以硫铁矿烧渣为原料制备铁黄  

Preparation of Ferrite Yellow from Pyrite Cinder

作　　者：李端林[1] 陈吉春[1] 薛爽[1] 

机构地区：[1]武汉理工大学资源与环境工程学院,湖北武汉430070

出　　处：《化工环保》2006年第2期136-139,共4页Environmental Protection of Chemical Industry

摘　　要：用硫铁矿烧渣精制的FeSO4和NaOH为原料制备铁黄晶种，在二次氧化过程中用滴加氨水的方法制备铁黄颜料，考察了影响晶种质量及铁黄质量的诸多因素。实验得出的铁黄晶种制备的工艺条件为：温度25℃，碱比0．3，Fe^2＋初始浓度1mol／L，通氧速率3．0L／（L·min）；二次氧化的工艺条件为：溶液pH3～4，晶种比25％，通氧速率4．0L／（L·min）。经检测，用该法制备得到的铁黄产品质量达到中华人民共和国化工行业标准HG／T2249-91《氧化铁黄颜料》一级品标准。FeSO4 prepared from pyrite cinder and NaOH were used as raw materials to prepare the a- FeOOH seed,and the ferrite yellow pigment was prepared by dripping NH3 · H2O in the secondary oxidation process. The factors affecting the quality of a-FeOOH seed and ferrite yellow product were investigated. The optimum conditions for ,v-FeOOH seed preparation are as follows ： temperature 25℃, alkali ratio 0.3, initial concentration of Fe^2＋ 1 mol/L and oxygen flow rate 3.0 L/（ L ~·min） and these for secondary oxidation ： solution pH 3- 4, seed ratio 25 % and oxygen flow rate 4.0 L/（ L · min）. The quality of ferrite yellow product prepared by this method can meet the first grade standard of HG/ T 2249- 91.

关 键 词：硫铁矿烧渣 滴加法 制备 铁黄 综合利用 

分 类 号：X705[环境科学与工程—环境工程]