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A method for simultaneous determination of micro amounts of silicon ,copper ,antimony ,tin and matrix molybdenum in the molybdenum iron alloy was proposed. The operating condition of the instrument was optimized. Yttrium as the element of internal standard was used to correct physical and chemical interferences caused by sampling. The interferences of coexisting elements and matrix effects were eliminated by the background correction and coefficent correction RSD ,detection limits for trace elements and contrast of analytical results were discussed.The results were satisfactory.

 

Ferro molybdenum is an important iron-molybdenum alloy, with a molybdenum content of 60-75%. It is the main source for molybdenum alloying of HSLA steel.

The alloy is produced by heating a mixture of molybdenum(VI) oxide MoO3, aluminium, and iron. The oxide and the aluminium combine via an aluminothermic reaction to give molybdenum in situ. The ferromolybdenum can be purified by electron beam melting or used as it is. For alloying with steel the ferromolybdenum is added to molten steel before casting. Among the biggest suppliers of ferromolybdenum in Europe are the English trading house Derek Raphael and Co Ltd and the German trading house Grondmet in Düsseldorf, Germany. A large ferromolybdenum producer in the US is Langeloth Metallurgical Company in Langeloth, Pennsylvania.

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