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Method and technology of producing precipitated barium sulphate using white carbon black waste liquor

A technology for precipitating barium sulfate and white carbon black, applied in the direction of calcium/strontium/barium sulfate, alkali metal sulfide/polysulfide, etc., can solve problems such as waste liquid pollution, save water resources, reduce production costs, The effect of eliminating impurity contamination

Inactive Publication Date: 2008-07-16
ZHUZHOU XINGLONG CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The object of the present invention is to provide a kind of novel precipitated barium sulfate production method and technology for the deficiency of existing precipitated barium sulfate production process, this production method and technology can not only effectively improve the deficiency of existing precipitated barium sulfate production method and technology, and Can effectively solve the problem of waste liquid pollution in the production of white carbon black

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  • Method and technology of producing precipitated barium sulphate using white carbon black waste liquor
  • Method and technology of producing precipitated barium sulphate using white carbon black waste liquor

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Embodiment 1

[0013] Using the white carbon black waste liquid in the production of hydrated precipitated silica, the white carbon black waste liquid is adjusted-removing impurities-filtered-concentrated so that the white carbon black waste liquid becomes only containing sodium sulfate (Na 2 SO 4 )The solution. Precipitated barium sulfate was prepared by white carbon black waste liquor-black ash method. Wherein said white carbon black waste liquid - black ash method is: the white carbon black waste liquid is adjusted through adjustment--removal of impurities--filter--concentration, and then mixed with black ash leaching liquid to carry out metathesis reaction and solidification After liquid separation, precipitated barium sulfate and precipitated sodium sulfide were obtained. The production reaction formula is BaS+Na 2 SO 4 (concentration about 20%)-BaSO 4 ↓+Na 2 S. The specific process is:

[0014] 1. Put the white carbon black waste liquid in the adjustment tank and use OH - (0.1...

Embodiment 2

[0022] Using the white carbon black waste liquid in the production of hydrated precipitated silica, the white carbon black waste liquid is adjusted-removing impurities-filtered-concentrated so that the white carbon black waste liquid becomes only containing sodium sulfate (Na 2 SO 4 )The solution. Precipitated barium sulfate was prepared by white carbon black waste liquor-black ash method. Wherein said white carbon black waste liquid - black ash method is: the white carbon black waste liquid is adjusted through adjustment--removal of impurities--filter--concentration, and then mixed with black ash leaching liquid to carry out metathesis reaction and solidification After liquid separation, precipitated barium sulfate and precipitated sodium sulfide were obtained. The production reaction formula is BaS+Na 2 SO 4 (concentration about 20%)-BaSO 4 ↓+Na 2 S. The specific process is:

[0023] 1. Prepare the black ash immersion solution from the barite according to the convent...

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Abstract

A process for preparing precipitated barium sulfate from the white carbon black sewage is based on BaS+Na2SO4-BaSO4 Na2S, includes such steps as regulating pH value, removing impurities, filtering, concentrating, mixing with the impregnating liquid of black powder, displacement reaction, and solid-liquid separation to obtain said product and liquid-stat Na2S.

Description

technical field [0001] The present invention relates to a kind of production method of precipitated barium sulfate, particularly refer to the method for producing precipitated barium sulfate by utilizing white carbon black production waste liquid, the present invention also relates to a kind of production technology of precipitated barium sulfate, particularly refer to a kind of using white carbon Process for producing precipitated barium sulfate from black waste liquor. Background technique [0002] At present, most of the domestic production of precipitated barium sulfate adopts Glauber's salt-black ash method (also known as smelting method) or synthesis method. Now most of them use Glauber's salt-black ash method to produce precipitated barium sulfate. This method uses natural barite ore and Glauber's salt as raw materials. Firstly, the barite is crushed, then mixed with coal powder, calcined and reduced to form sulfide. Barium, i.e. black ash (about 60% BaS content), th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01F11/46C01B17/22
Inventor 胡智勇何智伟
Owner ZHUZHOU XINGLONG CHEM IND
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