Zinc metallurgy apparatus and process

Abstract

The invention discloses a zinc metallurgy device and a zinc metallurgy technique. The zinc metallurgy device comprises a smelter hearth for melting zinc concentrate to smelt for ingoting; a blast furnace for melting the ingoting to lead zinc in the ingoting to become zinc vapor; and a condensation separating device, a stock gas inlet of which is connected with a stock outlet of the blast furnace;the condensation separating device accommodates liquid lead and receives zinc-containing stock gas from the blast furnace and captures zinc from the zinc-containing stock gas by the liquid lead as wellas leads the captured zinc to become liquid zinc floating above the liquid lead for separating lead and zinc. The zinc metallurgy device and zinc metallurgy technique provided by the invention reduce air and noise pollution, improve efficiency, reduce cost and investment, and effectively use resources and energy.

Description

technical field [0001] The invention designs the smelting of non-ferrous metals, and in particular relates to a zinc smelting equipment and a zinc smelting process. Background technique [0002] The blast furnace zinc smelting method was initiated by the British Empire Smelting Company in the 1950s, so it is often called the ISP method (Imperial Smelting Method). At present, there are 12 countries in the world that adopt the ISP zinc smelting method, and the output of the ISP zinc smelting method accounts for 14% of the world's total output. [0003] The process of zinc smelting by ISP method is generally as follows: first, use a sintering machine to sinter the mixture of zinc concentrate, flux (such as limestone), and fuel, then use a pulverizer to crush the sintered block, and then screen the crushed sintered block The sintered ore whose particle size meets the requirements is sent to the blast furnace for zinc smelting, while the sintered ore whose particle size does not...

AI Technical Summary

Problems solved by technology

For example, after crushing and screening, only 20% of the sintered ore meets the blast furnace particle size requirements, and the remaining 80% of the sintered ore is returned for sintering, crushing and screening again, which wastes energy and reduces efficiency

[0005] In addition, there are many problems in sintering ore by sintering machine, for example, the noise pollution and dust pollution of sintering machine are very large, and lead poisoning is prone to occur

[0006] Use a sintering machine to sinter the ore, and the investment is very large

Moreover, the sulfur in the ore becomes sulfur dioxide after being sintered by the sintering machine. However, the content and concentration of sulfur dioxide in the exhaust gas of the sintering machine are small and the concentration is low, making acid production difficult, so the recovery rate of sulfur is low. If it is used for acid production, it will greatly Increase investment and cost of acid plant

In addition, the sulfur dioxide content of the sintering machine exhaust discharged into the atmosphere is large, resulting in air pollution and acid rain

[0007] Therefore, for the existing blast furnace zinc smelting, although many reform measures have been taken for the sintering machine, the effect is not good, and the above problems cannot be solved well.

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