TH17964A - "Arc arc furnace uses direct current and how to use it" - Google Patents

Claims (1)

1. The electric arc furnace uses direct current. For melting raw materials by Producing electric spark The electric spark furnace was equipped with a melting vessel with a conductive bottom vessel, a top vessel and a lid. Fire-resistant lining Tightly in the melting container Negative electrode Movable Vertically interchangeable is placed in the middle of the container cover. And sealed with arms Support electrode The negative electrode protrudes above the container lid. And through the lid of the container In order to enter the melting container An anode electrode operation is performed with a large number of positive plates in the bottom of the container below. And has a current source Direct power is connected with multiple wires to the aforementioned negative electrode. With the operation to have Such anode electrode To create an electric loop To produce the desired electric spark through such raw materials Electric spark furnace at such a curve Unique by shape Important: a) Multiple splicing sheets Adjustable mounting bracket with the bottom part. Of the below containers Each connection plate is limited to the conductive area of the Conducted positive electrode; b) many electrically regulated power devices. Which includes the source Such direct current Each power supply unit conveys electricity through the wires. One line to the corresponding connecting plate c) Positioning device To immobilize multiple wires in a horizontal plane Fixed to the perimeter of the bottom container; and For independent control of current Relayed by each power distribution unit to a corresponding connection plate where the location and deflection of the spark is forced by controlling the relayed current. With each cable supplying power And by adjusting the position of the connecting plate 2. The arc arc furnace in clause 1 is unique in that the bottom container includes a steel casing. And in that the wires from the power source Such direct current goes to the connecting plate. Is placed across the steel casing. In such a way that the steel casing Protection against direct current in the loop of current from the field The magnets formed around the electric wires 3. The arc furnaces in clause 1 are unique to such direct current sources, including at least two rectifier power wires connecting the plates on the lower container. 4. The arc furnace arc according to item 1 is unique on the bottom container. Being protected from leakage from the upper container 5. The arc furnace in clause 1 is unique in that each isolated current, which is transmitted from the electric power through each of these wires to the connecting plate, can be adjusted. Can be made continuously By adjusting the tools, devices that adjust the current. 6. Arc arc furnace uses direct current. For melting raw materials by Producing electric spark The electric spark furnace was equipped with a melting vessel with a conductive bottom vessel, a top vessel and a lid. Fire-resistant lining Tightly in the melting container Negative electrode Which can be rotated vertically, is placed at the center of the container cover And sealed with an electrode support arm The negative electrode protrudes above the container lid. And through the lid of the container In order to take in Melting container An anode electrode operation is performed with the anode plate. In the bottom of the container below. And has a direct current source connected to Many wires go to the aforementioned negative electrode. With the operation to have electrodes Such anode To create a loop of step-up current That will produce the desired electric spark through such raw materials The arc furnace is characterized by the following key shapes: a) The plates include four welded plates. That was installed With the bottom of the container below it Four discs to make such connections were placed in Position to be bounded by four conductive areas Which has a mix of action to have Anode electrode Which has two conductive areas Which is close to the power supply and two further conductive areas; b) four forced power lines. Included in such a direct current source, each power line transmits current through the wire to the corresponding splice plate. C) The device places the wire in a horizontal plane. The positioning device is attached to the perimeter of the The container below; and To regulate an independent current Each electric wire is transmitted to the corresponding connection plate, where the position and deflection of the spark is controlled. It is then directed to the middle of the arc arc furnace by controlling the current transmitted by the power line Until the flow goes To the area that conducts electricity near The current is less than the current transferred to the distant conductive area and by adjusting the position of the connecting plate. 7. The arc furnace in clause 6 is unique to the connecting plate. For distant conductive areas Is shifted to the long axis Protruding from The source of direct current passes through the center of the melting vessel. 8. The arc furnace in Article 6 is characterized by the positive effect of the current. Transmitted by such power Through the wires to the connecting plate of the conductive area near Is less than the sum of the current Fire passes through a distant conductive area. 9. The arc furnace in clause 8 has a characteristic that each power cord and its corresponding wires. Was sized in such a way that it would correspond to a set of The incompatibility with such a large number of plates 1 0. Method for operating arc arc furnaces use direct current for melting of raw materials by electric spark. The electric spark furnace, provided with a melting vessel with a conductive bottom container, a top container and a refractory lid, formed firmly in the melting vessel. The negative electrode, which can be switched vertically, is placed at the center of the container lid. And sealed With the electrode support arm, anode electrode operation Act up with the sheet A large number of anodes in the lower end of the aforementioned container A large number of connecting plates An adjustable mount is installed at the bottom of the bottom container, each connecting plate defining the conductive area of the anode electrode operation. And there are electric wires Forced power, large currents Which is connected by a wire to the negative electrode With the conductive pads of the operation to have such anode electrode For relaying Current through the wires to the source of the corresponding splice plate. A way to do that Of the arc furnace It is characterized by the following steps: a) Monitoring of the current transmitted on each wire. From power lines to Corresponding conductive pads b) Monitoring of spark deviations between electrodes Negative electrode to raw materials and c) control and optimization The currents that are transmitted in each wire To the said sheet To achieve minimal deviation of the electric spark to the refractory lining 1 1. Method of use of arc arc furnaces in accordance with Clause 10, including additional steps of connecting positions on the lower vessels. After the inspection Spark deflection And before adjusting the current in the power cord to suit