TH22420C3 - Method for producing molten steel in double melting furnace - Google Patents

Abstract

DC60 (08/06/43) This invention deals with methods for operating a Rotary Hart furnace in conjunction with a fire furnace. Fa to produce iron products of high purity. It contains a certain amount of silicon and manganese and low content of sulfur and phosphorus. Methods include the production of high-purity iron products and products with Carbon From extruded materials containing iron oxides and carbon That includes the process of having a stove For reducing extruded materials directly containing iron oxides and carbon. Extruding of extruded materials containing iron oxide And carbon pre-emptied in a furnace with a rotating furnace skin Production is a ferrous metal interface with Carbon in an electric furnace used to receive ferrous metal interfaces with carbon. From the re Deus Advance It is fed directly and continuously into the interior of the incandescent furnace, where the carbon-containing ferrous metal is heated in the electric furnace under high temperatures of approximately 1300 ° C to approximately 1700 ° C. The penetration of air or other unwanted gases such as oxygen in the melting process is minimal while maintaining a high temperature. And producing Extremely pure liquid iron leaves the electric furnace This method provides products with a high iron content with carbon, silicon and manganese within a certain percentage range. With low sulfur and phosphorus content, significant reduction of silicon oxide and reducing manganese oxide in products, products with the required high iron content are manufactured for use in the steel making industry. This invention is about a method for operating a Rotary Hart furnace in combination with a fire furnace. Fa to produce iron products of high purity. It contains a certain amount of silicon and manganese and low content of sulfur and phosphorus. Methods include the production of high-purity iron products and products with Carbon From extruded materials containing iron oxides and carbon That includes the process of having a stove For the direct reduction of materials containing iron oxides and carbon. Extruding of extruded materials containing iron oxide And carbon pre-emptied in a furnace with a rotating furnace skin Production is a ferrous metal interface with Carbon in an electric furnace used to receive ferrous metal interfaces with carbon. From the re Deus Advance It is fed directly and continuously into the inner center of the incandescent furnace, where the carbon-containing iron metal is heated in the electric furnace under high temperatures of approximately 1300 ํ to approximately 1700 ํ. The penetration of air or other unwanted gases such as oxygen in the melting process is minimal while maintaining a high temperature. And producing Extremely pure liquid iron leaves the electric furnace This method provides products with a high iron content with carbon, silicon and manganese within a certain percentage range. With low sulfur and phosphorus content, significant reduction of silicon oxide and reducing manganese oxide in products, products with the required high iron content are manufactured for use in the steel making industry.

Claims (9)

1.Method for producing high-purity molten steel products from Materials with iron and carbon in it High-Purity Molten Steel Products It consists of 1.0% to 5.0% carbon. The method consists of steps of a) making a compressive material containing carbon-containing material. Silicon oxide Manganese oxides and sulphur b) loading of carbonized and extruded materials from the above process into a rotary kiln; c) pre-extruded materials in a rotary kiln. By heating the extruded material to form the material Extraction of pre-rolled high-carbon hot iron metallurgy d) Removing pre-rolled high-carbon iron metallurgical materials from a conventional furnace. Rotating at 700 ํ up to 1100 ํ). Pressing of high-carbon hot iron metallurgy directly from the furnace. F) heating of the pre-rolled high carbon steel extruded material and Melted in an electric furnace at 1300cd to 1700cd to make steel. High-carbon molten steel g) Prevention of high-carbon molten steel by reducing its penetration. H) Carbonization of high-carbon molten iron to form high-carbon molten iron metal; i) Purification of high-carbon molten iron metal. By reducing Silicon oxide is silicon, reducing manganese oxide to manganese. And metal de-sulfurization Molten steel with high carbon to produce liquid steel products with high carbon J) High-purity discharging of molten steel products from an electric furnace and k) maintaining a minimum high-purity high-carbon liquid iron content of 1 to 4 times the product. High-purity molten steel that is periodically drilled from the furnace. 2. Method of claim No. 1 where the pre-reducing procedure is performed in the furnace. Rotary type with rotating stove surface And the compressed material is placed on the rotating surface of the furnace. 3. The second claim method also consists of multiple layers of evenly packed compressed material. On the rotating surface of the stove 4. Methods of claim No. 1, where the heating and melting procedures are performed with The electrode is a pre-treated material chosen from the carbon and graphite group. 5. The method of claim 1 also consists of maintaining the foaming residue during The process of heating and melting 6. The method of claim 1 also consists of maintaining a reducing environment. Inside the electric furnace 7. The method of claim 6 also consists of inert gas expulsion within the electric furnace. 8. Method of claim No. 7, where inert gas expulsion inside an electric furnace is to drive. Scavenge with nitrogen gas 9. The method of claim 1 also consists of maintaining the temperature to 1450 ํ to 1700 ํ inside the furnace 1. 0. The Clause 9 method also consists of maintaining a temperature of 1450 ํ to 1550 ํ inside an electric furnace so that silicon oxide is reduced to silicon and manganese oxide as a Manganese in the best high-carbon molten iron metal. 1. The method of claim No. 9 also consists of maintaining the temperature to 1550 ํ to 1630 ํ inside the electric furnace to increase the sludge. 2. The Clause 9 method also consists of maintaining the temperature at 1550 ํ to 1630 ํ in the electric furnace to increase the removal of sulfur from the high-carbon liquid ferrous metal. 3. Method of claim No. 1 in which extruded material is made with a reducing agent in it, such reducing agent is selected from a group containing rock powder. Fine rock transfer powder, graphite, coke ash, petroleum and other carbon compounds. 4. Method of claim No. 1 in which iron-containing materials and carbon-based materials are made from materials that Choose from a group consisting of disposable materials that contain iron. Sludge from a steel mill, dust flakes, contains iron, iron oxides, carbon compounds. Siliconoxide, Taconite Sand, Manganese Oxide Compound, Magnesium Oxide Compound Aluminum oxide compound and binder 1 5. Method of claim No. 1, where the liquid iron products are pure carbon It has a sulfur content ranging from 0.005% to 0.016% 1. 6. Method of claim No. 1 where the liquid iron products with high purity carbon Contains at least 95% reducing iron 1 7. Method of claim No. 1, which the process of continuous insertion Also contains Add carbon-containing compounds to the electric furnace 1 8. Method of claim No. 1, which the process of continuous insertion Also contains Add the residue conditioning material into the electric furnace 1 9. The claim method 1 also consists of adding carbon-containing compounds to the High-purity molten steel products of high purity when discharged from the furnace. 0. The method of claim No. 1 also consists of maintaining low-density pulp in an electric furnace.