Vertical reduction tank and reduction furnace device for metal smelting

Abstract

A leakage method of obstruction reducing furnace intrinsic heat towards the furnace outside along reduction bank; a method which can simultaneously strengthen the coefficient of overall heat transmission and creep resistance of the reduction bank; an air cooling method for metal ingot cylinder of the reduction bank; a method of carrying automatic shipping and delivery of the reduction bank using earth gravity; an on-line continuous monitoring method for matallic reducing process. A vertical reduction bank is built with the said method. A vertical reducing furnace built with the said vertical reduction bank is characterized in that it is of high calorific efficiency, short reduction cycle, long reduction bank age and automatic charge, and can perform on-line observation for reduction process.

Description

technical field [0001] The present invention relates to a reduction equipment suitable for the Pidgeon metal extraction method, more precisely, relates to the use and manufacture of a vertical reduction tank and a reduction furnace device. [0002] Although the description of the present invention takes the refining of metal magnesium as an example, it is also applicable to the refining of other volatile metals, such as calcium, strontium, zinc and the like. Background technique [0003] Invented in the 1940s, the Pidgeon metal extraction method (US Patent No. 2330143, Canadian Patent No. 415764, 415765 and 463416) is a method suitable for refining various volatile metals (such as magnesium, calcium, strontium, zinc, etc.) pyrometallurgical technology. The process includes the following steps: 1) put the raw material balls made by mixing and pressing the mineral material and reducing agent powder into a horizontally placed vacuum reduction tank and heat them; 2) under high ...

AI Technical Summary

Problems solved by technology

[0005] 2. The life of the reduction tank is short

At present, the average service life of magnesium reduction tank is only 2-3 months

[0006] 3. It is difficult to load and unload materials

Its narrow operating space makes loading and unloading difficult, low production efficiency and high labor intensity

[0007] 4. Unable to monitor the restore process

This often results in the phenomenon of "empty burning", that is, the reduction tank continues to be heated after the reduction reaction has been completed, thus causing a waste of energy; waste of raw materials

[0008] 5. Serious heat leakage

However, this approach has not yet been adopted

One reason is that the method provided by Pidgeon cannot effectively prevent the leakage of heat along the discharge channel, thereby reducing the heat utilization rate of the reduction furnace

Another reason is that Pidgeon failed to provide a proper discharge port cover opening device to avoid the threat to the operator's safety from the high temperature residue discharged quickly under the action of gravity

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