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Salt gypsum and salty mud solid waste harmless treatment process

A technology of harmless treatment and salt gypsum, applied in the field of salt gypsum treatment, can solve the problems of difficult reuse of salt gypsum and impact on the environment, and achieve the effect of improving enthusiasm and increasing income

Pending Publication Date: 2021-10-01
中国平煤神马集团联合盐化有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that salt gypsum is difficult to reuse in the prior art, and proposes a harmless treatment process for salt gypsum and salt mud solid waste. The salt gypsum is mixed with water, and the salt is removed by pressing. The waste liquid is formed into salt mud through the thickener, and the salt mud is squeezed again to maximize the utilization of salt gypsum and avoid affecting the environment

Method used

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  • Salt gypsum and salty mud solid waste harmless treatment process

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Embodiment 1

[0024] refer to figure 1 , an embodiment provided by the present invention: a process for the harmless treatment of salt gypsum and salt mud solid waste, comprising steps:

[0025] S1. Put the salt gypsum into the No. 1 mixing tank, and put the salt mud into the No. 2 mixing tank and No. 3 mixing tank;

[0026] S2. The water in the condensate bucket enters the No. 1 mixing tank, and the salt gypsum and water are stirred together

[0027] Add water to dilute the concentration of sodium chloride;

[0028] S3, the stirred salt gypsum slurry is moved from the No. 1 mixing pool to the No. 2 press

[0029] The press presses the gypsum into a gypsum cake, squeezes out the water, and reduces the salt content;

[0030] S4, the No. 2 press discharges the gypsum after pressing, and the waste residue and waste liquid enter the No. 1 thickener;

[0031] S5. The concentrated waste liquid is transferred from the No. 1 thickener to the No. 2 thickener;

[0032] S6. The salt mud after pre...

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Abstract

The invention discloses a salt gypsum and salty mud solid waste harmless treatment process, and belongs to the technical field of salt gypsum treatment. The process can systematically treat salt gypsum and salty mud generated by a salt factory, the salt content (calculated according to the content of Cl<->) in the raw material salt gypsum is reduced to 1.0% or below and the water content is about 25% through the steps of water adding, stirring, squeezing, water removing and the like, the influence on the environment is reduced to the greatest extent, the sodium chloride content in the salt gypsum is greatly reduced, the gypsum generated after treatment can be reasonably used, and the gypsum and brine generated in the process of treating the salt gypsum and the salty mud increase the income of factories and improve the enthusiasm of treating the salt gypsum and the salty mud.

Description

technical field [0001] The invention relates to the technical field of salt gypsum treatment, in particular to a process for harmless treatment of salt gypsum and salt mud solid waste. Background technique [0002] At present, the salt gypsum produced by the salt factory can only be stacked together. The salt gypsum not only occupies precious land resources, but also causes certain pollution to the surrounding land, groundwater, and air for a long time. [0003] Salt gypsum is a waste residue produced by the salt industry. Because it contains a large amount of sodium chloride, it is difficult to reuse it. Therefore, how to efficiently clean and remove the sodium chloride in the salt gypsum so that the salt gypsum can be reused is an urgent need to solve question. Contents of the invention [0004] The purpose of the present invention is to solve the problem that salt gypsum is difficult to reuse in the prior art, and proposes a harmless treatment process for salt gypsum a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F11/46C01D3/06B09B3/00B09B5/00
CPCC01F11/468C01D3/06B09B3/00B09B5/00C01P2006/80
Inventor 梁五星李新奇史永飞张俊飞刘寅琴梁飞飞毕文锋续增辉马张彬程功王相如
Owner 中国平煤神马集团联合盐化有限公司
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