Air Classifying Mill

The material is uniformly sent into the grinding chamber by the feeding system, and is strongly impacted by the high-speed rotating grinding disc. At the same time, it is subjected to the centrifugal force to collide with the crushing ring gear, and is subjected to various comprehensive forces such as shearing, friction, and collision. The material is ground, and the crushed material moves to the classification area with the airflow. The coarse and fine materials are separated through the classification wheel adjusted by the frequency conversion.

Working Principle

The ring roller mill uses the principle of impact, extrusion and grinding to pulverize the material.

The ring roller mill is equipped with multi-layer grinding rollers and grinding rings, and the material first falls between the uppermost grinding roller and the grinding ring. There is a large movable gap between the grinding ring installed on the grinding ring bracket and the pin shaft. When the material passes through the gap between the grinding ring and the grinding ring, the material will be crushed by the impact, extrusion and grinding of the grinding ring. When the material passes through the multi-layer grinding rollers and grinding rings from top to bottom, the material will be ground many times. Under the action of gravity, the pulverized material falls to the bulk material tray at the bottom and is thrown into the air flow channel, and is brought into the classification area at the top by the air flow; the classification wheel classifies the powder, and the qualified fine powder passes through the classification wheel and enters the The dust collection system collects, and the coarse material is thrown to the inner wall of the shunt ring, and then falls back into the crushing area for crushing.

Features And Benefits

Integration of grinding and classifying, classifying wheel is adjusted to obtain ideal particle, and the classifying rotor can be installed horizontally or vertically.
Different types of grinding disc are used based on characteristics of materials to obtain different grinding forces and improve grinding efficiency.
Key parts are made of ceramic, ensuring non-contact with metal throughout the grinding for high purity of the final product.
It can produce products with multiple particle sizes at one time; grinding is in closed system, low dust and noise, clean and environmentally friendly production process.

Technical Parameters

Technical parameters of MJW-L series air classifying mill

MODEL	300	400	500	700	800	900	1000	1100	1250	1500	2000
Grinding Motor Power（kw）	7.5	22	30	45	55	75-90	90	110-132	132-160	200-250	355
Grinding Rotating speed（rpm）	7500	4800	4200	3000	2800	2350	2100	1920	1800	1500	1120
Classifying Motor Power（kw）	2.2	4	5.5	7.5	7.5-11	15	15-22	22-30	22-37	45-55	55-75
Classifying Rotating speed（rpm max）	4500	3250	3000	2920	2500	2200	2000	1800	1800	1500	1150
Fineness (um)	5 - 300	5 - 300	5 - 300	5 - 300	5 - 300	5 - 300	5 - 300	5 - 300	5 - 300	5 - 300	5 - 300
Capacity （kg/h）	2-100	10-1000	15-1500	20-2000	25-2500	40-4000	45-4500	60-6000	75-7500	100-10000	15-15000

Technical parameters of MJW-W series air classifying mill

MODEL	300	400	500	600	700	1000	1250	1500
Grinding Motor Power（kw）	7.5	22	30	37	45	75-90	132-160	200-250
Grinding Rotating speed（rpm）	7500	4800	4200	3500	3000	2100	1800	1500
Classifying Motor Power（kw）	3	5.5	7.5	15	15	22	30	45
Classifying Rotating speed（rpm max）	8500	6000	4650	4000	3300	2400	1900	1500
Fineness (um)	5 - 300	5 - 300	5 - 300	5 - 300	5 - 300	5 - 300	5 - 300	5 - 300
Capacity （kg/h）	2-100	10-1000	15-1500	18-1800	20-2000	45-4500	75-7500	100-10000

Technical parameters of MJW-A series air classifying mill

MODEL	300	450	500	700	900	1100
Grinding Motor Power（kw）	30	22	30	45	75-90	110-132
Grinding Rotating speed（rpm）	7000	4350	3850	2760	2350	1920
Classifying Motor Power（kw）	1.5	5.5	5.5	7.5	15	30
Classifying Rotating speed（rpm max）	4500	3200	3000	3000	2200	2000
Fineness (um)	10 - 300	10 - 300	10 - 300	10 - 300	10 - 300	10 - 300
Capacity （kg/h）	5-100	20-1000	30-1500	40-2000	80-4000	120-6000

Technical parameters of MJL-W series air classifying mill

MODEL	500	600	800	1000	1250	1500
Grinding Motor Power（kw）	30	37	55	90	160-200	250
Grinding Rotating speed（rpm）	4200	3380	2800	2100	1800	1500
Classifying Motor Power（kw）	5.5	7.5	7.5-11	15-22	22-37	37-45
Classifying Rotating speed（rpm max）	4650	4000	3000	2400	1900	1500
Fineness (um)	5 - 300	5 - 300	5 - 300	5 - 300	5 - 300	5 - 300
Capacity （kg/h）	15-1500	20-2000	25-2500	45-4500	75-7500	100-10000