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Method for preparing micro fine precipitated barium sulfate and co-producing hydrochloric acid by using barium slag

A technology for precipitating barium sulfate and slag, applied in the direction of calcium/strontium/barium sulfate, chlorine/hydrogen chloride purification, chlorine/hydrogen chloride, etc., can solve the problems of high cost, huge production equipment, complicated production process, etc. The effect of low equipment cost and high economic value

Inactive Publication Date: 2010-10-06
王嘉兴
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, the prior art still has the disadvantages of complex production process, huge production equipment, and high cost, and there is no relevant report on the method of preparing fine precipitated barium sulfate with barium slag to co-produce hydrochloric acid at present.

Method used

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  • Method for preparing micro fine precipitated barium sulfate and co-producing hydrochloric acid by using barium slag
  • Method for preparing micro fine precipitated barium sulfate and co-producing hydrochloric acid by using barium slag

Examples

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Embodiment 1

[0032] A method for preparing finely precipitated barium sulfate and co-producing hydrochloric acid with barium slag, wherein the barium slag is acidified, recovered and synthesized to produce finely precipitated barium sulfate, and hydrochloric acid product is co-produced at the same time;

[0033] The acidizing process is as follows: first inject 800 kilograms of barium slag and hydrochloric acid into acid leaching tank 1 through barium slag feeding line 9 and hydrochloric acid feeding line 10 respectively, and barium slag and hydrochloric acid are calculated as pure substances in the acid leaching tank The mass ratio is 1: 0.13, after reacting for 9 hours, use the first suction filtration pump 2 suction filtration again, the filtrate after the suction filtration is 341.92 kilograms of chlorides based on barium;

[0034] The recovery process is as follows: first the filter residue after suction filtration in the acidification process is moved into the recovery device, and the...

Embodiment 2

[0037] A method for preparing finely precipitated barium sulfate and co-producing hydrochloric acid with barium slag, wherein the barium slag is acidified, recovered and synthesized to produce finely precipitated barium sulfate, and hydrochloric acid product is co-produced at the same time;

[0038] The acidizing process is as follows: first inject 800 kilograms of barium slag and hydrochloric acid into acid leaching tank 1 through barium slag feeding line 9 and hydrochloric acid feeding line 10 respectively, and barium slag and hydrochloric acid are calculated as pure substances in the acid leaching tank The mass ratio is 1: 0.35, while stirring, the rotating speed of the stirrer is 280 rev / min, after reacting for 7 hours, then use the first suction filtration pump 2 for suction filtration, the filtrate after suction filtration is the chloride based on barium 797.8 kg;

[0039] The recovery process is as follows: the filter residue after suction filtration in the acidificatio...

Embodiment 3

[0042] A method for preparing finely precipitated barium sulfate and co-producing hydrochloric acid with barium slag, wherein the barium slag is acidified, recovered and synthesized to produce finely precipitated barium sulfate, and hydrochloric acid product is co-produced at the same time;

[0043] The acidizing process is as follows: first inject 800 kilograms of barium slag and hydrochloric acid into acid leaching tank 1 through barium slag feeding line 9 and hydrochloric acid feeding line 10 respectively, and barium slag and hydrochloric acid are calculated as pure substances in the acid leaching tank The mass ratio is 1: 0.53, after reacting for 9 hours, use the first suction filtration pump 2 suction filtration again, the filtrate after the suction filtration is 844.68 kilograms of chlorides based on barium;

[0044] The recovery process is as follows: the filter residue after suction filtration in the acidification process is first moved into the recovery device, and then ...

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Abstract

The invention relates to the technical field of chemical waste residue treatment, in particular to a method for preparing micro fine precipitated barium sulfate and co-producing hydrochloric acid by using barium slag. The invention adopts the main technical scheme that the method comprises the following steps of: reacting the barium slag with hydrochloric acid to obtain a chloride mainly containing barium salt, reacting filtered clear liquid with a little amount of barium sulfate and reclaiming chlorine radical to obtain fully reacted barium chloride, and finally reacting the barium chloride with sulfuric acid to obtain the micro fine precipitated barium sulfate. The generation process and equipment thereof are simple and easy to operate, can eliminate waste ore garbage, generate the micro fine precipitated barium sulfate and can co-produce hydrochloric acid; and the method has low generation cost and can create high economic value.

Description

technical field [0001] The invention relates to the technical field of chemical waste slag treatment, in particular to a method for preparing finely precipitated barium sulfate and co-producing hydrochloric acid with barium slag. Background technique [0002] Barite is a non-renewable resource and one of my country's export-oriented mineral products. It is widely used as a weighting agent for oil and natural gas drilling mud, and its consumption in barium chemicals and fillers is also increasing year by year. my country's barite resources are quite rich, distributed in 21 provinces (regions) across the country, with a total reserve of 360 million tons of ore, ranking first in the world. Among them, the finely precipitated barium sulfate has the following extensive uses because it is insoluble in water and acid: [0003] Used as raw materials or fillers for paints, inks, plastics, advertising pigments, cosmetics, batteries, rubber products as fillers and reinforcements, poly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F11/46C01B7/07
Inventor 王嘉兴
Owner 王嘉兴
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