Pyrite desulfurization by wet oxidation in alkaline solutions

Conference · Mon Jan 01 04:00:00 EST 1979

OSTI ID:5669958

Chuang, K C; Chen, M C; Greer, R T; Markuszewski, R; Sun, Y; Wheelock, T D

Particles of iron pyrites can be desulfurized by leaching them with a hot alkaline solution containing dissolved oxygen under pressure. As the reaction proceeds, sulfur is extracted largely as soluble sulfates and a shell of iron oxide is formed around a shrinking core of pyrite. The overall rate of the reaction seems to be controlled by diffusion of dissolved oxygen through the shell of iron oxide.

• Research Organization: Ames Lab., IA (USA)
• DOE Contract Number: W-7405-ENG-82
• OSTI ID: 5669958
• Report Number(s): ISM-247; CONF-791108-14
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010402* -- Coal
Lignite
& Peat-- Purification & Upgrading
ALKALI METAL COMPOUNDS
CARBON COMPOUNDS
CARBONACEOUS MATERIALS
CARBONATES
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COAL
DESULFURIZATION
DISSOLUTION
ENERGY SOURCES
FOSSIL FUELS
FUELS
IRON COMPOUNDS
IRON SULFIDES
KINETICS
LEACHING
MATHEMATICAL MODELS
MINERALS
ORES
OXIDATION
OXYGEN COMPOUNDS
PYRITE
PYRITES
REACTION KINETICS
REMOVAL
SEPARATION PROCESSES
SODIUM CARBONATES
SODIUM COMPOUNDS
SULFIDES
SULFUR COMPOUNDS
SULFUR ORES
TRANSITION ELEMENT COMPOUNDS