Powder Manufacturing Equipment

Abstract

The invention provides a powder manufacturing device. The operation cost can be reduced, the bias current, which flows in a vertical furnace, of flue gas can be inhibited, and the particles of raw materials that float in the furnace can be evenly heated by the provided powder manufacturing device. The raw material spouts (4a) that form the first raw material spout array (44) are arranged in an equal distance angle (A). The raw material spouts (4b) that form the second raw material spout array (46) are arranged in an equal distance angle (B). The distance angle (B) is smaller than the distance angle (A). The first raw material spout array (44) and the second raw material spout array (46) are staggeredly arranged to form a half distance angle and the gaps between the spouts are used to discharge the burning gas.

Description

technical field [0001] The invention relates to a powder manufacturing device. Background technique [0002] As a heating method for high-temperature firing, encapsulation, or spheroidization of raw material powder, there are known static heating methods in which powder is filled in a container with a certain capacity and heated in an electric furnace or a kiln, and raw material powder A floating heating method in which the powder is directly thrown into the high-temperature combustion exhaust and the raw material powder is heated in the high-temperature processing space. [0003] As an example of a device using a static heating method, a roller hearth kiln is known. A ceramic container called a saggar filled with powder is placed on a roller. The roller conveys the sagger and heats the sagger to a predetermined temperature (for example, refer to Patent Document 1). [0004] In addition, as an example of a device using a floating heating method, a powder manufacturing devi...

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Problems solved by technology

[0012] But from another point of view, Patent Document 2, for example, when the volume of the vertical furnace increases as the scale of the vertical furnace increases, the combustion exhaust gas flowing in the vertical furnace will It is prone to bias flow, and it is difficult to uniformly heat the particles of the raw material powder falling in the furnace in a floating state, and there is a problem that the thermal history of the powder is not uniform

[0013] In addition, there is also the following problem: the temperature distribution in the high-temperature processing space is not uniform, and the heat history received by each particle is not uniform depending on which place in the high-temperature processing space the particles of the raw material powder pass through.

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