of Glauber's salt slag and provide a method for preparing gypsum from Glauber's salt slag

Method used

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Examples

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Embodiment Construction

[0010] The method for producing gypsum from Glauber's salt slag of the present invention will be described in further detail below in conjunction with specific examples.

[0011] (1) Select a site near the place where the slag is produced, and use a pulverizer to pulverize the thenardite slag to a powder with a fineness of 8 to 80 meshes; in this step, a sand maker or similar mechanical equipment can also be used to pulverize the thenardite slag.

[0012] (2) Using the property that sodium sulfate in Glauber's salt slag powder is soluble in water, mix Glauber's salt slag powder with water, the ratio of Glauber's salt slag powder to water is more than 1:2, and continuously operate under mechanical stirring. Utilizing the terrain drop, the stirred mixture flows into the independent No. 1 sedimentation tank. The sedimentation tank can also become a dissolution tank, and its size needs to be matched with it according to the output. The volume of the sedimentation tank should be de...

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Abstract

The process of producing gypsum with mirabilite slag includes the following steps: crushing mirabilite slag in a mill to 8-80 mesh; mixing mirabilite slag powder with water via mechanical stirring; depositing the mixture repeatedly in deposition tanks until the deposit has required low sodium sulfate content; and drying the final deposit to obtain the gypsum. The said process is simple, practical and low in cost, and can eliminate pollution caused by mirabilite slag while producing useful material.

Description

technical field [0001] The invention relates to a method for preparing gypsum, in particular to a method for preparing gypsum from Glauber's salt slag. Background technique [0002] In the prior art, due to the accompanying calcium sulfate component in Glauber's salt ore, Glauber's salt ore is used to produce Yuanming powder, namely Na 2 SO 4 Afterwards, a large amount of thenardite mine waste residue was produced, which not only polluted the environment, but also occupied a large amount of land to pile up a large amount of continuously produced slag. The reuse of Glauber's salt ore waste slag has become the key to solve the environmental pollution caused by the production of sodium sulfate from Glauber's salt ore. Contents of the invention [0003] The purpose of the present invention is to solve the problem of reuse of the thenardite slag and provide a method for preparing gypsum from the thenardite slag. [0004] In order to realize the foregoing invention object, th...

Claims

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Application Information

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IPC IPC(8): C04B11/05
Inventor 何宝成
Owner 何宝成
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