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Information × Registration Number 0207U000788, 0103U004928 , R & D reports Title Development of fundamentals of chemico-metallurgical production of concentrated niobium-tantalum products from domestic raw materials popup.stage_title Head S.Sidorenko, Registration Date 05-02-2007 Organization State saintific research and progect institute of titanium popup.description2 Laboratory researches justify a development of two-step process of rare-earth materials reducing electric smelting to produce ferrosilicon alloy and slag, its further chlorination to extract niobium, tantalum and silicon. Tests included process operations that proved niobium and silicon satisfactory extraction by the pattern "smelting-chlorination", i.e. 75% and 68% respectively. Process regulations were worked out for commercial Nb(Ta)2O3 and purified SiCl4 pilot production from pyrochlore semi-product and Mazurovsky deposit. Product Description popup.authors popup.nrat_date 2020-04-02 Close