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Method for recovering celestite from waste residue in strontium carbonate production by celestite back salt method

A technology of lapis lazuli and strontium carbonate, which is applied in the removal of solid waste, calcium/strontium/barium sulfate, etc., can solve the problems of waste of resources, low utilization rate of lapis lazuli resources, environmental pollution, etc. Low cost and the effect of eliminating environmental pollution

Active Publication Date: 2011-05-18
重庆新申世纪新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a simple and effective method for recovering lapis lazuli from the waste residue of strontium carbonate produced by lapis lazuli black ash method in order to solve environmental pollution and resource waste The problem to be solved further is how to rationally optimize the process parameters, reduce the impurity content in the obtained celestite, and at the same time increase the yield of celestite and select the grade of celestite to the greatest extent

Method used

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  • Method for recovering celestite from waste residue in strontium carbonate production by celestite back salt method
  • Method for recovering celestite from waste residue in strontium carbonate production by celestite back salt method
  • Method for recovering celestite from waste residue in strontium carbonate production by celestite back salt method

Examples

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Embodiment 1

[0029] Example 1. refer to figure 1 , the method of recovering celestite from the waste slag of strontium carbonate produced by celestite black ash method, the waste slag containing 25% strontium sulfate is crushed to obtain waste slag powder; the particle size of waste slag crushing is required to be 120 mesh; 35% slurry; using a shaking table at a stroke rate of 300 times / min and a stroke of 13mm; when the flushing volume is 5 times the amount of slurry; select light components and heavy components in the slurry; dehydrate the heavy components , and dried to obtain lapis lazuli powder, the experimental results showed that the yield was 89.8%, and the grade was 85.0%.

Embodiment 2

[0030] Example 2. refer to figure 1 , the method of recovering celestite from the waste slag of strontium carbonate produced by celestite black ash method, the waste slag containing 25% strontium sulfate is crushed to obtain waste slag powder; the particle size of waste slag crushing is required to be 120 mesh; 40% slurry; use a shaker at 300 strokes per minute, stroke 13mm; when the amount of flushing water is 5 times the amount of slurry; select light components and heavy components in the slurry; dehydrate the heavy components , and dried to obtain lapis lazuli powder, the experimental results showed that the yield was 90.8%, and the grade was 84.6.0%.

Embodiment 3

[0031] Example 3. refer to figure 1 , the method of recovering celestite from the waste slag of strontium carbonate produced by celestite black ash method, the waste slag containing 25% strontium sulfate is crushed to obtain waste slag powder; the particle size of waste slag crushing is required to be 120 mesh; 38% slurry; using a shaker at a stroke rate of 300 times per minute and a stroke of 13 mm; when the flushing volume is 5 times the amount of slurry; select light components and heavy components in the slurry; dehydrate the heavy components , and dried to obtain lapis lazuli powder, the experimental results showed that the yield was 90.4%, and the grade was 84.4.0%.

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Abstract

The invention discloses a method for recovering celestite from waste residue in strontium carbonate production by celestite back salt method, comprising the following steps: 1) crashing: crashing the waste residue to prepare waste residue powder; 2) sizing: mixing the waste residue powder with water to form residue slurry with a proper concentration; 3) reelecting: selecting unreacted celestite in the residue slurry by a shaker; and 4) dehydrating: dehydrating separated heavy and light components, wherein the heavy component is the celestite. In the invention, the unreacted celestite during the process of producing the strontium carbonate is recovered with a reelection method, thereby improving the resource utilization of strontium ore; and the method is simple, and the cost is low.

Description

technical field [0001] The invention relates to a method for processing the waste residue produced by the lapis lazuli black ash method to produce strontium carbonate, in particular to a method for recovering unreacted lapis lazuli from the waste residue produced by the lapis lazuli strontium carbonate. Background technique [0002] Strontium carbonate chemical formula SrCO3, molecular weight 147.63. It is a good material for making electronic components, spectral reagents, and rainbow glass. In the prior art, the production of strontium carbonate by lapis lazuli black ash method is a main production method of industrial strontium carbonate. In the process of producing strontium carbonate by black ash method, the conversion rate of strontium sulfate in the reduction reaction of lapis lazuli and carbon is generally between Between 50-80%, there is still a large amount of lapis lazuli not participating in the reaction in the leaching waste residue. At present, this part of la...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F11/46B09B3/00
Inventor 申静何从林
Owner 重庆新申世纪新材料科技有限公司
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