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Method for producing nickel matte by melting through dry red soil type nickel ore melting tank

A technology for smelting laterite-type nickel ore and molten pool, which is applied in the field of metal smelting, can solve the problems of demanding power supply and difficulty in carrying out the production of laterite ore resources, and achieves energy saving reduction, simple implementation and operability strong effect

Inactive Publication Date: 2012-09-26
CHINA ENFI ENGINEERING CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using the existing rotary kiln-electric furnace process to smelt ferronickel has strict requirements on the power supply of the factory location, especially in areas lacking electricity, it is difficult to carry out production work utilizing laterite resources

Method used

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  • Method for producing nickel matte by melting through dry red soil type nickel ore melting tank
  • Method for producing nickel matte by melting through dry red soil type nickel ore melting tank

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] Mix dry laterite-type nickel ore, anthracite, sulfur, and limestone in a mass ratio of 10:1:1:1 to obtain a mixed material, which is added to a top-blown furnace, and the top-blown molten pool is carried out at 1500°C Smelting to obtain the nickel matte product Ni x Fe 1-x S, Ni 3 S 2 And NiFe mixture, waste residue and hot flue gas.

[0070] The hot flue gas is subjected to dust collection treatment, and the waste heat of the hot flue gas is used for power generation.

[0071] The discharge temperature of the waste slag is 1400° C., and the waste slag is utilized as a resource to obtain mineral wool and / or artificial sand.

Embodiment 2

[0073] Mix dry laterite-type nickel ore, bituminous coal, pyrite, and lime at a mass ratio of 10:2:2:1 to obtain a mixed material, which is added to a side-blowing furnace for side-blown melting at 1550°C. Blowing bath smelting to obtain nickel matte product Ni x Fe 1-x S, Ni 3 S 2 And NiFe mixture, waste residue and hot flue gas. The hot flue gas is subjected to dust collection treatment, and the waste heat of the hot flue gas is used for power generation; the waste residue is recycled to obtain mineral wool and / or artificial sand.

Embodiment 3

[0075] Mix dry laterite-type nickel ore, coke, magnesium sulfate, and dolomite at a mass ratio of 10:1:1:2 to obtain a mixed material, which is added to a bottom-blown furnace and bottom-blown at 1350°C The molten pool is smelted to obtain the nickel matte product Ni x Fe 1-x S, Ni 3 S 2 And NiFe mixture, waste residue and hot flue gas. The hot flue gas is subjected to dust collection treatment, and the waste heat of the hot flue gas is used for power generation; the waste residue is recycled to obtain mineral wool and / or artificial sand.

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Abstract

The invention discloses a method for producing nickel matte by melting through a dry red soil type nickel ore melting tank, comprising the following steps of: a) mixing dry red soil type nickel ore with a reducing agent and a vulcanizing agent to obtain a mixed material; and b) melting the mixed material in the melting tank to obtain a nickel matte product, waste slag and hot smoke. According to the method for producing the nickel matte by the smelting through the dry red soil type nickel ore melting tank, disclosed by the embodiment of the invention, the smelting of the nickel matte is realized by using a melting method by adopting the melting tank; the method has the advantages of being simple in implementation and strong in maneuverability, can greatly reduce the energy consumption of melting the nickel matte and is good for environmental friendliness. The method for producing the nickel matte by the smelting through the dry red soil type nickel ore melting tank can carry out red soil ore melting work in a region lacking of electric power, and coal can supply an energy source in a whole production process.. After high-temperature smoke in the production process is de-dusted, heat energy recycle and utilization can be carried out by using a residual heat power generation technology, so as to effectively reduce the energy consumption of a whole melting process.

Description

technical field [0001] The invention relates to the technical field of metal smelting, and more specifically, the invention relates to a method for producing nickel matte by smelting a dry laterite nickel ore molten pool. Background technique [0002] Nickel has the characteristics of anti-oxidation, anti-corrosion, high temperature resistance, high strength, good ductility, etc. It has a wide range of uses, especially in the iron and steel and non-ferrous metal smelting industry. The proportion of consumption is the largest, followed by light industry, machinery manufacturing, chemical industry , petroleum and electric power industries, and the demand for nickel in high-tech fields is also very strong. [0003] The world's land-based nickel reserves are about 41.7 billion tons, 39.14% of which exist in the form of sulfide ores, while about 70% of the world's nickel is extracted from sulfide ores, and nickel in oxide deposits accounts for 60.16% of nickel reserves. With the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/02C22B5/08C22B23/00C22C1/02C22C33/04C22C1/10
Inventor 尉克俭马明生卢笠渔李曰荣黎敏李兴杰
Owner CHINA ENFI ENGINEERING CORPORATION