Method and apparatus for preparing rapid-solidified hydrogen-storage alloy powder material
A technology for hydrogen storage alloys and powder materials, which is applied in the field of preparation of rapidly solidified hydrogen storage alloy powder materials, can solve the problems of reduced hydrogen absorption capacity, consumption of protective gas, and increased production costs, and achieves increased productivity, oxygen absorption and activation The effect of ability improvement
Inactive Publication Date: 2009-04-08
江苏申建氢能新材料有限公司
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[0002] Chinese patent 952212560, U.S. patent USP6174345.B1 and Taiwan patent No. 133870 disclose a method for preparing a hydrogen storage alloy powder material, using vacuum (Ar) smelting-high pressure, high-purity nitrogen atomization, high-speed rotary disc centrifugal atomization and rapid condensation Powder making technology, can mass produce 200-350 mesh, spherical alloy powder with uniform composition and no segregation, and fine, ultra-fine high-purity alloy powder materials with a grain size of 0.05-5.0um, which are smelted with argon in the furnace The two gases are atomized with nitrogen, but when atomized with nitrogen, a layer of nitride film will be formed on the surface of the metal particles, which will reduce the hydrogen absorption capacity. It must be treated with alkali and hydrogenation to remove the surface nitride film and make the powder The yield is reduced, and the production cost is increased. At the same time, the above disclosed invention is a semi-continuous production method. After each furnace is produced, it is necessary to break the vacuum and open the furnace shell to feed, which not only consumes a large amount of protective gas, but also has low operation rate and high energy consumption. And make the product oxygen content and energy consumption high
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[0040] The invention provides a preparation method and device of a rapidly solidified hydrogen storage alloy powder material. The method includes the following steps:
[0041] (a) Pretreatment of raw materials, adjusting the composition of master alloys or alloys as raw materials, and adding rare earth metals and hydrogen storage alloy scraps to raw materials. use as figure 1 The shown fully continuous vacuum argon induction furnace high-pressure inert gas atomization powder making device, through its continuous feeding tank 5, control valve 4, and screw feeder 3, raw materials are continuously fed into its vacuum-argon-protected heat-conducting intermediate material Preheating is carried out in the tank 2, and the preheating temperature of the raw materials is 650°C.
[0042] (b) Put the preheated raw material directly into the vacuum-argon induction furnace 8 for smelting through the vibrating feeding plate 1 at the bottom of the heat-conducting intermediate material tank ...
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Abstract
The present invention provides a preparation method of quickly-coagulable hydrogen storage alloy powder and its equipment. Said preparation method includes four procedures of raw material preparation, smelting, making powder and hydrogenation treatment. Said invention also provides the concrete steps of the above-mentioned every procedure. Said equipment includes induction furnace or argon plasma arc furnace, atomized powder-making device and hydrogenation device, etc.
Description
Technical field: [0001] The present invention relates to a kind of preparation method and its device of rapid solidification hydrogen storage alloy powder material, specifically, what the present invention relates to is AB 5 Department and AB 2 The invention relates to a method for preparing hydrogen storage alloy powder and a device thereof. Background technique: [0002] Chinese patent 952212560, U.S. patent USP6174345.B1 and Taiwan patent No. 133870 disclose a method for preparing a hydrogen storage alloy powder material, using vacuum (Ar) smelting-high pressure, high-purity nitrogen atomization, high-speed rotary disc centrifugal atomization and rapid condensation Powder making technology, can mass produce 200-350 mesh, spherical alloy powder with uniform composition and no segregation, and fine, ultra-fine high-purity alloy powder materials with a grain size of 0.05-5.0um, which are smelted with argon in the furnace The two gases are atomized with nitrogen, but when a...
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IPC IPC(8): B22F9/10H01M8/22
CPCY02E60/50
Inventor 陈迂俞东平
Owner 江苏申建氢能新材料有限公司
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