A method of hydrogen crushing

Abstract

A hydrogen crushing method. The rare earth alloy materials are hydrogen crushed through multiple groups of hydrogen crushing mechanisms set on the guide rail. After one group of reactions is completed, the rotating heating chamber used in the previous group can be put into the next group of hydrogen crushing. Used in the mechanism, not only can quickly heat the reaction furnace, save a lot of heat, but also improve the efficiency of powder making; and the heating chamber of each group of hydrogen crushing mechanism is equipped with a baffle, which is used to clean the heating chamber when the reaction is not in progress. Carrying out heat preservation is beneficial to save the time for preheating the heating chamber, thereby reducing the energy cost of the enterprise; The switch closes the baffle of the rotating heating chamber and the baffle of the rear heating chamber, and the heating reaction is completed; by setting the rotating heating chamber, not only can heating be performed quickly, but also the efficiency of powder making can be improved.

Description

technical field [0001] The invention relates to the technical field of rare earth magnetic material powder addition, in particular to a hydrogen crushing method. Background technique [0002] Hydrogen crushing furnace is a kind of non-mechanical force to form ingot or flake rare earth alloy material into powder, mainly through hydrogen and rare earth alloy (such as neodymium iron boron alloy Nd 2 Fe 14 B) Reaction, using the intergranular fracture and transgranular fracture produced by the rare earth alloy (such as NdFeB alloy) in the process of hydrogen absorption and desorption, resulting in the pulverization of the rare earth alloy, forming an embrittlement and fragmentation process, thus obtaining A kind of process equipment for rare earth alloy powder with a certain particle size, and when the hydrogen crushing furnace prepares rare earth alloy powder, it needs to be heated by the outside. At present, the way of heating the hydrogen crushing furnace is that the hydrog...

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Problems solved by technology

At present, the way of heating the hydrogen crushing furnace is that the hydrogen crushing furnace is in a rotating state, and the heating is carried out through the heating cover attached to the outside of the hydrogen crushing furnace. The heating cover is an open structure. After the first heating reaction is completed, the heating cover is retracted. , after the hydrogen crushing furnace is refilled, the heating mantle needs to be preheated again before heating, which not only wastes a lot of heat, but also causes high energy costs for the enterprise, and at the same time, the milling efficiency is low

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