A method of charging a pre-packaged charge in a metallurgical or refining furnace includes providing a disposable metal container having at least one attachment member and forming a pre-packaged charge by loading scrap material into the metal container. The method also includes releasably coupling the at least one attachment member of the container to a lifting device, and then de-coupling the pre-packaged charge from the lifting device so that the combination of the scrap material and the disposable metal container are charged in the furnace.

Provided is a method of batching and scheduling for steelmaking production with plant-wide process consideration, including the steps of: establishing a mathematical model for quantitatively describing the decision problem of batching on steelmaking and continuous casting procedures; starting from the production capacity balance between parallel equipment of the same procedure, and material flow convergence between upstream and downstream procedures, establishing a model for the assignment and sequencing of batches on continuous casting equipment and the time dimension; integrating the batching plan and the production scheduling scheme, issuing the batching plan and the production scheduling scheme integrated to all production and manufacturing units at the steelmaking stage. The present invention improves product quality, increases the material yield, resource utilization rate and equipment operation efficiency, realizes load balance on parallel equipment and smooth material linkage between serial equipment, and reduces the material flow transportation jam, downstream equipment waiting time and inventory.

A production apparatus and method for electric arc furnace steelmaking with a fully continuous ultra-short process are provided. A continuous adding, melting, smelting and continuous casting of a metal material are integrated, and a metallurgy process is completed in a flowing of a molten steel, to realize a continuous production of ingot blanks. The production apparatus includes four operation sites of an electric arc furnace for melting and primary refining, a sealed tapping chute for molten steel flowing, a refinement storage bed for molten-steel desulfurization and alloying and a conticaster for continuous casting A material flow, an energy flow and a time stream in the four operation sites are in a dynamic equilibrium. The production apparatus and method realize a molten-steel casting is started within 120 minutes after the metal material is started to be continuously added, and an uninterrupted continuous production is maintained for above 80 hours.

A production apparatus and method for electric arc furnace steelmaking with a fully continuous ultra-short process are provided. A continuous adding, melting, smelting and continuous casting of a metal material are integrated, and a metallurgy process is completed in a flowing of a molten steel, to realize a continuous production of ingot blanks. The production apparatus includes four operation sites of an electric arc furnace for melting and primary refining, a sealed tapping chute for molten steel flowing, a refinement storage bed for molten-steel desulfurization and alloying and a conticaster for continuous casting A material flow, an energy flow and a time stream in the four operation sites are in a dynamic equilibrium. The production apparatus and method realize a molten-steel casting is started within 120 minutes after the metal material is started to be continuously added, and an uninterrupted continuous production is maintained for above 80 hours.

A method of charging a pre-packaged charge in a metallurgical or refining furnace includes providing a disposable metal container having at least one attachment member and forming a pre-packaged charge by loading scrap material into the metal container. The method also includes releasably coupling the at least one attachment member of the container to a lifting device, and then de-coupling the pre-packaged charge from the lifting device so that the combination of the scrap material and the disposable metal container are charged in the furnace.

A method of charging a pre-packaged charge in a metallurgical or refining furnace includes providing a disposable metal container having at least one attachment member and forming a pre-packaged charge by loading scrap material into the metal container. The method also includes releasably coupling the at least one attachment member of the container to a lifting device, and then de-coupling the pre-packaged charge from the lifting device so that the combination of the scrap material and the disposable metal container are charged in the furnace.

The present invention discloses a scrap steel preheating type electric arc furnace and a method for improving a heating cold region of a side wall charging electric arc furnace. This invention includes an electric arc furnace body and an inclined scrap steel preheating chamber. An included angle between the inclined scrap steel preheating chamber and a horizontal plane is 30 to 65. Flue gas enters the inclined scrap steel preheating chamber, penetrates through the material blocking tooth rake and the scrap steel and is sucked out. The preheated scrap steel slides to a center of the electric arc furnace body along a slot bottom of the inclined scrap steel preheating chamber. The present invention overcomes a problem of lateral stacking of the side wall charging electric arc furnace, reducing impact force of the scrap steel to the device and greatly enhancing reliability of the device.

Provided is a method of batching and scheduling for steelmaking production with plant-wide process consideration, including the steps of: establishing a mathematical model for quantitatively describing the decision problem of batching on steelmaking and continuous casting procedures; starting from the production capacity balance between parallel equipment of the same procedure, and material flow convergence between upstream and downstream procedures, establishing a model for the assignment and sequencing of batches on continuous casting equipment and the time dimension; integrating the batching plan and the production scheduling scheme, issuing the batching plan and the production scheduling scheme integrated to all production and manufacturing units at the steelmaking stage. The present invention improves product quality, increases the material yield, resource utilization rate and equipment operation efficiency, realizes load balance on parallel equipment and smooth material linkage between serial equipment, and reduces the material flow transportation jam, downstream equipment waiting time and inventory.

An exhaust gas treatment method includes: burning a combustible component in exhaust gas by causing the exhaust gas, which is produced in an electric furnace, to flow into a slag holding furnace and supplying oxygen-containing gas into the slag holding furnace; causing the burned exhaust gas to flow from the slag holding furnace to a suction device through an exhaust gas pipe; adjusting an internal pressure of the electric furnace by introducing external air into the exhaust gas pipe through an opening portion provided in the middle of the exhaust gas pipe; and changing an area of the opening portion depending on a variation in the internal pressure of the electric furnace by using an opening area changing unit provided in the opening portion.

An electric furnace with energy utilization efficiency at a low cost. In an electric furnace, a preheating chamber 2 with a melting chamber 1 is used to preheat iron scrap x, an exhaust gas generated in melting chamber 1 is passed through preheating chamber 2 filled with the iron scrap x to preheat the iron scrap x, the iron scrap x descends in the preheating chamber 2 to be supplied into melting chamber 1, and the iron scrap x is melted to obtain molten iron m. The iron scrap x is charged into preheating chamber 2 so that bulk density is not less than 0.50 t/m.sup.3 and less than 1.00 t/m.sup.3 and an iron scrap filling ratio H.sub.SC/H.sub.SF in the preheating chamber 2 is 0.5 to 0.8. A carbonaceous material is used for melting the iron scrap x, and oxygen and the carbonaceous material are blown into the melting chamber.