Application
Magnetic Separators for Potassium & Sodium Feldspar
PTMS supplies wet slurry and dry powder magnetic separators that remove iron and iron-bearing minerals from potassium and sodium feldspar, so feldspar can be sold into glass and ceramic markets.
The problem
- Feldspar is an important raw material for ceramics and glass, and higher-grade glass and ceramic products need low-iron feldspar.
- Many feldspar deposits have a high iron content and must be purified before use.
- Iron minerals, biotite, amphibole and tourmaline in feldspar are only weakly magnetic, so a strong (high-intensity) magnetic field is needed to separate them.
How PTMS solves it
On wet lines, a permanent magnetic separator first removes strongly magnetic material and an electromagnetic slurry separator then removes the fine and weakly magnetic iron. On dry lines, dry electromagnetic powder separators and belt-type magnetic separators clean feldspar powder and granules without water.
Recommended PTMS models
Potassium Sodium Feldspar Magnetic SeparatorKaolin, Feldspar & Quartz Separators
750 Water Cooling Wet Type MagnetElectromagnetic Separators
Water-Cooled Electromagnetic Separator SeriesWet / Slurry Magnetic Separators
Electromagnetic Slurry Magnetic Separator SeriesElectromagnetic Separators
Electromagnetic Slurry Magnetic Separator Type 1000Wet / Slurry Magnetic Separators
Oil Cooling Electromagnetic Slurry Magnetic Separator 1000 ModelWet / Slurry Magnetic Separators
Oil-Cooled Electromagnetic Separator SeriesElectromagnetic Separators
Electromagnetic Dry SeparatorElectromagnetic Separators
Electromagnetic Dry Powder Magnetic Separator SeriesElectromagnetic Separators
Electromagnetic Dry Powder MachineElectromagnetic Separators
Electromagnetic Bentonite Powder Magnetic SeparatorDry Powder Magnetic Separators
Belt Conveyor Type Magnetic SeparatorConveyor Belt Magnetic Separators
Fully Automatic 3-Layer Belt Magnetic SeparatorConveyor Belt Magnetic Separators
Matrix for Kaolin and FeldsparAccessories & Spare PartsTypical process
- Crushing Raw ore → feeder → jaw crusher → vibrating screen → cone crusher.
- Screening High-frequency vibrating screen and drum screen.
- Pre-separation Permanent magnetic separator removes strongly magnetic material.
- Slurry pool Material is held as slurry and fed at a steady rate.
- Electromagnetic separation Electromagnetic slurry separator removes fine and weakly magnetic iron (fine powder product).
- Dewatering Belt dehydrator, then finished product.
Conventional wet feldspar line as published by PTMS. Dry lines (for example a published 200 tons/day dry powder production line) use dry electromagnetic powder separators and belt magnetic separators instead.
Reference projects
- Indian Feldspar Wet Processing Line, Morbi: Powder size 200 mesh, moisture 18%. Separator: Water Cooled Electromagnetic Separator 750 Model. Production capacity 10–15 tons per hour. Final product whiteness 75–85 (China standard).
- Malaysia sodium-potassium feldspar water-mill line: 800 tons per day, 200 mesh sodium-potassium feldspar wet-milling production line.
- Feldspar dry powder production line: 200 tons per day dry powder production line.
More project photos on our projects page.
Feldspar: buyer questions
Can one separator handle both potassium and sodium feldspar?
Yes. Our feldspar magnetic separators are used for potassium and sodium (albite) feldspar. The field strength and matrix are matched to your ore after a sample test.
What whiteness can feldspar reach after magnetic separation?
It depends on the ore. As a published reference, the Indian wet feldspar line in Morbi (200 mesh) reaches a final whiteness of 75–85 (China standard) with a 750 model water-cooled electromagnetic separator. Send a sample for a result on your feldspar.
Which model suits a 10–15 t/h feldspar line?
The Morbi reference line uses the Water Cooled Electromagnetic Separator 750 Model for 10–15 t/h of 200-mesh feldspar. Your model depends on particle size, slurry density and target iron level.
Wet or dry processing for feldspar?
Wet processing suits feldspar that is milled in water or already a slurry; dry processing suits feldspar powder and granules. Dry processing avoids a drying step. We advise based on your plant.
Can the separator be added to my existing feldspar line?
Yes. In-line pipe, drawer, rotary and U-type units drop into existing pipelines with no extra floor space.
Send us your material. We test it free.
Tell us your material, particle size, capacity and target iron level. We usually reply with a matched model and price within 24 hours.