Abstract: The present invention relates to a method of manufacturing a slag discharge door, which is provided separately from a molten-steel discharge opening in an electric furnace and opens and closes a slag discharge opening for discharging slag. The method of manufacturing the slag discharge door, which moves up and down on the slag discharge opening to open and close the slag discharge opening, includes the steps of: forming a door body by forging, forming a coolant passage, a coolant inlet, and a coolant outlet in the door body by drilling, and then finishing a passage that blocks a portion that is open toward an outer surface of the door body.

Abstract: A slag discharge door device for an electric furnace is provided. The device prevents slag from flowing out via a slag discharge port by making a discharge control door body move up and down to and from the upper surface of a supporting body where slag is discharged by flowing to the upper surface, and the discharge of slag is controlled, such that during steel-making work in the electric furnace, the outflow of slag is prevented and heat losses are reduced, the efficiency of arc heat due to the formation of foamed slag is increased, and valuable metals are recovered from the molten slag thereby increasing the percentage of molten steel recovered.

Abstract: Disclosed herein is a method of reducing slag, including the steps of: examining the components of slag to be reduced, and setting a target composition ratio after reduction; determining the mixing ratio and input amount of a complex reducing agent of a plurality of reducing agents in accordance with the set target composition ratio to determine the complex reducing agent; and supplying the complex reducing agent into molten slag to reduce the slag. The method is advantageous in that the reduction efficiency of slag can be maximized, various kinds of reducing agents can be efficiently used, and the recovery amount of valuable metals can be increased, thus reducing cost.

Abstract: An apparatus for recovering valuable metals and manufacturing multifunctional aggregate from slag. The apparatus includes a slag reforming processing pot 10 in which molten slag discharged from a converter or an electric furnace is stored, a reducing agent introducing part 20 which introduces a reducing agent into the slag reforming processing pot from above, the reducing agent recovering valuable metals from the molten slag, a reducing agent inflow part 25 which inputs a reducing agent into the slag reforming processing pot through a lower portion of a side of the slag reforming processing pot, the reducing agent recovering valuable metals from the molten slag, and cooling units 30 and 40 which create bubbles and perform controlled cooling in order to convert the molten slag, from which the valuable metals are recovered, into a light material having a porous structure.

Abstract: A compactor and to an apparatus for manufacturing compressed scrap. The apparatus for manufacturing scrap compactors includes a core having a through-hole formed in a scrap compactor (S), thereby improving the melting behavior of the scrap compactor via the through-hole (h), and also has the effect of preventing the deliberate misrepresentation of the weight of the contents of the scrap compactor carried out by inserting heavy substances into the scrap compactor instead of scrap.

Abstract: The present invention relates to an apparatus for atomizing molten slag and recovering valuable metals, and more particularly to an apparatus for atomizing molten slag and recovering valuable metals, which enables molten slag of a blast furnace or a converter or an electric furnace to be atomized and valuable metals to be recovered.

Abstract: Disclosed herein is a method of reducing slag, including the steps of: examining the components of slag to be reduced, and setting a target composition ratio after reduction; determining the mixing ratio and input amount of a complex reducing agent of a plurality of reducing agents in accordance with the set target composition ratio to determine the complex reducing agent; and supplying the complex reducing agent into molten slag to reduce the slag. The method is advantageous in that the reduction efficiency of slag can be maximized, various kinds of reducing agents can be efficiently used, and the recovery amount of valuable metals can be increased, thus reducing cost.

Abstract: The present invention relates to a method of manufacturing a slag discharge door, which is provided separately from a molten-steel discharge opening in an electric furnace and opens and closes a slag discharge opening for discharging slag. The method of manufacturing the slag discharge door, which moves up and down on the slag discharge opening to open and close the slag discharge opening, includes the steps of: forming a door body by forging, forming a coolant passage, a coolant inlet, and a coolant outlet in the door body by drilling, and then finishing a passage that blocks a portion that is open toward an outer surface of the door body.

Abstract: An apparatus for recovering valuable metals and manufacturing multifunctional aggregate from slag. The apparatus includes a slag reforming processing pot 10 in which molten slag discharged from a converter or an electric furnace is stored, a reducing agent introducing part 20 which introduces a reducing agent into the slag reforming processing pot from above, the reducing agent recovering valuable metals from the molten slag, a reducing agent inflow part 25 which inputs a reducing agent into the slag reforming processing pot through a lower portion of a side of the slag reforming processing pot, the reducing agent recovering valuable metals from the molten slag, and cooling units 30 and 40 which create bubbles and perform controlled cooling in order to convert the molten slag, from which the valuable metals are recovered, into a light material having a porous structure.

Abstract: The present invention relates to a slag discharge door device for an electric furnace, wherein slag is prevented from flowing out via a slag discharge port by making a discharge control door body move up and down to and from the upper surface of a supporting body where slag is discharged by flowing to the upper surface, and the discharge of slag is controlled, such that during steel-making work in the electric furnace, the outflow of slag is prevented and heat losses are reduced, the efficiency of arc heat due to the formation of foamed slag is increased, and valuable metals are recovered from the molten slag thereby increasing the percentage of molten steel recovered.

Abstract: The present invention relates to an apparatus for atomizing molten slag and recovering valuable metals, and more particularly to an apparatus for atomizing molten slag and recovering valuable metals, which enables molten slag of a blast furnace or a converter or an electric furnace to be atomized and valuable metals to be recovered.

Abstract: The present invention relates to a scrap compactor and to an apparatus for manufacturing same. The apparatus for manufacturing scrap compactors includes a core by means of which a through-hole can be formed in a scrap compactor (S), improves the melting behavior of the scrap compactor by means of the through-hole (h), and also has the effect of preventing the deliberate misrepresentation of the weight of the contents of the scrap compactor carried out by inserting heavy substances into the scrap compactor instead of scrap.

Abstract: System for processing transportation information using a communication network, comprising a customer communication means for performing a direct call connection to a transportation vehicle; a plurality of communication means provided with the transportation vehicle for performing a direct call connection with the customer communication means; an information database means for storing subscriber information; a host server means in which is operated such that the customer communication means makes a direct call connection to the communication means of the transportation vehicles sequentially according to the predetermined order based on the subscriber information and the connection history information in the information database means; and a data relay means for performing a direct call connection to the customer communication means.

Abstract: The system for processing transportation information using a communication network comprises a customer communication means for performing a direct call connection to a transportation vehicle by the operation of a customer who wants to use a transportation service through the transportation vehicle; a plurality of communication means for transportation vehicles provided with the transportation vehicle for providing a transportation service for performing a direct call connection with the customer communication means; an information database means for storing subscriber information on the plurality of transportation vehicles and communication means of transportation vehicles, connection history information of the communication means of each transportation vehicle and information on a charge as a cost for service of the customer communication means; a host server means in which is operated such that the customer communication means makes a direct call connection to the communication means of the transportation

Abstract: The system for processing transportation information using a communication network comprises a customer communication means for performing a direct call connection to a transportation vehicle by the operation of a customer who wants to use a transportation service through the transportation vehicle; a plurality of communication means for transportation vehicles provided with the transportation vehicle for providing a transportation service for performing a direct call connection with the customer communication means; an information database means for storing subscriber information on the plurality of transportation vehicles and communication means of transportation vehicles, connection history information of the communication means of each transportation vehicle and information on a charge as a cost for service of the customer communication means; a host server means in which is operated such that the customer communication means makes a direct call connection to the communication means of the transportation

Abstract: The system for processing transportation information using a communication network comprises a customer communication means for performing a direct call connection to a transportation vehicle by the operation of a customer who wants to use a transportation service through the transportation vehicle; a plurality of communication means for transportation vehicles provided with the transportation vehicle for providing a transportation service for performing a direct call connection with the customer communication means; an information database means for storing subscriber information on the plurality of transportation vehicles and communication means of transportation vehicles, connection history information of the communication means of each transportation vehicle and information on a charge as a cost for service of the customer communication means; a host server means in which is operated such that the customer communication means makes a direct call connection to the communication means of the transportation