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Lead-zinc ore smelting method

A smelting method and technology of lead-zinc ore, which is applied in the field of metallurgy, can solve the problems that the smelting methods of lead-zinc ore need to be improved.

Active Publication Date: 2019-03-01
CHINA ENFI ENGINEERING CORPORATION
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Therefore, the current lead-zinc ore smelting methods still need to be improved

Method used

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  • Lead-zinc ore smelting method
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  • Lead-zinc ore smelting method

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Embodiment Construction

[0026] 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 and are intended to explain the present invention and should not be construed as limiting the present invention.

[0027] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial" , "radial", "circumferential" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the ...

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Abstract

The invention discloses a lead-zinc ore smelting method. The method comprises the following steps: mixing lead-zinc ores with a fluxing agent, and carrying out oxidizing smelting on an obtained mixture so as to obtain melt containing zinc oxide and lead oxide; utilizing a reducing agent to carry out reduction treatment and slag settlement treatment on the melt containing the zinc oxide and the lead oxide in a power frequency electrothermal reduction furnace so as to obtain zinc-containing smoke, liquid lead and slags; and condensing the zinc-containing smoke so as to obtain liquid zinc and coal gas. By utilizing the method, the lead-zinc ores, after being treated by oxidizing smelting, can be directly supplied to the power frequency electrothermal reduction furnace in a high-temperature melt state without the need for the separation of the lead-zinc ores. In the furnace body, the zinc oxide can be reduced to metal zinc steam by high-temperature carbon, and liquid metal zinc is obtained through further condensation. The lead oxide entering the furnace body is reduced into liquid metal lead by the high-temperature carbon, and the liquid metal lead falls to a settling chamber at the lower part of the vertical pit type power frequency electrothermal reduction furnace with liquid metal lead slags consisting of iron, silicon, calcium, aluminum and magnesium oxides.

Description

technical field [0001] The invention relates to the field of metallurgy. Specifically, the invention relates to a method for smelting lead-zinc ore. Background technique [0002] Since lead and zinc resources are mostly symbiotic ores, they are generally sorted into lead concentrate and zinc concentrate after mining, and sent to lead smelters and zinc smelters for separate processing. Due to the difficulty of thorough separation, there is always a certain amount of zinc impurity in the lead concentrate, and a certain amount of lead impurity in the zinc concentrate. After smelting, the zinc fume produced by the lead factory needs to be sent to the zinc factory for treatment, and the lead and silver slag produced by the zinc factory needs to be sent to the lead factory for treatment. [0003] Therefore, the current lead-zinc ore smelting methods still need to be improved. Contents of the invention [0004] The present invention aims at solving one of the above technical p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B4/04C22B5/10C22B19/04C22B19/02C22B13/02
CPCC22B4/04C22B5/10C22B13/02C22B19/02C22B19/04
Inventor 蒋继穆张廷安李东波黎敏李栋马明生裴忠冶陈学刚吴卫国
Owner CHINA ENFI ENGINEERING CORPORATION
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