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from leach solution of scheelite concentrates 表7 白钨矿浸出液中钨的反萃效果 Table 7 Stripping efficiency of tungsten from leach solution of scheelite concentrates 在有机相组成20%N1923+磺化煤油,相比1:1.5,室温23 ℃,接触时间... hydrometallurgical production methods for tungsten[J]. JOM, 2006, 58: 45-49. [4] MARTIN J P. Kinetics of soda ash leaching of low-grade scheelite concentrates[J]. Hydrometallurgy, 1996, 42: 221-236. [5] LI Hong......
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；羟肟酸；浮选机理 中图分类号:TD923 文献标志码:A Flotation mechanism of scheelite with hydroxamic acid GAO Yu-de, QIU Xian-yang, HAN Zhao-yuan (Research Institute of Resources Comprehensive Utilization, Guangzhou Research Institute of Non-ferrous Metals, Guangzhou 510651, China) Abstract: The flotation mechanism with hydroxamic acid of scheelite were researched by floatation experiment......
学；分解 中图分类号:TF111.31 文献标志码:A Thermodynamic study on decomposition of scheelite with sodium silicate CAO Cai-fang1, ZHAO Zhong-wei1, 2, LIU Xu-heng1, 3, WANG... of decomposing scheelite with sodium silicate, thermodynamics of Ca-Si-W-H2O system was studied and a series of equilibrium diagrams were obtained. Theoretical analysis shows that scheelite can......
白钨矿与方解石的化学成分 Table 1 Chemical composition of scheelite and calcite 1.2 浮选试验 纯矿物浮选试验在40 mL的XFG型挂槽式浮选机(转速为1900 r/min)中进行,每次取2.0 g矿样,加入30 mL去离子水,调浆1 min后,用HCl或NaOH调节pH值,搅拌2 min并记录pH值,然... of scheelite with different pH values 油酸钠用量对白钨矿回收率的影响如图2所示.由图2可知,随着油酸钠用量增加,白钨矿回收率逐渐增加；当油酸钠用量小于90 mg/L时,在相同的油酸钠用量下,方解石与六偏磷酸钠共同添加时白钨矿回收率下降最明显,方解石单独添加时白钨矿回收率降低程度次之,六偏磷酸钠单独添加时下降最不明显,且基本不影响白钨矿回收率. 图2 ......
0.038~0.074 mm粒级矿样经去离子水清洗,干燥保存备用.3种矿物的XRD谱见图1,2和3.试验所用试剂油酸钠,盐酸,氢氧化钠,腐殖酸钠,单宁,聚丙烯酰胺,聚丙烯酸钠,CMC均为分析纯. 图1 白钨矿XRD谱 Fig. 1 XRD pattern of scheelite 图2 萤石XRD谱 Fig. 2 XRD pattern...~10.5时,CMC能有效实现白钨矿和方解石,萤石的浮选分离. 图4 添加CMC时pH值对矿物浮选的影响 Fig. 4 Recovery of scheelite, fluorite and calcite as function of pH value in presence of CMC 在pH=8.5~9.5,油酸钠浓度为100 mg/L时,研究了CMC浓度与矿物浮选回收......
要依靠静电力与白钨矿表面作用. 关键词:二辛基二甲基溴化铵；白钨矿；方解石；常温浮选；分离 中图分类号:TD95; TD923 文献标志码:A Flotation separation of scheelite and calcite at ambient temperature using new quaternary ammonium... of scheelite and calcite, the flotation separation of artificial mixed minerals with scheelite and calcite and the flotation of ores from Shizhuyuan by using dioctyl dimethyl ammonium bromide (DDAB) were......
Trans. Nonferrous Met. Soc. China 31(2021) 2493-2500 A novel green depressant for flotation separation of scheelite from calcite Chen CHEN1,2, Wei SUN1, Hai-ling ZHU1, Run-qin LIU1 1. School...; accepted 8 April 2021 Abstract: Polyaspartic acid (PASP) was used as a novel environmental-friendly depressant, and its inhibition effect on flotation performance of scheelite and calcite using sodium......
成 Table 1 Chemical composition of scheelite and calcite 1.2 浮选试验 对于单矿物浮选试验,用高精度天平称取2g白钨矿或者方解石样品,放入单矿物浮选机的浮选槽中,加入40 mL蒸馏水搅拌调浆.依次加入pH调整剂,抑制剂,捕收剂和起泡剂并分别搅拌3 min使药剂充分作用.用pH计测定矿浆pH值后插入挡板开始充气浮选...而方解石的浮选回收率降低,白钨矿和方解石的浮选分离难度下降. 图1 组合捕收剂中油酸钠和聚醚P123的摩尔比对白钨矿和方解石浮选的影响 Fig. 1 Effect of mole ratio of sodium oleate to P123 on flotation of scheelite and calcite (c(collector)=1×10-4 mol/L......
