Induction heating continuous magnesium-smelting system and continuous magnesium-smelting technique

Abstract

The invention discloses a system of inductive heating continuous magnesium smelting and a continuous magnesium smelting technique. The system comprises a continuous feeding device, an inductive heating reaction chamber, a magnesium steam condensing device and a continuous discharging device; wherein the feeding device consists of a feeding housing and a spiral feeding mechanism, the reaction chamber comprises an inductive heating winding, a heating element, a clapboard with holes and a slag cooling device, the condensing device consists of a mesh clapboard, a dust deposition chamber, the magnesium steam condensing chamber, the continuous discharging device comprises spiral slag discharging mechanism and slag housing. The continuous magnesium smelting technique consists of the processes of the continuous feeding of reacting burden into the reaction chamber, the continuous condensation of the magnesium steam and the discharge of liquid magnesium, and also comprises steps of the continuous feeding of reacting slag into the slag housing and slag discharging. The invention has high heat energy utilization rate, and can realize the low cost continuous production of the metal magnesium.

Description

technical field [0001] The invention relates to an induction heating continuous reduction magnesium smelting system, and also relates to a continuous magnesium smelting process using the induction heating continuous reduction magnesium smelting system. Background technique [0002] The production methods of magnesium mainly include thermal reduction method and electrolysis method. At present, 70% of the world's magnesium production is produced by the "Pidgeon method" in the thermal reduction method. However, there are many defects in the current "Pidgeon method" magnesium smelting process, which are mainly reflected in: ① using non-renewable coal or gas petrochemical energy, and directly heating the reduction tank filled with pellets in the air The method not only makes the effective utilization rate of heat energy low and the life of the reduction tank is short, but also makes it difficult for the heat to quickly transfer to the center of the reduction tank, making the redu...

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Problems solved by technology

The patent "Induction Heating Reduction Magnesium Smelting Device (CN2265379)" proposes an induction heating magnesium smelting reduction device using electricity as a direct energy source, but this patent inevitably has defects in the external heating method (such as short life of the reduction tank, long reduction time, etc. ), and continuous operations cannot be implemented

The patent "Multiple Heat Sources-Electrothermal Magnesium Smelting Device and Process (CN1928134A)" also proposes a process and equipment for continuous magnesium smelting using AC or DC as energy and Si / C, C or metal materials as radiant heat generated by electrodes. , but there are also some defects in this patent, which are mainly manifested in: ①The heating element arranged in the furnace is easy to cause "bridging" of the charge, and the slag in the hot slag bin may also "bridge"; ②Using powder When feeding, there will inevitably be a large amount of dust in the crystalline magnesium, which not only increases the burden on the magnesium refining process, causes the secondary loss of magnesium to increase, but also may pollute the vacuum system; ③ The obtained crystalline magnesium also needs to be refined, This not only causes the secondary loss of magnesium, but also consumes energy

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