Multilayer vacuum cooling crystallization device for magnesium vapor

Abstract

A multi-layer vacuum cooling crystallization device for magnesium steam comprises: a vertical double-layer shell, an internal multi-layer crystallization assembly, a circulating water cooling assemblyand a control mechanism. The vertical double-layer shell is composed of an upper crystallization section and a lower collection section which are arranged in an up-down butt joint mode, the upper crystallization section is of a vertical double-layer cylindrical structure with an opening in the lower end, and an interlayer cavity for cooling water to pass through is arranged between the double-layer cylindrical structures. By improving the internal structure of the cooling crystallization device, the cooling efficiency is high, sweeping and collecting of magnesium crystals in the device can beautomatically achieved without shutdown, the whole production process is a vacuum environment, the product is high-purity magnesium, the automation degree is high, the safety and reliability are good, and the production efficiency is high.

Description

technical field [0001] The invention relates to the technical field of industrial magnesium purification equipment, in particular to a multi-layer vacuum cooling crystallization device for magnesium vapor. Background technique [0002] Magnesium is a metal element with relatively active chemical properties. At room temperature, it can react with air to form a magnesium oxide layer on the outer surface. Magnesium is also one of the lightest structural metal materials, and has high specific strength and specific stiffness, good damping, machinability and thermal fatigue, not easy to age, good thermal conductivity, strong electromagnetic shielding ability, excellent die-casting process performance, and easy to recycle Etc. It has a wide range of uses in the electronic communication integrated device industry, audio-visual equipment industry, motor industry, nuclear power device industry, automobile industry, and medical industry. [0003] In the prior art, in the process of p...

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Problems solved by technology

The main defects of existing cooling and crystallization devices are: 1. The inner wall area of ​​the crystallizer that can be used for cooling and crystallization is limited, resulting in low metal cooling efficiency and long production cycle; 2. In order to relatively improve the cooling efficiency, the cooling crystallizer The volume is usually large, resulting in a large area and high cost; 3. After the metal is cooled and crystallized on the inner wall of the crystallizer, it cannot be unloaded by itself, and it needs to be shut down regularly to scrape and collect the metal crystals on the inner wall, which not only has production efficiency Low, high safety risk defects, the open environment after the shutdown is easy to cause the oxidation of magnesium crystals, resulting in a high impurity rate of finished magnesium, and it is impossible to obtain high-purity magnesium

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