Jet mill

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

Method of forming minute particle using jet mill

Abstract: PROBLEM TO BE SOLVED: To provide a grinding method, which is energy-efficient as much as possible, which brings the pollution reduction of a crushed material compared with crushing using a mechanical mill, improves the particle size distribution of the crushed material, and enables the execution of surface modification of the crushed material during crushing. SOLUTION: In order to form minute particles using a jet mill 1, a crushing gas has a pressure of ≤4 bar (absolutely) and a temperature lower than 100°C. COPYRIGHT: (C)2011,JPO&INPIT

Research on the Grinding Energy Density in a Jet Mill.

Abstract: Raw materials are used in many industrial technologies. The raw material frequently has to be prepared as an intermediate with an appropriate particle size distribution, which requires the use of grinding. In grinding processes, energy consumption is a very important profitability criterion for the applied particular size reduction technology. The paper describes the comminution process that takes place in the jet mill using a modified form of the thermodynamic theory of grinding. In this theory, new material characteristics have been added: the surface and volumetric density of grinding energy. The thermodynamic theory is a combination of the classical Kick’s theory and the modified form of Rittinger’s theory. The tested physical magnitudes are a measure of the energy consumption of the grinding process. They describe the energy that must be provided in the grinding process to overcome interactions between particles related to the volume and surface of the material. Knowledge of these magnitudes is necessary to model thermomechanical phenomena in the solid state. The paper presents the results of research on comminution in a jet mill, on the basis of which the values of the tested material magnitudes were determined. It is graphically shown how the values of the tested magnitudes depend on the grain size of the ground samples.

Comminution of a substance, especially a cardiovascular drug, comprises mixing the substance with lactose and comminuting the mixture in a jet mill

Abstract: Method for comminuting a substance comprises mixing the substance with lactose in a weight ratio of 100:10-85 and comminuting the mixture in a jet mill. An Independent claim is also included for a composition comprising a micronized substance and micronized lactose.

Jet grinding mill - for e.g. grinding, mixing and partial drying cement clinker, has pre-disintegrating chambers for large pieces

Abstract: A jet mill for grinds bulk material in countercurrent with itself, in which grinding injectors are installed opposite to one another directed in a grinding chamber connected to a separator having chambers for sepg. coarse and fine fractions in an intermediate product, with corresp. pipes for the transport of this product to an after grinding stage. At least one pair of disintegrating chambers are provided on opposite sides of the grinding chamber, each having built-in oppositely directed disintegrating injectors. The disintegrating chambers are connected to the grinding chamber so that their output pipes are connected to the inlet pipes of the grinding injectors, while these injectors are connected with the separator by means of the pipes connected to this for carrying the semi-finished product. Not only permits the larger pieces in the feed to be disintegrated and subsequently ground to fine material but has a lower specific consumption of energy-carrying fluid so that grinding costs can be reduced by 15-30%.