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Class Information
Number: 209/9
Name: Classifying, separating, and assorting solids > Precedent preparation of items or materials to facilitate separation > Selective differentiation > Surface
Description: Methods and apparatus whereby the surfaces of some components of a mixture are altered to permit or facilitate their separation from other components.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6805242 |
Method of reducing phosphate ore losses in a desliming process |
Oct. 19, 2004 |
| 6662951 |
Process for extracting and purifying naturally occurring zeolite |
Dec. 16, 2003 |
| 6607248 |
Low elevation coal processing plant |
Aug. 19, 2003 |
| 6412642 |
Method of applying marking to metal sheet for scrap sorting purposes |
Jul. 2, 2002 |
| 6206199 |
Method and an apparatus for recycling different components in a multiple layer material |
Mar. 27, 2001 |
| 6145666 |
Cleansing contaminants from a heterogeneous material using a sorption agent |
Nov. 14, 2000 |
| 6126014 |
Continuous air agglomeration method for high carbon fly ash beneficiation |
Oct. 3, 2000 |
| 5653867 |
Method for the separation of high impact polystyrene (HIPS) and acrylonitrile butadiene styrene (ABS) plastics |
Aug. 5, 1997 |
| 5566832 |
Method for sorting plastics from a particle mixture composed of different plastics |
Oct. 22, 1996 |
| 5489028 |
Method of removing foreign material from a row of fiber bales and a bale opening machine therefor |
Feb. 6, 1996 |
| 5397066 |
Separation of plastic materials |
Mar. 14, 1995 |
| 5358120 |
Selective separation of finely-divided minerals by addition of selective collector reagent and centrifugation |
Oct. 25, 1994 |
| 5328594 |
Magnetic separation of old from new cracking catalyst by means of heavy rare earth "magnetic hooks" |
Jul. 12, 1994 |
| 5311997 |
Selective separation of finely-divided minerals by addition of selective collector reagent and centrifugation |
May. 17, 1994 |
| 5244155 |
Solid-solid separations utilizing alkanol amines |
Sep. 14, 1993 |
| 5161694 |
Method for separating fine particles by selective hydrophobic coagulation |
Nov. 10, 1992 |
| 5147045 |
Particulate separations by electrostatic coalescence |
Sep. 15, 1992 |
| 4843959 |
Producing piles of serially-indexed papers from a plurality of unindexed imprints |
Jul. 4, 1989 |
| 4775627 |
Coal desulfurization using bacteria adaptation and bacterial modification of pyrite surfaces |
Oct. 4, 1988 |
| 4767506 |
Electrostatic treatment of milled crude potash salts containing kieserite |
Aug. 30, 1988 |
| 4744889 |
Separation of viscous hydrocarbons and minerals particles from aqueous mixtures by mixtures by oleophilic adhesion |
May. 17, 1988 |
| 4686032 |
Automatic method for separating and cleaning silicon carbide furnace materials |
Aug. 11, 1987 |
| 4677910 |
Process for processing security paper webs or security paper sheets to form bundles of security papers |
Jul. 7, 1987 |
| 4657666 |
Magnetic flotation |
Apr. 14, 1987 |
| 4605420 |
Method for the beneficiation of oxidized coal |
Aug. 12, 1986 |
| 4600505 |
Single float step phosphate ore beneficiation |
Jul. 15, 1986 |
| 4588498 |
Single float step phosphate ore beneficiation |
May. 13, 1986 |
| 4585548 |
Recovery of metal values from mineral ores by incorporation in coal-oil agglomerates |
Apr. 29, 1986 |
| T106002 |
Single float step phosphate ore beneficiation |
Nov. 5, 1985 |
| 4540484 |
Method and apparatus for separating selected particulate materials from a mixture of liquids and solids |
Sep. 10, 1985 |
| 4529506 |
Method for cleaning fine coal |
Jul. 16, 1985 |
| 4525335 |
Method of manufacturing crystalline silicon nitride and method of separation thereof |
Jun. 25, 1985 |
| 4504384 |
Trithiocarbonates as ore flotation agents |
Mar. 12, 1985 |
| 4460459 |
Sequential flotation of sulfide ores |
Jul. 17, 1984 |
| 4437982 |
Separation of clay from coal |
Mar. 20, 1984 |
| 4419228 |
Process for producing high brightness clays utilizing magnetic beneficiation and calcining |
Dec. 6, 1983 |
| 4412843 |
Beneficiated coal, coal mixtures and processes for the production thereof |
Nov. 1, 1983 |
| 4406781 |
Process for the separation of mineral substances |
Sep. 27, 1983 |
| 4388180 |
Method for beneficiation of phosphate rock |
Jun. 14, 1983 |
| 4377473 |
Method for concentrating the exinite group macerals from coal by froth flotation |
Mar. 22, 1983 |
| 4377472 |
Phosphate flotation |
Mar. 22, 1983 |
| 4376708 |
Flotation processes using ureylenes |
Mar. 15, 1983 |
| 4364824 |
Flotation of phosphate ores containing dolomite |
Dec. 21, 1982 |
| 4358368 |
Process for the froth flotation of calcium phosphate-containing minerals and flotation agents therefor |
Nov. 9, 1982 |
| 4352731 |
Apparatus for selective wetting of particles |
Oct. 5, 1982 |
| 4348287 |
Zirconium compounds as flotation aid |
Sep. 7, 1982 |
| 4343694 |
Magnetic beneficiation of clays utilizing magnetic seeding and flotation |
Aug. 10, 1982 |
| 4317543 |
Process for separating copper and iron minerals from molybdenite |
Mar. 2, 1982 |
| 4308132 |
Bituminous coal reagent and flotation process |
Dec. 29, 1981 |
| 4297108 |
Desulfurization of coal |
Oct. 27, 1981 |
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