Is iron sulfide magnetic?

Chinese nickname for iron sulfide: pyrite;  Pyrite;  Pyrite concentrate;  Iron sulfide.  Ore iron ore;  Sulfur concentrate powder;  White iron mine;  Sulfur concentrate, English name Pyrite, molecular weight 119.967, formula: FeS2, iron sulfide Properties: yellow cubic crystal, melting point: 1171℃ Density: 5.0g/cm3  

The main component of iron sulfide, diamagnetic.  Room temperature is an inactive substance.  It becomes lively when the temperature rises.  Oxidation in the air into iron oxide and sulfur dioxide: 4FeS2+1102 = = = high temperature = = = 2Fe2O3+8SO2, 2SO2+O2 = = VANadium pentoxide V2O5(catalyst) or 400℃ ~ 500℃ = = 2SO3, SO3+H2O = = H2SO4, iron sulfide is mainly used for contact method to manufacture sulfur.  

What's the composition of iron sulfide?

The chemical composition of iron sulfide is FeS2 and its crystal belongs to isaaxial sulfide mineral.  Iron sulfide usually contains cobalt, nickel and selenium in its composition and has a nacL-type crystal structure.  Often complete crystal shape, a cube, octahedron, pentagonal dodecahedron and poly.  There are stripes parallel to the crystal edge on the cubic crystal plane, and the stripes on each crystal plane are perpendicular to each other.  The aggregate is dense massive, granular or tuberculous.  Light yellow (copper-yellow) color, streaks green-black, strong metallic luster, opaque, no cleavage, jagged fracture.  Mohs hardness is large, up to 6-6.5, knife can not be carved, specific gravity 4.9-5.2, in surface conditions easy to weathering into limonite.  

In agriculture, partially purified natural iron sulfide can be used to provide iron (Fe) and sulfur (S) fertilizer to crops, and as an improver to condition alkaline soils.  

Iron sulfide exists widely in all kinds of rocks on the earth's surface and is the most widely distributed sulfide mineral, which is easy to obtain.  However, the nature of iron sulfide does not adapt to the application of products in some fields, the need for artificial synthesis.  Because iron sulfide is so widely available and easy to extract, it is rarely produced artificially, except for lithium-ion batteries.  However, iron sulfide produced by mechanical grinding of pyrite is used to provide iron (Fe) and sulfur (S) fertilizer for crops, and as an improver to regulate alkaline soil, which has a certain effect, but far from reaching the ideal value.  Therefore, the production field of agricultural fertilizer is in great need of a synthetic ferrous disulfide, which can improve the quality of crops and has a good effect on crop yield. Moreover, the process is simple, the synthesis is safe, the use is safe, the cost is low and the efficiency is high.