据不完全统计:今年上半年,全国各地群众用土办法办起来的炼铁炉有11,000多座。下面,我们来介绍一下土法炼铁的方法。原料常用的铁矿石有赤铁矿、磁铁矿、菱铁矿、褐铁矿、铁砂。赤铁矿,磁铁矿、褐铁矿都可以直接放到炉里炼铁,菱铁矿要先经过锻烧(把它和燃料一同放在土窑里烧,来赶走矿石里的二氧化碳气, According to incomplete statistics, in the first half of this year, more than 11,000 iron smelters were built by the masses in all parts of the country. Here, let us introduce the method of indigenous ironmaking. Raw materials commonly used iron ore hematite, magnetite, siderite, limonite, iron sand. Hematite, magnetite, limonite can be directly put into the furnace ironmaking, siderite to be calcined (put it with the fuel in the kiln to burn, to drive away the carbon dioxide gas in the ore ,