共查询到20条相似文献,搜索用时 62 毫秒
1.
浮选回路配置的浮选动力学探讨 总被引:1,自引:0,他引:1
本文从浮选动力学的角度,对选矿厂浮选回路配置进行了探讨。认为采用目前性能先进的短柱型浮选机,单排配置槽数少,有利于矿物浮选性能的改善。 相似文献
2.
3.
本文介绍了最近为浮选柱和浮选柱系统研制的控制系统的原理和应用。控制系统把三个压力敏感器直接用于测量敏感区的密度和液面高度,帮助说明单个浮选柱的操作特点。在该系统内,合并了一套专家系统研制工具,以提供全部操作工培训、一台在线辅助设备和把浮选柱性能图合并到作决策准则的方法。该系统可适合任何数量的浮选柱,可以通过管理模式或通过Minnorex比例积分微分控制器软件的直接控制来操作该系统。如果希望的话,可以把补充的工艺信号与该系统连接。本文还介绍了Minnrex浮选柱浮选中间试验厂控制系统的操作经验。 相似文献
4.
5.
6.
7.
介绍了FX-127浮选油的组成、性质、起泡性能和浮选锡矿山辉锑矿的工业试验结果及使用情况。 相似文献
8.
用浮选柱反浮选铁矿的研究 总被引:7,自引:0,他引:7
用浮选柱进行铁矿“反浮选”,脉石(石英)经浮选进入泡沫产品中。本研究的目的是确定几种适于铁矿反浮选的浮选柱类型。分别采用Jameson浮选柱和 Deister浮选柱进行试验研究。一段Jameson浮选柱和一段维姆科浮选机的试验结果对比表明,Jameson浮选柱没有进一步试验的必要。Deister浮选柱实验室试验很成功,用该浮选柱组成的粗选-精选两段工艺获得了很好的试验指标。然而,实验室规模的浮选柱按比例放大到工业规模通常存在以下的问题,随着规模增大,浮选柱高度增大,浮选柱高度与直径比减小,使轴向混合和泡沫兼并加剧,这两大问题降低了浮选柱的性能。在浮选柱内安装水平稳流板的研究显示,稳流板可减小轴向混合,分散大泡沫,改善浮选柱的性能,因此,在铁精矿反浮选中,推荐使用带有水平稳流板的浮选柱。 相似文献
9.
10.
11.
Low pulp density and low grade slurries in the coal and minerals industries are discharged as waste to tailings dams, incurring significant losses of valuable particles. This paper investigates the rapid processing and cleaning of hydrocyclone overflow coal slurry using two laboratory scale Reflux Flotation Cells in series as a means to economically beneficiate low quality tailings streams. The Reflux Flotation Cell incorporates a novel arrangement of inclined channels to enhance bubble-liquid segregation, enabling extremely high gas rates and liquid rates per unit of vessel area. Hence, in the first stage, fast flotation is employed to rapidly recover fine coal particles using a feed flux of 11.4 ± 0.5 cm/s, up to an order of magnitude increase in the throughput rate over conventional flotation systems. First stage product was then sent to a second stage for counter-current washing using fluidisation wash water to produce a fully deslimed product, having ash percent in agreement with the minimum ash attainable using flotation as determined through tree flotation analysis. The results demonstrate the potential for two-stage Reflux Flotation to deliver high throughput at a high separation efficiency from low quality slurry, with a fivefold reduction in the required vessel footprint, thus overcoming the principal economic deterrent of having to install banks of large-scale flotation cells. 相似文献
12.
云母是一种性能独特的层状铝硅酸盐矿物,用途十分广泛。本文详细分析了云母矿物的晶体结构、表面性质及浮选药剂与云母的作用机理,综述了云母浮选捕收剂和抑制剂的研究现状,探讨了云母浮选传统工艺、新工艺和新装备的研究进展及实际应用。最后提出了云母浮选存在的问题并展望了未来的研究趋势。 相似文献
13.
14.
通过三乙醇胺对油酸进行酯化改性,获得油酸酯化改性捕收剂,经红外光谱分析表明,具有明显特征吸收峰。通过浮选机理研究,在试验用量范围内,胶磷矿纯矿物与改性捕收剂作用后接触角可达87.23°(此时上浮回收率达97.87%);油酸改性捕收剂引入亲水基团,CMC提高19.58倍,在水中溶解性增加;同时改性后的捕收剂分子截面积由7.27 ?2增大至9.51 ?2,分子截面积提高了30.81%。药剂作用机理的研究,对与纯矿物来自同一矿山的低品位磷矿石浮选具有较强理论指导意义。 相似文献
15.
16.
Preliminary studies of the floatability characteristics of monazite, zircon and rutile, performed in a modified Hallimond tube, initiated a bench scale investigation of the flotation of a Brazilian monazite ore from Sao Goncalo do Sapucai, MG. The testwork was conducted with the utilisation of a commercial hydroxamate and sodium oleate as collectors and sodium metasilicate as depressant. In all tests, the best collector/depressant ratio defined during the microflotation experiments was confirmed at bench scale. The results indicated that with both collectors it is possible to produce a high purity cleaner monazite concentrate (> 60% RE2O3). The concentrations of collector and depressant must be well defined to prevent a significant increase in the flotation of gamgue minerals such as ilmenite, zircon and rutile, causing contamination of the monazite concentrate. 相似文献
17.
18.
S.R.S. Sastri P.S.R. Reddy K.K. Bhattacharyya S.G. Kumar K.S. Narasimhan 《Minerals Engineering》1988,1(4)
Tests carried out on 100mm dia × 2300mm high flotation column using coal fines from the coking coal washeries at Sudamdih, Patherdih, Kathara and Moonidih (India) have shown that the performance of the column is superior to that of the conventional cells with respect to the grade and recovery of the product. The column is found to operate efficiently both on coarse and fine fractions in the feed. The reasons for the superior performance of the flotation column have been analysed. 相似文献
19.
根据微泡浮选新理论研制的射流浮选机通过在选钼中的应用与研究,拓宽了该机型的应用领域,且为提高钼精矿产品质量提供了一个新的途径,同时为细粒浮选探索出一条新路子. 相似文献