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Phosphogypsum purification and neutralization apparatus

A purification device and phosphogypsum technology, which is applied in the field of purification and neutralization devices, can solve the problems of increasing the storage pressure of slag yards, environmental pollution, and difficult recycling of phosphogypsum, so as to achieve great economic benefits, reduce environmental pollution, and prolong storage The effect of years

Active Publication Date: 2012-01-18
WENGFU (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Phosphogypsum is mainly produced in the solid waste discharged during the production process of wet-process phosphoric acid plant. Since the phosphogypsum produced by wet-process phosphoric acid plant contains various impurities such as unwashed phosphoric acid, fluosilicic acid and organic matter, currently phosphogypsum bricks, In addition to the use of cement retarder as a raw material, the phosphogypsum produced by the wet-process phosphoric acid plant is difficult to recycle in the plasterboard construction industry, and the recycling rate of phosphogypsum is low
The current treatment method is to use a slurry pump to pump it to the phosphogypsum slag yard for stacking, which will continuously increase the pressure of the slag yard and cause environmental pollution.
[0003] In the Chinese patent database, there is No. 200820174900.8 "A Phosphogypsum Treatment Device" for applications involving phosphogypsum purification devices, but so far there is no process and device that uses phosphogypsum produced by wet-process phosphoric acid devices as raw materials to produce plasterboard. Technical solution of purification and neutralization device

Method used

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  • Phosphogypsum purification and neutralization apparatus
  • Phosphogypsum purification and neutralization apparatus

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Embodiment

[0018] A certain factory adopts the present invention, and the device is shown in the accompanying drawings,

[0019] The purification device consists of a phosphogypsum feed line 15, a turntable filter 1, a washing circulation tank 2, a vacuum pump 3, a waste water delivery pump 9, a filter cloth regeneration washing pump 4, and a feeding chute 14. The filter 1 is matched with the vacuum pump 3, and the filter The machine 1 is connected with the filter cloth regeneration washing pump and the waste water conveying pump 9 respectively through the washing circulating water tank 2, and the filter 1 is provided with a feeding chute 14, and the feeding chute 14 is connected with the phosphogypsum raw material conveying belt 6;

[0020] The neutralization device consists of a feed chute 16, a driving device 17, a neutralization mixing agitator 5 and a cylinder 18. The neutralization mixing agitator 5 is connected to the lime silo 12 through a lime conveying belt 10, and the phosphogy...

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Abstract

The present invention discloses a phosphogypsum purification and neutralization apparatus. The phosphogypsum purification and neutralization apparatus comprises a purification device and a neutralization device. The purification device comprises a phosphogypsum feeding pipeline (15), a turntable filter (1), a washing and cycling water tank (2), a vacuum pump (3), a wastewater conveying pump (9), a filter cloth regenerating and washing pump (4) and a material placing chute (14). The neutralization device comprises a material feeding chute (16), a drive device (17), a neutralizing and mixing stirrer (5) and a cylinder (18). The neutralizing and mixing stirrer (5) is connected with a lime bin (12) through a lime conveying belt, and is connected with the material placing chute (14) through a phosphogypsum material conveying belt (6). An outlet of the neutralizing and mixing stirrer (5) is connected with a phosphogypsum product conveying belt (11). With the present invention, the phosphogypsum produced through a wet-process phosphoric acid apparatus can be recovered and utilized so as to provide great economic benefits.

Description

technical field [0001] The invention relates to a purification and neutralization device, in particular to a phosphogypsum purification and neutralization device. Background technique [0002] Phosphogypsum is mainly produced in the solid waste discharged during the production process of wet-process phosphoric acid plant. Since the phosphogypsum produced by wet-process phosphoric acid plant contains various impurities such as unwashed phosphoric acid, fluosilicic acid and organic matter, currently phosphogypsum bricks, In addition to the use of cement retarder as a raw material, the phosphogypsum produced by the wet-process phosphoric acid plant is difficult to recycle in the plasterboard construction industry, and the recycling rate of phosphogypsum is low. The current treatment method is to use a slurry pump to beat it to the phosphogypsum slag yard for stacking, which will continuously increase the storage pressure of the slag yard and cause environmental pollution. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B11/26
Inventor PAN ZHIYUNZHAO BANGJIEHUANG JINYANG YIZHANG TAORAO YISHENGZHANG RUIWANG ZONGLUNLI YONGSHULUO GUOKUAN
Owner WENGFU (GRP) CO LTD
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