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Smelting side-blowing reduction lead-zinc smelting process

A process and lead smelting technology, applied in the field of smelting side blowing reduction lead and zinc smelting process, can solve the problems of comprehensive energy consumption increase, achieve the effect of improving utilization rate and improving industrial production efficiency

Inactive Publication Date: 2013-12-18
CHINA ENFI ENGINEERING CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to realize the harmless and comprehensive utilization of zinc hydrometallurgy slag, rotary kilns, fuming furnaces, top-blown furnaces and other pyrotechnic processes are currently used to greatly increase the overall comprehensive energy consumption of zinc hydrometallurgy.

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  • Smelting side-blowing reduction lead-zinc smelting process
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  • Smelting side-blowing reduction lead-zinc smelting process

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Embodiment Construction

[0022] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention, but should not be construed as limiting the present invention.

[0023] In the description of 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" and other directions or positions indicated The relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the prese...

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Abstract

The invention provides a smelting side-blowing reduction lead-zinc smelting process. The process comprises the following steps: adding a lead-zinc-containing material and a flux into a smelting furnace and smelting the lead-zinc-containing material and the flux so as to get a melt of a lead-zinc-containing oxide and smelting flue gas; enabling the melt of the lead-zinc-containing oxide to flow into a side blowing reduction furnace, and performing side blowing of pulverized coal and oxygen-rich gas into the side-blowing reduction furnace to perform reduction reaction so as to get crude lead, flue gas of zinc-containing steam and slag; discharging the crude lead from the lead discharge port of the side blowing reduction furnace, discharging the slag from the slag discharge port of the side blowing reduction furnace and enabling the flue gas of the zinc-containing steam, discharged from the side blowing reduction furnace, to pass through a lead-splash condenser to get crude zinc and the dezincified flue gas. By utilizing the process, the recovery rate of lead-zinc can be significantly improved and the energy consumption can be further reduced.

Description

Technical field [0001] The invention relates to the technical field of smelting lead and zinc, in particular to a smelting side blowing reduction smelting process for lead and zinc. Background technique [0002] At present, there is only ISP in the world that simultaneously smelts lead and zinc. The ISP process is to mix the lead-zinc mixed ore with a certain amount of flux into the sintering machine for desulfurization and roasting. The produced hot burnt block enters the sintering block insulation bin, and the hot coke preheated to above 800℃, is discharged from the agglomeration block insulation bin and the coke storage bin into the charging tank in batches, and then added to the closed blast furnace through the charging tank, and then the closed blast furnace The tuyere is fed into the hot air pre-heated to over 800℃ by the Corby-type hot blast furnace to reduce and smelt the agglomerates. Crude lead and slag are produced from the hearth, and the flue gas containing zinc vap...

Claims

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Application Information

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IPC IPC(8): C22B13/02C22B19/04
Inventor 蒋继穆尉克俭张廷安高保军黄祥华王建铭张振民
Owner CHINA ENFI ENGINEERING CORPORATION