Mineral developed UMG technology based on high purity (99.99%) lump quartz and high purity (99.95%) thermal black as raw materials. Mineral technology permit in one furnace toВ obtain UMG carbothermic chunk. UMG chunk of MINERAL has purity over 99.95% with B<1 ppmw and P<10 ppmw what permit to purify it to over 5N multicrystal by one time directional solidification using standard vertical DS furnaces. Resistivity of final product exceed 0.5 Ohm x cm.
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