Closed-cycle high-temperature airflow reaction device

Abstract

The invention discloses a closed-cycle high-temperature airflow reaction device. The device comprises a fan, a waste heat recovery device, a pressure balancing device, a secondary heater, a feeder, an accelerator, a high-temperature reacting furnace, a three-level heater, a cooling system, a dedusting system and a discharging device. Continuous reaction and continuous sintering production can be realized by virtue of a vertical box reaction cavity, the investment cost of equipment is reduced greatly, the closed-cycle high-temperature airflow reaction device has the characteristics of compact structure, convenience in operation and maintenance, good controllability, energy conservation and emission reduction, remarkable reaction effect, no material retention or piling, short reaction time, high rate of finished products, exquisite design and high practicability and can fully utilize heat of exhaust, and the investment to mated infrastructure is less.

Description

Technical field [0001] The invention relates to the field of powder sintering, in particular to a closed-circuit circulating high-temperature gas flow reaction device. Background technique [0002] In the prior art, the device commonly used when sintering powder is a pusher furnace. The powder is placed in the crucible of the pusher furnace. After the sintering is completed, the material is manually fetched, and the crucible is placed on the pusher. During the process, the push plate needs to be moved continuously. On the one hand, it is necessary to reclaim and discharge each time the sintering is completed. Continuous production cannot be realized, and the production efficiency is low. On the other hand, it is necessary to constantly replenish ammonia decomposition gas to maintain the push plate furnace. The inner atmosphere needs to be flushed with nitrogen before heating up, and the gas cannot be circulated efficiently, which makes the operation cost higher. Summary of the i...

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Problems solved by technology

[0002] In the prior art, the device usually used for sintering powder is a pusher furnace, the powder is placed in the crucible of the pusher furnace, after the sintering is completed, the material is manually taken out, and the crucible is placed on the pusher, and the work During the process, the push plate needs to be moved continuously. On the one hand, it is necessary to take and discharge materials every time sintering is completed, which cannot realize continuous production, and the production efficiency is low. On the other hand, it is necessary to continuously replenish the ammonia decomposition gas to maintain the push plate furnace. The atmosphere in the furnace needs to be flushed with nitrogen gas before heating up, and the gas cannot be recycled, which makes the operation cost higher

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