Calcium Carbide Slag Sorting Processing and Resource Utilization Solution

Calcium Carbide Slag Sorting & Resource Utilization Solution turns industrial waste into valuable alloy and cement raw materials.

This solution targets the recovery of Ferrosilicon (FeSi) particles from calcium carbide slag using a purely physical "Screening - Jigging" process. It achieves immediate economic benefits by recovering alloy and prepares the purified slag for 100% high-value utilization in building materials.

Step 1: Screening & Classification

Goal: Separate material into size fractions for efficient sorting.

• Feeding: Uniform feeding via silo.
• Screening: Trommel Screen divides material into 3 grades:
  • >30mm: Large lumps (Ferrosilicon/Carbide) are recovered by manual picking.
  • 8-30mm: Sent to Large Particle Jig.
  • 0-8mm: Sent to Fine Particle Jig.

Step 2: Gravity Separation (Jigging)

Goal: Recover heavy Ferrosilicon alloy.

• Principle: Based on the huge density difference (FeSi 6.3 vs Slag 2.2).
• Equipment: Jig Machine uses pulsating water to stratify the material. Heavy alloy sinks to the bottom as concentrate, while light slag floats as tailings.
• Result: High-purity Ferrosilicon recovery without chemicals.

Step 3: Dewatering

• Product Handling: Both the Ferrosilicon concentrate and the purified slag tailings are dewatered by Dewatering Screens. The alloy is sold, and the slag is sent for further processing.

After removing Ferrosilicon, the purified calcium carbide slag is a premium raw material:

• Cement Production: Replaces limestone as a calcium source.
• Building Materials: Used for calcium silicate boards, bricks, and blocks.
• Environmental: Used as a desulfurization agent for flue gas or acid wastewater neutralizer.
• Advantage: The removal of hard alloy particles improves grindability and product quality.

Q1: Why recover Ferrosilicon?

A: Ferrosilicon is a valuable alloy. Recovering it provides immediate revenue. Also, hard alloy particles can damage downstream equipment (like mills) if the slag is used for cement, so removing them improves the slag's quality.

Q2: Do I need chemicals?

A: No. The process is entirely physical (Gravity Separation) using recycled water. There is no chemical pollution.

Q3: Can this process handle wet slag?

A: Yes. Since jigging is a wet process, it is perfect for handling wet calcium carbide slag directly without drying.

Turn Slag into Resources

We provide a complete "Treasure Taking + Slag Utilization" solution.
Contact us for a feasibility analysis and quotation.

👇 Fill out the inquiry form below!