GB760279A - Improvements relating to the treatment of acidic ore pulps and acidic suspensions ofminerals - Google Patents
Improvements relating to the treatment of acidic ore pulps and acidic suspensions ofmineralsInfo
- Publication number
- GB760279A GB760279A GB21547/54A GB2154754A GB760279A GB 760279 A GB760279 A GB 760279A GB 21547/54 A GB21547/54 A GB 21547/54A GB 2154754 A GB2154754 A GB 2154754A GB 760279 A GB760279 A GB 760279A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ton
- acrylamide
- polymer
- addition
- lbs
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/004—Organic compounds
- B03D1/016—Macromolecular compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/004—Organic compounds
- B03D1/008—Organic compounds containing oxygen
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/004—Organic compounds
- B03D1/01—Organic compounds containing nitrogen
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2203/00—Specified materials treated by the flotation agents; specified applications
- B03D2203/02—Ores
- B03D2203/025—Precious metal ores
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
A process of facilitating the dewatering of acidic aqueous suspensions of finely divided minerals having a pH not greater than 4 comprises subjecting them to the action of from 0.001 lb./ton to 10 lbs./ton of suspended solids of an acrylic polymer having at least 50 per cent of the monomer units attached to amide groups, the polymer having an average molecular weight of at least 10,000. Preferred polymers are: polyacrylamides of low, medium and high viscosities or molecular weight ranges, copolymers of acrylamide and acrylic acid, acid - hydrolysed polyacrylonitriles and alkali-hydrolysed polyacrylamides. Copolymers of acrylamide and acrylonitrile, of acrylamide and butyl acrylate, and the like, may also be used. The preferred addition is from 0.01 to 5 lbs./ton of suspended solids. The addition may be made prior to or during settling, thickening or filtration. A complex of a co-polymer may be formed by addition thereto of inorganic heavy metal ions, provided the complex is water-dispersible. Other flocculating materials such as colloids and electrolytes may be used at the same time. Settling-rate and/or filtration-rate tests were conducted on ore, coal, sand and oreresidue suspensions and on electrolytic refinery sludge.ALSO:A process of facilitating the dewatering of acidic aqueous suspensions of finely divided minerals having a pH not greater than 4 comprises subjecting them to the action of from 0,001 lb./ton to 10 lbs./ton of suspended solids of an acrylic polymer having at least 50 per cent of the monomer units attached to amide groups, the polymer having an average molecular weight of at least 10,000. Preferred polymers are: polyacrylamides of low, medium and high viscosities or molecular weight ranges, copolymers of acrylamide and acrylic acid, acid-hydrolysed polyacrylonitriles and alkalihydrolysed polyacrylamides. Co-polymers of acrylamide and acrylonitrile, of acrylamide and butyl acrylate, and the like, may also be used. The preferred addition is from 0,01 to 5 lbs./ton of suspended solids. The addition may be made prior to or during settling, thickening or filtration. A complex of a co-polymer may be formed by addition thereto of inorganic heavy metal ions, provided the complex is water-dispersible. Other flocculating materials such as colloids and electrolytes may be used at the same time. Settling-rate and/or filtration-rate tests were conducted on ore, coal, sand and ore-residue suspensions and on electrolytic refinery sludge.ALSO:A process of facilitating the dewatering of acidic aqueous suspensions of finely divided minerals having a pH not greater than 4 comprises subjecting them to the action of from 0.001 lb./ton to 10 lbs./ton of suspended solids of an acrylic polymer having at least 50 per cent of the monomer units attached to amide groups, the polymer having an average molecular weight of at least 10,000. Preferred polymers are: polyacrylamides of low, medium and high viscosities or molecular weight ranges, copolymers of acrylamide and acrylic acid. acid - hydrolysed polyacrylonitriles and alkali-hydrolysed polyacrylamides. Copolymers of acrylamide and acrylonitrile, of acrylamide and butyl acrylate, and the like, may also be used. The preferred addition is from 0.01 to 5 lbs./ton of suspended solids. The addition may be made prior to or during settling, thickening or filtration. A complex of a co-polymer may be formed by addition thereto of inorganic heavy metal ions, provided the complex is water-dispersible. Other flocculating materials such as colloids and electrolytes may be used at the same time. Settling-rate and/or filtration-rate tests were conducted on ore, coal, sand and ore-residue suspensions and on electrolytic refinery sludge.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US760279XA | 1953-10-16 | 1953-10-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB760279A true GB760279A (en) | 1956-10-31 |
Family
ID=22129477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB21547/54A Expired GB760279A (en) | 1953-10-16 | 1954-07-23 | Improvements relating to the treatment of acidic ore pulps and acidic suspensions ofminerals |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB760279A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3007793A (en) * | 1960-05-27 | 1961-11-07 | Allis Chalmers Mfg Co | Preparation of spectrographically nickel-free cobalt |
| DE1221016B (en) * | 1964-01-30 | 1966-07-14 | Stockhausen & Cie Chem Fab | Process for drying aqueous solutions of partially saponified polyacrylamide |
-
1954
- 1954-07-23 GB GB21547/54A patent/GB760279A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3007793A (en) * | 1960-05-27 | 1961-11-07 | Allis Chalmers Mfg Co | Preparation of spectrographically nickel-free cobalt |
| DE1221016B (en) * | 1964-01-30 | 1966-07-14 | Stockhausen & Cie Chem Fab | Process for drying aqueous solutions of partially saponified polyacrylamide |
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