Types Of Iron Sulfide And Application Range

　Iron sulfide is a brown-black colored lump, melting point 1193-1199℃, density 4.74g/cm3; insoluble in water, soluble in an aqueous solution of acid, while producing hydrogen sulfide; easily oxidized by heating in air, heated to 1100℃ or more in vacuum to obtain sulfur. Ferrous sulfide can be made by the direct reaction of two elements or by the action of an aqueous solution of ferrous salts with alkali metal sulfides. In the laboratory it can be used to generate hydrogen sulfide gas; it can also be used in the ceramics and paint and pigment industry.

    Iron sulfide in steel making and casting is used, is a good sulfur agent, different iron sulfide use areas and play a different role, so in the actual use of iron sulfide win divided into what are the main iron sulfide, don't get it wrong or may affect the quality of the process. Iron sulfide is the common name of iron and sulfur compounds, mainly ferrous disulfide, ferrous sulfide, and iron trisulfide. Sulfur iron ore in the underground mining process must strengthen the ventilation and dust management, keep track of the concentration of SO2, CO, H2S, and other harmful ferroalloy gases in the mining site, and pay attention to the discovery of spontaneous combustion of ore fires sulfur iron ore lump ore.

    Ferrous disulfide (FeS2) is a yellow crystal, is the main component of pyrite, with anti-magnetic. Pyrite melting point is 1171 ℃, density 5.0 g / cm3, with cubic lattice; room temperature for inactive substances, temperature increases become active, heated in the air, oxidation into ferric oxide and sulfur dioxide; in a vacuum heated to 600 ℃ or more to get sulfur. Iron disulfide can be used in the sulfuric acid industry.