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ES120025A1
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Improvements in the procedure to treat iron ores.
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GB362343A
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Improvements in or relating to the treatment of materials containing iron and other values
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AU2697230B
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Process of treating sulphide ores
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GB361903A
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Process of treating materials containing iron in combination with sulphur
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US1904583A
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Process of treating iron ores
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US1994367A
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Treatment of oxide iron ores and other materials containing iron in oxide form
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US1957006A
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Method of and apparatus for condensing sulphur
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US1916853A
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Process of treating ores
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US1946349A
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Process of treating sulphide ores
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US2023942A
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Process of and apparatus for effecting reactions between solids and gases
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US1891717A
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Treatment of iron pyrites
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US1946325A
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Treatment of iron pyrites
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US1898702A
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Process of treating iron ores
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US1898701A
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Treating sulphide ores
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CA313826A
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Process of treating sulphide ores
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CA314884A
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Process of treating ores
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CA318896A
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Process of separating metals by selective oxidation of the chlorides
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CA317896A
|
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Process of treating iron ores
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CA301945A
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Process and apparatus for condensing sulphur
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