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Method for smelting nickel matte by laterite type nickel ore

A technology of laterite-type nickel ore and nickel matte, applied in the direction of nickel sulfide, etc., can solve the problems of difficult and harsh utilization of laterite resources, and achieve the effect of reducing energy consumption and strong operability

Inactive Publication Date: 2012-10-03
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 products 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 smelting nickel matte by laterite type nickel ore

Examples

Experimental program
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Effect test

Embodiment 1

[0149] Provide laterite-type nickel ore, put it into a drying kiln for calcination and drying at 700°C to obtain dry laterite-type nickel ore, mix the dried laterite-type nickel ore, anthracite and limestone in a mass ratio of 16:3:1 to obtain a mixed material, The mixed material is added to a top-blown melting furnace, and the top-blown molten pool is smelted at 1500° C. to obtain ferronickel products and waste slag.

[0150] Sulfur and limestone are added to the ferronickel product during discharge into the converter, the mass ratio of ferronickel product: sulfur: limestone is controlled to be 10:1:1, and the melting temperature of the converter is 1450°C 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.

[0151] The hot flue gas is subjected to dust collection treatment, and the waste heat of the hot flue gas is used for power generation.

[0152] The discharge temperature of the waste slag is 1400° C., and the ...

Embodiment 2

[0154] Provide laterite-type nickel ore, put it into a drying kiln for calcination and drying at 700°C to obtain dry laterite-type nickel ore, mix dry laterite-type nickel ore, anthracite and limestone at a mass ratio of 15:2:3 to obtain a mixed material, The mixed material is put into a side-blown melting furnace, and the side-blown molten pool is smelted at 1500° C. to obtain ferronickel products and waste slag.

[0155] Sulfur and limestone are added to the ferronickel product when it is discharged into the converter, the mass ratio of ferronickel product: sulfur: limestone is controlled to be 10:1:1, and the melting temperature of the converter is 1500°C 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.

[0156] The hot flue gas is subjected to dust collection treatment, and the waste heat of the hot flue gas is used for power generation.

[0157] The discharge temperature of the waste slag is 1300°C, and the w...

Embodiment 3

[0159] Provide laterite-type nickel ore, put it into a drying kiln for calcination and drying at 700°C to obtain dry laterite-type nickel ore, mix the dried laterite-type nickel ore, anthracite and limestone in a mass ratio of 16:3:1 to obtain a mixed material, Putting the mixed material into a roasting rotary kiln for roasting to obtain calcined sand; adding the calcined sand to an electric furnace for smelting to obtain ferronickel products and waste slag.

[0160] Sulfur and limestone are added to the ferronickel product when it is discharged into the converter, the mass ratio of ferronickel product: sulfur: limestone is controlled to be 10:1:1, and the melting temperature of the converter is 1500°C to obtain the nickel matte product Ni x Fe1-x S, Ni 3 S 2 And NiFe mixture, waste residue and hot flue gas.

[0161] The hot flue gas is subjected to dust collection treatment, and the waste heat of the hot flue gas is used for power generation.

[0162] The discharge tempera...

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Abstract

The invention discloses a method for smelting nickel matte by a laterite type nickel ore. The method comprises the following steps: a) the laterite type nickel ore is smelted by a rotary kiln electric furnace or a weld crater to obtain a ferronickel product; and b) the ferronickel product and a vulcanizer are mixed and then smelted in a converter to obtain a nickel matte product and waste residue. According to the method for smelting the nickel matte by the laterite type nickel ore disclosed by the embodiment of the invention, the ferronickel product can be obtained by smelting in the rotary kiln electric furnace or the weld crater, and then the ferronickel product is smelted in the converter to obtain the nickel matte product. The method has high operability, the ferronickel product can be obtained in the intermediate reaction, the laterite smelting work can be carried out in the area lacking electric power, the energy source in the whole production process can be provided by coal, a cogeneration technology can be utilized for heat energy recycling after high temperature smoke is dedusted in the production process, and the effect that the energy consumption in the whole smelting process can be effectively reduced is achieved.

Description

technical field [0001] The invention relates to the technical field of metal smelting, and more specifically, the invention relates to a method for smelting nickel matte by using lateritic nickel ore. 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 depletion of economi...

Claims

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Application Information

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IPC IPC(8): C22B23/02C01G53/11
Inventor 尉克俭马明生卢笠渔李曰荣黎敏李兴杰
Owner CHINA ENFI ENGINEERING CORPORATION
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