Bituminous coal reagent and flotation process

Patent · Tue Dec 29 04:00:00 EST 1981

OSTI ID:5827415

Mccarthy, J R

A reagent and a method for using the reagent are described for treating a solid material disposed in a liquid medium and having an oxygen-controlled surface condition. The reagent includes a liquid hydrocarbon, a reducing material and an activator material. The liquid hydrocarbon has a specific gravity different from the specific gravity of the liquid medium. The reducing material 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 is present in an amount sufficient to establish an electrostatic charge on the solid material after the oxygen-controlled 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 useful in froth flotation processes and in bath flotation and separation processes.

• Assignee: IFI; EDB-82-053924
• Patent Number(s): US 4308132
• OSTI ID: 5827415
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
013000* -- Coal
Lignite
& Peat-- Transport
Handling
& Storage
ALKANES
BITUMINOUS COAL
BLACK COAL
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL ACTIVATION
COAL
COAL FINES
DENSITY
ELECTROSTATICS
ELEMENTS
ENERGY SOURCES
FLOTATION
FLUIDS
FOSSIL FUELS
FUELS
HYDROCARBONS
LIQUIDS
MATERIALS
MINERAL OILS
NONMETALS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXYGEN
PHOSPHORUS COMPOUNDS
PHOSPHORUS SULFIDES
PHYSICAL PROPERTIES
REDUCING AGENTS
SEPARATION PROCESSES
SULFIDES
SULFUR COMPOUNDS
SURFACES