Method for recycling and preparing high-quality zinc oxide from zinc wastes

A zinc oxide and zinc waste technology, applied in the direction of zinc oxide/zinc hydroxide, ferrous oxide, iron oxide/iron hydroxide, etc., can solve the difficulty in improving the leaching rate, increase the difficulty of waste residue treatment, and reduce sales Grade and other issues, to achieve the effect of reducing consumption and process water consumption, improving reuse efficiency, and improving performance balance

Active Publication Date: 2020-01-24
安徽泰龙锌业有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current pyrometallurgical technology is complicated, consumes a lot of energy, and costs are high, which is not directly proportional to the recovery rate. It is difficult to improve the leaching rate in acid zinc smelting, and a large amount of zinc is lost in the leaching slag, which aggravates the treatment of waste slag. difficulty
And the quality of zinc products recovered is poor, which reduces the sales grade

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A method for reclaiming and preparing high-quality zinc oxide from zinc waste, its preferred scheme is, at first, prepare magnetic adsorption material: take by weighing 8.8 grams of ferric chloride, 4.7 grams of zeolite powder successively, place in a beaker, add 60 Milliliter of hydrochloric acid solution with a molar concentration of 7.5 mol / liter, magnetically stirred at 20°C for 30 minutes, added 1.2 milliliters of hydrogen peroxide aqueous solution and 0.4 grams of potassium permanganate to the beaker, and transferred to a water bath, and controlled the temperature at 45 Between -55°C, stir and react for 35 minutes, then add 40 ml of ammonia solution, stir evenly, let it stand for 2 hours and filter, and the solid product obtained is washed twice with deionized water, dried in an oven at 70°C for 4 hours, and then sent to Calcined in a muffle furnace for 3 hours, the calcination temperature is 580°C, and cooled to normal temperature; wherein, the mass concentration ...

Embodiment 2

[0020] A method for reclaiming and preparing high-quality zinc oxide from zinc waste, its preferred scheme is, at first, prepare magnetic adsorption material: successively weigh 8.9 grams of ferric chloride, 4.8 grams of zeolite powder, place them in a beaker, add 65 Milliliter of hydrochloric acid solution with a molar concentration of 7.8 mol / liter, magnetically stirred at 22°C for 35 minutes, added 1.3 milliliters of hydrogen peroxide aqueous solution and 0.45 grams of potassium permanganate to the beaker, and transferred to a water bath, and controlled the temperature at 45 Between -55°C, stir and react for 38 minutes, then add 45 ml of ammonia solution, stir evenly, let it stand for 2.5 hours and filter, and the solid product obtained is washed twice with deionized water, dried in an oven at 75°C for 5 hours, and then sent to Calcined in a muffle furnace for 3.5 hours, the calcination temperature is 590 ° C, and cooled to normal temperature; wherein, the mass concentration...

Embodiment 3

[0026]A method for reclaiming and preparing high-quality zinc oxide from zinc waste materials, its preferred scheme is, at first, prepare magnetic adsorption material: take by weighing 9.0 grams of ferric chloride, 4.9 grams of zeolite powder successively, place in a beaker, add 70 Milliliter of hydrochloric acid solution with a molar concentration of 8.0 mol / L, stirred magnetically for 40 minutes at 24°C, added 1.4 ml of hydrogen peroxide aqueous solution and 0.5 g of potassium permanganate to the beaker, and transferred to a water bath, and controlled the temperature at 45 Between -55°C, stir and react for 40 minutes, then add 50 ml of ammonia solution, stir evenly, let it stand for 3 hours and filter, and the solid product obtained is washed with deionized water for 3 times, dried in an oven at 80°C for 6 hours, and then sent to Put it into a muffle furnace for calcination for 4 hours, the calcination temperature is 600° C., and cool to normal temperature; wherein, the mass ...

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Abstract

The invention relates to the technical field of new material processing, and discloses a method for recycling and preparing high-quality zinc oxide from zinc wastes. Zinc waste components and the separation and recovery principle are researched, so the problems of poor quality and low recovery rate of existing recycled zinc products are solved from internal factors; and the zinc wastes are dissolved through an alkali liquor, a magnetic adsorption material is added into the obtained dissolving solution, and filtration is performed to prepare zinc oxide. The method can remarkably improve the quality of the recycled zinc oxide, reduce energy consumption and save the cost; and the energy consumption of 1 ton of yield in the regenerated zinc oxide production process is only 14-15% of the energyconsumption of primary zinc preparation, so the problems of complexity and high energy consumption of an existing pyrogenic zinc smelting technology and the problems of waste residue treatment difficulty increase, low yield and low quality, caused by loss of a large amount of the zinc element in extraction residues due to difficult increase of the extraction rate of acid process zinc smelting, are solved, and economic benefits and social benefits are remarkably improved.

Description

technical field [0001] The invention belongs to the technical field of new material processing, and in particular relates to a method for recovering and preparing high-quality zinc oxide from zinc waste. Background technique [0002] Zinc is the fourth most "common" metal, after iron, aluminum and copper. However, it is not the most abundant element in the earth's crust (the top few are oxygen, silicon, aluminum, iron, calcium, sodium, potassium, magnesium). The appearance is silver-white, and it has an indelible position in battery manufacturing in modern industry (the surface of the battery is zinc skin), and it is a very important metal. It is slightly less dense than iron and has a hexagonal crystal structure. With the wide application of zinc, the consumption of zinc in the world market is gradually increasing, and the production and consumption of metal zinc and zinc oxide are growing extremely fast. [0003] With the growth of market demand and the increasing short...

Claims

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Application Information

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IPC IPC(8): C01G9/02C01G49/08B82Y30/00B01J20/16B01J20/28
CPCC01G9/02C01G49/08B82Y30/00B01J20/165B01J20/06B01J20/28009B01J20/28061B01J20/28007C01P2004/61C01P2006/80C01P2006/12C01P2004/64C01P2004/80
Inventor 丁宝文
Owner 安徽泰龙锌业有限责任公司
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