陶瓷过滤机在转炉渣选矿厂的应用研究

介绍陶瓷过滤机的原理、特点及国内应用实例;利用过滤面积1m2的小型工业试验陶瓷过滤机对冶炼渣选矿厂铜精矿进行工业试验,探讨其可行性.结果表明陶瓷过滤机生产能力达500～2000kg/m2·h,滤饼水分小于10%.     

影响陶瓷过滤机生产指标的原因探讨及对策

经过对陶瓷过滤机工业试验数据及各种条件变化情况的分析，认为影响陶瓷过滤机生产指标的根本原因是精矿粒度，并提出了改善陶瓷过滤机生产指标并全面提高二期精矿脱水系统生产能力、降低滤饼水份的技术措施－－实行粗、细粒分滤。     

陶瓷过滤机应用于浮选铜镍精矿的研究

在陶瓷过滤机小型和半工业试验基础上，重点研究金川铜镍精矿粘度大，粒度细和浮选药剂等影响因素，研究表明：矿浆浓度在60％以上，处理能力达400－500kg/m^2.h，滤饼水份在11．5％左右。陶瓷过滤机与Larox-PF25A1压滤机，TWJ－40真空过滤机相比，生产费用分别低60％，34％，充分证明陶瓷过滤机是一种新型高效节能过滤设备。     

陶瓷过滤机应用于炉渣选矿尾矿脱水的实践与探索

陶瓷过滤机是一种应用较广的脱水设备。本文概述了铜炉渣选矿尾矿应用陶瓷过滤机脱水的生产状况,发现了影响系统生产的各类问题并提出了改进措施;探索研究了工艺、设备及物料性质对选矿尾矿过滤产能的影响,在最佳工艺条件下,陶瓷过滤机产能可达291kg/(m2·h)。     

铜钼混合精矿分离浮选工业试验研究

介绍了国外从斑岩铜矿中回收钼的主要矿山和进行铜、钼浮选分离的主要方法。乌努格吐山大型斑岩铜钼矿选矿通过小型试验和前期工业试验,找出了工业生产中存在铜钼混合精矿脱水脱药不理想、陶瓷过滤机无法过滤-325目含量占88%铜精矿的问题。最后经过尝试,用原有陶瓷过滤机过滤混合精矿,脱水脱药效果明显,并使用加压过滤机过滤铜精矿,解决了陶瓷过滤机无法过滤细粒级铜精矿的难题。选矿工艺流程经改造后,试生产连续产出了合格的钼精矿,钼精矿品位为48%、含铜1.2%。同时,对铜、钼分离工艺中的一些主要问题进行了分析讨论。     

国产陶瓷过滤机的中标分析

通过对TT型陶瓷过滤机与国外压滤机的试验和技术经济指标比较，分析了TT型陶瓷过滤机中标的主要原因。     

立盘过滤机过滤铝土矿正浮选精矿的试验研究

介绍采用小型立盘过滤机对铝土矿正浮选精矿的过滤试验,利用Minitab软件对过滤的运行时间、进料浓度、真空度及过滤机产能试验数据进行多元回归分析,试验取得较好效果。与生产中使用的新型陶瓷圆盘真空过滤机相比,其滤饼含水量和滤液浮游物含量两项过滤指标相当,产能提高,采用无纺布过滤精度较高,在相同过滤面积条件下,设备价格低于陶瓷圆盘真空过滤机20％以上。     

TM-21陶瓷过滤机应用与过滤效果探讨

本文介绍了陶瓷过滤机的结构,阐述了陶瓷过滤机的的工作原理,分析了影响陶瓷过滤机脱水效果的因素、陶瓷过滤机常见故障的原因,提出了提高陶瓷过滤机过滤效果的措施。     

提高铝土矿选矿中陶瓷过滤机产能的探讨

2003年10月,铝土矿选矿—拜耳法高新技术产业化示范工程生产线的磨浮流程,在中国铝业中州分公司一次投料试车成功,这标志着选矿—拜耳法高新技术在国内氧化铝生产上得到了工业应用。在后续的试车及试车生产过程中,随着指标的不断优化,一个极为突出的问题摆在了面前,即用于过滤浮选铝土矿精矿的陶瓷过滤机,其实际产能与原设计产能明显不符,满足不了后续氧化铝生产的需要,这使得陶瓷过滤机产能成为制约生产的瓶颈。本文针对陶瓷过滤机的特点,通过多方面分析,确定了提高陶瓷过滤机产能的技术方向,并进行了实施,取得了明显的效果。陶瓷过滤机的…     

影响陶瓷过滤机产能的因素

介绍了陶瓷过滤机的工作原理、影响陶瓷过滤机产能的因素以及提高陶瓷过滤机产能的最佳方法.     

陶瓷过滤机在铅锌选矿厂的成功应用

通过折带过滤机与陶瓷过滤机使用情况进行比较，得出陶瓷过滤机节能，操作简便，维护量小，物料脱水效果佳。给公司带来了显著的经济效益和社会效益。     

The Influence of Non‐Metallic Inclusions Physical State on Effectiveness of the Steel Filtration Process

The work presents theoretical fundamentals of the process of refining molten steel from liquid non‐metallic inclusions, using the method of filtration with ceramic filters ‐ the thermodynamic precondition for the absorption of liquid non‐metallic inclusions on the surface of a ceramic filter. The theoretical consideration has been supported by the results of laboratory tests on the filtration of steel which was previously reduced with complex deoxidants giving liquid products of deoxidization. The filtration process of steel melts reduced with complex deoxidants of type Al‐Mn‐Si has proved to be more efficient. The deoxidation products were identified on the filtration surface of the ceramic filters.     

高海拔地区选矿厂加压过滤技术应用实践

西藏华泰龙矿业开发有限公司甲玛项目一期工程选矿厂地处西藏高原地区,海拔超过4 000 m,受大气压的影响,陶瓷过滤机的真空过滤效果不佳,铜精矿产品水分达不到国家标准。在甲玛二期扩建工程中,铜精矿产品脱水改进为加压过滤技术,这不但提高了铜精矿细度,使产品水分达到了国家标准,还解决了陶瓷过滤机酸洗后酸性水进入生产水系统造成p H波动而影响选矿回收率的问题,且技术经济指标及安全环保得到明显改善。     

The Slenderness Ratio of the Filter Used in the Process of Liquid Steel Filtration as the Additional Parameter of the Filter Form

We propose in this publication the introduction of new, additional definition describing the multiple orifice ceramic filters used in research works on the liquid steel filtrations, calling this the filter slenderness ratio. In order to confirm the theoretical assumptions we have performed a series of the laboratory scale experiments (for the filter slenderness ratio S_F1 λ = 1.67 and S_F2 λ = 3.34). The influence of the filter slenderness on the filtration process efficiency has been determined through variations in quantities and surface shares of the non‐metallic inclusions in the filtrated steel in relation to the non‐filtered steel. We present also the results of researches on the separating surfaces between the liquid steel and the ceramic filter material, which in form of photos and scanning microscope microanalyses are put together in the publication.     

太钢冶炼废水处理纤维球过滤器系统的改造

介绍工业废水处理工艺中使用纤维球过滤器的优越性，重点介绍螺旋桨式反洗搅拌结构的合理设计及改造。     

Stiffness Evaluation and Damage Detection of Ceramic Candle Filters

This paper presents a nondestructive evaluation method to identify the structural stiffness of ceramic candle filters. A ceramic candle filter is a hollow cylindrical structure made of a porous ceramic material used in advanced, coal-fired power generation systems. The candle filters need to sustain an extreme thermal and chemical environment over a great period of time to protect the gas turbine components from exposure to particulate matter. A total of 92 new candle filters and 29 used candle filters have been tested nondestructively using a dynamic characterization technique. All filters were subjected to an excitation force, and the response was picked up by an accelerometer in a free-free boundary condition. The frequency response function and vibration mode shapes of each filter were evaluated. Beam vibration equations and finite-element models were built to calculate the filter's dynamic response. Results indicate that the vibration signatures can be used as an index to quantify the structural properties of ceramic candle filters. The results also show estimations of the overall bending stiffness values for four different types of candle filters. The used filters show a trend of stiffness degradation, which was related to the filter's exposure time. Damage detection procedures using modal strain energy and finite-element simulation were studied for detection of a localized damage in the candle filter. The location and the size of the damaged section can be identified using the measured model strain energy.     

Ceramic Filters Impregnated with Silver Nanoparticles for Point-of-Use Water Treatment in Rural Guatemala

The technological performance and social acceptance of ceramic water filters impregnated with silver nanoparticles for point-of-use water treatment were investigated in the laboratory and in the field in the Guatemalan highland community of San Mateo Ixtatán. In the laboratory, filters were constructed with clay and sawdust collected from the Guatemalan community and were tested to determine the effects of percent sawdust and silver nanoparticle treatment on the transport and removal of E. coli. For ceramic filters without silver treatment, size-exclusion and/or sorption is the mechanism of removal and a lower mass-percent sawdust corresponds to greater bacteria removal. The addition of silver nanoparticles to the ceramic filters improved the performance for all mass percentages of sawdust relative to filter media without nanoparticle treatment. Filters with higher porosity achieved higher bacteria removal than those with lower porosity, suggesting an increase in burnable material percentage is advantageous, assuming structural integrity is not compromised. Subsequent to laboratory testing, ceramic filters were manufactured with local materials and labor in San Mateo Ixtatán, Guatemala, and distributed to 62 households in this peri-urban community. The study participants were randomly divided into two groups, and filters were tested periodically over 23?months or 12?months. Filtered effluent samples were tested for turbidity reduction, bacteria removal, and silver leaching. Over the course of the study, the average percent reduction in total coliforms and E. coli was 87% and 92%, respectively. The average effluent turbidity was 0.18 nephelometric turbidity units (NTUs) and average effluent concentration of ionic silver was 0.02??mg/L (below the U.S. EPA standard of 0.1??mg/L). Filters distributed to the second study group consistently performed better than the first study group as manufacturing techniques improved and contact with researchers increased. Overall, users were satisfied with the filters, citing them as easy to use and maintain while improving water quality. The findings of this study suggest that locally manufactured ceramic filters can significantly improve the microbiological quality of water when used as a point-of-use water-treatment technology.     

Direct simulation of initial filtration phenomena within highly porous media

Initial filtration phenomena within highly porous filter media—ceramic foam filters (CFF) —were simulated by numerically solving the Navier-Stokes equations and the general transport equation for suspended particles. In this approach, a “piece” of the highly porous filter was modeled directly by constructing a calculation domain such that the main average geometrical properties of the real filters were embodied therein. The governing equations were then solved by imposing appropriate boundary conditions on the solid surfaces of the filter webs. The influences of Reynolds, Peclet, and Gravitational numbers, as well as filter porosity, on initial filtration efficiencies were investigated in this simulation. Predicted results were spotchecked against data from industrial filtration trials conducted by the authors for aluminum melts and found to be in good agreement.     

陶瓷过滤机在精矿脱水中的应用

陶瓷过滤机是目前国内外的过滤技术中最先进的过滤。该设备在国内外的广泛试验和生产实践应用表明：工艺成熟、设备运行可靠、过滤效果好、自动化水平高、操作维护简单方便。采用陶瓷过滤机代替真空过滤机等设备不但可以降低精矿水分,而且可以大幅度降低精矿的生产成本,对企业的经济效益和社会效益的提高将有很大的帮助。