A hydrogen crushing furnace

Abstract

The invention relates to a hydrogen breaking finance. According to the hydrogen breaking furnace, a furnace door 4 is arranged at the front end of a furnace body 8; a pneumatic control system 21 and a vacuum generation system 22 are respectively communicated with the furnace body 8 through gas pipelines; a heating chamber 7 is arranged in the furnace body 8; a reaction material barrel 15 is arranged in the heating chamber 7; a water-cooling air fan 13 is arranged at the back end of the furnace body 8; gas filter plates 18 are respectively arranged at the two ends of the reaction material barrel 15; a ventilation hole 5 is formed in the front end of the heating chamber 7; a circular hole is formed in the back end of the heating chamber 7; a rotating system for driving the reaction material barrel to rotate is arranged outside the furnace door 4. The invention aims to provide equipment for crushing a rare earth alloy, which has a better vacuum effect, higher safety, higher hydrogen breaking efficiency, and smaller and more uniform hydrogen crushed powder particle size. According to the equipment, full-automatic operation process is adopted; at a standard operating temperature, continuous processes of fully absorbing hydrogen and expanding, and completely dehydrogenating and decomposing of the rare earth alloy, particularly a neodymium-iron-boron alloy, are realized in a closed environment.

Description

technical field [0001] The invention relates to a hydrogen crushing device for rare earth alloys, in particular to an internal heating type hydrogen crushing furnace. Background technique [0002] Hydrogen crushing furnace is a kind of ingot or flake rare earth alloy material formed into powder by non-mechanical force. Mainly through the reaction of hydrogen with rare earth alloys (such as NdFeB alloy Nd2Fe14B), the intergranular fracture and transgranular fracture generated by the rare earth alloy (such as NdFeB alloy) in the process of hydrogen absorption and hydrogen release lead to rare earth alloy powder It is a process equipment that forms an embrittlement and crushing process to obtain rare earth alloy powder with a certain particle size. [0003] The existing hydrogen crushing furnace either has a long product production cycle, which generally takes 12-20 hours; or lacks safety alarms and pressure relief devices, resulting in poor safety; generally through mechanica...

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Problems solved by technology

[0003] The existing hydrogen crushing furnace either has a long product production cycle, which generally takes 12-20 hours; or lacks safety alarms and pressure relief devices, resulting in poor safety; generally through mechanical transmission, resulting in poor sealing performance and low vacuum; the alloy is in contact with hydrogen Large area, powder accumulation, easy to cause uneven particle size and poor quality of the produced products; the above reasons will cause the powder to fail to meet the growing demand for high-performance product processing

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