Smelting furnace

Abstract

The invention provides a smelting furnace. The smelting furnace comprises refractory materials, heat insulating materials, a blower, a pipeline, valves, ignition devices, fuel supply devices and temperature measuring devices. The smelting furnace is characterized in that a furnace chamber is provided with a heating chamber and a smelting chamber; the lower part of the heating chamber is communicated with the smelting chamber; the lower part of the smelting chamber is provided with a hearth; the hearth is provided with hearth discharge holes; the upper part of the heating chamber is provided with a heating chamber feeding hole and a heating chamber gas outlet; at least a flame path is arranged around the inner wall of the smelting chamber; at least an inlet channel is arranged on the side walls of the flame paths; and the inlet channels are communicated with the flame paths. The smelting furnace is energy-saving and environment-friendly, can be used for smelting various metals and alloys, can be used for smelting aluminium by a fire method and can be used for refining aluminium alloys. The smelting furnace can adopt any mineral for smelting, can realize carbothermal reduction of any metallic oxide and can smelt alloys even with soil or garbage, so the smelting furnace can turn stone and soil into gold and is true alchemy. The smelting furnace dispenses with cokes and synchronously completes ironmaking and steelmaking. The heat generated through steelmaking is fully utilized and the waste gases are unitedly treated. The smelting furnace can be used for producing glass, ceramic frits, sodium silicate and the like. The smelting furnace can adopt various materials, can refine precious elements, does not produce slag and can bring metallurgy revolution.

Description

technical field [0001] The invention relates to the fields of metallurgical equipment and kiln equipment such as blast furnaces, cupolas, smelting furnaces, reverberatory furnaces, and melting furnaces, in particular to a smelting melting furnace. Background technique [0002] Existing blast furnaces, cupolas, smelting furnaces, reverberatory furnaces, melting furnaces, etc. generally have exhausted flue gas temperatures that are too high, heat energy utilization rate is low, energy consumption is large, and pollution is serious. Coke must be used in blast furnaces and cupolas. Coke is used to provide heat sources, support columns, and filter melt materials. Coke resources are limited and expensive. Coke production pollutes the environment and increases energy consumption. During the use of the cupola, the flue gas rises to the sky, causing serious pollution. A large amount of blast furnace gas is produced in the blast furnace production. If it is not used properly, it will ...

AI Technical Summary

Problems solved by technology

The carbon monoxide content in the cupola flue gas is also high, and the flue gas temperature is very high, all of which bring a lot of energy waste

Blast furnace ironmaking requires preprocessing of raw materials such as ore sintering and pelletizing, which increases energy consumption and expenditure; it cannot directly use low-grade ore raw materials, which increases raw material costs and cannot make full use of resources; precious metals in ores cannot be extracted, resulting in waste of resources , waste residues pollute the environment and occupy land resources

Ironmaking and steelmaking cannot be completed simultaneously, and molten iron transfer and secondary blowing are required, which increases smelting costs; steel slag treatment is also troublesome, increasing steelmaking costs

Electrolytic aluminum is commonly used in aluminum smelting, which consumes a lot of energy and causes serious pollution. Waste residue and red mud are difficult to process and utilize, and occupy land resources. Pyrochemical aluminum smelting has only stayed in the laboratory stage so far.

Glass furnaces, ceramic frit furnaces, and sodium hydroxide furnaces generally have defects such as high energy consumption and insufficient environmental protection.

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