Ferrophosphorus  it is an alloy containing 14-18% phosphorus and is an alloying of cast iron, increased processing of steel, for automatic transfer lines, and others.  Ferrophosphorus  is received in blast furnaces recovering phosphorites with carbon by the reaction: Ca (RO4) 2 + 5C + 3 (SiO2) = 2 [P] Fe + + 5) + (CO 3 (CaSiO3). As well as successfully applying ferroalloy ferroalloy phosphorus containing (15-30% P, 8-12% Si, 2-4% MP, 55-70% Fe), produced as a byproduct in the production of pure phosphorus in the powerful electric arc method of sublimation recovery of phosphorus of the phosphorites.

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