Chromite Concentrate

Chromite Concentrate from Pakistan

Chromite concentrate is produced by beneficiating lower-grade chromite ore through gravity-based mineral processing. Raw ore with 20–36% Cr₂O₃ is crushed, screened, and passed through spirals, shaking tables, or jig separators to remove lighter gangue minerals and upgrade the chromite content to 40–46% Cr₂O₃. The resulting concentrate is a fine-grained, dense product with tightly controlled chemistry and particle size. Pakistan’s Balochistan province has multiple chromite beneficiation plants processing ore from surrounding mines.

Particle Size

• Standard: 0–3 mm (80% passing 1 mm)

• Fine: 0–1 mm (80% passing 0.5 mm)

• Custom sizing available based on end-use requirements

Key Properties

• Bulk Density: 2.4–2.8 g/cm³

• Specific Gravity: 4.2–4.6

• Moisture: < 8% (as shipped), < 3% (dried)

• Color: Dark grey to black

• Magnetic Susceptibility: Low

Industrial Uses

• Ferrochrome smelting: Concentrate is pelletized or briquetted and charged into submerged arc furnaces to produce charge chrome and high-carbon ferrochrome

• Foundry chromite sand: Fine chromite concentrate used as specialty molding and core sand in steel and iron foundries for its high refractoriness and thermal conductivity

• Refractory manufacturing: Raw material for chrome-mag refractory bricks, gunning mixes, and ramming masses for steel ladles, EAF furnaces, and cement kilns

• Chemical manufacturing: Feedstock for sodium dichromate, chromic acid, chromium oxide green, and other chromium chemicals

• Welding consumables: Chromite fines used in welding electrode coatings and flux-cored wire formulations

• Pigments: Base material for chrome oxide green pigment used in paints, ceramics, and construction materials

• Pelletizing and briquetting: Concentrate is agglomerated into pellets or briquettes for improved furnace feed and handling

Quality Assurance

Each lot includes a Certificate of Analysis reporting Cr₂O₃, FeO, SiO₂, Al₂O₃, MgO, CaO, P, S, moisture, and particle size distribution. Concentrate is sampled at the beneficiation plant and again at the port before loading. Pre-shipment samples are provided for buyer approval. Third-party inspection (SGS, Intertek, Alfred H. Knight, or equivalent) can be arranged on request.