DRY MAGNETIC ROLL SEPARATORS

Malvern Engineering Works, South Africa, offers high and low intensity magnetic roll separators required in the mineral, pharmaceutical and chemical industries.

Using over 75 years of process knowledge, computer added magnetic modeling software and in-house laboratory facilities, Malvern are able to offer flexible and cost-effective machines to suit our customer’s needs and objectives.

Malvern Engineering Works, South Africa, offers high and low intensity magnetic roll separators required in the mineral, pharmaceutical and chemical industries.

Using over 75 years of process knowledge, computer added magnetic modeling software and in-house laboratory facilities, Malvern are able to offer flexible and cost-effective machines to suit our customer’s needs and objectives.

Applications

  • Separation of weakly magnetic materials from non-magnetic feed streams (Silica/Quartz).
  • Separation of Ilmenite / Garnet / precious stones from feed material in Heavy Mineral sand applications.
  • Removal of ferrous contamination from raw materials used in the manufacture of ceramics and refractories.
  • Special applications  in the food Industries.
  • Pharmaceutical and Chemical Industries.

Magnetic Separator Benefits:

  • Low iron content
  • Better operating control
  • Significantly lower operating costs
  • Environmentally safe operations
  • Rapid return on investment

Magnetic Separator Benefits:

  • Low iron content
  • Better operating control
  • Significantly lower operating costs
  • Environmentally safe operations
  • Rapid return on investment

Design
Features

The design of a rare earth roll magnetic separator consisting of a rotating drum made of rare earth magnetic material, mostly neodymium-iron-boron (NdFeB), ensures the optimum combination of magnetic field strength and magnetic gradient to give the most effective separation.

Magnetic Roll Types

Low Intensity: Ferrite magnets are mainly used for scalping more magnetically susceptible particles before being fed t0 high-intensity rare earth magnetic rolls
High Intensity: Rare earth magnets are used for cleaning non-magnetic materials that have ferrous contaminations or to concentrate magnetic material in which non-magnetic particles like silica are the contaminants.

Magnetic Rolls

  • Roll Diameters: 100mm, 150mm, or 300mm
  • Roll widths ranging from 125mm to 1.5 meters.
  • Available in single or multiple stage configurations ( mag re-run or non-mag re-run).
  • The measured magnetic intensity for RE Rolls range: 11000 – 13000G.
  • Ferrite rolls mostly used as scalpers, with ranges 2000-2500G.
  • Computer simulation programs are used for magnet grade selection and magnet and pole piece thickness.
  • Roll widths ranging from 125mm to 2 meters

Material Feed System

  • Roll and Vibratory Feeders with feed control.
  • Drive options: Electric motor, Vibrating Motor and electro-magnetic.
  • Material of construction to suit the specific application.

Belts

  • PTFE – Coated Kevlar
  • Teflon – Coated Fabrics

Drives & Controls

  • Independent direct drives for each roll.
  • Design flexibility allows for Control Panels which could include: Variable speed drive, Speed display, Zero Speed Switch, Feed temperature indicator, Emergency stop.
  •  Directly coupled drives.
  • Reputed make geared-motor
  • Control panel with sophistication levels as desired by the customer.

Housing

  • Enclosures generally manufactured in mild steel, Stainless Steel and dust-free housings are available for special food/pharma and mineral applications.
  • All material contact surfaces supplied in stainless steel
  • Mechanically adjustable splitters with graduated scales.
  • Provision for the connection of the clients dust extraction system to the machine.
  • Safety provision for interlocked doors.
  • Discharge chutes – Mild Steel or Stainless steel.
  • Design flexibility allows for multiple product splitters and Corresponding outlets, Inspection / maintenance access points.
  • Enclosures generally manufactured in mild steel, Stainless Steel and dust-free housings are available for special food/pharma and mineral applications.
  • All material contact surfaces supplied in stainless steel
  • Mechanically adjustable splitters with graduated scales.
  • Provision for the connection of the clients dust extraction system to the machine.
  • Safety provision for interlocked doors.
  • Discharge chutes – Mild Steel or Stainless steel.
  • Design flexibility allows for multiple product splitters and Corresponding outlets, Inspection / maintenance access points.