Attempts to combat problems of cleaning fines

Conference · Wed Jan 01 00:00:00 EST 1986

OSTI ID:5866531

Khan, L A; Baxter, J W

This paper first discusses the physicochemical cleaning methods used to process fines followed by an analysis of the subprocesses of froth flotation and the adverse effects of slimes and particle oxidation. These subprocesses include the phenomena of interception, contact, adhesion and levitation. Preventive and corrective measures to combat the generation of fines and their effects are suggested. Preventive measures include controlled grinding, limited liberation, flotation at coarser sizes. Means of preventing oxidation and/or removing oxidation products are also discussed. Corrective measure to increase recovery include intensive aeration, aggregation of particles, intensive mixing, increased retention time, and reduction of detachment. Measures leading to improves selectivity involve means to reduce slime coating, achieve selective mineralization of bubbles and minimize entrapment.

• OSTI ID: 5866531
• Report Number(s): CONF-8609178-
• Resource Relation: Conference: Society of Mining Engineering of AIME fall meeting, St. Louis, MO, USA, 7 Sep 1986; Other Information: Technical Paper 86-373
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
COAL FINES
SURFACE CLEANING
WASHING
AERATION
BUBBLES
COAL PREPARATION
COATINGS
CONTROL
DEPOSITS
FLOTATION
MINERALIZATION
MIXING
OXIDATION
PARTICLE SIZE
PARTICULATES
CHEMICAL REACTIONS
CLEANING
PARTICLES
SEPARATION PROCESSES
SIZE
SURFACE FINISHING
010300* - Coal
Lignite
& Peat- Preparation- (1987-)