Strontium-barium salt continuous leaching and deslagging production system and production process

Abstract

The invention discloses a strontium-barium salt continuous leaching and deslagging production system, which comprises a ball mill, leaching tanks, a vacuum belt type pumping filter and the like and realizes continuous leaching and deslagging of strontium-barium salt. The invention also discloses a strontium-barium salt continuous leaching and deslagging production process, specifically, a roastedmaterial is added into a recovered strontium-barium salt solution, then grinding is carried out in a ball mill, and a 1# leaching tank and a 2# leaching tank are employed to leach the ground materialstwice, thus solving the severe factors of high temperature, much dust, much water mist and the like at a leaching station; the leached materials are filtered on the vacuum belt type pumping filter interms of a front section and a back section, and a high-concentration strontium-barium salt solution and a low-concentration strontium-barium salt solution with stable concentration can be obtained respectively, and the brine of low-halogen pool is added at the latter half section of the vacuum belt type pumping filter for washing, thus improving the filtering effect, effectively recovering strontium and barium elements, reducing waste, improving the post safety and environmental protection, and eliminating the safety and environmental protection hidden danger of an overall plant area.

Description

technical field [0001] The invention belongs to the technical field of chemical production, and in particular relates to a continuous leaching and slag removal production system and production process of strontium barium salt. Background technique [0002] In the industry of strontium carbonate and barium carbonate, at present, most of them adopt the carbon reduction method to produce strontium carbonate and barium carbonate, and the reduction method must be reduced by kiln roasting. The clinker formed after the raw materials are roasted and reduced in the rotary kiln (a solid mixture with a strontium sulfide / barium sulfide content of 40% to 70%) has a residual temperature of about 800°C. Usually, the clinker is intermittently separated by driving Add in the leaching tank, and finally add water to the leaching tank several times for leaching to obtain a strontium sulfide / barium sulfide solution (a solution with a strontium sulfide content of 55-75 g / L, and a barium sulfide c...

AI Technical Summary

Problems solved by technology

[0003] 1. During the discharge process of the rotary kiln, the hopper needs to be used to shuttle back and forth between the rotary kiln and the leaching tank. During this process, not only will it radiate a lot of heat to the environment, which will cause fake and inferior effects on the operating environment, but also need to frequently move the clinker bucket, the workload of the operators is heavy, which bury a big safety hazard

[0004] 2. There is a lot of clinker added to the leaching tank during each leaching, and the heat generated is large. In the process of concentrated water leaching, a large amount of water vapor will be generated, followed by a large amount of dust, and cooked Scattering of sulfur dioxide gas in the material, if the water is added too fast, there will be a phenomenon of material spraying

A large amount of water vapor, dust and sulfur dioxide produced in this process will have a bad impact on the working environment, cause serious corrosion to the leaching room frame, and cause great damage to the health of workers, and there are great safety and environmental protection hazards

[0005] 3. Due to the intermittent leaching, the concentration of the leached strontium sulfide / barium sulfide solution is unstable, which directly causes the instability of subsequent reactions and product quality

Strontium slag / barium slag with high water content will produce a large amount of infiltration water after entering the slag yard. The recovery and treatment of a large amount of infiltration water is costly and difficult, and will increase the great hidden danger to the ecological environment around the slag yard.

[0007] 5. Strontium slag also contains a large amount of strontium sulfide / barium sulfide solution, which cannot be effectively used as waste water, resulting in waste of strontium and barium elements

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