MTW European Trapezium Grinding Mill

Product Features: Lower operational & maintenance costs, excellent environmental protection, better quality of finished products
Input Size: 0-50mm
Capacity: 3-50TPH
Material: Limestone, calcite, dolomite, petroleum coal, gypsum, barite, marble, talc, coal powder, etc.

Working Principle

After jaw crushers break large bulky materials to smaller ones, elevators work to send materials to the hopper. Then, by electromagnetic vibrating feeders, broken materials are evenly and quantitatively sent to the grinding chamber of MTW European Grinding Mill. After grinding, materials are blown away by airflow to the powder concentrator for classifying. Under the action of the impeller of powder selector, materials which fail to meet fineness would be sent back to grinding chamber to get another grinding while qualified powders would be collected by cyclone powder collector and discharged from the bottom as finished products. And, after that, the airflow would go into the fan along with the air return duct at the top of cyclone power collector. This system adopts a closed circuit and runs under positive and negative pressure. Because materials have a certain content of moisture, heat generated during grinding may lead air evaporation or swell in the grinding chamber so that the amount of airflow increases sharply. Besides, if the feed port and joints of pipelines are not sealed well, external air may intrude the grinding mill and lead imbalance of airflow. So, SBM arranges exhaust valves at the air outlet of the fan to induce redundant air into the bag filter. After purifying, the redundant air is discharged. This arrangement can achieve both the balance of airflow and the eco-friendly production.

MTW milling machine works as follows:

1) Large bulk materials by jaw crusher to the desired size, by the elevator to the hopper the material, and then the feeder will feed into the host uniformly continuous quantitative indoor grinding mill, grinding after powder will air rising wind machine, the separator grading, the powder fineness comply with the air through pipes into a large cyclone collector, were separated and collected by the powder discharge valve is the finished powder. Airflow from large cyclone powder inhalation top return air duct centrifugal fan, this machine is a closed loop system, the entire air flow, and is under negative pressure state circulating.

2) The working process of MTW milling machine is a whole host of work gear drive bevel gear through the central axis of rotation, the upper end of the shaft coupling the roller hanger, rack mounted roller device and the formation of swing pivot. Roller device not only around the central axis of rotation, it revolves around the grinding ring, roller itself due to the friction and rotation. Under the roller hanger mounted blade, its position at the lower end of the roller, the roller blade and process with the transfer of the material fed into the roller mill toss between the ring, forming a litter layer, the material layer by grinding roll outward centrifugal force generated by the rotation (i.e., pressing force) of the material is crushed, thereby achieve the purpose of milling.

3) MTW milling machine classifier speed motor driven by the rotation of the blades on the turntable, the role of the powder to form a hierarchical sub. Blade speed is based on the speed of finished powder particle size can be adjusted. When To obtain more fine-grained powder neutrons must increase blade speed, the blades in contact with the powder will increase, so that the powder is undesirable thrown to the outer wall and the air flow from the blade, coarse child due to its own weight fall mill chamber regrinding, qualified finished powder by a large blade cyclone powder collector with the air inhalation, and the powder flow is separated, the powder will be collected.

4) Large cyclone powder collector performance mill plays a very important role, when the airflow into the collector with a powder, the high-speed rotating state, to be separated from the powder flow and air flow to the center of the body wall contractions move to conical bottom while (since airflow natural length) to form a rotating updraft round note, when the powder is collected fall.

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