Luoyang Zhongtai Industrial Co., Ltd.
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Converter Made From Steel Plate For Metallurgy Machine Basic Oxygen Furnace
1. Introduction to converter products for metallurgy machine:
A metallurgical furnace with a rotating body used for blowing steel or matte. Converter body is made of steel plate, cylindrical, lined with refractory materials, blowing by chemical reaction heat heating, without external heat source, is the most important steelmaking equipment, can also be used for copper, nickel smelting. The bof is divided into alkaline bof (lined with magnesia or dolomite) and acid bof (lined with silicon material) according to the properties of refractory material of furnace lining; According to the parts of the gas blowing into the furnace is divided into bottom blowing, top blowing and side blowing converter; According to the gas used in blowing, it is divided into air converter and oxygen converter. Bof steelmaking is mainly made of liquid pig iron.
Converter steel-making is made of molten iron, scrap steel and ferroalloy as the main raw materials. Without external energy, the process of steel-making is completed in converter by the physical heat of molten iron itself and the heat generated by the chemical reaction between the components of molten iron. The converter is divided into acid and alkaline according to the refractory material, according to the parts of the gas blowing into the furnace with top blowing, bottom blowing and side blowing; According to the type of gas for air converter and oxygen converter. The bof is the most commonly used steel-making equipment because of its fast production speed, large output, high output of single furnace, low cost and less investment. The converter is mainly used for the production of carbon steel, alloy steel and copper and nickel smelting.
2. Main features of converter for metallurgy machine:
By the physical heat of the liquid pig iron in the converter and the heat generated by the chemical reaction between the components of pig iron (such as carbon, manganese, silicon, phosphorus, etc.) and the oxygen sent into the furnace, the metal can reach the composition and temperature required by the steel. The charge is mainly molten iron and slag-making material (such as lime, quartz, fluorite, etc.). In order to adjust the temperature, scrap steel and a small amount of cold pig iron and ore can be added. In the process of bof steelmaking, the carbon in molten iron at high temperature and the oxygen blown in form a mixture of carbon monoxide and a small amount of carbon dioxide, namely bof gas. The amount of converter gas is not balanced in a smelting process, and the composition is also changed. Usually, the converter gas recovered from several smelting processes is input to the gas storage cabinet after cooling and dust removal, and then transmitted to the user after mixing.
3. Product parameters of Steel converter, copper converter and converter under 300T for metallurgy machine
Main technical and economic indicators Take 150-300T converter as an example, the main technical and economic indicators are as follows:
| Smelting cycle | 30min |
| Among them: oxygen blowing time | 16~20min |
| Oxygen consumption | 48~58m3/t |
| Iron and steel consumption | 1060~1150kg/t |
| Scrap than | 15%~30% |
| Limestone consumption (including dolomite) | 30-70kg/t |
| Fluorite consumption | 0.0~3.0kg/t |
| Iron ore consumption | 30~50kg/t |
| Furnace lining refractory consumption | 3~7kg/t |
| Power consumption | 9~12kw·h/t |
| Annual output (nominal tonnage) | 10000~15000t |
