某低品位长石矿无氟无酸选矿工艺试验研究  

Non-fluoride and Non-acid Flotation Process of a Low-grade Feldspar Ore

作　　者：徐龙华[1,2] 董发勤[1] 王振[1] 王进明[1] 肖军辉[1] 刘若华[2] 

机构地区：[1]西南科技大学固体废物处理与资源化教育部重点实验室,四川绵阳621010 [2]中南大学资源加工与生物工程学院,湖南长沙410083

出　　处：《矿冶工程》2015年第4期27-30,共4页Mining and Metallurgical Engineering

基　　金：国家自然科学基金(51304162);西南科技大学大学生创新基金项目(CX14-036)

摘　　要：对四川某地低品位长石矿进行了无氟无酸选矿提纯试验研究,确定了"棒磨-磁选-浮选"工艺流程。在磨矿细度为-0.074mm粒级占48.79%时,通过弱磁选-SLon立环高梯度强磁选,获得了Fe2O3含量为0.11%、长石回收率为83.83%的磁选尾矿,再在十二胺为捕收剂、油酸钠为长石活化剂、六偏磷酸钠为石英抑制剂、不加p H值调整剂的条件下进行一粗一精二扫浮选,最终获得Fe2O3含量0.19%、Si O2含量80.12%、K2O+Na2O含量高于13%的长石精矿,其综合回收率为55.03%。To beneficiate a low-grade feldspar ore from Sichuan Province, a rod milling-magnetic separation-flotation flowsheet was determined by experimental tests without using fluoride and acid. At a grinding fineness of -0.074 mm 48.79%, the feldspar ore was subjected to a low-intensity magnetic separation and a SLon high gradient magnetic separation. The tailings with Fe2O3 grade of 0. 11% and feldspar recovery of 83.83% was transferred to a flotation process including one stage of roughing, one stage of cleaning and two stages of scavenging. Without adding pH regulator, the pulp was processed with dodecylamine as collector, sodium oleate as activator and sodium hexametaphosphate as modifier, yielding a feldspar concentrate with the content of Fe2O3, SiO2 and K2O＋Na2o as 0. 19%, 80.12% and 〉13%, respectively, with a comprehensive recovery at 55.03%.

关 键 词：浮选 长石 无氟无酸 十二胺 油酸钠 六偏磷酸钠 

分 类 号：TD97[矿业工程—选矿]