Jet mill

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

Board -like supersonic speed jet mill of vertically collide

Abstract: The utility model discloses a board -like supersonic speed jet mill of vertically collide, including rubbing crusher cavity, the vertical setting of rubbing crusher cavity, the utility model disclosesthe injection pipe and the collision plate of the supersonic nozzle of ingenious design realize smashing a lot of of high rigidity material is high -efficient, at first are that the gas -solid mixescollision many times, then hit the impact plate to special design together, powerful smashing, efficient, kibbling powder particle size range is narrow, and key components is longe -lived, has solvedtraditional fluidized bed airflow pulverizer, only utilizes gas material to mix, inefficiency, disadvantage that output is low, in addition the utility model discloses avoided the horizontal to smash,the gas -solid compound body receives effect of gravity in the motion process, produces the skew of collision, causes wearing and tearing asymmetric, the fast disadvantage that became invalid, and kibbling powder particle size range is narrower simultaneously, the utility model discloses the range of application is wide, is applicable to to smash like high rigidity powders such as silicon monoxide powder, silica powder industry ceramic powder, electron ceramic powder, various silicon powder.

Study on Internal Structures and Numerical Simulation of Internal Cavity in a Fluidized Bed Opposed Jet Mill

Abstract: The paper presents the internal structures and performance features of the fluidized bed opposed jet mill based on the jet nozzles structure, impeller types, feeding inlet and bottom structure. Numerical simulation in the cavity of a jet mill whose internal diameter is 200 mm is achieved by the CFD software Fluent to overcome design blindly. The contour maps of static pressure, velocity distribution and path lines for flow-field of jet air in the cavity of the mill are presented by the calculated results. The method can help obtain the optimal design for this kind of jet mill.

Method and apparatus for processing and using the seeds of leguminous plants at a feed-production factory

Abstract: The invention relates to a method and apparatus integrated in a feed-production factory for processing and using the seeds of field pea-type leguminous plants. The seed of a pea-type plant is dehulled in a hulling device, crushed in a crusher, and finely ground in a pregrinder and in a jet mill. The flour is air separated in air classifiers into two or more fractions so that the starch granules originating from cotyledon cells are substantially included in coarse fractions and the protein granules substantially in fine fractions. For facilitating the fractionation, there is used a predetermined, selected variety of the pea-type leguminous plant. By effecting the grinding with a jet mill grinding technique it may be economically feasible to reach a sufficiently small particle size without subjecting the product to thermal injuries. The process is integrated as a part of the feed production of a feed factory in a manner that at least some of the flour fractions are administered into a mixed feed being prepared. The invention includes proteinaceous pea feeds including at least 35% pea protein.

Production of propolis food and propolis food

Abstract: PROBLEM TO BE SOLVED: To provide a process for the production of atomized or colloidal propolis and obtain a propolis food prepared by the process. SOLUTION: Propolis collected from beehive is atomized and formed in colloidal form by a physical pulverization means such as rolling ball mill, vibration mill, tower mill, medium mixing mill, roller mill, high-speed rotary mill, jet mill, planetary mill or attritor. A colloidal solution of propolis rich in fine particles of <=0.1μm diameter can be produced e.g. by using a planetary mill.

Sulcis Coal Water Jet Assisted Comminution

Abstract: This study has sought to verify the effectiveness of high-speed water jets on solid minerals grinding. To this end, an innovative gyratory crusher called HERA (High Energy Reduction Apparatus) has been designed and employed. The experiment has been carried out on samples of sub-bituminous coal extracted from the Sulcis coal basin (Sardinia, Italy). The experiment has aimed to examine and evaluate the effects of high-speed water jets on the milled product. These grinding tests have returned carbon suspensions in water, which could be used to power fluidized bed combustors. The parameters used to evaluate the adequacy of the assisted water jet comminution are: jet mill pressure, nozzles size, water flow rate, jets hydraulic power and specific energy consumption. The effects of preliminary water imbibition of coal samples have also been considered. The results have shown that the synergic combination of hydraulic and mechanical energy can have positive effects on grinding.