Multistream, multiproduct beneficiation arrangement

Patent · Tue Jul 01 00:00:00 EDT 1986

OSTI ID:5561462

Burgess, L E; McGarry, P E; Herman, D E

A multiple stream, multiple product method is described for froth flotation separation of the components of an input slurry having particulate coal therein. The method consists of: (a) in a first forward product stream, mixing a first quantity of chemical reagents with the particulate coal slurry, the chemical reagents comprising a monomer, a catalyst and a fluid hydrocarbon, spraying the particulate coal slurry with the chemical reagents mixed therein onto the surface of a liquid to create a floating froth phase on the liquid surface having a first quantity of the particulate coal therein, and allowing the remainder of the particulate coal slurry to separate from the froth phase by sinking in the liquid, and separating the froth phase as a first product; and (b) in a second scavenger product stream, mixing an additional quantity of the chemical reagents with the remainder of the separated particulate coal slurry, spraying the remainder particulate coal slurry with the additional chemical reagents onto the surface of a liquid to create a floating froth phase on the liquid surface having a second quantity of the particulate coal therein, and allowing the remainder of the particulate coal slurry to separate from the froth phase by sinking in the liquid, and separating the second froth phase as a second product, whereby first and second separate product streams are separated from the input slurry.

• Assignee: Sohio Alternate Energy Development Co., Cleveland, OH
• Patent Number(s): US 4597858
• OSTI ID: 5561462
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
013000* -- Coal
Lignite
& Peat-- Transport
Handling
& Storage
CATALYSTS
CHEMICAL REACTION YIELD
COAL FINES
COAL PREPARATION
DISPERSIONS
FLOTATION
FUEL SLURRIES
FUELS
HYDROCARBONS
MIXING
MIXTURES
MONOMERS
ORGANIC COMPOUNDS
PARTICLES
PARTICULATES
QUANTITY RATIO
REAGENTS
SEPARATION PROCESSES
SLURRIES
SPRAYS
SUSPENSIONS
YIELDS