Raymond mill - a research on raymond mill

Raymond mill (Raymond Grinder) machine is widely used in mining, building materials, chemical engineering and metallurgy for power generation and processing. This Raymond mill is well designed to grind barite, calcite, potash feldspar, talcum, marble, limestone, ceramic and slag below scale 7 of Moth's hardness and 280 odd sorts of non-inflammable and non-explosive stuff. The final product size is in the range of 100-425 meshes, adjustable as required.

Raymond Mill is one grinding mill brought to China from foreign country and is very common at home. Raymond mill is designed as a ore powder or coal powder maker, such as crude materials ore, gypsum and coal ores. Raymond mill is geometrically similar form MPS grinding mill. From the appearance point of view, it looks like a vertical steel vessel with air intake, air outlet and feeding in the middle. But the difference between then is the rotating central line of Raymond mill is vertical but MPS grinding mill’s is nearly horizontal.

Our Raymond mill does well in loading the stuff for grinding evenly and continuously into the grinding chamber of the main frame. Depending on the centrifugal force in rotation, the roller swings outward and presses closely upon the ring. The shovel carries the stuff to the space between the roller and ring. When the roller rolls, the stuff is thus grinded.

After getting grinded, the stuff will get routed to the sorter along the wind belt of the blower and the rough powder will be put back to the grinder for regrinding. The fine powder flows into the product cyclone collector together with airflow and is expelled from the powder output pipe as product.

In the grinding machine, since the stuff may contain moisture to some extent, the heat generated during grinding makes the moisture evaporated; since the pipeline joints are not airtight, the external air is sucked in and the circulation air mass increases. In order to enable the grinder to work under negative pressures, the increased airflow is guided to the deduster anew sequentially to the atmosphere after purification.