Lump Sulphur (Crushed)

Crushed block sulphur, 99.8% min, bulk & jumbo bags

Lump sulphur is remelted block sulphur that has been broken and screened rather than formed into a bead, and the whole commercial case for it is that you skip the forming step. The chemistry is identical to granular — purity 99.8% minimum and often 99.9%, moisture ≤ 0.5%, ash ≤ 0.05%, acidity as H₂SO₄ ≤ 0.01%, organic carbon ≤ 0.05%, and arsenic, selenium and tellurium at 1 ppm or below — so an acid-plant burner cannot tell the difference once the material is molten. What differs is the physical form: irregular crushed pieces normally screened to 0–50 mm or 0–100 mm, carrying a fines fraction that formed product does not have, with bulk density around 1.2–1.3 t/m³ and an angle of repose that makes it sit and flow differently in a hold. Colour runs the same bright yellow, darkening toward honey if organic carbon creeps up, which is the one visual cue worth trusting on a hatch inspection.

Buy lump over granular when the sulphur goes straight into a melter and the discount justifies the handling. Sulphuric acid plants, phosphate fertilizer producers running DAP and MAP, mining and hydrometallurgical leach circuits and carbon-disulphide plants all melt the feed anyway, so the bead's one real advantage — clean free-flowing handling with low dust — is worth nothing to them past the port gate. Where lump costs you is exactly there: it dusts, the fines are a flammability and housekeeping problem, it does not discharge from a grab or hopper as cleanly, and a long voyage with transhipment degrades it further. That is why granular dominates the deep-sea trade while lump trades at a discount into buyers with short lanes, forgiving handling and a melter at the end. CBIL brokers crushed lump from Gulf and CIS remelt operations against SGS certification of purity, moisture, ash, acidity, carbon and screen size at load port. Supply is arranged in bulk Handysize and Supramax parcels and 1 MT jumbo bags on FOB, CFR and CIF terms — send your size cut, your melter's tolerance for fines and your discharge port and we will price against current allocation.