Raymond grinder is a kind of grinder mill is effective closed-circuit high fineness powder manufacturing equipment applicated in small and medium mining, silicate and chemical, building-material, metallurgy, refractory material, pharmaceuticals and lime industry. It is a new style powder grinding machine, which is more advanced than ball grinder and much appreciated in many fields due to its domestic leading level in each technical specification.



This grinder mill adopts advanced structure of similar products from abroad, and is updated and designed based on large Raymond grinder. Under centrifugal force, grinding roller rolles closely on grinding ring, which shall not affect yield and fineness of ground powder in the case that grinding roller and ring are worn to a certain degree. Grinding roller and Grinding ring enjoy a long update cycle, which eliminates disadvantage of short update cycle for easily damaged parts on centrifugal crusher. In this grinder, pneumatic flow goes circularly through fan--grinding enclosure--cyclone separator—fan. Therefore, dust in this machine is less than that in high speed centrifugal grinder, and operation workshop is relatively clean without environmental contamination.

Features:
1. With a small floor area and good entirety, Raymond grinder can operate independently and automatically from piece crushing to product packaging.

2. Powder ground by Raymond grinder can be screened at a rate of above 99%, which other grinders are unable to achieve.

3. Electromagnetic-vibrating feeder is easily regulated, small in volume and light in weight. It saves oil and electricity, and enjoys convenient maintenance. The adoption of it shall ensure the uniformity of feeding.

4.Electricity is central controlled without manual operation in host machine room.

5. Host machine driving unit adopts closed reduction box, which achieves stable transmission and reliable rotation without leakage of oil.

6. Shovel tool rest for host machine keeps in touch with materiel while rotating. It is composed of two parts, of which bracket may be changed after abrasion through dismounting bolts connected.

Grinder Mill Working principle:
During operation, add materiel into grinder from feed hopper aside the enclosure. Grinding roller unit on the star rack hung on the host machine shall do revolution around vertical axis and rotate. Under centrifugal force while rotating, grinding roller shall swing outward and shall be compressed onto grinding ring. At this moment, shovel tool shall shovel materiel into where grinding roller and grinding ring contacts. Rotation of grinding roller shall grind materiel. After grinding, the powder shall be delivered into analyzer for classifying by circulating air produced by a blower.

Materiel that is too thick shall be re-ground; fine powder that is acceptable shall be flown into product cyclone powder collector and discharged from outlet. This is final product. Air current is circular and returned into blower through the pipe on top of the big cyclone collector. It flows under negative pressure. Increased air current shall be piped out through off-gas line into small cyclone collector for purification.

Raymond Grinder Detail Specification: