德兴铜矿利用詹姆森浮选槽回收钼的可行性

介绍德兴铜矿回收钼生产过程的基本情况及詹姆森浮选槽的结构特点，指出利用詹姆森浮选槽回收钼是可行的建议进行试验研究。     

詹姆森浮选槽的发展与应用

介绍浮选技术已经应用了近百年，但詹姆森浮选槽相对来说是一种新设备，尽管詹姆森浮选槽仍以利用空气回收矿物为基本原理，但其特点与操作不同于目前主要的机械式浮选机和浮选柱。本文的目的是全面阐述詹姆森浮选槽，并着重于其不同点，然后对几个生产现场和试验实例进行研究，同时，也将回顾一下工作原理及发展历史。１操作原理詹姆森浮选槽分为两个主要区域：接触区和富集精选区。接触区在下导管中发生，在这里给人的矿浆和空气直接混合，这个过程是通过对浮选槽的高压给矿来达到。矿浆的压力输入为混合提供了动能，并向下流动通过孔板后…     

詹姆森浮选槽

本文介绍詹姆森浮选槽的主要创新特点,一些应用发展过程。该槽已应用于铅、铜、煤等选矿厂取得了可观的效果,无疑,詹姆森浮选槽在浮选厂将会起到更重要的作用。     

詹姆森型浮选柱的研究

詹姆森型浮选柱是目前国内外推崇的新型短体浮选柱。笔者以自制样机为基础，进行了充气性能和细粒煤分选的试验研究。肯定了该浮选柱的优越性能，指出了在选煤时由于柱短带来的局限性。对詹姆森型浮选柱进行了客观全面的评价。     

詹姆森浮选柱—浮选工艺的一大技术突破

本文主要论述了詹姆森浮选柱的结构、特点及在选矿、选煤中的应用前景。     

磷酸盐粗精矿在浮选柱中胺浮选精选的扩大试验结果评价

在佛罗里达磷酸盐工业中，采用二段浮选工艺来回收有价的磷酸盐矿物，在这两段流程中通常应用的是传统的浮选槽。在本研究中，作者评价了在浮选柱中使用胺从磷酸盐粗精矿中分离石英的效果，用直径为0．45m，高为1．2m的两段浮选柱进行扩大试验研究，对比了扩大规模两段浮选柱系统和传统浮选槽浮选细粒给矿和粗粒给矿的结果。     

国内某铜矿钼精选作业CCF浮选柱的应用研究

针对国内某铜矿铜钼分离作业中钼的选矿指标较差的问题,在原矿性质和问题分析的基础上,利用CCF型逆流充气式浮选柱替代原矮柱式浮选槽,同时优化了作业流程、工艺参数和药剂制度,确定了浮选柱的最佳条件参数.生产中利用2台CCF浮选柱替代4台矮柱浮选槽,获得了品位为46.82％、回收率为72.75％ 的钼精矿,实现了增产增效的目的.     

应用詹姆森浮选槽技术除去熟化池中的藻和磷

本文详述了一种经济合算的利用詹姆森浮选槽技术从废水熟化池中同时除去藻和磷的气体浮选工艺。该新处理工艺能获得98％以上的藻脱除率，处理排放水中总磷残存量低于0．3mg／L。通过罐试验来确定藻絮凝的最佳条件，然后进行扩大试验来验证所确定的化学制度和浮选装置的最佳结构参数。对这些结果进行了讨论。同时还给出了最新投入使用的工业应用设备的工艺性能数据。     

高铁泥化钼铅矿浮选新工艺试验研究

针对贵州某地高铁泥化钼铅矿的特点,采用硫化-黄药浮选方法进行了钼铅矿的浮选回收试验。试验研究结果表明采用硫化法能够有效实现钼铅矿的浮选,六偏磷酸钠的添加能够改善矿浆的分散性能,钼铅矿捕收剂以异戊基黄药效果最好,添加煤油能够增强钼铅矿表面的疏水性,加温浮选能够明显改善硫化效果和浮选指标。采用该浮选工艺成功进行了工业试验,在给矿钼品位为0.67%条件,浮选精矿钼品位可以达到5.8%,回收率达到76%。     

詹姆森浮选柱的应用

仅仅三年时间发明者的设想变成了现实。格雷厄姆·詹姆森的近似于浮选柱技术的基本方法产生与常规的高浮选柱相同的结果。该设备与标准浮选机高度相同。在澳大利亚,现已有18台詹姆森“短柱”浮选柱在工作,该项技术正被M.I.M.技术有限公司在世界范围内推向市场。诀窍在于使矿浆与空气接触的方法。泵     

高效细粒浮选柱

在充分研究Jameson浮选柱的基础上,结合“矿浆适度紊动”比“矿浆静态”更有利于细粒浮选的新观点,设计高效细粒浮选柱的实验室装置系统并从几方面分析高效细粒浮选柱的高效机理。细粒铝铋回收试验表明,在同等试验条件下,无论是精矿品位还是回收率,高效细粒浮选柱都高于Jameson射流浮选柱和XFD机械搅拌浮选机。     

应用Jameson浮选槽分选无烟煤泥的实践

作为一种新型射流式浮选机,Jameson浮选槽采用高速射流剪切空气形成负压以改善充气性能,通过强烈的气泡矿化区和稳定的浮选区分离技术以实现良好的浮选性能。文章论述了Jameson浮选槽的分选原理和机械结构特点,将其分选性能同传统的机械搅拌式浮选机进行了比较,介绍了Jameson1500/16型浮选槽应用于古汉山选煤厂分选无烟煤泥的生产情况。     

Velocity gradient and maximum floatable particle size in the Jameson cell

Due to efficient flotation of fine particle in the Jameson cell, it has been used in more than two hundred flotation plants since 1986. However, the performance of the Jameson cell decreases with the increase in the particle size in the feed. In some plants, coarse particles have to be fed to the Jameson cell because of operational and maintenance issues. Therefore, it is necessary to find the reasons of decrease of the cell performance caused by coarse particles as well as possible solutions of the problem.The present study has been carried out to delineate coarse particle flotation in the Jameson cell from a hydrodynamic point of view. In the study, flow characteristics of the fluid discharging from the downcomer to the separation tank have been investigated and a mathematical model, which can predict the velocity gradient, referred to as turbulence, has been developed in terms of fluid mechanics principles. Furthermore, experiments have been carried out to determine the maximum size of floating particle (d_max) using the developed model and experimental findings.     

新型细粒浮选柱的研究

基于Jameson浮选柱的下导管充气与矿化技术,作者设计了1套新型细粒浮选柱的实验室装置。试验结果表明,在同等试验条件下,无论是精矿品位还是回收率,新型细粒浮选柱都高于Jmneson射流浮选柱和XFD机械搅拌浮选机。     

Jameson Cell fundamentals––a revised perspective

The Jameson Cell concept was developed by Graeme Jameson of the University of Newcastle and the technology was developed for commercial application by Mount Isa Mines Limited (MIM). Laboratory investigations highlighted significant differences between Jameson Cells and other flotation technologies. The installation of Jameson Cells in MIM’s copper concentrator in 2002 has allowed a detailed investigation of Jameson Cell fundamentals to be conducted within a mineral flotation system. On line measurements, together with non-invasive measurement techniques for detailing operation within the primary contacting zone (the downcomer) and the secondary contacting zone (the tank) has allowed a detailed review of Jameson Cell operation to be conducted. This paper shows that assumptions based on mechanical flotation cells, conventional and non-conventional flotation columns and even pneumatic flotation devices do not necessarily transfer to the Jameson Cell. The effects of feed flow rate, feed percent solids, froth depth and aeration rate are discussed in relation to the Jameson Cell downcomer residence time. Aeration effects within the Jameson Cell tank are also discussed.     

Improving the recovery of coarse coal particles in a Jameson cell

It has been observed in several Jameson cell installation where the source for flotation feed is deslime screens, that the recovery of coal particles greater than 0.5 mm is not as great as that of finer material. Consequently, a research project was undertaken at a CHPP in the Bowen Basin Queensland to assess the possibility of increasing the recovery of coarser particles (+0.5 mm) within the downcomer of the Jameson cell. The effect of decreasing turbulence and agitation in a commercial-scale downcomer was investigated to assess the effect on the recovery of both coarse and fine coal particles.This paper details the findings of the test work, summarising the results relating to differences in the operating parameters within the downcomer.     

Performance optimization of Jameson flotation technology for fine coal cleaning

A performance optimization study has been conducted using a laboratory Jameson Flotation Cell, which resulted in the development of empirical models for four key response parameters, such as product ash content, product total sulfur content, combustible recovery and separation efficiency. The empirical models were utilized to identify an appropriate experimental region to achieve a target set of metallurgical performances from the treatment of a flotation feed sample. The separation performance obtained from the treatment of three additional coal samples used in this investigation indicate that a high positive bias factor of about 0.6, which translates to a wash water ratio of 2.5, is required to produce superior quality coal especially from the treatment of high ash coals. The separation performance obtained using the same orifice—downcomer combination with various size separation chambers indicate that the diameter of the separation chamber of the Jameson Cell can be potentially reduced without affecting the separation performance. In other words, more number of downcomers can be used with the same size cell, which will significantly improve the throughput capacity of the Jameson flotation technology without sacrificing the separation performance.     

新型细粒浮选柱的研究

有新的理论认为,“矿浆有适度紊动”比“矿浆静态”更有利于细粒的分选。基于此新理论,设计了一套新型细粒浮选柱的实验室装置系统,并进行室内小型浮选试验。试验结果表明,在同等试验条件下,无论是精矿品位还是回收率,新型细粒浮选柱都高于Jameson射流浮选柱和XFD机械搅拌浮选机。介绍了新型细粒浮选柱的结构和工作原理。     

Effect of Jameson cell operating variables and design characteristics on quartz-dodecylamine flotation system

The Jameson cell is a relative newcomer to separation science and technology. Its mode of operation and mechanisms differ drastically from the other flotation machines. It has a number of unique parameters affecting flotation performance. An experimental investigation of Jameson cell operating variables and some design features was carried out within the quartz-dodecylamine flotation system. These parameters included jet length, bias, % solids, downcomer plunge length, and tank diameter studied for up to three different particle size groups (i.e., −250 + 106, −106 + 53 and −53 μm). The recovery of the medium and coarse size particles dropped by 10–15% as the free jet length increased, while that of fines was nearly independent of it. The bias factor negatively affected the recovery of all three size groups almost by same proportion. The effect of the downcomer plunging length on recovery was generally negative, but it was significant only for the coarsest size groups when the plunging length was beyond 50 cm. These negative effects on flotation recovery were mostly attributed to turbulence and its particle size dependent characteristics.     

丹麦格陵兰岛东部詹姆逊盆地铜多金属矿矿石特征及成因探讨

詹姆逊盆地铜多金属矿位于格陵兰东部铜铅锌成矿带。结合野外调查,利用光薄片显微鉴定,对詹姆逊盆地铜多金属矿矿石进行系统研究。根据矿石特征可分为砂岩型,构造破碎带型和硅质岩重晶石型三类矿石。综合矿床地质特征,认为该铜多金属矿是复合叠加型矿床,早期海底热水喷流沉积形成层状硅质岩重晶石型铜铅锌矿,之后在陆源碎屑沉积时形成砂岩型铜铅锌矿,后期含矿热液沿构造及砂岩层位充填交代、并对早期砂岩矿化层进一步热液叠加富集成矿。对该矿床的矿石特征及成因的总结,有助于推动该区的进一步找矿工作。