从低品位铜钼矿体中回收铜钼的浮选试验研究

文章通过对福建、内蒙古、河南某地三个低品位铜钼金属矿体的铜钼浮选试验研究,讨论了低品位铜钼金属矿体的铜钼浮选可选性。？昆合浮选较优先浮选指标好,从含Cu0．03％～O．44％,含MoO．039％～0．081％的给矿中得到含Mo34．82％～47．46％,含cu4．65％～18．42％,回收率分别为62．50％～81．47％和58．89％-82．03％的钼精矿和铜精矿。     

某铜钼矿石浮选工艺试验研究

介绍了某铜钼矿石选别的药剂条件及工艺流程,着重论述了分散剂及组合捕收剂在铜钼混合浮选和分离浮选中的作用.     

某钼铜硫多金属矿钼铜混合浮选分离研究

对某铜钼硫多金属矿进行了选矿试验。采用钼铜混合浮选再分离工艺流程,在原矿含 Mo 0．17％、Cu 0．137％、S 5．36％、Pb 0．067％的条件下,获得了含钼49．26％、钼回收率82．66％的钼精矿及含铜15．45％、铜回收率53．52％的铜精矿。实现了钼铜硫矿物与脉石及钼铜硫矿物之间的有效分离,获得了良好的技术指标。     

铜钼混合精矿分离浮选试验研究

对国内某大型铜钼矿浮选厂的铜钼混合精矿进行了分离浮选试验研究.在分离前对精矿进行强化脱药,采用组合抑制剂YF851和YF212进行分段抑制,可显著改善铜钼分离效果,获得了较好试验指标:钼精矿品位为49.91%、含铜0.69%,钼回收率为84.45%;铜精矿品位为32.90%,含钼0.07%,铜回收率为99.98%.     

铜、钼浮选分离探索试验研究

对某大型铜钼矿的铜钼混合精矿进行了铜、钼分离浮选试验研究。试验结果表明：硫化钠加高锰酸钾能够有效地抑制铜矿物,钼精矿中的铜的含量有较大幅度的下降,并且能够在不添加巯基乙酸钠的条件下使铜、钼得到很好的分离,并取得了铜、钼品位分别为27.06%、45.28%和作业回收率分别为99.90%和95.23%的较好指标。     

铜、钼分离浮选试验研究

为了充分回收利用钼资源,对某选矿厂产出的含钼铜精矿进行了铜、钼分离浮选试验研究。通过对含钼铜精矿进行阶段磨矿、抑制铜等金属硫化矿、有效抑制脉石矿物,获得了钼精矿品位47.35%、含铜0.62%、钼回收率86.45%的较好闭路试验指标。     

德兴铜矿铜钼分离研究现状及研究方向

由于兴铜矿铜混精钼品位波动大，硫化钠用量增加和上涨等原因，１９８６年以后，铜钼分离生产时开时停。１９９１年起，许多高等院校、研究院所在此开设了一系列研究工作，取得了一定成果，简要介绍脉动高梯度磁选、充填式浮柱浮选、充氮浮选先进试验情况，分析了讨论了试验结果，提出了德兴铜矿铜钼分离研究的方向。     

某铜钼矿铜钼分离工艺试验研究

介绍了某铜钼矿石铜钼分离的药剂试验成果，在硫化钠用量15．5kg／t、水玻璃用量0．55kg／t，闭路试验指标：当铜钼混合精矿中含铜17．85％，钼0．251％时，获得的钼精矿品位46．77％，钼回收率85．72％，其中含铜0．205％，铜精矿品位17．93％，铜回收率99．995％。     

氧化铜矿浮选研究进展

详细评述了氧化铜矿的浮选方法与工艺及浮选药剂研究进展,指出强化硫化过程、硫化质量和寻找具有高度选择性的捕收剂是其重要的研究方向     

铜旋浮冶炼电收尘烟灰脱砷工艺研究

阳谷祥光铜业有限公司采用旋浮熔炼工艺冶炼铜精矿,随着入炉铜精矿含砷的提高,电收尘烟灰中的含砷量也随之提高,砷在系统中不断循环,使阳极板中砷含量超标,影响阴极铜的质量.公司利用前期试验期间的保存样品进行了砷提炼试验,该提炼工艺包含水浸和酸浸两个过程.水浸试验表明铜烟尘经过水浸,烟灰中67.5％的铜和69.9％的锌被优先脱...     

Effect of heating pretreatment on ballability of hematite concentrate with flotation process

The experiments were carried out to investigate the mechanism of lower cracking temperature of green pellet made by iron concentrate with flotation process. The results of Fourier transform infrared spectroscopy??FTIR?? analysis indicate that the iron concentrate of green pellet with lowest cracking temperature has the strongest sodium oleate transmittance of infrared spectrum. When the iron concentrate is heated to 70, 150 and 250??, respectively, the sodium oleate transmittance weakens and the cracking temperature of green pellet increases observably. The sodium oleate that attached to the surface of iron concentrate make the iron concentrate more hydrophobic, which leads to faster vaporizing speed of pellets moisture and lower cracking temperature of green pellet. The pretreatment of heating iron concentrate above 150?? can effectively decrease the residual sodium oleate on the surface of iron concentrate and improve the cracking temperature of green pellet.     

某复杂铜硫矿石优先浮选工艺试验研究

对某铜硫硫化矿石进行详细的工艺矿物学研究,针对该矿石特点,采用“优先选铜—活化选硫”原则流程,试验对比了以丁基黄药和酯-105为铜捕收剂的选别效果,结果表明:与前者相比,以酯-105作铜捕收剂,可减少选铜阶段的石灰用量,且在选硫阶段可用新型活化剂代替硫酸,从而实现低碱优先选铜,新型活化剂活化选硫,实验室闭路试验结果表明,该工艺可获得铜品位为18.93 %,铜回收率为94.31 %的铜精矿;硫品位为33.46 %,硫回收率为55.39 %的硫精矿.      

利用氮气提高铜钼分离指标的小型试验研究

本文主要是利用氮气来提高铜钼分离浮选指标,达到降本增效,优化五率的目的。小型试验研究表明氮气与空气在同等用量下,前者分离浮选指标优于后者。通过调整氮气充气量以及铜抑制剂硫氢化钠药剂用量,能有效降低铜钼分离时铜抑制剂的用量,最高能节约60%,该项技术能有效降低选钼成本,提高企业经济效益。     

铜熔炼渣和吹炼渣混合浮选的生产实践

东营方圆有色金属有限公司采用浮选工艺对铜熔炼渣和吹炼渣进行混合选矿,以回收炉渣中的铜等有价金属。实际生产中采用三段破碎+两段球磨的浮选工艺,通过合理控制破碎粒度、磨矿粒度以及加药量等工艺参数,有效地提高了铜等金属的回收率。     

组合抑制剂在铜铅分离浮选中应用的试验研究

针对某铜铅锌多金属硫化矿的特征，通过多种方案的比较，我们采用铜铅优先浮选，水玻璃＋亚硫酸纳＋羧甲基纤维素组合抑制剂进行铜铅分离的试验方案，成功实现了铜铅的有效分离，获得了较佳的选矿指标．     

The solvent extraction separation of bismuth and molybdenum from a low grade bismuth glance flotation concentrate

The main purpose of this study was to characterize and to extract bismuth and molybdenum from a low grade bismuth glance concentrate. Selective leaching of bismuth could be obtained at a temperature range 60 to 85 °C for a leaching duration of 2 h with hydrochloric acid concentration of 150 gpl, lignin calcium concentration of 0.02 gpl and using a solid–liquid ratio 1/4 g/cc. Treatment of leach liquor for the solvent extraction of bismuth with N235 showed that 8.0 × 10^− 2 M N235 in kerosene, a 3 min period of equilibration and a pH 0.2 were sufficient for the extraction of Bi(III). This bismuth-loaded organic phase was almost completely stripped using 0.5 M EDTA solution. Treatment of leached residue was dealt with by roasting in the presence of slaked lime, and followed by hydrometallurgical treatment of the roasted products. In the lime roasting process, molybdenum recoveries of around 99% were achieved when an excess of 50% lime over stoichiometric requirement was roasted at 700 °C for 2 h and the calcine was leached with 4 M HCl, at 70–80 °C for 2 h. Molybdenum then was effectively extracted from the leached residual solution with N235. An optimum pH of 0.5 was determined for molybdenum extraction. From loaded solvent, this metal was easily stripped with ammonia solutions to give a pregnant solution suitable for final recovery of metal by salt precipitation. Under the optimized conditions, the ultimate recovery rate of bismuth and molybdenum was more than 99% and 98% respectively.