Raymond Mill

Product Features: Lower operational & maintenance costs, excellent environmental protection, better quality of finished products

  • Input Size: 0-55mm
  • Capacity: 2.7-83TPH
  • Material: Limestone, calcite, dolomite, petroleum coal, gypsum, barite, marble, talc, coal powder, etc.

According to accumulation and experimental analyses of on-site test data for more than thirty years, SBM, a Chinese grinding mill manufacturer, has researched and developed the fifth-generation pendulous hanging grinding mill – MB5X grinding mill. All non-combustible and non-explosive brittle mineral products whose Moh's hardness are below Grade 7 and water content below 6% could be ground by this grinding mill.

Working Principle

After hammer crushers (or jaw crushers) break large bulky materials to smaller ones, elevator works to send materials to material hopper. Then, by electromagnetic vibrating feeder, broken materials are evenly and quantitatively sent to the grinding chamber of MB5X Pendulum Roller 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.

    Raymond mill structure

    Raymond Mill mainly consists of a host machine, a fineness analyzer, a blower, a finished cyclone powder collector, a bag filter, and a connecting duct. According to the user’s needs, it can be equipped with crushers, hoists, storage bins, electromagnetic vibration feeders and electrical control cabinets and other auxiliary equipment.

    Brief History

    1906 CVGrueber created Curt Von Grueber machinery factory in the southern suburbs of Berlin. 1925 ECLoesche summed up the first generation of Raymond coal mill shortcomings about use features and structure and decided to further improve the structure of raymond mill, then developed a grinding mill opposite principle and this is called modified Raymond. Until now, Raymond Mill has great changes intechnology and the appearance and it is very popular in the masses of customers.

    Raymond Mill Common Sense

    hardness and mohs hardness

    Hardness: because it is destructive testing, so the original unpolished precious stone or ore can be used. there are two types of hardness scales, one is absolute hardness, and the other is a Mohs hardness (a relatively hardness).

    Mohs hardness: ten minerals in common with each other as a standard scraping hard to distinguish what what soft, mineralogical or gemological customarily been used on the Mohs hardness. Mohs hardness in ten stages as follows: talc, gypsum, calcite, fluorite, apatite, orthoclase, quartz, topaz, corundum, diamond.

    mesh concept

    Mesh is greater, indicating the material finer granularity; mesh is smaller, the larger particle size. Sieve size particles that can pass through the screen mesh size to 1 inch (25.4mm) width of the screen indicates the number of the mesh, so called mesh.

    Product Application

    Raymond mill is a commonly milling equipment, mainly used for barite, calcite, potash feldspar, talc, marble, limestone, dolomite, fluorite, lime, activated clay, activated carbon, bentonite, kaolin, cement, phosphate rock , plaster, glass, insulation materials, etc. Mohs hardness of not greater than 9.3 and humidity below 6% of non-explosive mineral, chemical, construction and other industries more than 280 kinds of material for high fine powder generation and processing.

    Product Advantage

    • High-performance separator and optimised airflow guarantee large separation efficiency and lower strain reduction for power cost savings.
    • Unusually huge rollers allow coarse feed and make sure a thick grinding bed for greatest uptime.
    • All affect forces and dynamic reactions are compact and vertical and therefore simple to accommodate prevents mill stops.
    • Segmented put on components for table and rollers enable utilization of one of the most wear-resistant supplies and/or hardfacing for lengthy daily life.
    • Reversible roller segments be certain large materials utilisation.
    • Feed sluice assures very low false air movement and regular feed movement for minimal electrical power consumption and optimum mill manufacturing.
    • Raw mill is very easily adaptable to large airflow demanded by primarily moist or simple to grind materials.

    Operational Principle

    Raw mill makes use of strain and shear produced in between the rollers as well as the rotating table to crush and grind raw supplies. Feed materials is directed onto the grinding table through the feed chute. The rotation in the grinding table accelerates the materials in the direction of the grinding track and passes it beneath the rollers. Coarser materials and larger humps drops with the nozzle ring ¨C and it is finally recirculated to the feed materials inlet. Moisture evaporates just about right away because the fuel stream carries the finer portion of materials towards the separator. The separator makes it possible for materials which has reached the expected fineness to depart the mill and sends oversized materials back for even further grinding.

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