Sublimation apparatus for metal purification

Abstract

The invention provides a sublimation apparatus used for the purification of metals. The apparatus comprises a bracket, a heating furnace which is supported on the bracket, a subliming sleeve which is arranged in the heating furnace, extends along the longitudinal direction of the heating furnace and passes through the whole heating furnace, a charging container which is arranged in the subliming sleeve and is positioned in a first section of the subliming sleeve, and a condenser which is arranged in the subliming sleeve and positioned in a second section of the subliming sleeve; particularly,the heating furnace comprises a first heating furnace and a second heating furnace which are separated mutually; the temperature of the first heating furnace is different from that of the second heating furnace, wherein, the first section of the subliming sleeve is positioned in the first heating furnace and the second section of the subliming sleeve is positioned in the second heating furnace. Preferably the sublimation apparatus used for purification of metals adopts the whole horizontal structure, particularly, the heating furnace is horizontally supported on the bracket, the subliming sleeve is horizontally arranged in the heating furnace and the charging container and the condenser are respectively and horizontally arranged in the subliming sleeve.

Description

technical field [0001] The invention relates to the field of metal purification, in particular to sublimation equipment for metal purification. Background technique [0002] The use of sublimation equipment to purify metals is a commonly used means of metal purification. The principle of metal purification and sublimation equipment is as follows: Different metal elements have different boiling points under different vacuum conditions. By controlling the temperature and vacuum degree in the heating furnace, the impurity elements with low boiling points are first evaporated, volatilized or sublimated to be removed; and then controlled The temperature makes the desired metal evaporate, volatilize or sublime, and then collect through condensation to obtain a purified metal product; finally, some refractory and non-volatile impurity metals remain in the charging crucible, and they can also be conveniently remove. [0003] In the prior art, vertical sublimation equipment is gene...

AI Technical Summary

Problems solved by technology

The temperature control in the well-type resistance furnace 10 of this sublimation equipment is divided into three parts from the bottom to the top, and each part needs to meet different temperature conditions. However, in the integral well-type resistance furnace 10, a set of The resistance wire 4 of the refractory brick layer 7 is very complicated to realize this segmented temperature control and the control accuracy is not high, so that the impurity removal effect is poor and the operation is difficult

And, for vertical sublimation equipment, when the sublimated metal condenses in the condenser 3 and adheres to the inner wall of the condenser 3, as the amount of attached metal particles increases, the metal particles often fall off. , which will also adversely affect the metal purification process and even damage the equipment

In addition, the manufacture and assembly of vertical sublimation equipment are more complicated and the manufacturing cost is higher

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