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System for releasing gas into molten metal

Patent Number: 8440135
Publication Date: 2013-05-14
Inventor:

A device for releasing gas into molten metal includes a base having a discharge. The discharge has a first section including a first cross-sectional area and a second section including a second cross-sectional area, wherein the first section is upstream of the second section and the first cross-sectional area is smaller than the second cross-sectional area. A gas-release opening is positioned so that it can release gas into one or more of the first section or the second section. As the ...

Furnace system

Patent Number: 8440134
Publication Date: 2013-05-14
Inventors: ;

A furnace system has a furnace, particularly an arc furnace, for melting metal, and a cleaning device for removing and/or avoiding bulk goods from or in a furnace opening. The cleaning device has a movable thrust arm for carrying out a thrust movement, and a movement device for moving the thrust arm between a parking level and an operating level. The use of a furnace opening is further made more flexible in that a work platform forming a work level is present, from which the furnace opening ...

Cooling apparatus, cooling method, manufacturing apparatus and manufacturing method of hot-rolled steel sheet

Patent Number: 8440133
Publication Date: 2013-05-14
Inventors: ;

The present invention provides a cooling apparatus of a hot-rolled steel sheet capable of manufacturing a hot-rolled steel sheet having ultra fine crystal grains. In the cooling apparatus, when defining as L1, a length in a transporting direction of a steel sheet, of a zone from a rolling reduction point in a final stand to an exit side of a housing post; defining as L2, a length in the transporting direction of the steel sheet, of an area where high-pressure water is continuously sprayed ...

System for decreasing amount of organic solution in the liquid-liquid extraction process

Patent Number: 8435442
Publication Date: 2013-05-07
Inventors: ;

The invention relates to a system used in the liquid-liquid extraction of metals, enabling the amount of organic solution required in the various stages of extraction to be significantly reduced. In accordance with the invention, the settler unit of one step belonging to an extraction system is selected to function also as the organic solution storage and pumping ...

Injector for arc furnace

Patent Number: 8425832
Publication Date: 2013-04-23
Inventor:

The present invention relates to an injector for an arc furnace. The injector comprises a head suitable to face into the furnace and a body suitable to support the head. The head and body are manufactured separately from each other, and are fastened by means of removable connection means in order to implement said ...

Method and device for producing stainless steel without using a supply of electrical energy, based on pig-iron that has been pre-treated in a DDD installation

Patent Number: 8425831
Publication Date: 2013-04-23
Inventor:

An installation for producing stainless steel for all stainless steel products both in the austenitic and the ferritic range, based on liquid pig-iron and FeCr solids, without using a supply of electrical energy. The liquid pig-iron, after being pre-treated in a blast furnace, is subjected to a DDD treatment (dephosphorization, desiliconization and desulphurization), is heated, finished or alloyed and deoxidated. The quantity of slag-free liquid pig-iron that has been pre-treated in the ...