wanhaorefractory

  Electric furnace oxidation period The oxidation period of electric furnace is the main process of oxidation smelting, which can remove phosphorus, gas and inclusions in steel. When the scrap steel material is completely melted and reaches the oxidation temperature, more than 70% to 80% of phosphorus is removed and enters the oxidation period. In order to ensure the progress of the metallurgical reaction, the oxidation starting temperature is 50-80°C higher than the melting point of the molten steel. The main tasks during the oxidation period of the electric furnace: Continue dephosphorization to the requirement-dephosphorization; Decarburization to the lower limit of specification-decarburization; Get rid of gas, get rid of inclusions-go two; Increase the temperature of molten steel-heating up. Electric furnace reduction period In the traditional electric furnace smelting process, the existence of the reduction period shows the characteristics of elect...

  Electric furnace steelmaking uses electric energy as the main heat source and uses three-phase alternating current or direct current. An electric arc is generated directly between the charge and the electrode, and the charge is melted at a high temperature by the electric arc, and then an oxidizer, slag-forming agent, ferroalloy, etc. are added to remove inclusions. The chemical composition and temperature of the molten steel are adjusted to the specified values and then injected into the ladle. Since the 1980s, electric furnaces have developed in the direction of large-scale, ultra-high power, direct current, continuity and automation, and the world's electric furnace steelmaking production technology has developed more rapidly. Electric furnace melting period The melting period of the traditional smelting process accounts for 50% to 70% of the entire smelting time, and electricity consumption accounts for 70% to 80%. Therefore, the length of the melting period...

The quality of bauxite will affect the control of production technology conditions, equipment capacity, energy consumption and product quality. The evaluation indexes of bauxite quality mainly include aluminum content, aluminum to silicon ratio of bauxite and type of bauxite. 1.Alumina content. The alumina content in bauxite is usually between 45% and 75%. The higher the content of alumina, the better the product quality; 2.The ratio of aluminum to silicon of bauxite. The higher the ratio of aluminum to silicon, the better the quality of bauxite. At present, industrial production of alumina requires bauxite with an aluminum to silicon ratio of not less than 3.0-3.5. 3. Type of bauxite. Different types of bauxite, the technical conditions adopted are also different. Wanhao is a manufacturer who is specialized in designing various kinds of furnace and making refractory products for electric furnace, ladle, tundish, blast furnace, AOD furnace, IF furnace, etc. Article Sourc...