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Smelting furnace for nickel-bearing laterite ore

A technology of laterite nickel ore and smelting furnace, which is applied in the field of oxygen-enriched top combustion and side-blown laterite nickel ore smelting furnace, can solve the problems of high cost of blast furnace, poor operating environment, large energy consumption, etc., and achieves simplified flue gas treatment process and Facilities, cost reduction and energy consumption, effect of cost reduction

Active Publication Date: 2010-09-22
CHINA ENFI ENGINEERING CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high cost of coke, the cost of blast furnace smelting is high, and the operating environment is poor and the pollution is serious
Moreover, sintering also consumes a large amount of energy, the environment is poor, the pollution is serious, and the entire smelting process is complicated

Method used

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  • Smelting furnace for nickel-bearing laterite ore
  • Smelting furnace for nickel-bearing laterite ore
  • Smelting furnace for nickel-bearing laterite ore

Examples

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Embodiment Construction

[0024] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0025] In the description of the present invention, the orientation or positional relationship indicated by the terms "upper", "lower", "top", "bottom" etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention rather than Requirements that the invention must be constructed and operated in a particular orientation are not to be construed as limitations on the invention.

[0026] The laterite nickel ore smelting furnace according to the embodimen...

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Abstract

The invention discloses a smelting furnace for nickel-bearing laterite ore, comprising a furnace body, a gunjet for top combustion, a side-blown jugjet and an electrode. A hearth is limited in the furnace body; a smelting bath is arranged at the lower part of the hearth, and the furnace body is provided with a charging hole for adding materials to the hearth, a smoke outlet, a nickel outlet and a dreg outlet; the lower end of the gunjet for top combustion extends from the top of the furnace body to the hearth and is located at the upper side of the smelting bath and sprays pulverized coal and oxygen to the upper part of the hearth towards the smelting bath; the side-blown gunjet extends from the lateral side of the furnace body to the smelting bath to spray the pulverized coal and oxygen; and the lower end of the electrode extends to the smelting bath to heat the melt in the smelting bath and clarify and separate dregs from nickel and ferrum. The smelting furnace for the nickel-bearing laterite ore has the advantages of low cost and energy consumption, good operating environment, low pollution and simple process.

Description

technical field [0001] The invention relates to a laterite nickel ore smelting furnace, in particular to an oxygen-rich top-combustion and side-blowing laterite nickel ore smelting furnace. Background technique [0002] Nickel is a non-ferrous metal with a wide range of uses. Nickel production mainly includes fire method and wet method. Among them, nickel production by fire method mainly includes electric furnace smelting and blast furnace smelting. [0003] Electric furnace smelting uses electrodes to heat nickel ore, using coal as a reducing agent. Moreover, it is necessary to use a rotary kiln to pretreat the nickel ore before adding it to the electric furnace for smelting, to make the nickel ore into calcine, and then put it into the electric furnace for reduction smelting. Electric furnace smelting requires a large amount of electric energy, so the energy consumption and cost are high. In addition, rotary kiln pretreatment is required, which requires a large investme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B23/02
Inventor 曹珂菲张振民郑步东黎敏李曰荣李栋郝小红
Owner CHINA ENFI ENGINEERING CORPORATION
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