山东某硫铁矿烧渣硫酸浸出液制备铁红工艺研究

摘要

Iron oxide red can be prepared from the sulfuric acid solution of a pyrite cinder from Shandong province.Ammonium hydroxide was used to regulate the pH value of the sulfuric acid solution of the py-rite cinder,and together with ammonium bicarbonate co-precipitate iron ions.The sediment were calcined to prepare iron red.The results showed the deposit rate of iron ion in the sulfuric acid solution of a pyrite cinder was 97.18%,when the dosage of ammonium hydroxide was 10 mL,and the dosage of ammonium bicarbonate was 2 g.Iron oxide red(98.76%Fe2O3)was gained through 1.0 h at the calcination tem-perature of 800 ℃.The grade of the iron oxide red is A on the basis of the iron oxide pigment standard (GB T 1863—2008),the pigments index number is paratonere 101(77491).%为了以山东某硫铁矿烧渣硫酸浸出液制备铁红,采用氨水调节溶液pH值,与碳酸氢铵协同沉淀铁离子,沉淀物焙烧制备铁红.结果表明,浓氨水用量为10 mL,碳酸氢铵用量为2 g时,铁离子沉淀率达到97.18%;沉淀物焙烧时间为1.0 h,焙烧温度为800 ℃,获得铁红Fe2O3含量约98.76%,根据氧化铁颜料标准(GB T 1863—2008),为A级铁红,颜料索引号为颜料红101(77491).