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Production process of phosphogypsum powder

A processing technology and phosphogypsum technology, applied in the chemical industry, can solve the problems of high investment, pollution, uneven quality of gypsum powder, etc., and achieve the effect of reducing investment cost and increasing strength

Inactive Publication Date: 2017-02-22
贵州省息烽县红海建材有限公司
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

The traditional method of frying gypsum powder is in a stage of high investment, low output and serious pollution, and the quality of gypsum powder is also uneven.

Method used

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  • Production process of phosphogypsum powder
  • Production process of phosphogypsum powder

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Embodiment Construction

[0010] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0011] The application history of gypsum is very long. In the early stage, it was simply made into chalk, putty powder, etc. The previous gypsum powder did not receive more attention and application. Now with the development of the construction industry, home improvement, mould, and sculpture, the importance of gypsum is gradually reflected. The chemical and physical properties of gypsum itself increase people's demand for it, and it has attracted more and more attention and attention.

[0012] For the convenience of use, gypsum is mostly made into gypsum powder, and there are many classifications of gypsum powder. Gypsum includes phosphogypsum powder, citric acid gypsum powder, and desulfurized gypsum powder according to different components. According to the color classification, there are white gypsum powder, green gypsum powder, yellow gypsum powder, colored gyp...

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Abstract

The invention relates to a production process of phosphogypsum powder, which comprises the following steps: transporting phosphogypsum waste residues from a raw material bin to a crusher through a belt and crushing to obtain raw gypsum powder, and transporting the raw gypsum powder to a feed bin where the gypsum powder is parched through a belt; feeding the raw gypsum powder in the feed bin into a feeder through a belt and entering a preheater pipe, allowing a blower fan positioned below the preheater pipe to feed the fine powder into a cyclone dust collector for separation, allowing the separated gypsum fine powder to fall into a collection hopper and then enter a screw feeder through a feeding isolator, and then feeding into a parching kettle; rolling and parching the raw gypsum powder in the parching kettle for 30-40 min at a temperature in a range of 150-190 DEG C, and indirectly heating by using a fluidized bed furnace positioned at the peripheral edge of the parching kettle through heat radiation to obtain calcined gypsum powder; and packing and warehousing the calcined gypsum powder at a specification of 10-1,000 Kg per bag. The phosphogypsum powder produced by the production process has very stable quality, and dispenses with an aging process, thereby greatly reducing the investment cost.

Description

technical field [0001] The invention belongs to the field of chemical industry, in particular to a production and processing technology of phosphogypsum powder. Background technique [0002] Gypsum powder is made from gypsum ore through a series of processes such as crushing, fine grinding, and frying. Gypsum powder has been used in the construction field, medicine field, industrial production field, agriculture, etc. from the relatively simple application in the past to the present, and the demand is gradually increasing, and it is also more and more favored by people. The types of gypsum powder are gradually increasing to meet the needs of different industries. The frying process of gypsum powder is also gradually improving, and the production equipment is constantly being updated, which further improves the production and quality of gypsum powder. Although the demand for gypsum powder is increasing day by day, and its application is becoming more and more extensive, the...

Claims

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Application Information

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IPC IPC(8): C04B11/036C04B11/26
CPCC04B11/036C04B11/26
Inventor 王君
Owner 贵州省息烽县红海建材有限公司
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