Multistream, multiproduct, pressure manipulation beneficiation arrangement

Patent · Tue Aug 12 00:00:00 EDT 1986

OSTI ID:5312980

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

A multiple stream, multiple product method for froth flotation separation of the components of an input slurry having particulate coal therein is described which consists of (a) mixing chemical reagents with the input slurry to condition the surfaces of the particulate coal in the slurry, the chemical reagents comprising a monomer, a catalyst and a fluid hydrocarbon; (b) in a forward product stream, applying a first pressure to the particulate coal slurry mixture to force it through and cause it to spray from at least one nozzle 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 mixture to separate from the froth phase by sinking in the liquid, and separating the froth phase as a first product; and (c) in a second scavenger product stream, applying a second pressure, greater than the first pressure, to the remainder of the separated particulate coal slurry mixture to force it through and cause it to spray from at least one nozzle onto the surface of a liquid to create a second 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 4605494
• OSTI ID: 5312980
• Country of Publication: United States
• Language: English

Related Subjects

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