Reagent for froth flotation of bituminous coal

Patent · Tue Feb 08 04:00:00 EST 1983

OSTI ID:6292180

Mccarthy, J R

A reagent and a method for using the reagent for treating a solid material disposed in a liquid medium and having an oxygencontrolled surface condition. The reagent includes a liquid hydrocarbon, a reducing material and an activator material. The liquid hydrocarbon such as mineral oil has a specific gravity different from the specific gravity of the liquid medium. The reducing material such as phosphorous pentasulfide is present in an amount sufficient to establish a reducing environment around the solid material for breaking the oxygen control on the surface of the solid material. The activator material such as zinc thiophosphate is present in an amount sufficient to establish an electrostatic charge on the solid material after the oxygencontrolled surface condition has been broken. A more specific feature of the invention is directed to the method of flotation of extremely fine bituminous coal having an oxygen-controlled surface condition. The reagent is used in the conventional froth flotation equipment of the prior art.

• Assignee: EDB-83-090244
• Patent Number(s): US 4372864
• OSTI ID: 6292180
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010400* -- Coal
Lignite
& Peat-- Processing
BITUMINOUS COAL
BLACK COAL
CARBONACEOUS MATERIALS
CHALCOGENIDES
COAL
ELEMENTS
ENERGY SOURCES
FLOTATION
FOAM SEPARATION
FOSSIL FUELS
FUELS
MATERIALS
MINERAL OILS
NONMETALS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXYGEN
PHOSPHORUS COMPOUNDS
PHOSPHORUS SULFIDES
REAGENTS
SEPARATION PROCESSES
SULFIDES
SULFUR COMPOUNDS
SURFACE PROPERTIES
ZINC COMPOUNDS