Method for producing precipitated barium sulfate and co-producing manganese chloride

A technology for precipitating barium sulfate and manganese chloride, which is applied in the direction of manganese halide, calcium/strontium/barium sulfate, etc., can solve the problems of low added value and economic benefits of products, high impurity content of products, complicated process flow, etc., and achieve cost Low cost, reduced product cost, rich raw material resources
CN104843760AActive Publication Date: 2015-08-19河北日新化工有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
河北日新化工有限公司
Publication Date
2015-08-19

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Abstract

The invention discloses a method for producing precipitated barium sulfate and co-producing manganese chloride. The method comprises the following steps: A, preparing a barium chloride solution; B, preparing a manganese sulfate solution; C, dipping the manganese sulfate solution prepared by the step B into the barium chloride solution prepared by the step A to perform replacement reaction; D, filtering the product after performing the replacement reaction by the step C, and respectively collecting filtrate and filter cakes; E, performing SO4<2-> decontamination on the filtrate collected by the step D, filtering the decontaminated filtrate, and distilling to obtain manganese chloride; F, rinsing the filter cakes collected by the step D till no chloride ion, baking the rinsed filter cakes in an oven, grinding and sieving to obtain barium sulfate. When precipitated barium sulfate is prepared, simultaneously a byproduct, namely manganese chloride is recovered. The byproduct is high in added value, the utilization rate of the energy is effectively increased, and relatively high economical benefits can be obtained.
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Description

technical field

[0001] The invention belongs to the technical field of filler preparation, in particular to a method for producing precipitated barium sulfate and co-producing manganese chloride. Background technique

[0002] Precipitated barium sulfate, as a high-quality filler and white pigment, is widely used in rubber, plastics, paint, ink, paper, textile, ceramics, medicine and other industries. The traditional production method of barium sulfate is Glauber's salt-black ash method, which uses barite as raw material, reduces and roasts with coal powder, and then reacts with sodium sulfate to produce barium sulfate. Because of the high sulfur content in the product and the large particle size and wide particle size distribution, its application range is limited.

[0003] The preparation of precipitated barium sulfate with barium chloride as a raw material has been extensively studied by researchers, among which the process of preparing precipitated barium sulfate by-prod...

Claims

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