Distillation furnace for directly preparing high-purity zinc products from hot galvanizing slag

Abstract

The invention discloses a distillation furnace for directly preparing high-purity zinc products from hot galvanizing slag, belonging to a zinc product preparation device in the nonferrous metallurgy industry. The distillation furnace is provided with a melting section, an evaporation section and a rectifying section in turn, wherein the melting section and the evaporation section are arranged horizontally, and the rectifying section is arranged vertically; one end of the melting section is provided with a raw material inlet, the other end of the melting section is communicated with the evaporation section, and the outlet of the evaporation section is communicated with the inlet of a silicon carbide tray arranged in the rectifying sections through a connection channel; and the outlet of the silicon carbide tray is communicated with a condenser on the outside of the furnace body through a zinc vapor duct. The distillation furnace integrates the advantages of the horizontal zinc distillation furnace and the tower type zinc distillation furnace and is suitable for the treatment of zinc-containing high-iron materials such as hot galvanizing slag and hard zinc; and a certain of service life can be ensured and the distillation furnace is suitable for the industrial productions of high-purity zinc powder and zinc ingots.

Description

technical field [0001] The invention relates to the field of metallurgical equipment, in particular to a distillation furnace capable of removing impurities such as metallic iron, lead and aluminum in hot-dip galvanizing slag to prepare high-purity zinc products. Background technique [0002] At present, the preparation method of high-purity zinc products at home and abroad is mainly the distillation condensation method, and the zinc distillation devices mainly include horizontal zinc distillation furnace and tower zinc distillation furnace. The horizontal zinc distillation furnace has small investment, quick results, safety and reliability, but its ability to remove impurities is limited, and the lead content in the product often exceeds the standard, which limits its application; although the tower type zinc distillation furnace has a good effect of removing impurities, it has very high requirements for raw materials. Raw materials with high iron content will reduce the li...

AI Technical Summary

Problems solved by technology

The horizontal zinc distillation furnace has small investment, quick results, safety and reliability, but its ability to remove impurities is limited, and the lead content in the product often exceeds the standard, which limits its application; although the tower type zinc distillation furnace has a good effect of removing impurities, it has very high requirements for raw materials. Raw materials with high iron content will reduce the life of the furnace body and increase production costs after being put into the furnace

Hot-dip galvanizing slag has a wide range of sources and high zinc content. It is very valuable for its development and utilization today when zinc resources are increasingly scarce. However, the current zinc distillation furnace cannot meet the requirements for directly preparing high-purity zinc products from hot-dip galvanizing slag.

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