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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TL;DR: In this article, the influence of grinding pressure, holdup and milling time on the performance of a spiral air jet-mill operating in a batch mode, with respect to the particles, was studied by means of experiments, indicating that mean size is primarily dependent on the energy supplied.
8 citations
TL;DR: This study analyses the identifiability of the population balance model developed for the air jet mill and shows that the model is practically non-identifiable for the situations in which the particle size measurement is available only at the end of the milling.
8 citations
Patent•
13 Apr 2007
TL;DR: In this article, the relative distance a/dDuse between at least approximately concentric milling jet inlets whose center lines intersect at least in one point is adjusted in accordance with the pressure of the working medium, a representing the jet length and dDuse representing the nozzle diameter.
Abstract: The invention relates to a method for producing very fine particles by means of a jet mill (1). The relative distance a/dDuse between at least approximately concentric milling jet inlets (5) whose center lines intersect at least approximately in one point is adjusted in accordance with the pressure of the working medium, a representing the jet length and dDuse representing the nozzle diameter.
8 citations
Patent•
19 Jul 2006
TL;DR: In this article, a modified ultrafine modification method for CaCO3 with dry mechanical force and chemical way comprises: dewatering the fine CaCO 3 powder in drying tank at 100-110 Deg; mixing the CaCO and stearic acid as modifier with mass as 0.5-5.0% of the Ca CO3 evenly; loading the mixed material into the jet mill to obtain the target with high activation rate and light CaCO-2a-m more than 95%.
Abstract: The related ultrafine modification method for CaCO3 with dry mechanical force and chemical way comprises: dewatering the fine CaCO3 powder in drying tank at 100-110Deg; mixing the CaCO3 and stearic acid as modifier with mass as 0.5-5.0% of the CaCO3 evenly; loading the mixed material into the jet mill to obtain the target with high activation rate and light CaCO3-2a–m more than 95%. Wherein, the crystal phase structure of the calcite as main mineral phase produces distortion. This invention supplies a gap both at home and abroad.
8 citations
Patent•
15 Oct 1984
TL;DR: In this paper, an opposed type jet mill is proposed, in which a coarse grain return pipe for feeding coarse grains separated in an airflow classifying chamber to a regrinding raw material accelerating injector is disposed so that the angle formed between the return pipe and the accelerating injectors may become an acute angle of 60 degrees or less.
Abstract: An opposed type jet mill, in which a discharge pipe for feeding a mixture flow of high speed gas and ground material discharged from a grinding chamber to an airflow classifying chamber is provided nearly at an equal distance from a new raw material accelerating injector and a regrinding raw material accelerating injector disposed on the left and right hands, respectively, of the grinding chamber and at right angles to a common center line of the both injectors, and a coarse grain return pipe for feeding coarse grains separated in said airflow classifying chamber to the regrinding raw material accelerating injector is disposed so that the angle formed between said return pipe and said regrinding raw material accelerating injector may become an acute angle of 60 degrees or less, which jet mill can reduce energy loss of gas flows and yet can achieve micro-fine grinding.
8 citations