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Nickel matte preparation method

A technology for nickel matte and matte furnace, which is applied in the field of nickel matte preparation, can solve the problems of high power dependence, high cost, difficulty in large-scale production, etc., and achieves the effects of improving smelting efficiency, reducing energy consumption and high recovery rate.

Inactive Publication Date: 2019-04-26
CHINA ENFI ENGINEERING CORPORATION
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Problems solved by technology

[0006] In order to solve the current problems of processing laterite nickel ore, especially low-grade laterite nickel ore, such as high cost, high power dependence, poor environment, and difficulty in large-scale production, the applicant's purpose is to propose a continuous processing of laterite nickel by using oxygen-enriched molten pool smelting A new smelting process for preparing low-nickel matte from ore and / or nickel-containing waste slag

Method used

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  • Nickel matte preparation method

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Embodiment Construction

[0022] The technical solutions of the present invention will be further described below according to specific embodiments. The protection scope of the present invention is not limited to the following examples, which are listed for illustrative purposes only and do not limit the present invention in any way.

[0023] figure 1 Be the process flow sheet of the preparation nickel matte of one embodiment of the present invention, as figure 1 As shown, when using laterite nickel ore and / or nickel-containing waste slag to prepare nickel matte, the laterite nickel ore and / or nickel-containing waste slag are first dried at about 200°C in a drying kiln to remove part of the free water. The dried lateritic nickel ore and / or nickel-containing waste, reduced coal (crushed coal), flux and circulating smelting dust are batched and granulated through the disc granulator equipped in the plant to obtain nickel-containing materials.

[0024] The nickel-containing material is sent to the front...

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Abstract

The invention provides a nickel matte preparation method. The nickel matte preparation method comprises the steps of feeding laterite nickel ores and / or nickel-containing waste residues into an ore melting furnace to obtain liquid-state molten high-nickel slag; and feeding the liquid-state molten high-nickel slag and a vulcanizing agent into a matte smelting furnace to be subjected to matte smelting to obtain nickel matte and furnace slag. According to the nickel matte preparation method, the continuous melting matte smelting two-furnace series short process is adopted. The melting slag makingstage and the matte smelting vulcanization stage are separated, the smelting efficiency is improved, and energy consumption is reduced. Meanwhile, the recovery rate of nickel and cobalt in a productis high.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a method for preparing nickel matte by utilizing laterite nickel ore and / or nickel-containing waste residue. Background technique [0002] Nickel (Ni) is a rare and precious metal. It has the characteristics of anti-oxidation, anti-corrosion, high temperature resistance, high strength, good ductility, etc. It is widely used in aerospace, aviation, navigation, national defense, scientific research, industry, agriculture, medical, automotive It is indispensable in various industries such as iron and steel, and civil use, especially in the iron and steel and non-ferrous metal smelting industries, and the demand for nickel in high-tech fields and new energy technology fields is also very strong, especially in ternary power batteries. Material. [0003] The world's land-based nickel reserves are 41.7 billion tons, of which nickel in the form of nickel oxide ore accounts for 60.16%...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B23/02
CPCC22B23/025Y02P10/20
Inventor 刘诚陈学刚李曰荣杨晓华裴忠冶徐小锋曹珂菲代文彬郭亚光冯双杰许良
Owner CHINA ENFI ENGINEERING CORPORATION
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