FIELD: chemistry.
SUBSTANCE: method involves reacting dispersed particles of silicic acid and magnesium silicate with lumps of magnesium in an inert medium while stirring continuously and at temperature ranging from 650 to 800°C. Components of the mixture are in the following mass ratio: M(H2SiO3):M(MgSiO3):M(Mg)=1.0:(0÷1.0):(1÷1-5). Maximum particle size of silicon-containing components does not exceed 2 mm, and the ratio of sizes of the latter to sizes of lumps of magnesium: D(MgSiO3) (H2SiO3):D(Mg)=1:(10÷20).
EFFECT: obtaining highly pure magnesium silicide.
2 cl, 3 ex
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