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Process method for separating zinc, iron and cobalt and nickel ore concentrates from cobalt and nickel slag

A process method, cobalt-nickel slag technology, applied to the improvement of process efficiency, chemical instruments and methods, iron compounds, etc., can solve the problems of low economic benefit and complicated process flow, and achieve high price, obvious economic benefit and less time-consuming Effect

Inactive Publication Date: 2013-04-03
河池市津泰资源再生有限公司
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Problems solved by technology

[0007] The purpose of the present invention is to overcome the disadvantages of complex process flow and low economic benefits, and provide a process for separating zinc, iron and cobalt-nickel concentrate from the by-product cobalt-nickel slag of hydrometallurgy zinc, which is suitable for the hydrometallurgy zinc industry Directly utilize zinc metal in cobalt-nickel slag and separate iron and cobalt-nickel metal with simple process, low cost, short cycle, no pollution and high efficiency

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  • Process method for separating zinc, iron and cobalt and nickel ore concentrates from cobalt and nickel slag
  • Process method for separating zinc, iron and cobalt and nickel ore concentrates from cobalt and nickel slag

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Embodiment Construction

[0028] The present invention will be described in further detail below in conjunction with the accompanying drawings. Such as figure 1As shown, the cobalt-nickel slag is first added to the sulfuric acid solution at a solid-to-liquid ratio of 1:3-5, heated and leached under stirring to fully dissolve completely, and the time for the sulfuric acid solution to dissolve the cobalt-nickel slag is 30-40 minutes. Separate the leaching solution from liquid to solid to obtain leaching slag and zinc solution. After washing the leaching slag several times, return it to the cobalt-nickel slag warehouse, and the washing liquid flows back into the zinc solution. Dilute the filtrate to 2000 ml with water to obtain the concentration of zinc ions It is 120-150 g / L, that is, zinc solution 1. Add a small amount of stone powder (calcium carbonate) while measuring with precision PH test paper, adjust the pH of the zinc solution to 5.0, control the temperature at 80-85°C, add hydrogen peroxide (hy...

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Abstract

The invention discloses a process method for separating zinc, iron and cobalt and nickel ore concentrates from cobalt and nickel slag. The method comprises the steps of: leaching, primary solid-liquid separation, oxidation and hydrolysis to separate iron element, secondary solid-liquid separation, oxidation and hydrolysis to separate cobalt and nickel elements, third solid-liquid separation and the like. The method solves the problem that raw materials are higher in price, complex in refining process, high in energy consumption and large in pollution of byproducts in conventional cobalt and nickel refining industry, and is suitable for the industry of smelting zinc by the wet method. Zinc metal and iron, and noble metals such as cobalt and nickel can be directly separated from cobalt and nickel slag with a simple process, low cost, short period, higher efficiency and low pollution.

Description

technical field [0001] The invention relates to the technical field of metallurgy and chemical industry, in particular to a process for separating zinc, iron and cobalt-nickel concentrate from cobalt-nickel slag. Background technique [0002] Zinc hydrometallurgy is a method of leaching zinc from zinc oxide calcine or other materials with an acidic solution, and then using electrolytic deposition technology to prepare metallic zinc from the zinc leaching solution. The process includes four main processes: roasting of zinc sulfide concentrate, leaching of zinc calcined sand, purification of leaching solution to remove impurities and electrolytic deposition of zinc. [0003] Among them, the process of purifying and removing impurities in the leaching solution is mainly to remove iron, arsenic, antimony, copper, cadmium, cobalt, nickel and other impurities in the leaching solution that are very harmful to zinc electrowinning, and produce a side effect in the final stage of the ...

Claims

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Application Information

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IPC IPC(8): C22B7/00C22B3/08C22B3/44C22B19/00C22B23/00C01G49/00
CPCY02P10/20
Inventor 伍永田吴仲阮靖远王继峰赵盛林史文革郑燕琼刘祺卢孟生覃韩莉石靖黎卫华聂小丰
Owner 河池市津泰资源再生有限公司
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