Electrochemical interactions between mineral and grinding media and their effects on flotation and media wear
Book
·
OSTI ID:5129016
This report describes the electrochemical nature of mineral grinding media interactions in the wet grinding of one-and two-sulfide mineral ores with regard to the corrosive wear of the media and the flotation behavior of the minerals. Two iron sulfides (pyrite and pyrrhotite) and three types of steels (mild steel, high carbon forged steel, and austenitic stainless steel) were used to represent the sulfide minerals and the grinding media, respectively. Electrochemical measurements (rest and combination potentials, galvanic currents, and polarization behaviors) under abrasive and nonabrasive conditions were correlated with data from marked ball wear tests, Hallimond tube flotation tests, and with scanning electron photomicrographs and energy dispersive X-ray spectra. Corrosion currents obtained by superposition of polarization curves of sulfide mineral grinding media systems were in good agreement with corrosion currents estimated from ball wear data.
- OSTI ID:
- 5129016
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360105 -- Metals & Alloys-- Corrosion & Erosion
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400400* -- Electrochemistry
ALLOYS
BALL BEARINGS
BEARINGS
CARBON STEELS
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISTRY
CHROMIUM ALLOYS
COMMINUTION
CORROSION
CORROSION RESISTANT ALLOYS
ELECTROCHEMISTRY
ELECTRON MICROSCOPY
FLOTATION
GRINDING
INTERACTIONS
IRON ALLOYS
IRON BASE ALLOYS
IRON COMPOUNDS
IRON SULFIDES
MACHINING
MICROSCOPY
MINERALS
ORES
PYRITE
PYRRHOTITE
SCANNING ELECTRON MICROSCOPY
SEPARATION PROCESSES
SPECTRA
STAINLESS STEELS
STEELS
SULFIDE MINERALS
SULFIDES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
X-RAY SPECTRA
360105 -- Metals & Alloys-- Corrosion & Erosion
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400400* -- Electrochemistry
ALLOYS
BALL BEARINGS
BEARINGS
CARBON STEELS
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISTRY
CHROMIUM ALLOYS
COMMINUTION
CORROSION
CORROSION RESISTANT ALLOYS
ELECTROCHEMISTRY
ELECTRON MICROSCOPY
FLOTATION
GRINDING
INTERACTIONS
IRON ALLOYS
IRON BASE ALLOYS
IRON COMPOUNDS
IRON SULFIDES
MACHINING
MICROSCOPY
MINERALS
ORES
PYRITE
PYRRHOTITE
SCANNING ELECTRON MICROSCOPY
SEPARATION PROCESSES
SPECTRA
STAINLESS STEELS
STEELS
SULFIDE MINERALS
SULFIDES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
X-RAY SPECTRA