The cutting performance and toughness of steel can be effectively improved by adding appropriate proportion of iron sulfide in the process of steelmaking, which plays a good role of inoculant in the casting process. It can also improve the distribution of graphite, improve the quality of graphite cast iron products, and improve the mechanical properties of gray cast iron, which shows that iron sulfide plays an important role in the metallurgical process.
Iron sulfide is an important inoculant (helpful for graphite precipitation) and nodularizing agent for producing nodular cast iron in cast iron industry. Cast iron is cheaper than steel, but its properties are better than steel. Iron sulfide can also be used to smelt metal magnesium. The elements in metal magnesium are extracted in the process of high temperature, so it also plays an important role in smelting metal magnesium. Pyrite can also be used as suspended phase in mineral processing industry, as coating of electrode in the process of manufacturing electrode, and as organic silicon in chemical industry.
In addition, more than 85% of pyrite is used to produce sulfuric acid, followed by sulfur extraction. Pyrite can be comprehensively recycled when the associated copper and other elements reach a certain content. If used and stored according to specifications, it will not decompose, has no known dangerous reaction, and will not produce acid. It has weak conductivity, insoluble in water and dilute hydrochloric acid, soluble in nitric acid, sulfur precipitation.
When burned on a fire, it produces a blue flame and releases irritating sulfur dioxide. Pyrite is a kind of sulfide widely distributed in the crust, which can be formed in various geological processes. Sediments can be formed independently in limestone, volcanic rocks and coal seams, and often coexist with copper, lead, zinc and other non-ferrous metals to form POLYMETALLIC PYRITE DEPOSITS. In the process of underground mining of pyrite, it is necessary to strengthen the management of ventilation and dust prevention and control the concentration of harmful gases at any time.
