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Subject: battery grade ore mining. Most of the oxide ore is of metallurgical grade (45-48 percent manganese), and a small fraction is battery grade ore (52 percent manganese)? |
| хм, а как тогда переводится metallurgical grade [ore] и дальше по тексту есть еще chemical grade ore? |
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Есть еще такое: battery ore руда для химической промышленности |
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Manganese ore is an indispensable raw material in the manufacture of steel, where it is used in the form of ferromanganese and also as a direct feed to the blast furnace. The important non-metallurgical uses of manganese ore are in the manufacture of dry batteries, chemical and glass. battery-grade ore - руда для использования в изготовлении сухих аккумуляторов |
| спасибо |
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