iron ore drying filter press pq iron ore processing

Iron ore processing involves several stages to extract and purify iron from its ores. One critical step is dewatering, where a filter press is often used to remove moisture from the iron ore concentrate after beneficiation. Below is an overview of the PQ Iron Ore Drying Filter Press and its role in iron ore processing:

1. Purpose of a Filter Press in Iron Ore Processing
– Dewatering: Removes water from iron ore slurry (concentrate) to reduce moisture content for transport or further processing (e.g., pelletizing).
– Cost Efficiency: Reduces shipping weight and energy consumption in downstream drying.
– Environmental Compliance: Minimizes water waste and tailings management issues.

2. How a Filter Press Works in Iron Ore Processing
– Filtration Mechanism: Slurry is pumped into chambers with filter cloths; water passes through, leaving a solid “filter cake.”
– Types of Filter Presses:
– Recessed Chamber Press: Common for iron ore due to high solids capture.
– Membrane Press: Uses compressed air/water to squeeze additional moisture out.
– Plate & Frame Press: Older design, still used in some applications.
– Cycle Time: Typically 2–4 hours (filling, pressing, drying, cake discharge).

iron ore drying filter press pq iron ore processing 3. PQ Iron Ore Filter Press (Possible Interpretation)
– If “PQ” refers to a specific brand or model (e.g., Outotec, FLSmidth, Metso), it likely denotes:
– High-pressure capability (~15–20 bar) for maximum dewatering.
– Automated operation for efficiency.
– Corrosion-resistant materials (stainless steel/polypropylene) for harsh iron ore slurry conditions.

5. Alternatives & Complementary Technologies
– Vacuum Filters (Disc/Drum): Lower pressure but continuous operation.
– Centrifuges: For finer particles but higher energy use.
– Thermal Dryers (Rotary/Fluidized Bed): Further reduce moisture if needed.