Blast furnace is the main facility of puddling, it has yield big, productivity is mixed high the good point with low cost.
Process of blast furnace smelt is including complex physico-chemical change. After puddling raw material is joined from blast furnace roof, those who pass oxide of warm-up, iron is reductive the combustion that issues trickle to move detached, coke with fused, iron and broken bits and generation are gas wait for a process and obtain cast iron. Its smelt process has continuously below high temperature.
Blast furnace body of heater separates the position such as the larynx that it is furnace, shaft, belly, bosh, crucible and hearth. Among them furnace larynx, belly and crucible are hollow cylinder, shaft and bosh part to go up to issue small truncat greatly to go up small to be mixed greatly style of hollow and conic stage, hearth is cylinder.
Blast furnace the working temperature of each place: Area of hearth, crucible is area of bosh of 1450~1800 ℃ ; , belly to be upside of shaft of 1400~1600 ℃ ; to be 600~800 ℃ .
Hot-blast stove is one of main and accessory equipment of blast furnace. Its utility is to use blast furnace gas flaming quantity of heat, the heat of grid of brick of have the aid of exchanges action, offer the sirocco of high temperature for blast furnace. Deploy 3~4 commonly because of every blast furnace hot-blast stove, so that combustion heats with send wind to undertake alternately. Hot-blast stove submits erect cylinder form commonly, body of heater by regenerator and firebox two parts are formed, also have increase those who mix air compartment.
Hot-blast stove of common internal combustion engine ℃ of 980~1100 of wind Wen Wei, improve model hot-blast stove of internal combustion engine and top light type hot-blast stove ℃ of 1200~1250 of wind Wen Wei, type hot-blast stove is lighted outside ℃ of 1300~1350 of wind Wen Keda.
The system of each place build by laying bricks or stones of hot-blast stove stands respectively: The gas belt of; of high temperature action when gas combustion enters dirt those who eat gas of action; combustion erode action and the thermal stress action that the temperature in heating up commutative process changes quickly, accordingly, the fireproof data that each place place uses hot-blast stove, should make according to the damaged mechanism of its lining get corresponding option.
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