Device for preparing metal powder by inert gas shielded plasmas

Abstract

The invention relates to the technical field of metallurgy and in particular relates to a device for preparing metal powder by inert gas shielded plasmas. The technical scheme is as follows: a plasma generator is connected with a reaction control chamber, wherein a charging ejector is communicated above the reaction control chamber; a cooling collecting chamber is communicated below the reaction control chamber; the charging ejector, the reaction control chamber and the cooling collecting chamber are connected with an inert gas storage bottle, respectively; and a gas escape tube is further arranged on the cooling collecting chamber. The device for preparing metal powder by inert gas shielded plasmas can be used for preparing various metallic simple substances with a melting point of 300 DEG C to 15000 DEG C, alloy crystals, amorphous particles and powder, so that the preparation is free of purity and oxidative deterioration influences needed by the smelting points and the activities of the target metals, controllable in a large-scale manner and capable of realizing the laboratory production and large-scale industrial production. Moreover, the device is low in energy consumption, simple in process, and capable of repeatedly utilizing the inert gases and centrifugal axle cooling liquids in the gas chamber without pollution.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a device for preparing metal powder with inert gas protected plasma. Background technique [0002] At present, there are mainly two methods for preparing metal powders with high purity and uniform particle size: centrifugal atomization method and mechanical atomization method, as follows: [0003] 1. Centrifugal atomization method [0004] The centrifugal atomization method is to pour molten metal from a crucible or ladle into a rotating disc or cup, or directly melt one end of a rotating metal rod, and the molten metal is broken into small droplets under the action of rotating centrifugal force, and then solidified into metal powder. [0005] 1.1 Rotating electrode atomization method (REP) [0006] The circular raw material rod of the consumable electrode rotates at high speed along its long axis, and the end extends into the atomization chamber and is melted by the arc o...

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Problems solved by technology

[0023] The present invention mainly aims at the shortcomings of the prior art, such as time-consuming and laborious, huge energy consumption and pollution, irregular and pure metal powder prepared, and cannot be used in the production of high-melting-point metal and high-activity metal powder, etc., and provides an applicable Preparation equipment for precious metals, alloys, active metals and metal powders that need to maintain high purity

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