Method for smelting aluminum ore by carbon thermal reduction and non-ferrous metal smelting furnace therefor

Abstract

The invention relates to a method for reducing and smelting aluminum ore by using carbon heat and the nonferrous metal smelting furnace of the smelting aluminum ore, which belongs to the technical field of the metal ore smelting. The method is characterized in that the pellet preparation comprises the steps that, coal gangue, bauxite and waste fiber are crushed and levigated; binding agent is prepared; the powder or the short grained coal gangue and the bauxite are mixed uniformly with the fiber micro-particle in proportion; the mixture is made into the pellet by the binding agent; the pellet and the coke are put into smelting furnace alternatively. The smelting furnace is composed of a multi-hole melting zone connected with an air inlet pipe, a high temperature resistant furnace lining, a cooling atomizing sleeve, a pair of heating electrodes inserted at both sides of the smelting furnace bottom towards the centre and a cracking water burning chamber. After the method is applied, the polluted environment with black soot all over the sky is changed, and the distressed scene that the metal bearing slag is thrown away everywhere and the resources are wasted can be stopped; thus the resources is saved and used fully, and the environment is protected.

Description

technical field [0001] The invention relates to the technical field of refining and smelting metal ores; in particular, it relates to a method for smelting aluminum ore by carbothermal reduction and its nonferrous metal smelting furnace. Background technique [0002] In the smelting of non-ferrous metal minerals, bauxite is the most difficult to smelt, because of its high melting point and high viscosity; and. Therefore, countries all over the world have invested heavily in aluminum smelting. For this reason, non-ferrous metal smelting experts are trying to find a method that can produce suitable aluminum or aluminum alloys with less investment and lower energy consumption. [0003] However, in domestic refining of metal ores, the excess heat energy from refining ores is often scattered in vain, resulting in high energy consumption and high cost; and the unrefined slag is piled up everywhere as garbage, and there is no burnt gas in the smelting furnace. Spilling and discard...

AI Technical Summary

Problems solved by technology

[0003] However, in domestic refining of metal ores, the excess heat energy from refining ores is often scattered in vain, resulting in high energy consumption and high cost; and the unrefined slag is piled up everywhere as garbage, and there is no burnt gas in the smelting furnace. Spilled and discarded everywhere, not only pollutes the environment, but also seriously wastes resources

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