Alcoa Inc.

Alcoa USA Corp.

Vincent Paola

Vivek M Sample

Ronald G Chabal

Scott E Reighard

Domenic A Ghiardi

Mark Weaver

Judodine Nichols

Jacob A Kallivayalil

John Cravener

Narsimhan Raghunathan

Mark A Newborn

David E Gaylord

Broadly, the instant disclosure is directed towards: fertilizer compositions and methods of making the same, in which, due to the composition, the fertilizer exhibits blast suppression (e.g. measured via specific impulse) and/or desensitization (e.g. measured via unconfined critical diameter and/or booster quantity needed to initiate detonation) as compared to existing ammonium nitrate fertilizer(s).

Fertilizer compositions and methods of making and using the same

This invention discloses a molten metal supply system that can supply molten metal to a downstream process at a constant pressure and molten metal flow rate. The molten metal supply system includes a molten metal supply source, a plurality of injectors, and a plurality of check valves.

Apparatus and method for high pressure extrusion with molten aluminum

A molten metal supply system () includes a plurality of injectors () each having an injector housing () and a reciprocating piston (). A molten metal supply source () is in fluid communication with the housing () of each of the injectors (). The piston () is movable through a first stroke allowing molten metal () to be received into the housing () from the molten metal supply source (), and a second stroke for displacing the molten metal () from the housing (). A pressurized gas supply source () is in fluid communication with the housing () of each of the injectors () through respective gas control valves (). The molten metal supply system () is in fluid communication with an outlet manifold () having a plurality of outlet dies (), which may be used to form continuous metal articles including rods, bars, ingots, and continuous plate.

Continuous pressure molten metal supply system and method for forming continuous metal articles

A molten metal supply system ( ) includes a plurality of injectors ( ) each having an injector housing ( ) and a reciprocating piston ( ). A molten metal supply source ( ) is in fluid communication with the housing ( ) of each of the injectors ( ). The piston ( ) is movable through a first stroke allowing molten metal ( ) to be received into the housing ( ) from the molten metal supply source ( ), and a second stroke for displacing the molten metal ( ) from the housing ( ). A pressurized gas supply source ( ) is in fluid communication with the housing ( ) of each of the injectors ( ) through respective gas control valves ( ). The injectors ( ) each include an intake/injection port ( ) in the form of a dual action valve ( ) adapted to admit and dispense molten metal from the injectors ( ).

Dual action valve for molten metal applications

A molten metal supply system ( ) includes a plurality of injectors ( ) each having an injector housing ( ) and a reciprocating piston ( ). A molten metal supply source ( ) is in fluid communication with the housing ( ) of each of the injectors ( ). The piston ( ) is movable through a return stroke allowing molten metal ( ) to be received into the housing ( ) from the molten metal supply source ( ), and a displacement stroke for displacing the molten metal ( ) from the housing ( ). A pressurized gas supply source ( ) is in fluid communication with the housing ( ) of each of the injectors ( ) through respective gas control valves ( ). The gas supply source ( ) is used to pressurize a space formed between the molten metal ( ) and the piston ( ) during the return stroke of the piston ( ) of each of the injectors ( ).

Continuous pressure molten metal supply system and method

A molten metal supply system ( ) includes a plurality of injectors ( ) each having an injector housing ( ) and a reciprocating piston ( ). A molten metal supply source ( ) is in fluid communication with the housing ( ) of each of the injectors ( ). The piston ( ) is movable through a first stroke allowing molten metal ( ) to be received into the housing ( ) from the molten metal supply source ( ), and a second stroke for displacing the molten metal ( ) from the housing ( ). A pressurized gas supply source ( ) is in fluid communication with the housing ( ) of each of the injectors ( ) through respective gas control valves ( ). The molten metal supply system ( ) is in fluid communication with an outlet manifold ( ) having a plurality of outlet dies ( ), which may be used to form continuous metal articles including rods, bars, ingots, and continuous plate.

An injector ( ) for a molten metal supply system includes an injector housing ( ) configured to contain molten metal. A molten metal supply source ( ) is in fluid communication with the housing ( ). A piston ( ) extends into the housing ( ). The piston ( ) is movable through a return stroke allowing molten metal ( ) to be received into the housing ( ) from the molten metal supply source ( ), and a displacement stroke for displacing the molten metal ( ) from the housing ( ). A gas supply source ( ) is in fluid communication with the housing ( ) through a gas control valve ( ). The gas supply source ( ) is used to pressurize a space ( ) formed between the molten metal ( ) and the piston ( ) during the return stroke of the piston ( ) such that when the piston ( ) moves through the displacement stroke a compressed gas filled space is formed.

Injector for molten metal supply system

An injector ( ) for a molten metal supply system includes an injector housing (102) configured to contain molten metal. A molten metal supply source ( ) is in fluid communication with the housing ( ). A piston ( ) extends into the housing ( ). The piston ( ) is movable through a return stroke allowing molten metal ( ) to be received into the housing ( ) from the molten metal supply source ( ), and a displacement stroke for displacing the molten metal ( ) from the housing ( ). A gas supply source ( ) is in fluid communication with the housing ( ) through a gas control valve ( ). The gas supply source ( ) is used to pressurize a space ( ) formed between the molten metal ( ) and the piston ( ) during the return stroke of the piston ( ) such that when the piston ( ) moves through the displacement stroke a compressed gas filled space is formed.

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Jeannette, PA, United States of America

Vincent Paola