High Tension Electrostatic Separator

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Product Details

High Tension Electrostatic Separator (DXJ Series)

The High Tension Electrostatic Separator (also known as High Voltage Roll Separator) uses the difference in Electrical Conductivity to separate minerals. It creates a composite electric field (Corona + Static) up to 60kV.

It is the key equipment for separating conductors (Rutile, Ilmenite, Cassiterite) from non-conductors (Zircon, Monazite, Quartz) in Beach Sand and Rare Earth processing plants.

Working Principle: Conductivity Difference

Separation based on how fast minerals lose their charge.

Charging

Dried minerals are fed onto a rotating earthed drum. They pass through a Corona Field (generated by a high-voltage wire) and are bombarded with ions, becoming negatively charged.

Conductors (Rutile)

Conductive minerals lose their charge quickly to the drum. Centrifugal force throws them away from the drum surface into the conductor chute.

Non-Conductors (Zircon)

Non-conductive minerals retain their charge. They are "pinned" to the drum surface by the electrostatic image force and are brushed off at the back.

Technical Choice: Electrostatic vs. Magnetic Separation

Why do you need both in a mineral sands plant?

Feature	Electrostatic Separator	Magnetic Separator
Separation Property	Electrical Conductivity.	Magnetic Susceptibility.
Typical Separation	Rutile (Conductor) vs. Zircon (Non).	Ilmenite (Mag) vs. Rutile (Non).
Pre-condition	Must be Hot & Dry (>100°C).	Dry (Temp doesn't matter).
Stage	Final Cleaning.	Roughing or Cleaning.

Core Advantages

1. High Voltage (60kV)

Equipped with a 0-60kV adjustable high-voltage generator. The composite field (Arc + Static) ensures efficient separation of difficult minerals.

2. Modular Drums

Available in 2-drum or 4-drum configurations. You can set the first stage for Roughing and subsequent stages for Scavenging or Cleaning in one machine.

3. Heating System

Built-in heaters in the feed hopper and drums ensure the material stays dry and warm (100-200°C), which is crucial for electrostatic conductivity.

Typical Applications

● Zircon & Rutile:
Separating Rutile (Conductor) from Zircon (Non-conductor). See Zircon Solution.
● Tin & Monazite:
Separating Cassiterite (Conductor) from Monazite (Non-conductor) and Scheelite.
● Ilmenite Cleaning:
Removing silicate impurities (Non-conductors) from Ilmenite concentrate.
● Tantalum-Niobium:
Final cleaning of Coltan concentrates to remove Garnet and Quartz.

Technical Parameters (DXJ Series)

1. Model Specifications

Model	Drum Configuration	Capacity (kg/h)	Power (kW)	Weight (kg)
DXJ-2	Φ320 × 1500 × 2	800 - 1200	7.5	1500
DXJ-4	Φ270 × 1500 × 4	1200 - 1600	16.5	2800
DXJ-6	Φ220 × 2000 × 6	1600 - 2000	19	3400

2. Electrical & Performance Data

Parameter	Value / Range
Working Voltage	0 - 60 kV (Adjustable)
Feed Size	0.053 - 0.833 mm (20-280 Mesh)
Material Temp	150 - 250 °C (Pre-heating)
Drum Speed	40 - 140 rpm (Variable Speed)
Electrode Spacing	30 - 80 mm

Component Life

Corona Electrode Wire: 6 - 8 Months.
Wool Felt Brush: 3 - 4 Months.
Drum Lining: 2 - 3 Years.

Frequently Asked Questions (FAQ)

Q: Why must the ore be hot?

A: Heating removes surface moisture and enhances the electrical conductivity difference between minerals. If the ore is cold or damp, electrostatic separation will fail.

Q: Is it safe to operate at 60kV?

A: Yes. The machine is fully enclosed with safety interlocks. It features over-current protection and automatic discharge rods. Operators must follow safety protocols and never open the door while running.

Q: Can I process wet material?

A: Absolutely not. The feed must be bone dry. You need a Rotary Dryer before this machine to heat the sand to ~120°C.

Final Stage Purification Expert

Achieve 98%+ purity for Zircon and Rutile concentrates.
Contact us for the DXJ series selection and pricing.

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