Jet Mill (Jet Mill) Selection Guide Column

DATE：2022-03-10

WATCH：TIMES

In-depth understanding of (fluidized bed) jet mill - jet mill (jet mill) purchase guide column

It is hoped that through the introduction of this column, readers can enhance their understanding of jet mills, understand the selection of jet mills, master the common problems and treatment methods of jet mills, increase the output of jet mills, reduce energy consumption, and continuously optimize air flow The pulverizer meets the requirements of the jet pulverizer in actual production.

1. Pulverizing principle of jet mill

The pulverization principle of the jet mill is to use high-pressure compressed air or steam, and after it is released through the Laval nozzle, a supersonic airflow is generated.

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Open-loop crushing principle of jet mill

Jet mill closed-loop crushing principle

2. Classification of jet mill

There are five types of jet mills: flat type, circulating type, target type, collision type and fluidized bed type. At present, the most widely used are disc jet mill and fluidized bed jet mill. Each type of jet mill has its own characteristics. Relatively speaking, the disc type has the characteristics of simple structure and high crushing pressure. The disadvantage is that the output of a single model is limited. The fluidized bed jet mill has relatively good particle size distribution because of the fluidization space and classification rotor.

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Introduction of flat jet mill

Introduction of circulating jet mill

Introduction of target jet mill

Introduction of collision jet mill

Introduction of fluidized bed jet mill

3. Jet mill process

The common grinding processes of jet mill are divided into low temperature grinding, normal temperature grinding, high temperature grinding, closed loop (nitrogen or argon and other inert gas grinding. Different grinding processes are suitable for different materials. For example: resin materials are suitable for low temperature grinding; high water content materials are suitable for high temperature grinding Crushing; flammable and explosive materials are suitable for closed-loop crushing; lithium battery materials are suitable for closed-loop crushing, silicon carbon is suitable for closed-loop jet crushing, metal powder is suitable for closed-loop crushing and classification, lithium carbonate is suitable for open-loop conventional jet crushing, medicine is suitable for closed-loop jet mill, and pesticides are suitable for Open-loop jet pulverization, pesticides suitable for open-loop jet pulverization, food suitable for open-loop jet pulverization, non-ore suitable for open-loop jet pulverizer at room temperature, titanium alloy suitable for closed-loop jet pulverization, etc.

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Normal temperature jet pulverization process

High temperature jet pulverization process

Low temperature jet pulverization process

Closed-loop jet mill process

4. Detailed introduction of key components of jet mill

The key components of the jet mill, please click the link below for detailed links

Detailed introduction of grading wheel

Nozzle (Laval) Details

The key system of the jet pulverization system, please click the following link for the detailed link

Detailed introduction of feeding system

Detailed introduction of crushing system