Topic
Jet mill
About: Jet mill is a research topic. Over the lifetime, 803 publications have been published within this topic receiving 5686 citations.
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01 Jan 2013
TL;DR: In this article, a matrix model of the classification process in a centrifugal air flow classifier with a fluidized bed is presented using matrix model to determine the cut size of a coarse product.
Abstract: The cut size determination on the basis of proposed matrix model of classification process in a centrifugal air flow classifier with a fluidized bed is presented using matrix model. The presented methodology of cut size determination is based on the precise measurement of the total mass of fed material and coarse product in experimental tests. Knowledge of the feed particle size distribution is also required. Considered classifier is a part of the fluidized bed jet mill. The presented cut size determination will allow to optimize mill work and prediction of particle size distribution of the classification products.
4 citations
Patent•
22 May 1992
TL;DR: A fine cellulose powder consists of rounded particles, has a viscosity average polymerization degree of 20 - 150, and exhibits a water absorption coefficient of 100 % or more relative to its own weight.
Abstract: OF THE DISCLOSURE A fine cellulose powder consists of rounded particles, has a viscosity average polymerization degree of 20 - 150, and exhibits a water absorption coefficient of 100 % or more relative to its own weight. A method of producing the fine cellulose powder comprises the steps of aging alkali cellulose to reduce its average polymerization degree and increase its friability, neutralizing the aged alkali cellulose, and pulverizing the result, preferably in a jet mill.
4 citations
Patent•
27 Oct 2010
TL;DR: In this paper, the authors proposed a method for recovering, smelting and reusing a base material generated in a jet mill procedure for sintered NdFeB production.
Abstract: The invention relates to a processing technology of a base material generated in a sintered NdFeB production process, in particular to a method for recovering, smelting and reusing a base material in a jet mill procedure for sintered NdFeB production, which solves the problem of the prior art that the base material generated in the jet mill procedure in the sintered NdFeB production process can not be processed. The method comprises the following steps: collecting, sealing and storing the base material from a jet mill; adding the collected base material from the jet mill to normal materials according to a certain ratio in the process of steel ingot batching, and then smelting the mixture to obtain steel ingot; crushing and shaping in a static pressure manner; and finally tempering and sintering. The processing method of the invention breaks through the traditional thinking of the existing processing method, and turns the existing traditional processing mode of recovering the directly scraped powder by a rare earth manufacturer and then purifying the rare earth material in the recovered powder by a chemical method into the mode of directly utilizing the powder.
4 citations
TL;DR: In this article, the authors developed a model for estimating particle friction against the wall of a jet mill nozzle, which was reduced to a definition of conventional force acting on particles in a polydispersed stream.
Abstract: In this study we develop a model for estimating particle friction against the wall of a jet mill nozzle. The computation is reduced to a definition of conventional force acting on particles in a polydispersed stream. It is assumed that energy losses due to friction are caused by multiple particle collisions against the nozzle walls. The proposed model is oriented to calculating jet mill nozzles and is much simpler than previously applied methods. A parametric study of the proposed model was carried out and the effect of particle friction on particle and gas velocities was derived.
4 citations
Patent•
25 Apr 1981
TL;DR: In this paper, the authors proposed a method to easily produce titled dispersion useful as an initiator for suspension polymerization by carrying out the production in the presence of a dispersant and in an atmosphere of an inert gas.
Abstract: PURPOSE:To easily produce titled dispersion useful as an initiator for suspension polymerization, by carrying out the production in the presence of a dispersant and in an atmosphere of an inert gas. CONSTITUTION:In producing an aqueous dispersion of an organic azo type polymerization-initiating compound such as 2,2'-azobisiso-butyronitrile or 2,2'-azobis(2, 4-dimethylvaleronitrile), in which dispersion, a major portion of said azo type compound is present in the form of fine particles having a particle diameter of about 10mu or below, said compound which is solid at ordinary temperature or below is pulverized into particles, particle diameter <=10mu, by a jet mill or the like. Then, the aqueous dispersion is prepared by dispersing the resulting fine particles into water in the presence of a dispersant such as polyethyleneimine, polyvinylpyrrolidone, methyl cellulose, carboxylmethyl cellulose, gum arabic or carrageenan in an atmosphere of an inert gas by the use of a homogenizer or a kneader.
4 citations