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Class Information
Number: 209/8
Name: Classifying, separating, and assorting solids > Precedent preparation of items or materials to facilitate separation > Selective differentiation > Magnetizing and demagnetizing
Description: Methods and apparatus for developing or for neutralizing or destroying magnetic properties of components of a mixture to permit or facilitate subsequent separation of the components of the mixture.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7478727 |
Hot magnetic separator process and apparatus |
Jan. 20, 2009 |
| 7473407 |
Magnetic separation process for trona |
Jan. 6, 2009 |
| 7318528 |
Precious metal recovery |
Jan. 15, 2008 |
| 7258236 |
Methods and devices utilizing adsorption of chiral molecules at a surface or interface |
Aug. 21, 2007 |
| 7183104 |
Separator and particle detection system |
Feb. 27, 2007 |
| 7063213 |
Mediating electrostatic separation |
Jun. 20, 2006 |
| 6920982 |
Plastic material having enhanced magnetic susceptibility, method of making and method of separating |
Jul. 26, 2005 |
| 6537385 |
Rare earth magnet and method for manufacturing the same |
Mar. 25, 2003 |
| 6316235 |
Preparation and use of magnetically susceptible polymer particles |
Nov. 13, 2001 |
| 6220444 |
Method and apparatus for marking containers with magnetic code and detecting the marked container using a magnetic sensing device |
Apr. 24, 2001 |
| 6110085 |
Coated roller with permanent identification and method for providing such identification |
Aug. 29, 2000 |
| 6070733 |
Treatment of waste material |
Jun. 6, 2000 |
| 6006920 |
Brightness, reduced impurity clays and methods of making same |
Dec. 28, 1999 |
| 5985134 |
Startup of magnetic separation process in an FCC unit |
Nov. 16, 1999 |
| 5685952 |
Deinking of paper using magnetic forces |
Nov. 11, 1997 |
| 5684712 |
Apparatus and method for cell separation |
Nov. 4, 1997 |
| 5607575 |
Process for removing iron impurities from petroleum oil distillation residues |
Mar. 4, 1997 |
| 5538701 |
Process to remove actinides from soil using magnetic separation |
Jul. 23, 1996 |
| 5538701 |
Process to remove actinides from soil using magnetic separation |
Jul. 23, 1996 |
| RE35046 |
Addition of magnetically active moieties for magnetic beneficiation of particulates in fluid bed hydrocarbon processing |
Oct. 3, 1995 |
| 5332493 |
Method for improving rheological properties of kaolin clays |
Jul. 26, 1994 |
| 5297744 |
Magnetic tub grinder |
Mar. 29, 1994 |
| 5230869 |
Addition of magnetically active moieties for magnetic beneficiation of particulates in fluid bed hydrocarbon processing |
Jul. 27, 1993 |
| 5213590 |
Article and a method for producing an article having a high friction surface |
May. 25, 1993 |
| 5205414 |
Process for improving the concentration of non-magnetic high specific gravity minerals |
Apr. 27, 1993 |
| 5170890 |
Particle trap |
Dec. 15, 1992 |
| 5171424 |
Magnetic separation of old from new cracking catalyst by means of heavy rare earth "magnetic hooks" |
Dec. 15, 1992 |
| 5161694 |
Method for separating fine particles by selective hydrophobic coagulation |
Nov. 10, 1992 |
| 5147527 |
Magnetic separation of high metals containing catalysts into low, intermediate and high metals and activity catalyst |
Sep. 15, 1992 |
| 5116434 |
Method of manufacturing, concentrating, and separating enhanced magnetic parameter material from other magnetic co-products |
May. 26, 1992 |
| 5106486 |
Addition of magnetically active moieties for magnetic beneficiation of particulates in fluid bed hydrocarbon processing |
Apr. 21, 1992 |
| 5035331 |
Method and apparatus for removing dust and debris from particulate product |
Jul. 30, 1991 |
| 4834811 |
Method of manufacturing, concentrating, and separating enhanced magnetic parameter material from other magnetic co-products |
May. 30, 1989 |
| 4830634 |
Preparation of coal substitute of low ash and sulfur |
May. 16, 1989 |
| 4810368 |
Automatic method for separating and cleaning silicon carbide furnace materials |
Mar. 7, 1989 |
| 4765486 |
Method for obtaining a purified fraction from a mixture using a magnetic fluid |
Aug. 23, 1988 |
| 4735707 |
Removing mineral matter from solid carbonaceous fuels |
Apr. 5, 1988 |
| 4726895 |
Process for concentration of gold and uranium magnetically |
Feb. 23, 1988 |
| 4717469 |
Device for scavenging metal from earth deposits |
Jan. 5, 1988 |
| 4686032 |
Automatic method for separating and cleaning silicon carbide furnace materials |
Aug. 11, 1987 |
| 4661118 |
Method for oxidation of pyrite in coal to magnetite and low field magnetic separation thereof |
Apr. 28, 1987 |
| 4659022 |
Production of silicon carbide with automatic separation of a high grade fraction |
Apr. 21, 1987 |
| 4657666 |
Magnetic flotation |
Apr. 14, 1987 |
| 4643822 |
Method of separation of material from material mixtures |
Feb. 17, 1987 |
| 4631124 |
Kinetic gravity deduster |
Dec. 23, 1986 |
| 4545896 |
Upgrading concentrates of paramagnetic sulfide minerals |
Oct. 8, 1985 |
| 4523996 |
Method of separating cationic from anionic beads in mixed resin beds |
Jun. 18, 1985 |
| 4476027 |
Use of magnetic separation in scavenging hydrogen sulfide |
Oct. 9, 1984 |
| 4466362 |
Method of removing sulfur and other contaminants from the coal in coal-oil slurries |
Aug. 21, 1984 |
| 4437861 |
Coal-deashing process |
Mar. 20, 1984 |
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