Outer heating process multiple corrugated magnesium-smelting reduction jug

Abstract

The present invention relates to metallurgic technology, and is one externally heating process prismatic magnesium smelting reducing tank. The magnesium smelting prismatic tank includes one outside prismatic tank comprising one prismatic cylinder, two sealing heads and reinforcing hoops, one circular cylinder inside the prismatic tank, two end caps, one water cooling system and heat insulating boards between the prismatic tank and the circular cylinder. The prismatic tank and the circular cylinder can bear pressure caused by vacuum of 0.1-0.8 Pa. It is applied as the key apparatus for smelting magnesium. It has less deformation, long service life, low cost and convenient magnesium smelting operation.

Description

technical field [0001] The invention relates to a multi-corrugated magnesium smelting reduction tank by an external heat method, which relates to the technical field of metallurgy; in particular, it relates to the technical field of magnesium smelting; in particular, it relates to the technical field of key equipment required for smelting metallic magnesium; Reduction tank technical field. Background technique [0002] At present, silicon external heat method (Pidgeon method) and electrolysis method are commonly used in the smelting of magnesium in the world. Due to the limitation of electric energy, raw materials, environmental protection and other factors in my country, silicon external heat method is used for magnesium smelting; due to my country's The reserves of dolomite occupy the first place in the world, so all domestic magnesium smelting is carried out by silicon external heat method. Magnesium smelting by silicon external heat method mostly adopts horizontal tank r...

AI Technical Summary

Problems solved by technology

Magnesium smelting by silicon external heat method mostly adopts horizontal tank reduction furnace: this reduction furnace is a cylindrical tank structure, generally 2700-3000 mm long, 339 mm outer diameter, 269 mm inner diameter, and 35 mm wall thickness; Cylindrical structure, under the condition of working temperature of 1200℃ and vacuum degree of 5-13.33PA, and the tank body is very long, it will inevitably be affected by disturbance force; the combination of high temperature, vacuum and disturbance force is bad conditions, the reduction tank will be deformed in a short period of time; that is, the tank body will soften the tank wall under the external high temperature state, and the softened tank wall will deform under the internal negative pressure state, more specifically, it will It will become flat until it cannot be used; therefore, the life of the reduction tank currently in use in China is very short, generally only 40 days at most.

This state not only increases energy consumption due to slagging on the tank wall, but also prevents the implementation and operation of a series of mechanized measures such as mechanized charging, discharging, and slag removal due to the deformation of the tank wall, which seriously affects magnesium smelting. Industrial Development Process

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