Iron refining: carbon monoxide and iron oxide generate iron and carbon dioxide at high temperatures. At high temperaturesIron oreIt is used to restore raw iron. The main raw materials for iron refining are iron ore, coke, limestone and air gas. There are iron ores and magnets。
It's the iron refining industryChemical equationsIt's feo+3co = 2fe+3co (high temperature) (reducing reaction)。
Rationale: carbon monoxide and iron oxide generate iron and carbon dioxide at high temperatures. At high temperatures, iron ore is reduced to raw iron with a reduction agent. The main raw materials for iron refining are iron ore, coke, limestone and air gas. There are iron ores and magnets。
Iron ore is referred to as grade. Smelting is preceded by the extraction of minerals, the removal of impurities and the upgrading of iron ore grade, which is then broken, grinded and cremated before they can be deliveredThe furnaceSmelting. The role of coke is to provide heat and produce carbon monoxide as a reduction agent. The limestone is used to create slags and remove pulses so that the iron smelted can be separated from the impurities. The main equipment for iron refining is the furnace。
When smelting, iron ore, coke and limestone are added from the top feed mouth, and thermal gas is blown up from the bottom into the furnace. At high temperatures, the reaction is fully exposed to iron. Refining is the loading of fuels such as iron ore, coke, carbon monoxide, hydrogen gas, and smelting agents (in theory, iron mixed with more metal-active ore at high temperatures) into high furnaces for smelting and removal of impurities for metal (coated iron)。
Crafts of the chemical industry at the lower secondary level: at high temperatures, the reduction agent (co) from iron ore is recovered using coke and oxygen reactions。
Raw materials: iron ore: choice of ore conditions。
It is common for iron ore to consist of magnet ore (mainly fe3o4) and iron ore (mainly fe2o3)。
The role of coke: 1. C+o2 = high temperature = co2co2 + c = high temperature = 2 co。
Limestone: activate removal of sio2, caco3 = high temperature = cao+co2↑; cao+sio2 = high temperature = casio3
Major equipment: furnaces. Chemical reaction at smelting: c+o2=ignition=co2. Co2+c = = high temperature = = 2co
3co+fe2o3 = high temperature = 2fe+3 co2; caco3 = high temperature = cao+co2↑; cao+sio2 = high temperature = casio3。
Note: the main function of limestone is to convert silicon dioxide from ore to mineral sludge。
Steel refining equipment: transformer, electric, flat。
Rationale: at high temperatures, excess carbon and other impurities contained in raw iron are removed from oxygen or iron oxide to gas and slag. C+o2=ignition=co2
