Barium chloride production technology

A production process, barium chloride technology, applied in the direction of calcium/strontium/barium chloride, calcium/strontium/barium halide, etc., can solve the problem that impurities are difficult to completely remove, do not meet the needs of large-scale industries, and impurities are easy to enter, etc. problems, to achieve the effect of reducing pollution and waste of resources, adapting to large-scale industrial production, and low impurity content in products

Inactive Publication Date: 2010-02-24
重庆洋铭化工产品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. Impurities are difficult to completely remove
Because its production process is completely open, impurities are easy to enter and entrain, and it is difficult to completely remove them after repeated recrystallization
[0005] 2. High energy consumption
Since its production process requires 4 times of crystallization, its 4 times of crystallization cooling p

Method used

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  • Barium chloride production technology

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0029] Example 1: According to the weight percentage of the barium carbonate contained in the asperite containing 65% by weight, the asperite: hydrochloric acid: water: hydrogen peroxide is fed into the reactor 2 at a uniform rate and the mixture 1 of hydrochloric acid: water: The weight percentage concentration is 30-32%, and the weight percentage concentration of hydrogen peroxide is ≥29%. Free sulfur (S) and iron (Fe) react with hydrogen peroxide to form a precipitate. After the reaction no carbon dioxide is released, centrifuge for 4 The filter residue, the filtrate is a hydrated barium chloride raw material liquid, the released carbon dioxide is recovered and purified through outlet 3 to produce barium carbonate, and the filter residue is used as a cement additive; the raw material liquid is fed into the crystallization kettle 21 through the raw material pump 5, and the electric heating temperature control device 13 heats and controls Keep the temperature in the crystalliza...

Example Embodiment

[0039] Example 3: Repeat Example 1 according to the same steps described above, but with 50% barium carbonate contained in asperite, mixing asperite: hydrochloric acid: water: hydrogen peroxide in a ratio of 1.3:0.37:1:0.1 and inputting it into the reaction at a constant rate In kettle 2, a chemical reaction occurs. The obtained product barium chloride is the same as in Example 1.

Example Embodiment

[0040] Example 4: Repeat Example 1 according to the same steps as described above, but the asperite contains barium carbonate based on 70% by weight, and the asperite: hydrochloric acid: water: hydrogen peroxide is mixed at a ratio of 0.93:0.37:1:0.1 and fed into the reaction at a constant speed In kettle 2, a chemical reaction occurs. The obtained product barium chloride is the same as in Example 1.

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Abstract

The invention discloses a technology for producing barium chloride by the witherite containing barium carbonate, which mainly comprises steps as follows: sulfur iron impurities are decomposed and oxidated to remove and the hydrated barium salt raw material liquid is prepared; the raw material liquid is electrically heated and concentrated in vacuum, which is driven by an axial flow pump, the solute is thermally crystallized to form the hydrated barium chloride dihydrate saturated crystalline; the crystallized hydrate is cooled to produce the serial barium salt products, wherein the vacuum heating condensation crystallization is a continuous production process; the whole technological process is implemented in the closed state; the by-products could be recycled; the crystallisation processis completed at one time and the production process is continuous. The products manufactured in the technological process has low impurity content, saves energy, is adaptive to the large-scale industrialization production and reduces the pollution and resource waste to a large extent.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a production process for producing barium chloride from barium carbonate. Background technique [0002] At present, there are many ways to produce barium chloride, mainly using barite as raw material, such as reducing and melting barite and coal powder, then reacting with hydrochloric acid to produce barium chloride, and using barite as raw material , with coal powder and calcium water for reduction melting, leaching, desulfurization and other treatments to produce barium chloride. The above-mentioned method for producing barium chloride not only has high energy consumption and high labor intensity, but also the treatment of the three wastes is not easy, causing pollution to the environment. [0003] Another method is to produce barium chloride with witherite as raw material. The main component of witherite is barium carbonate. The reaction of witherite and hydrochloric acid to...

Claims

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Application Information

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IPC IPC(8): C01F11/28
Inventor 赖成文李用城许章道冉明才
Owner 重庆洋铭化工产品有限公司
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