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Method for preparing strontium carbonate

A strontium carbonate, crude technology, applied in the direction of calcium carbonate/strontium/barium, etc., can solve the problems of increasing the manufacturing cost of strontium carbonate, consuming large and high-quality coal, etc., and achieve the goal of reducing production and manufacturing costs, saving manpower and material resources, and saving equipment Effect

Inactive Publication Date: 2008-12-10
SHIJIAZHUANG ZHENGDING JINSHI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process produces CO 2 The gas process not only needs to configure a dedicated lime kiln, but also consumes a large amount of high-quality coal, which greatly increases the manufacturing cost of strontium carbonate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] a. After mixing 100 tons of lapis lazuli and 36 tons of pulverized coal, put them into a rotary furnace, and roast them for 1 hour at 1000° C. to obtain 0.75 tons of crude strontium sulfide;

[0021] b. Send strontium sulfide into the leaching tank with a trolley, add 6 times of water, and leaching twice, each time for 1 hour; combine the 2 times of leaching liquid, and transport it to a clarification tank for clarification for 25 hours;

[0022] c. Convert the CO in the waste gas of fertilizer production 2 Pass into the desulfurization tower for desulfurization treatment;

[0023] d, the clarified leaching solution in the b step is passed into the carbonization tower, and the treated CO in the c step is 2 It is passed into the carbonization tower together for carbonization reaction; among them, CO 2 The concentration is controlled at 30-40%;

[0024] E, 50 tons of strontium carbonate slurry obtained in step d is passed into a desulfurization tank, and an appropriate...

Embodiment 2

[0028] a. After mixing 100 tons of lapis lazuli and 3 tons of pulverized coal, put them into a rotary furnace, and roast them for 0.5 hours at 850°C to obtain crude strontium sulfide;

[0029] b. Use a trolley to send strontium sulfide into the leaching tank, add 5 times of water, and leaching 3 times, 1 hour each time; combine the 1st and 2nd leaching liquids, and transport them to a clarification tank for 30 hours; the third time The leaching solution is used as the first leaching;

[0030] c. Convert the CO in the waste gas of fertilizer production 2 Pass into the desulfurization tower for desulfurization treatment;

[0031] d, the clarified leaching solution in the b step is passed into the carbonization tower, and the treated CO in the c step is 2 It is passed into the carbonization tower together for carbonization reaction; among them, CO 2 The concentration is controlled at 30-40%;

[0032] E, the strontium carbonate slurry that d step gained is passed into the desu...

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Abstract

The invention discloses a method for manufacturing strontium carbonate, comprising the following steps: a. celestite and coal dust are roasted under the condition of a temperature between 850 and 1,000 DEG C; b. rough strontium carbonate is added with water and leached for 2 to 3 times, with 0.5 to 1 hour for each time, and then clarified; c. CO2 in industrial waste gas enters into a thionizer for desulfurization treatment; d. a clear leaching solution in the step b enters into a carbonizer, and the CO2 after the treatment in the step c enters into the carbonizer simultaneously for carbonization reaction; e. strontium carbonate serum obtained in the step d is added with alkali for desulfurization and dehydration, and strontium cakes are obtained; and f. deferrization of the strontium cakes is performed through a magnetic roller. The method not only saves the equipment required for manufacturing the CO2 but also greatly saves the human and material resources. More important, the method changes the waste into the valuable, thereby not only reducing the production cost but also simultaneously avoiding exhaust emission of other chemical enterprises and integrally improving the living environment of people.

Description

technical field [0001] The invention relates to a production process of inorganic salts, in particular to a method for producing strontium carbonate. Background technique [0002] Strontium carbonate is an important inorganic salt, which is widely used in light industry, chemical industry, national defense, electronics industry and other industries. In recent years, with the rapid development of industries such as color and electromagnetic materials, the market demand for strontium carbonate is increasing year by year. At present, strontium carbonate is mostly produced by double decomposition method and carbon reduction method at home and abroad. The carbon reduction method is widely used due to its short production process, simple operation, and relatively low production cost. The traditional carbon reduction method is used to produce strontium carbonate. The process is usually to mix celestite and coal powder or coke in proportion, then roast and reduce it at high temper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F11/18
Inventor 仝六斗
Owner SHIJIAZHUANG ZHENGDING JINSHI CHEM
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