New technology for making ferric oxide yellow pigment by using wasteiron scale with medium high carbon instead of low carbon as raw material is stated.
研究了利用中高碳钢废铁屑生产铁黄颜料的工艺，产品质量符合国家标准，铁的转化率达98%以上。
2
Ferrous sulphate is a wide used product of chemical industry, which was produced with wasteiron as raw material in the past so that its cost was higher.
硫酸亚铁是一种用途广泛的化工产品，过去系采用废铁作原料进行生产，但成本较高。
3
The preparation method utilizes industrial sulfuric acid to leach wasteiron residue in oxygen and at normal pressure under reasonable production process and operation conditions.