Method and system for preparing barium sulfate by using barium slag

A technology of barium sulfate and barium slag, which is applied in the field of comprehensive recycling process system, can solve the problems of polluting the environment, failing to meet environmental protection discharge standards, precipitation and precipitation obstacles, etc., and achieves simple operation, reduced conversion agent consumption, and good detoxification effect

Pending Publication Date: 2019-07-05
长沙中硅环保科技有限公司 +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The presence of polysulfide ions and thiosulfate, on Ba 2+ The precipitation of ions acts as an obstacle, and the Ba in the solution after detoxification 2+ The ion concentration cannot reach the environmental emission standard of <1mg / L
If barium slag is soaked in sulfuric acid solution or hydrochloric acid, H2S gas will be generated immediately, polluting the environment

Method used

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  • Method and system for preparing barium sulfate by using barium slag
  • Method and system for preparing barium sulfate by using barium slag
  • Method and system for preparing barium sulfate by using barium slag

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Embodiment Construction

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0045] Such as Figure 1-Figure 2 Shown, present embodiment provides a kind of method utilizing barium slag to prepare barium sulfate, comprises the following steps:

[0046] S1: Grinding and leaching conversion: the barium slag is measured by the metering and matching system 2, and additive A is added according to 0.4-1 times the weight of the soluble barium salt in the barium slag, and then enters the grinding and leaching conversion system for ...

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Abstract

The invention discloses a method and system for preparing barium sulfate by using barium slag. The method includes a step of grinding, soaking and conversion, a step of gravity flotation, a step of solution impurity removal and recycling, and the like. The system comprises a barium slag feeding system, a grinding, soaking and conversion system, a gravity flotation system, a solution impurity removal and recycling system and a building raw material application system. A cheap converting agent is adopted for grinding, soaking and conversion to convert soluble barium in the barium slag into an insoluble matter so that toxicity of the barium slag is removed, the barium slag becomes a nontoxic building raw material, and a high amount of a BaSO4 product can be recovered. The method and the system have advantages of a short process, simple operation, and capability of being economical, environmentally friendly, clean and efficient, are suitable for industrial production of barium slag detoxification, and accord with resource recycling.

Description

technical field [0001] The invention relates to a process system and method for comprehensive recycling of barium slag produced in the production process of barium carbonate by using barite as raw material, in particular to a method and system for preparing barium sulfate by using barium slag, which belongs to resource recycling and utilization Environmental protection technology field. Background technique [0002] Using barite ore as raw material to prepare barium carbonate production process, including the barite ore is crushed and adopts carbothermal reduction method, and the BaSO 4 Convert into BaS, then add water to the clinker formed by calcination, BaS dissolves into the solution, and filters to obtain the BaS-containing leachate-barium milk, barium milk is carbonized and precipitated to precipitate barium carbonate products, barium carbonate is widely used in metallurgy, chemical industry, building materials, etc. field. After clinker leaching, the slurry is separ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F11/46
CPCC01F11/462C01P2006/80
Inventor 肖喜才刘恩辉
Owner 长沙中硅环保科技有限公司
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