Client: Heavy Mineral Sands Producer
Feedstock: Ilmenite Concentrate (TiO₂ 52-55%)
Final Product: Rutile-Grade TiO₂ (≥94% purity)
Capacity: 800 TPD (Single Line Retrofit)
Work Scope: EPC Modernization
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Pre-Leach Treatment：Dry grinding to 45μm & magnetic separation for Fe reduction.
Hydrolisis Control：Seed crystal optimization for uniform rutile crystal growth.
Post-Processing：Surface modification with Al₂O₃/SiO₂ coating for pigment quality.
Enhanced Acid Digestion：H₂SO₄ pressure leaching (230°C/24 bar) with TiO₂ recovery >97%.
Calcination Upgrade：Rotary kilns retrofitted with staged temperature zones (850°C → 1,050°C).
Effluent Recycling：Acid regeneration (≥80% H₂SO₄ recovery) & iron byproduct conversion.
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