Patent classifications
C
CHEMISTRY; METALLURGY
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C01
INORGANIC CHEMISTRY
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C01B
NON-METALLIC ELEMENTS; COMPOUNDS THEREOF;; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
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C01B17/02
Preparation of sulfur; Purification
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C01B17/027
Recovery of sulfur from material containing elemental sulfur, e.g. luxmasses; or sulfur containing ores; Purification; of the recovered sulfur
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C01B17/033
using a liquid extractant
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