Dehydration device for preparing anhydrous rare earth halide

Abstract

The invention provides a dehydration device for preparing an anhydrous rare earth halide. The dehydration device comprises a rotary furnace, and a furnace tube is arranged in the rotary furnace; a plurality of turning plates are arranged in the furnace tube, and a microwave generator and a resistance wire are arranged in the rotary furnace; both the microwave generator and the resistance wire are located on the outer side of the furnace tube; and a rotary transmission mechanism is arranged on one side of the rotary furnace, and connected with the furnace tube. According to the dehydration device for preparing the anhydrous rare earth halide, a hydrated rare earth halide is subjected to dehydration treatment through microwaves generated by the microwave generator; then, the microwave generator is turned off, and the lower resistance wire is turned on for high-temperature treatment; dehydrating agents are separated; the removed water and the dehydrating agents are condensed in a condenser after passing through a buffer tank, and the collected dehydrating agents can be recycled since the materials are not in contact with any metal in the treatment process; and therefore the preparation cost is saved.

Description

technical field [0001] The invention belongs to the field of rare earth halides, in particular to a dehydration device for preparing anhydrous rare earth halides. Background technique [0002] Anhydrous rare earth halides are important chemical reagents in the chemical and manufacturing industries. They have important and extensive application prospects in the fields of luminescent materials, heat insulation materials, hydrogen storage materials, ceramic materials, catalysis and military industries. However, the preparation of anhydrous rare earth halides requires the removal of impurities such as oxyhalides and oxides generated by rare earth halides due to their high deliquescence, which makes the preparation of anhydrous rare earth halides extremely difficult. [0003] At present, the equipment for preparing anhydrous rare earth halides by dehydrating hydrated rare earth halides mainly includes 1. Vacuum pit furnace, 2. Horizontal tube furnace, 3. Microwave drying box comb...

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Problems solved by technology

Among them, the vacuum pit furnace and the horizontal tube furnace adopt thermal radiation heating, and the equipment can realize the preparation of anhydrous rare earth halides in one step, but the production cycle is long, and a production cycle can reach 24 to 36 hours; while microwave drying Due to the use of the microwave rapid dehydration principle, the production cycle is shortened to a certain extent and can be completed within 20 hours. However, it needs to discharge and reload materials, which is more cumbersome in operation.

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