System for preparing powder with gas phase and liquid phase

Abstract

The invention provides a system for preparing powder with a gas phase and a liquid phase. The system comprises a raw material heat treatment device, a mixing device and a spraying device; the mixing device comprises a mixing chamber, a first Laval spray pipe and a second Laval spray pipe; the first Laval spray pipe is arranged at the top of the mixing chamber in a penetrating mode, and the bottom of the mixing chamber is communicated with the second Laval spray pipe; the tail end of the second Laval spray pipe is introduced into the spraying device; the raw material heat treatment device mixes raw materials of different physical states and is connected with the mixing chamber of the mixing device through a guide pipe. By means of the system for preparing powder with the gas phase and the liquid phase, the raw materials can be fully mixed, the prepared powder material can be high in activity and small in powder granularity, and a composite powder material can be prepared.

Description

technical field [0001] The invention relates to the field of powder material production, in particular to a system for preparing powder in gas-liquid two-phase. Background technique [0002] Powder material is an important product form and plays an important role in national economy and national defense. Powder engineering has been widely used in building materials, machinery, energy, plastics, rubber, mining, metallurgy, medicine, food, feed, pesticides, fertilizers, papermaking, resources, environmental protection, information, aviation, aerospace, transportation, etc. various fields. [0003] At present, there are two methods of powder production: first, solid-phase powder production, such as grinding; however, the powder produced by ball milling has a wide particle size distribution and is not chemically active. Second, the liquid phase precipitation method prepares powder, which has chemical activity; but there are problems such as high impurity content, polluted wate...

AI Technical Summary

Problems solved by technology

[0003] At present, there are two methods of powder production: first, solid phase powder production, such as grinding; however, the powder produced by ball milling has a wide particle size distribution and does not have chemical activity

Second, liquid phase precipitation method to prepare powder, the powder has chemical activity; but there are problems such as high impurity content, polluting water and soil, unable to manufacture metal powder, metal composite powder, etc.

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