High carbon ferromanganese manufacturers add flux durin […]
High carbon ferromanganese manufacturers add flux during smelting mainly because its addition can play the following roles:
1. Make slag from harmful impurities.
2. Control the melting temperature of slag. Mineral coal gangue and other silicon, the melting point of silicon is 1983 k. If alkaline flux lime and iron ore are added, the melting point of calcium iron silicate and calcium iron silicate generated by silicon dioxide is generally about 1373 k. The basic flux and slag temperature range from 1983 k to 1373 k, so you can melt at low temperatures.
3. Control the viscosity and density of the high carbon manganese iron slag side to effectively separate from the metal, thereby reducing the loss of metal in the slag and improving the metal recovery rate.
The choice of flux is crucial to the smelting of high-carbon ferromanganese, so how should we choose a solvent? The following Shanghai high carbon ferromanganese suppliers take you to understand.
Generally, high-throughput active ingredients are required, and the content of harmful impurities is as low as possible, such as steelmaking fluxes are low in sulfur and phosphorus.The strength and debris (particle size) can meet the requirements of the smelting process (such as the blast furnace ironmaking flux strength requirements, The large blast furnace is 20 to 75 mm, and it is a small blast furnace block for 10 to 30 mm flash smelting of non-ferrous metal sulfide concentrates, with powdery flux, etc.).
The choice of high-carbon ferromanganese flux is related to the composition of the metal and ore to be refined. CaO-al2o3-sio2 slag is commonly used in iron and steel smelting, and the ash content of iron ore and coke is mostly acid oxides (SiO2, etc.), so alkaline fluxes (limestone or dolomite, etc.) are mainly used. In some cases, acidic fluxes (quartz or lean ore containing acid gangue) are also used to smelt iron ore containing alkaline gangue. Feo-sio2, feo-cao-sio2, feo-al2o3-sio2 are metals commonly used in non-ferrous metal smelting. Non-ferrous metal ores and concentrates are often accompanied by alkaline iron ore, calcite and so on. Therefore, quartz or low-grade quartz placer gold ore is mainly used as a flux. When smelting ore and concentrate containing acid gangue, limestone, iron ore containing basic gangue or non-ferrous metal ore should be added as flux.