Grinding Mill Operation and Instruction Manual

Zenith Machinery Grinding system includes crusher, ball mill, vertical mill, air separator, classifier, piping device, bucket elevator, cyclones and material conveyor etc.For more than 20 years’ experience, Zenith Machinery has been the synonyms for outstanding quality and best service all over the world. Together with systematic research and development our efforts are aimed at:

Increasing capacity;

Increasing reliability;

Minimizing investment and operation cost;

Maintaining a high quality of the end product;

Reducing shutdown time required for installation and maintenance.

Operating principles of Grinding Mill

The raw materials are pulverized to particles in required size by jaw crusher and conveyed to storage bin by the bucket elevator. Vibrating feeder feeds fixed particles into the grinding room of the principal machine evenly and continuously. When those particles are grinded into powder, they are then taken away by airflow from the blower and classified by the analyzer. Those who reach the fine degree go through a pipe along airflow, and then into cyclone collector where they are separated. After the separation process, finished powder lot is outflow from powder pipe. Then, the airflow goes back to wind pipe via upper cyclone collector, to the blower. This grinder adopts closed cycle airflow system which is able to circulate and flow under positive, negative pressure states.

Grinding Mill System Instruction Manual

There is water contained in the materials. When grinding the materials, heat is produced. If the pipes are not sealed closely, the number of circulating airflow will increase. Therefore, the wind pipe between the blower and principal machine needs to be adjusted so as to balance the airflow and absorb unwanted airflow into bag dust remover. Collect fine powder brought in gearing drives central shaft to run the principal machine. On the upper end of the shaft equipped with grinding roll device. The grinding roll auto rotates due to friction effect while revolving around outwear. Materials are spaded into the gap between grinding roll and outwear when the spade and grinding roll rotate together. Therefore, a layer of padding material comes into being. A centrifugal force is produced when the layer of padding material rotates along with the grinding roll together, which will crush the materials to produce powder lot.

Grinding Mill Common Installation Problems

Cyclone collector has great influence to the performance of the grinder. Cyclone collector is rotating at high speed when airflow together with powder lots comes in. When airflow is separated from powder lots; it shrinks along the cone wall to the center, to the bottom of the cone. When an upwards moving airflow column is formed, powder lots are separated and fall down, and then are collected. The lower collector needs high sealing performance because upwards rotary airflow is under negative pressure. It needs to be strictly separated from outside air, otherwise collected powder lots will be taken away by core airflow, which will directly affect the grinder’s production capacity. To prevent this problem from happening, a powder-lock device is installed under the collector to separate outside positive pressure airflow from negative pressure airflow in the collector. The powder lock device is a very important part. If the powder-lock device is vacant, or its board is not sealed tightly, then no or less powder lots will be produced which will severely affect the grinder’s production capacity.