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A kind of beneficiation method of low-grade zinc-containing raw ore

A beneficiation method and low-grade technology, which is applied to the beneficiation of low-grade zinc-containing raw ore, and can be used in the field of beneficiation of low-grade zinc-containing raw ore through the calcium zincate synthesis step, which can solve the problems of low recovery rate of ore dressing, low economic value, and separation effect. To achieve the effect of avoiding environmental pollution, high selectivity, and reducing energy consumption

Active Publication Date: 2022-03-15
CHONGQING DONGQUN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] At present, the beneficiation process of low-grade zinc ore has problems such as high energy consumption, poor separation effect, low beneficiation recovery rate, serious environmental pollution, and low economic value.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0154] Zinc in a zinc mine in Yunnan, the zinc content is 11.67%, the original ore oxidation rate is 95.2%, and the zinc ingredient in this mine is mainly in the form of zinc carbonate.

[0155] Take 300 grams of zinc inereite, add 900 ml of ammonia-carbonant ammonium mixture (total ammonia mass concentration 10%, carbonate mass concentration 5%) to carry out the purification, leaching temperature at normal temperature, stirring time is 2 hours, Then filtration, the zinc quality concentration of zinc in the liquid after filtration of 3.374% (4.2% calculation according to zinc oxide), and the temperature concentration of the carbonate mass concentration in the liquid is 6.21%, and the increased portion is zinc carbonate in the original ore. According to the test data, the recovery rate of the soluble zinc in the original ore is 91.11%, and the total zinc recovery is 86.74%.

[0156] After 600 ml of leaching, the zinc ammonia complexed was filtered, 19.69 g of calcium oxide was adde...

Embodiment 2

[0160] The basic steps are combined with Example 1, but in the final step, calcium carbonate and a mixture of zinc hydroxide (i.e., the first solid) is combined with a mixture of primary zinc-containing calcium, at 105 ° C. Dry, dried mixture was then calcined at 950 ° C for 2 hours to give a mineralized product which contained the main component of zinc oxide and calcium oxide. The mineralized product obtained by calcined was taken out, and the zinc oxide content in the mixed product was 55.2%.

Embodiment 3

[0162] The zinc mine in Chongqing, the zinc content of 12.93%, the original ore oxidation rate was 94.82%, and the zinc ingredient in the mine was mainly existed in zinc silicate.

[0163] Take 300 grams of zinc inereite, add 900 ml of ammonia-carbonant ammonium mixture (total ammonia mass concentration 10%, carbonate mass concentration 6%) to heat stir pose, extract temperature 50 ° C, stirring time 2 hours , Then filtered, after filtration, the zinc quality concentration of zinc in the liquid was 3.681%, and the temperature concentration of the carbonate in the liquid was 6.34%, and the increased portion was zinc carbonate in the original ore. According to the inspection data, the recovery rate of the soluble zinc in the original mine of the leaching process was 90.07%, and the total zinc recovery was 85.41%.

[0164] After 600 ml of extravasation, the zinc ammonia complexed liquid was filtered, and 18.98 grams of hydroxide is added to deposit auxiliary carbonate participating i...

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PUM

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Abstract

A method for beneficiating low-grade zinc-containing ore, in particular to a method for beneficiating low-grade zinc-containing ore through a calcium zincate synthesis step, the method comprising an extraction step, a decarburization precipitation step, a calcium zincate synthesis step, Dry calcination step.

Description

Technical field [0001] The invention belongs to the comprehensive technical field of inorganic chemical and mineralization process involves resource utilization of low-grade zinc-containing inerealite, and more particularly to a mineralized method of low-grade zinc-containing inereal mineral, and more particularly to a low grade of calcium sate. Method for minerall the zinc-containing amorgenation. Background technique [0002] Zinc mineral positions continue to decline is the current situation in many countries in the world, and regional mineral companies. Although China's Zinc Mine is rich in total, the inerey is generally low, and the average zinc product is less than 5%, and the zinc oxide 3% ~ 5% low-grade mining tailings and mineral mining mining are largely stacked. Such lazing, the zinc-resistant zinc, which typically requires appropriate mineralization treatment, which is usually separated from other accompanying minerals or impurities to other accompanying industrial pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B19/02C22B19/20
CPCC22B19/02C22B19/24C22B19/26C22B3/14C22B3/44C22B19/20C22B19/34C01F11/02C01G9/03Y02P10/20
Inventor 岳辉伟李世川龙忠祥蒋涛刘权锋蒋文艺
Owner CHONGQING DONGQUN TECH CO LTD
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