Removal of mineral matter including pyrite from coal
Mineral matter, including pyrite, is removed from coal by treatment of the coal with aqueous alkali at a temperature of about 175.degree. to 350.degree. C, followed by acidification with strong acid.
- Publication Date:
- OSTI Identifier:
- Report Number(s):
- US 3993455
US patent application 05/354,023
- Resource Type:
- Research Org:
- BUREAU OF MINES
- Country of Publication:
- United States
- removal; mineral; matter; including; pyrite; coal; mineral; matter; including; pyrite; removed; coal; treatment; coal; aqueous; alkali; temperature; 175; degree; 350; degree; followed; acidification; strong; acid; strong acid; aqueous alkali; mineral matter; mineral matter; coal mineral; matter including; coal mine; including pyrite; including pyrite /44/201/423/
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