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Top-blown smelting equipment

A smelting equipment and top blowing technology, applied in the field of top blowing smelting equipment, can solve the problem of high melting temperature and achieve the effect of simplifying top blowing smelting equipment

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

The difference between laterite ore and sulfide ore is that it is a silicate-type nickel ore with a high melting temperature of 1450°C-1550°C, so the existing top blowing smelting equipment cannot meet this smelting condition

Method used

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  • Top-blown smelting equipment

Examples

Experimental program
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Effect test

Embodiment 1

[0041]The dry laterite, reduced coal and sulfur are fed into the melting furnace through the feed channel 11, and the mixed gas composed of oxygen and natural gas is sprayed into the molten pool from the vent hole 13 by the top blowing lance, and the bottom of the top blowing lance is higher than the liquid level of the melt. The dry laterite ore completes ore melting, nickel-iron reduction reaction and nickel and iron sulfidation reaction in the smelting reduction sulfide zone 25 . The oxygen and natural gas injected by the top-blowing lance will generate a large amount of flue gas during the combustion process to form a violent agitation on the melt, and under the action of the retaining wall 23 installed at the bottom of the molten pool, the nickel and iron metals in the melt can be fully reduced and vulcanized , and can promote the effective separation of slag and low-nickel matte mixed melt. The low-nickel matte is discharged from the product outlet 21, and the waste resi...

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Abstract

The invention discloses top-blown smelting equipment, which includes a furnace body and a base, wherein a material feeding channel and an air outlet are arranged at the top of the furnace body; the base is mounted at the bottom end of the furnace body; a waste residue outlet and a product outlet are arranged on the base; a vent duct for ventilating the interior of the furnace body is arranged in the material feeding channel; and the base accommodates the material to be reacted and discharges the reaction product and waste residue. According to the top-blown smelting equipment of the invention embodiment, by ventilating the interior of the furnace body through the material feeding channel, the process for further forming a gas channel on the furnace body is omitted, the top-blown smelting equipment is simplified, and the ventilation can serve for blending the material when feeding the material through the material feeding channel, so as to accelerate the smelting reaction and enable the smelting reaction to be more sufficient.

Description

technical field [0001] The invention relates to the technical field of metal smelting, and more specifically, the invention relates to a top blowing smelting equipment. 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 economically available nickel sulfide o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B23/02F27B3/00F27B3/22
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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