The application segmentation of the Refinery Sulphur market delineates four principal end‑use categories: fertilizer production, chemical manufacturing, petroleum refining, and other industrial uses. Fertilizer production dominates, consuming roughly 45% of total sulfur output as sulfuric acid for phosphate and ammonium sulfate fertilizers, thereby anchoring the market’s volume base. Chemical manufacturing, representing about 30%, leverages sulfur for producing solvents, polymers, and specialty chemicals, contributing higher average prices per tonne. Petroleum refining, at an estimated 15%, utilizes sulfur in hydrodesulfurization catalysts and sulfur recovery units, linking market performance to global crude processing volumes. The remaining 10% encompasses miscellaneous applications such as pharmaceuticals, batteries, and rubber vulcanization. This Refinery Sulphur segmentation framework clarifies how each application drives demand, pricing, and ultimately the overall market size.