A magnetic chip conveyor of the present invention reduces the possibility that both end portions of a long chip are adsorbed by two or more types of magnets having different magnetic forces, so that a long chip does not remain. An endless chain is disposed on the rear surface of a plate, so as to be wound around sprocket wheels. The sprocket wheel is rotated in the counterclockwise direction by a motor, and the endless chain rotates in the counterclockwise direction. Twelve magnet holders are fixed to the endless chain at equal intervals. Three types of permanent magnets having different magnetic forces are bonded and fixed to the magnet holders.

A system and method directed to the economical recovery of valuable iron constituents from iron blast furnace and steel-making slag fines wherein the slag is obtained and subjected to a series of classification steps which progressively sort the slag fines by various physical characteristics, including magnetism, size, and density, into relatively iron-rich and relatively iron-poor classifications, resulting in the isolation of iron-rich commercial byproduct at one or more of the classification steps.

A system and method directed to the economical recovery of valuable iron constituents from iron blast furnace and steel-making slag fines wherein the slag is obtained and subjected to a series of classification steps which progressively sort the slag fines by various physical characteristics, including magnetism, size, and density, into relatively iron-rich and relatively iron-poor classifications, resulting in the isolation of iron-rich commercial byproduct at one or more of the classification steps.

Methods of reducing copper metal content of shredded scrap steel are provided. The method includes continuously separating a first scrap steel fraction from an amount of scrap steel concurrently with separating a second fraction from the amount of scrap steel; continuously separating the second fraction and providing a nonmagnetic fraction and, concurrently, a third scrap steel fraction; grinding the nonmagnetic fraction followed by magnetic separation to provide a fourth scrap steel fraction and, concurrently, an enriched nonmagnetic fraction; continuously combining the first scrap steel fraction, the third scrap steel fraction, and the fourth scrap steel fraction to obtain a combined scrap steel product comprising scrap steel with reduced copper metal content; and introducing the combined scrap steel product to an electric arc furnace. Systems of reducing copper metal content of shredded scrap steel are also provided.

A system and method directed to the economical recovery of valuable iron constituents from iron blast furnace and steel-making slag fines wherein the slag is obtained and subjected to a series of classification steps which progressively sort the slag fines by various physical characteristics, including magnetism, size, and density, into relatively iron-rich and relatively iron-poor classifications, resulting in the isolation of iron-rich commercial byproduct at one or more of the classification steps.

A system and method directed to the economical recovery of valuable iron constituents from iron blast furnace and steel-making slag fines wherein the slag is obtained and subjected to a series of classification steps which progressively sort the slag fines by various physical characteristics, including magnetism, size, and density, into relatively iron-rich and relatively iron-poor classifications, resulting in the isolation of iron-rich commercial byproduct at one or more of the classification steps.

The present invention includes a method of controlling an oil spill through introduction of a plurality of magnetizable particles into the oil spill in an amount sufficient to form a colloidal mixture. An absorbent is, also introduced into the oil spill to form an absorbent mixture. A magnetic field can be applied to the system to move, manipulate, or otherwise control the absorbent mixture in response to movement of the magnetic field.

The present invention includes a method of controlling an oil spill through introduction of a plurality of magnetizable particles into the oil spill in an amount sufficient to form a colloidal mixture. An absorbent is, also introduced into the oil spill to form an absorbent mixture. A magnetic field can be applied to the system to move, manipulate, or otherwise control the absorbent mixture in response to movement of the magnetic field.

A magnetic chip conveyor of the present invention reduces the possibility that both end portions of a long chip are adsorbed by two or more types of magnets having different magnetic forces, so that a long chip does not remain. An endless chain is disposed on the rear surface of a plate, so as to be wound around sprocket wheels. The sprocket wheel is rotated in the counterclockwise direction by a motor, and the endless chain rotates in the counterclockwise direction. Twelve magnet holders are fixed to the endless chain at equal intervals. Three types of permanent magnets having different magnetic forces are bonded and fixed to the magnet holders.

A method is provided for pre-treating biomasses, more particularly, for pre-treating biomasses intended for a biorefinery or similar facility for producing biofuels. The method comprises the steps of shredding the biomasses, removing foreign bodies contained in the biomasses upstream of the step of shredding, and soaking the biomasses by immersing the biomasses in water upstream or downstream of the shredding step. A plant for pre-treating biomasses is also provided. The plant comprises a shredding station for shredding biomasses, a station for removing foreign bodies from the biomasses upstream of the shredding station, and a soaking station for soaking the biomasses upstream or downstream of the shredding station.