Continuous carbonization reaction system and production process for producing high-purity large-particle-size strontium carbonate

Abstract

The invention discloses a continuous carbonization reaction system and production process for producing high-purity large-particle-size strontium carbonate. The production process comprises the following steps of: carrying out high-temperature reduction on celestite to obtain strontium sulfide; soaking the strontium sulfide in hot water; performing filtering, impurity removing, cooling and crystallizing to obtain strontium hydroxide crystals; dissolving the strontium hydroxide crystals to remove impurities, thereby obtaining a strontium hydroxide reaction solution; introducing the strontium hydroxide reaction solution into a continuous carbonization reaction tower which is provided with three reaction towers communicated with one another; introducing the strontium hydroxide reaction solution and carbon dioxide gas into the reaction towers; and keeping the liquid level of each reaction tower stable, thereby obtaining the high-purity large-particle-size strontium carbonate, The production process of the invention is simple; a continuous production mode is adopted; the strontium sulfide is directly used for producing the large-particle-size strontium carbonate, and barium hydroxide can also be used for producing barium carbonate; and high stability of the liquid level in the reaction process is guaranteed by controlling the concentration and impurity content of the reaction solution, and the produced high-purity strontium carbonate or barium carbonate product is large in particle size and stable in quality; large-scale production is facilitated.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a continuous carbonization reaction system and a production process for producing high-purity and large-diameter strontium carbonate. Background technique [0002] The traditional strontium carbonate production process is generally a three-tower series reaction. The fresh strontium sulfide solution passes through the first carbonization tower and the second carbonization tower for pre-carbonization reaction, and then enters the main carbonization tower. Carbon dioxide is added through the main carbonization tower, carbonized The reaction mixed gas enters the second carbonization tower and the first carbonization tower in turn. When the main carbonization tower reaches the end point, the carbon dioxide is stopped, and the strontium slurry in the tower is discharged into the strontium slurry tank, and fresh strontium sulfide solution is pumped in again. , and then us...

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Problems solved by technology

There are two main problems in this process: one is that due to intermittent and intermittent reactions, the flow rate and concentration of hydrogen sulfide fluctuate relatively greatly, which causes troubles for subsequent production; uneven

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