摘要
大量高铁铝土矿因氧化铁含量高、矿物嵌布关系复杂而处于待开发状态。为确定四川某高铁铝土矿的高效开发利用方案，对还原焙烧-弱磁选提铁-铝溶出的铝铁高效分离回收工艺中主要影响因素——焙烧制度、焙烧产物磨矿细度及弱磁选磁场强度进行了单因素条件试验。结果表明，在还原焙烧试样粒度为0．18～0mm、配碳系数为2．0、焙烧温度为1350℃、焙烧时间为20min、焙烧产物磨矿细度为－0．074mm占91％、弱磁选磁场强度为60kA／m情况下，可取得铁品位为89．83％、铁回收率为84．08％的金属铁粉，A12Ｏ３浸出率为69．35％，较好地实现了铝、铁分离。
Due to high iron oxide content and complex mineral disseminated conditions, a large number of high-Fe baux- ite is to be developed. To determine the high efficient development and utilization of a high-Fe bauxite ore in Sichuan, main factors in the high efficient aluminum and iron separation process of reduction roasting-iron enrichment by low intensity magnet- ic separation-aluminum dissolution were tested, including roasting system, grinding fineness of calcined product and field inten- sity of low intensity magnetic separation as single variable factor. The results showed that under conditions of the particle size of reduction roasting sample O. 18 - 0 ram, a carbon coefficient of 2.0, calcined at 1 350 ℃, roasting for 20 min, grinding fine- ness of calcined product 91% - O. 074 mm, and magnetic field strength of low-intensity magnetic separation 60 kA/m, the metal iron powder with Fe grade of 89.83% ,Fe recovery of 84.08% was obtained,and the leaching rate of A12O3 reached 69.35% ,which preferably achieved the separation of aluminum and iron.
出处
《金属矿山》
CAS
北大核心
2014年第9期48-51,共4页
Metal Mine
关键词
高铁铝土矿
还原焙烧制度
金属化率
金属铁粉
浸出率
High-Fe bauxite, Reduction sintering system, Metallization rate, Metal iron powder, Leaching rate
