某钼铋硫混合精矿浮选分离试验

某钼铋硫混合精矿品位较低,粒度较粗,-0.074 mm占64%,钼、铋主要以连生体的形式存在。为获得合格的钼、铋精矿,对试样进行了浮选分离试验。结果表明,试样再磨至-0.074 mm占85%后,采用1粗1精2扫钼铋混浮、1粗2精2扫抑铋浮钼流程处理,最终获得钼品位为53.13%、钼回收率为88.95%、含铋1.46%的钼精矿,铋品位为23.68%、铋回收率为80.06%、含钼3.87%的铋精矿,以及硫品位为31.16%、硫回收率为71.98%、含钼0.32%、含铋1.11%的硫精矿。     

陕西某难选钼矿工艺矿物学研究

对陕西某难选钼矿石进行了工艺矿物学研究。结果表明,矿石中金属矿物组成较简单,脉石矿物种类繁多;钼是矿石中唯一有回收价值的元素,硫化钼占总钼的90.26%,主要以辉钼矿形式存在;辉钼矿主要以充填裂隙的形式存在,颗粒发育不完整、粒度较小、分布不均、解离难度大、分选困难;采用阶段磨选工艺回收钼矿物,既有利于减少磨矿功耗和药剂消耗,又有利于提高分选指标。     

江西某钨重选尾矿钼回收试验

江西某重选钨尾矿含SiO281.14％、含钼0.022％,钼矿物以辉钼矿为主要,且嵌布特征简单,具有较高的综合回收价值.为了兼顾尾矿作为水泥原料外销的现状,以尽量确保尾矿粒度不明显下降为原则,对试样进行了选钼工艺技术条件研究.试验结果表明,采用两段阶段磨矿、1粗1扫4精l精扫、中矿顺序返回浮选流程处理该试样,最终获得了钼品位为46.520％、回收率为50.95％的钼精矿.     

The depression behavior and mechanism of tragacanth gum on chalcopyrite during Cu-Mo flotation separation

In this work, tragacanth gum (TG), a nontoxic and environmental friendly organic polymer, was used to replace the traditional inorganic depressants of chalcopyrite during the flotation separation of copper-molybdenum sulfides. The single mineral flotation and artificial mixed minerals flotation experiments were conducted to investigate the effect of TG on flotation separation behaviour of molybdenite and chalcopyrite. The TG’s adsorption mechanism on molybdenite and chalcopyrite was investigated by X-ray photoelectron spectroscopy (XPS) and Time-of-flight secondary ion mass spectrometry (ToF-SIMS). The flotation experiment results showed that at pH 3–8, TG had a significant selective depressive effect on chalcopyrite flotation and it was enhanced with increasing TG concentration, but hardly affected the molybdenite flotation. XPS analysis showed that TG was chemically adsorbed on both molybdenite and chalcopyrite surfaces and ToF-SIMS results demonstrated that the interaction of TG and chalcopyrite was stronger than that of TG and molybdenite. Further, XPS narrow scanning analysis suggested that TG might chemisorb onto chalcopyrite via chemical bond between the carboxyl groups and Fe sites on bulk chalcopyrite surface as well as the hydrogen bond between the hydroxyl groups and surface Fe oxides/hydroxides. The strong TG adsorption on chalcopyrite hindered the subsequent adsorption of PBX on chalcopyrite surface, thus chalcopyrite was significantly depressed and Cu-Mo flotation separation was achieved.     

辉钼矿湿法浸出新工艺研究

在常压下，研究了二氧化锰对辉钼矿的湿法氧化浸出新工艺。该法较现行的高压氧煮、硝酸法具有节能、投资小、效益高等特点。     

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。     

辉钼矿非氧化焙烧工艺的热力学分析

通过热力学研究了几种非氧化焙烧工艺处理辉钼矿的可行性工艺路线。采用高温真空分解法直接处理辉钼矿得到金属钼粉,可以直接用于炼钢,适宜的分解条件为:温度为1 700~1 900 K以及真空度小于100 Pa;气体产物硫可在392~490 K进行液化回收。选用氧化钙作固硫剂,碳作还原剂还原辉钼矿,可以得到Mo、Mo2C和CaS混合物,适宜的反应温度应控制在1 200 K以上。选用碳酸钠固硫剂,碳作还原剂还原辉钼矿,产物为Mo、Mo2C和Na2S,通过水洗可以得到纯度较高的钼粉,适宜反应温度应控制在900~1 100 K。     

提高黄山钼矿选矿厂生产水平的途径

通过选矿试验研究和生产数据分析，阐述提高选矿生产水平的主要途径。     

某地钼资源开发利用的研究

在我国某地发现了钼元素富集，含杂低微，品质优良的团状辉钼矿。研究者对矿及其选别性能进行了初步研究，提出了近期内合理开发利用的方向。     

斑岩铜矿铜钼分离工艺研究

介绍了钼的特性及铜钼分离技术发展现状,探讨了铜钼分离最佳工艺操作条件。试验结果表明,当选用巯基乙酸作抑铜浮钼分离抑制剂,可以很好地解决钼矿选别作业回收率低的问题。在选定的最优化条件下,经过多次精选后,钼精矿品位最终可稳定在含Mo 50.00%以上,铜钼分离钼的回收率可提高到85.00%。