Process for flocculating oil and clay-containing slimes
Finely divided clay having hydrocarbons in intimate association therewith which is suspended in an aqueous medium having a pH of at least 6.0, preferably from 6.0 to 10.0, can be flocculated and settled by the addition of acrylic acid or a water-soluble acrylic acid-derived polymer in an amount sufficient to form a floc of the clay. In accordance with this procedure, a water-soluble primary flocculant of the group consisting of acrylic acid and an anionic acrylic acid-derived polymer is added to the suspension in an amount sufficient to form a floc of the clay and associated hydrocarbons. A water-soluble secondary flocculant of the group consisting of a nonionic polymer, a cationic polymer, and an inorganic salt also is added to the suspension in an amount sufficient to form a floc of the silica content of the suspension. (2 claims)
- Assignee:
- Internat Min and Chem Corp
- Patent Number(s):
- US 3723310
- OSTI ID:
- 6815612
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
040402* -- Oil Shales & Tar Sands-- Surface Methods
ACIDIZATION
ACRYLIC ACID
ADDITIVES
BITUMENS
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
CARBOXYLIC ACIDS
CLAYS
DISPERSIONS
ENERGY SOURCES
FLOCCULATION
FOSSIL FUELS
FUELS
HYDROCARBONS
MATERIALS
MONOCARBOXYLIC ACIDS
OIL SANDS
ORGANIC ACIDS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
POLYMERS
PRECIPITATION
RECOVERY
SEPARATION PROCESSES
SUSPENSIONS
TAR