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A kind of preparation method of superfine active β gypsum micropowder material

A gypsum and active technology, which is applied in the field of preparation of ultrafine active β gypsum powder materials, can solve the problems of lack of natural gypsum, insufficient strength of gypsum powder, and insufficient wide application range, etc., to solve processing problems, improve quality, and increase stability. Effect

Inactive Publication Date: 2018-06-19
GUIZHOU KAILIN PHOSPHOGYPSUM INTEGRATION UTILIZATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the comprehensive utilization rate of phosphogypsum in our country is not high. The active gypsum powder made of industrial by-product gypsum as raw material and compound stabilizer is used in the present invention, which not only solves the current situation of lack of natural gypsum, but also solves the problem of insufficient strength of traditional gypsum powder. not broad enough

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A kind of preparation method of active superfine gypsum micropowder, concrete preparation steps are as follows:

[0029] 1) Raw material preparation: prepare 30kg each of natural gypsum, phosphogypsum, and desulfurized gypsum in dihydrate state;

[0030] 2) Crushing raw materials: gypsum raw materials enter the crusher through the feeder, and the crusher crushes the large-sized gypsum ore into small pieces of 10mm for standby;

[0031] 3) Material transportation: the crushed gypsum raw material is transported to the storage bin by the hoist for standby, and the storage bin is designed according to the requirements for the storage time of the material to ensure a stable supply of the material;

[0032] 4) The material is evenly and continuously fed into the grinder through the electromagnetic vibrating feeder, and ground into primary gypsum powder with a fineness of 80 meshes, and then separated by a powder classifier to screen out primary gypsum powder with a fineness o...

Embodiment 2

[0038] A kind of preparation method of active superfine gypsum micropowder, concrete preparation steps are as follows:

[0039] 1) Raw material preparation: prepare 30kg each of natural gypsum, phosphogypsum, and desulfurized gypsum in dihydrate state;

[0040] 2) Crushing raw materials: gypsum raw materials enter the crusher through the feeder, and the crusher crushes the large-sized gypsum ore into small pieces of 30mm for standby;

[0041] 3) Material transportation: the crushed gypsum raw material is transported to the storage bin by the hoist for standby, and the storage bin is designed according to the requirements for the storage time of the material to ensure a stable supply of the material;

[0042] 4) The material is evenly and continuously fed into the grinder by the electromagnetic vibrating feeder, ground into primary gypsum powder with a fineness of 100 mesh, and then separated by classifying by a powder separator to screen out primary gypsum powder with a finene...

Embodiment 3

[0048] A kind of preparation method of active superfine gypsum micropowder, concrete preparation steps are as follows:

[0049] 1) Raw material preparation: prepare 30kg each of natural gypsum, phosphogypsum, and desulfurized gypsum in dihydrate state;

[0050] 2) Crushing raw materials: gypsum raw materials enter the crusher through the feeder, and the crusher crushes the large-sized gypsum ore into small pieces of 50mm for standby;

[0051] 3) Material transportation: the crushed gypsum raw material is transported to the storage bin by the hoist for standby, and the storage bin is designed according to the requirements for the storage time of the material to ensure a stable supply of the material;

[0052]4) The material is evenly and continuously fed into the grinder through the electromagnetic vibrating feeder, and ground into primary gypsum powder with a fineness of 120 mesh, and then separated by a powder separator to screen out primary gypsum powder with a fineness of 1...

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Abstract

The invention discloses a preparation method of an ultrafine active beta gypsum micro-powder material and belongs to the technical filed of inorganic materials. Natural gypsum and industrial byproduct gypsum are taken as raw materials, a stabilizer is added in a grinding process, and ultrafine active gypsum micro-powder is prepared. The problem of lack of natural gypsum resources at present is solved through comprehensive use of waste residues such as the industrial byproduct gypsum, the sieving rate of the gypsum micro-powder material prepared with the method is 90% or higher, the breaking strength of the prepared micro-powder material dried for 2 h or longer is 2 MPa or higher, and the gypsum micro-powder material has high strength and good activity in the aspect of product performance and is applied more widely.

Description

technical field [0001] The invention belongs to the technical field of inorganic materials, and in particular relates to a preparation method of an ultrafine active β-gypsum micropowder material. Background technique [0002] At present, the fineness of natural gypsum powder products is 100-200 mesh, which can only be used to produce gypsum wall materials and mortar products in the construction field, thus limiting its application field; High-strength Modified Gypsum Powder" pointed out that although traditional gypsum powder can meet the current technical requirements, with the increasing number of high-rise buildings, the strength requirements for gypsum powder are getting higher and higher, and traditional gypsum powder can no longer meet the requirements. The need for building materials. [0003] Patent No. CN201510725738.9 "A Method of Using Natural Gas to Dry and Calcinate Citrate Gypsum to Produce Gypsum Powder" proposes that with the rapid development of the constru...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B11/26
CPCC04B11/26C04B11/262C04B11/264
Inventor 李泽钢
Owner GUIZHOU KAILIN PHOSPHOGYPSUM INTEGRATION UTILIZATION
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