High Tension Electrostatic separator

Product Overview
DXJ type series high voltage electrostatic separator is an advanced mineral sorting equipment independently researched and developed in China, which is specially designed for the selection of high value minerals. As an important equipment in the field of domestic mine beneficiation, this series of electrostatic separator has excellent performance in the efficient recovery of minerals with difference in electrical conductivity, such as scheelite, cassiterite, zircon, rutile, gold and silver, etc., and its market share ranks the first in the same category of products steadily.

Core Advantages

• Industry-leading sorting efficiency: the recovery rate of conductive minerals is 15-20% higher than that of traditional equipment.

• Compound electric field design: both corona electric field and electrostatic field, high sorting precision.

• Intelligent temperature control system: infrared heating + drum heating dual system, temperature control is accurate to ± 2 ℃.

• Modular configuration: provide double drums to six drums of various specifications, processing capacity of 800-2000kg / h

• Safety and reliability: over-current self-protection circuit + high-voltage discharge rod double protection

Working Principle

• Separation process
  Pre-treatment: minerals are heated to 150-250℃ in the hopper (30 minutes)
  Charge giving: minerals enter the corona electric field to obtain negative charge
  Minerals are separated:

  • Conductor minerals: rapid conduction charge → by centrifugal force → front receiving hopper

  • Non-conductor minerals: maintain charge → mirror adsorption → brush removal → rear receiving hopper

  • Semiconductor minerals: intermediate properties → middle hopper

• Electric field system
  Corona electrode: Φ0.32mm nickel-chromium resistance wire, adjustable spacing
  Static electrode: Φ30-35mm stainless steel tube, angle adjustable
  Working voltage: up to 60kV (oil-immersed transformer)

Equipment structure

• Mechanical system

• Electrical system

Technical Parameters

• Basic Parameters

• Sorting index
  Applicable particle size: 0.053-0.833mm (20-280 mesh)
  Temperature control: mineral material heating 150-250℃; drum temperature 50-60℃.
  Pole distance adjustment: electrode-drum spacing adjustable range 30-80mm

Operation procedure

• Start-up process
  Pre-heating stage: turn on the heating of the ore bucket (30 minutes); start the drum heating to 50-60℃.
  Voltage adjustment: High-voltage power supply from zero gradually rise to the working voltage (≤ 60kV)
  Ore feeding control: adjust the lower feeder to make the ore layer evenly cover 1/3 of the drum surface.

• Safety norms
  Discharge rod must be used to contact the electrode for 2-3 seconds before maintenance.
  It is forbidden to open the door of sorting room during operation
  Discharge and cut off all power supply after stopping the machine.

Maintenance points

• Routine Maintenance

• Key components life
  Corona electrode: 6-8 months
  Wool felt brush: 3-4 months
  Drum lining: 2-3 years

DXJ type high-voltage electrostatic s orter provides an efficient and reliable solution for high-value mineral selection through innovative composite electric field design and intelligent temperature control system. This equipment has become the key equipment in the field of processing strategic mineral resources in China, and its technical performance has reached the international advanced level.