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A method of processing zinc-containing raw ore with barium zincate synthesis route

A synthesis approach, barium zincate technology, applied in the direction of zinc compounds, chemical instruments and methods, process efficiency improvement, etc., can solve the problem of the inability to economically and effectively utilize low-grade zinc-containing raw ore, and the unreasonable utilization of low-grade zinc-containing raw ore. Satisfaction, the production of barium zincate and barium zincate, etc., to avoid the pressure of water treatment, avoid a large amount of co-precipitation of impurities, and achieve the effect of high recovery rate

Active Publication Date: 2020-12-11
CHONGQING DONGQUN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the existing technology is still unsatisfactory for the utilization of low-grade zinc-containing raw ore, and cannot economically and effectively utilize low-grade zinc-containing raw ore to produce the required zinc-containing products, especially the industrial production of zinc by using low-grade zinc raw materials. Related products of barium acid and barium zincate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0115] In a zinc mine in Yunnan, the zinc content is 5.6%, and the oxidation rate of the raw ore is 96.3%. The main form of zinc in this mine is zinc carbonate.

[0116] Get 300 grams of zinc-containing raw ore, put into 900 milliliters of ammonia-ammonium bicarbonate mixed solution (10% of total ammonia mass concentration, 3% of carbonate root mass concentration) and carry out stirring and leaching, the leaching temperature is normal temperature, and the stirring time is 2 hours, Then filter, the filtered liquid contains 1.632% zinc (calculated in zinc oxide equivalent), the mass concentration of carbonate in the liquid is 4.23%, and the increased part is brought in by zinc carbonate in the raw ore. According to the test data, the recovery rate of soluble zinc in the raw ore during the leaching process is 90.79%, and the recovery rate of total zinc is 87.43%.

[0117] Purify the zinc ammonia complex solution obtained by filtering.

[0118] Take 600 ml of zinc-ammonia complex...

Embodiment 2

[0121] In a zinc mine in Chongqing, the zinc content is 4.7%, and the oxidation rate of the raw ore is 95.52%. The main form of zinc in this mine is zinc silicate.

[0122] Get 300 grams of zinc-containing raw ore, put into 900 milliliters of ammonia-ammonium bicarbonate mixed solution (10% of total ammonia mass concentration, 3% of carbonate root mass concentration) and carry out stirring and leaching, the leaching temperature is normal temperature, and the stirring time is 2 hours, Then filter, the filtered liquid contains 1.367% zinc (calculated in zinc oxide equivalent), the mass concentration of carbonate in the liquid is 3.54%, and the increased part is brought in by zinc carbonate in the raw ore. According to the inspection data, the recovery rate of soluble zinc in the raw ore during the leaching process is 91.35%, and the recovery rate of total zinc is 87.26%.

[0123] Purify the zinc ammonia complex solution obtained by filtering.

[0124] Take 600 ml of zinc-ammoni...

Embodiment 3

[0127] The difference from Example 1 is that in Example 3, calcium oxide precipitated carbonate is added to the zinc-ammonia complex solution obtained by leaching and filtered, and 500 milliliters of the filtered liquid is taken, and 3 mg of dodecylbenzenesulfonate is added first. Sodium acid, then add 6.6 grams of barium oxide for the synthesis of barium zincate. All the other steps and reagent consumption of Example 3 are the same as in Example 1.

[0128] Sampling analysis was carried out on the obtained final product, and the content of barium zincate in the solid was checked to be 99.53%, and the average particle diameter was 54.1nm.

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Abstract

The invention relates to a method for treating zinc-contained raw ore through a barium zincate synthetic route. The method comprises the steps of digestion, optional purification, decarbonization, barium zincate synthesis, optional rinsing, drying or burning. The barium zincate synthesis under the zinc ammonia environment is achieved at first time, the reaction selectivity of synthesizing zinc ammonia complex-ions into the barium zincate is high, the reaction condition is mild, simplicity and rapidness are achieved, the recycling rate is high, obtained barium zincate can directly serve as a product, and the barium zincate can serve as an intermediate to prepare other products.

Description

technical field [0001] The invention belongs to the technical field of inorganic chemical industry, relates to the resource utilization of low-grade zinc oxide raw ore, and particularly relates to a method for preparing barium zincate from low-grade zinc oxide raw ore, or further preparing zinc oxide through the barium zincate synthesis step. Background technique [0002] Barium zincate is a new type of material, which has its applications in the fields of special ceramics, etc., but the existing preparation methods are limited to small-scale trial production with high-purity raw materials under laboratory conditions, lacking industrially stable and reliable preparation methods, especially There is a lack of methods to prepare barium zincate from raw materials with low zinc content, or to obtain other subsequent products via barium zincate. [0003] On the other hand, my country's zinc production and consumption both rank first in the world, and a large amount of zinc raw ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B3/14C22B3/44C22B19/20C01G9/00
CPCC01G9/00C22B3/14C22B3/44C22B19/24Y02P10/20
Inventor 岳辉伟李世川龙忠祥蒋涛刘权锋
Owner CHONGQING DONGQUN TECH CO LTD
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