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jtq metal detector for wolframite in sudan

history of tungsten international tungsten industry association itia

vetenskaps- academiens nya handlingar with the title the constituents of tungsten in this work he demonstrated that the mineral contains lime and a still unknown acid which he called tungstic acid torbern bergman professor in uppsala suggested preparing the corresponding metal by charcoal reduction of the

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conflict minerals frequently asked questions

what are conflict minerals? conflict minerals is the term used to describe the following minerals gold wolframite casserite columbite-tantalite and their derivative metals which include tin tungsten and burundi central african republic the republic of the congo rwanda south sudan tanzania uganda and zamia

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electromagnetic iron remover principle of electromagnetic iron

iron mover is suitable for thick materials because of the reasonable magnetic circuit design magnetic field intensity and large magnetic penetration depth

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tungsten metallurgy

mar 19 tungsten alloy steel was later discovered to be vastly superior for cutting metal at high speed and created a sensation at the paris exposition in cutting tools made of it could panning is a good method of detecting both scheelite and wolframite as they both appear at the tail of the pan a fairly simple

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