Jet mill

About: Jet mill is a research topic. Over the lifetime, 803 publications have been published within this topic receiving 5686 citations.

Silica-coated metal particle and method for producing the same

Abstract: PROBLEM TO BE SOLVED: To provide silica-coated metal particles having excellent fluidity, and a method for producing the same.SOLUTION: Provided is a method for producing silica-coated metal particles comprising: a cracking step of cracking raw material silica particles in which the volume average particle diameter of the primary particles is 200 nm or lower in such a manner that bulk density reaches 450 g/L or lower with a jet mill; and a mixing step of mixing the silica particle obtained in the cracking step with metal particles having volume average particle diameters larger than those of the silica particles to stick the surfaces of the metal particles with the silica particles. By sticking the silica particles having the above characteristics to the surfaces of the metal particles, the stuck silica particles are interposed among the metal particles to improve the fluidity characteristics of the metal particles. The silica particles having the above characteristics being powder are separated almost to the primary particles in spite of their particle diameters in a nanometer order.

Manufacturing technique for high aspect ratio wollastonite powder

Abstract: Provided is a manufacturing method for high aspect ratio(1:15 or higher) wollastonite powder to more efficiently produce a filling agent applied to a variety of fields including PCB, paper, paint, and so forth The high aspect ratio wollastonite powder is manufactured by crushing rude ore; inputting the crushed rude ore into a single runner mill with help of a screw-type feeder until an average of 90±5 micrometer size powder is obtained; storing the powder in a storage tank; inputting again the wollastonite powder into a fluidised bed opposed jet mill with help of a screw-type feeder until an average of 6-15 micrometer size powder having both coarse particles and fine particles is obtained; and storing the resulting wollastonite powder in a storage tank

A method for homogeneous mixing uranium / plutonium mixed oxide

Abstract: A method for homogeneously mixing a uranium/plutonium mixed oxide which is used for the preparation of a uranium/plutonium mixed oxide fuel. The method comprises weighing a uranium oxide powder, a plutonium oxide powder, and a dry recovered powder prepared by grinding a uranium/plutonium mixed oxide sinter so as to give a predetermined plutonium enrichment; roughly mixing these powders together by means of a mixer; pulverizing and homogeneously mixing the roughly mixed powder by means of a jet mill; discharging the homogeneously mixed powder together with compressed air from the jet mill; and separating the mixed powder from the air by means of a first-stage cyclone to recover at least 90% of the discharged powder.

Powder treatment method, powder treatment device, and powder manufacturing method

Abstract: A powder treatment method and a powder treatment device capable of preventing powder from being adhered to the wall surface of the device when the powder such as medicine is moved on air. The powder treatment device (1) such as a jet mill comprises a heating means (13) along a wall surface (12) on which the powder is impacted. By the heating means (13), the wall surface (12) is heated to a temperature approximately more than the softening start temperature of the powder and lower than the melting temperature of the powder. The powder is moved on air in the powder treatment device (1).

Microstructure Characterization of Mechanically Activated Talc in Jet Mill Using XRD Line Broadening Technique

Abstract: Fine grinding process of talc was carried out in jet mill by varying the operational parameter such as feed rate, classifier frequency and grinding pressure. The size reduction and mechanochemical effect of talc take place simultaneously as jet mill is an energy intensive grinding mill. The minimum particle size obtained was 4.28 μm with span value of 1.30. The crystallinity values of ground product ranging from 71% to 91%. The crystallite size of the ground silica is ranging from 147.69 nm to 353.72 nm whilst the lattice strain was ranging from 0.08 to 0.20. After sonication process in ulrea sonic bath, the ground talc were in nano sheet where its thickness was around 20 nm.