Biomass smelting furnace

Abstract

The invention belongs to the technical field of metal smelting and particularly relates to a smelting furnace using renewable biomass energy. The biomass smelting furnace comprises a smelting pot, a furnace body, a vaporization combustion chamber enclosed by the furnace body and a feeding device used for providing biomass energy for the vaporization combustion chamber. The biomass smelting furnace is characterized in that a rotary air inlet pipe is arranged at the bottom of the vaporization combustion chamber and connected with a blower device to enable ingoing air to rotate, at least one layer of tangential air inlet pipe is arranged in the middle of the side wall of the furnace body, the direction of an outlet end of each tangential air inlet pipe is tangential to the inner side wall of the furnace body, and an inlet end of each tangential air inlet pipe is connected with the blower device. The biomass smelting furnace has the advantages that production cost is reduced by using low-cost renewable biomass energy; and air tangent is adopted for assisting in vaporization combustion of biomass fuel to enable flame to be in spiral-flow type combustion, the flame rotates along with air flow to surround the inner wall of the furnace body and the wall of the smelting pot, and accordingly the furnace body and the smelting pot are heated uniformly, and the safety accident of bursting caused by nonuniform heating of the furnace body and the pot is eradicated.

Description

【Technical field】 [0001] The invention belongs to the technical field of metal smelting, and relates to a melting furnace for melting aluminum, zinc, magnesium, lead, copper and other metals, and in particular to an integrated energy-saving melting furnace utilizing renewable biomass energy. 【Background technique】 [0002] Melting is one of the casting production processes. Metal materials and other auxiliary materials are put into the heating furnace to be melted and tempered. The material in the furnace at high temperature (1300-1600K) undergoes certain physical and chemical changes to produce crude metal or metal enrichment. Pyrometallurgical process of materials and slags. In addition to concentrate, calcined sand, sintered ore, etc., sometimes it is necessary to add a flux to make the charge easy to melt, and to add a reducing agent for a certain reaction. In addition, in order to provide the necessary temperature, it is often necessary to add fuel for combustion. And ...

AI Technical Summary

Problems solved by technology

The advantage of the resistance melting furnace is that the temperature is easy to control, the crucible and the furnace body are heated evenly, and the service life is long, but the disadvantage is that the unit power consumption is extremely large

The service life of the resistance is short, and production is often delayed. The resistance wire needs to be replaced within 1 or 2 days after the furnace is shut down for cooling. Compared with the oil-fired furnace, its production capacity is still low, so there are fewer users

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