High-purity aluminum directional solidification short-process purification equipment and purification method

Abstract

The invention discloses directional solidification short process purification equipment and purification method of high-purity aluminum. The purification equipment comprises a purification device and a heating device, which are respectively independent, wherein the purification device comprises a cooling device, a purification heat conduction layer, a purification heat preservation crucible, a stirring device, a purification furnace cover, a vacuumizing device, a first heating mechanism and a temperature measurement device; the heating device comprises a heat insulating layer, a heating heat conduction layer, a heating crucible, a heating furnace cover, a second vacuumizing device, a second heating mechanism and a second temperature measurement device, a rotating platform is arranged at the bottom of the heating crucible, and a rotating mechanism and a transmission mechanism are arranged below the rotating platform. The purification method in which a purification process and a heating process are separately operated is adopted in the invention, so that a solid-liquid interface can be accurately controlled in the purification process to keep a stable temperature gradient and higher purification efficiency and purification quality are kept; afterheat of purified solid aluminum is utilized in the heating process, so that the heating efficiency is more than twice higher than that of conventional heating. The purification equipment disclosed by the invention has the advantages of low energy consumption, large handling capacity, high purification efficiency and high product purity.

Description

Technical field: [0001] The invention relates to a high-purity aluminum directional solidification short-process purification equipment, in particular to a purification method for high-purity aluminum purification using the high-purity aluminum directional solidification short-process purification equipment, which belongs to the technical field of aluminum metallurgy purification. Background technique: [0002] Purification and purification of aluminum by segregation method is an industrially applied process method. At present, segregation method purification technology mainly includes distribution crystallization method, zone smelting method and directional solidification method. The directional solidification method can be divided into cooling tube solidification method, bottom cooling method, side wall cooling method, upper lifting solidification method, lateral solidification method, etc. The directional solidification method has the advantages of low energy consumption, ...

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Problems solved by technology

But this invention has some disadvantages in the process of use: 1. Since all operations are completed in a single furnace body, its heating and cooling efficiency is relatively low, and the production cycle is prolonged, resulting in low production capacity; 2. Since the growth mode of the purified crystal is from the bottom up Accumulation is not conducive to the accumulation of impurity elements at the end, resulting in low purification efficiency; 3. In order to meet the purity requirements of the purified crystal ingot, 15% to 70% of the thickness needs to be removed from the tail, resulting in low yield

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