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Rich-oxygen top-blown smelting/liquid high-lead slag side-blown direct-reduction lead smelting process

A technology of oxygen-enriched top-blowing and high-lead slag, which is applied in the field of oxygen-enriched top-blown smelting-liquid high-lead slag side-blown direct reduction lead smelting process, which can solve the problems of low direct metal recovery rate, poor blast furnace operating environment, and high cost , to achieve the effects of small heat loss, energy consumption reduction, and comprehensive energy consumption reduction

Active Publication Date: 2014-08-20
CHINA ENFI ENGINEERING CORPORATION +1
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  • Claims
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Problems solved by technology

The high-lead slag-blast furnace process in the related art requires cooling of the high-lead slag after smelting, using a slag casting machine to cast slag, and utilizing a blast furnace for reduction, so that energy consumption is high, the direct metal recovery rate is low, the operating environment of the blast furnace is poor, and the blast furnace production The use of coke has the disadvantage of high cost

Method used

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  • Rich-oxygen top-blown smelting/liquid high-lead slag side-blown direct-reduction lead smelting process
  • Rich-oxygen top-blown smelting/liquid high-lead slag side-blown direct-reduction lead smelting process

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Embodiment Construction

[0016] 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.

[0017] The lead smelting equipment according to the embodiment of the present invention will be described below with reference to the accompanying drawings. The lead smelting equipment according to the embodiment of the present invention can also be called oxygen-enriched top blowing smelting-liquid high lead slag side blown direct reduction lead smelting equipment

[0018] The lead smelting equipment according to the embodiment of the present invention mainly includes an oxygen-enriched top-blown smelting furnace and a side-blown...

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Abstract

The invention discloses a rich-oxygen top-blown smelting / liquid high-lead slag side-blown direct-reduction lead smelting process. The lead smelting process includes: adding a lead-containing material into a rich-oxygen top-blown smelting furnace and performing top-blown oxidizing smelting to obtain primary crude lead, melt high-lead slag and sulfur dioxide flue gas; feeding the melt high-lead slag discharged from the rich-oxygen top-blown smelting furnace into a liquid high-lead slag side-blown reduction furnace and performing side-blown reduction smelting to obtain secondary crude lead, reduction furnace slag and reduction furnace flue gas; and discharging the primary crude lead from the rich-oxygen top-blown smelting furnace and discharging the secondary crude lead from the liquid high-lead slag side-blown reduction furnace. The lead smelting process according to embodiments is environmental friendly, reduced in energy consumption and high in metal recovery rate.

Description

technical field [0001] The invention relates to the technical field of nonferrous metallurgy, in particular to a lead smelting process, and more specifically to an oxygen-enriched top-blown smelting-liquid high-lead slag side-blown direct reduction lead smelting process. Background technique [0002] China is the world's largest lead producer and consumer. In 2012, the lead output reached 4.646 million tons, and the consumption was 4.51 million tons. China is also a country with poor lead ore resources. my country's lead smelting production needs, most of the lead raw materials need to be imported. The traditional lead smelting process is sintering-blast furnace reduction smelting, but it has the disadvantages of high energy consumption and serious pollution. Also proposed in the related art are the oxygen bottom-blown oxidation-blast furnace reduction process (SKS lead smelting method), and the Kiefset method, etc. The high-lead slag-blast furnace process in the related ar...

Claims

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Application Information

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IPC IPC(8): C22B5/00C22B13/00
Inventor 王忠实沈立俊邢国华孙成余邓兆磊贾著红陈学刚保自坤李炬蒋荣生黎敏庄福礼俞兵杨伟马绍斌王勇张成江
Owner CHINA ENFI ENGINEERING CORPORATION
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