Non-ferrous metal smelting device

Abstract

The invention discloses a fusing furnace, which comprises the following parts: column-pattern suspension fusing furnace with vent, secondary middle coke reactor and reduced electric furnace, wherein the suspension fusing furnace contains column-pattern sediment pond, column-patterned reacting tower and rising flue. The invention improves fusing strength, which can smelt low-grade lead mineral and high-zinc material.

Description

technical field [0001] The invention relates to a nonferrous smelting device, in particular to a lead smelting furnace. Background technique [0002] Lead smelting methods are summarized as traditional method and direct lead smelting method. The traditional method is sintering - blast furnace smelting method; the direct lead smelting method is to cancel the sintering process of lead sulfide concentrate, and the raw concentrate is directly smelted in the furnace. For many years, the traditional method has been the main production method of lead. However, with the continuous improvement of human beings' awareness of environmental protection and energy conservation, the shortcomings of the traditional method have become increasingly prominent. Many lead smelters in the world have gradually adopted the direct lead smelting method to replace the traditional method. The direct smelting method can be summarized as one-stage furnace method, such as Gifset method, QSL method, Kaldor...

AI Technical Summary

Problems solved by technology

However, the traditional law has the disadvantage that it is difficult for people to continue to accept it.

[0005] (1) The sintering machine and blast furnace produce a large amount of gas, while SO 2 The flue gas with low concentration is difficult to treat economically, so that it will cause serious pollution to the environment

[0006] (2) During the sintering process, a large amount of oxidation reaction heat has not been fully utilized, and after the sintered agglomerate is cooled and smelted in a blast furnace, a large amount of expensive metallurgical coke will be consumed, resulting in high energy consumption

[0007] (3) The process flow is long and there are many equipments; there is a lot of material turnover, the sintered block is broken back, the mixture is sintered, and the blast furnace smelting operation produces lead-containing dust and lead-containing steam, SO 2 The flue gas, serious low-altitude pollution, poor operating environment, poor labor and industrial sanitation conditions, and great harm to the health of employees

[0013] (2) The flue gas of the oxidation furnace has been well treated, but the flue gas of the reduction blast furnace is still large and SO 2 Low concentration, difficult to control

[0014] (3) The high-lead slag produced by the oxidation reaction needs to be cooled, crushed, then reduced and smelted in a blast furnace, and expensive metallurgical coke is added, the reaction heat is not fully utilized, and the energy consumption is still high

[0022] The QSL method has been used in Stolberg in Germany, Onsan in South Korea, smelter in Northwest China, and Cominco in Canada. Due to the difficulty in controlling the oxidation and reduction atmosphere in a furnace, the operation is difficult, the lining is eroded quickly, and the life of the oxygen lance is long. Short, slagging and other problems, the smelter in Northwest China has only been tested for 3 times in 15 years and has been shut down for less than 12 months.

[0036] The disadvantages of Gifset furnace are: high investment cost, especially difficult to obtain the technology license channel of Gifset; in addition, the operation technology requires high precision

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