新型过滤机在工业领域的应用

论述新型自动厢式压滤机和带式真空过滤机的工作原理及其应用;介绍其他过滤机在工业领域的应用情况,并简述常用过滤介质的类别、物性与新型彗星式纤维滤料的特点和应用。     

新型过滤机在工业领域的应用（续1）

论述新型自动厢式压滤机和带式真空过滤机的工作原理及其应用;介绍其他过滤机在工业领域的应用情况,并简述常用过滤介质的类别、物性与新型彗星式纤维滤料的特点和应用。     

新型过滤机的研究设计

本文审视了各类过滤机设备的现状后，介绍了新型过滤机的研究设计概况，对其性能及特点作了分析，阐明其应用的灵活性和多功能性，指出该机可替代目前所用的各类过滤机，它的广泛推广应用将会带来显著的经济效益、环境效益和综合社会效益。     

新型真空带式过滤机在超细铁精矿脱水中的研究实践

介绍了新型真空带式过滤机的工作原理、主要技术特点,并详细介绍了该过滤机用于超细铁精矿半工业脱水试验的具体情况.通过实践取得了良好效果,说明该型过滤机能够满足超细铁精矿脱水生产的需要,具有较大的应用价值.     

水平带式真空过滤机过滤锌浸出渣

水平带式真空过滤机是一种新型高效过滤设备。文章介绍了过滤机的结构、工作原理及过滤机过滤、洗涤效果的测定数据，讨论了影响过滤机工作及效能的因素。     

真空带式过滤机在镍钴粉体材料生产中的应用

真空带式过滤机是一种自动化程度较高的新型固液分离设备。它利用物料重力和真空吸力实现高效固液分离,将过滤与洗涤融为一体,具有洗涤效率高、卸除方便、滤带使用寿命长等特点。本文介绍了真空带式过滤机的工作原理及其在镍钴粉体材料生产中的应用。     

科研成果鉴定获奖组讯

·山东铝新型过滤机达到国际先进水平由中国铝业山东分公司恒成机械制造厂开发设计的100m^2新型赤泥转鼓过滤机，日前通过了中国有色金属工业协会专家组的技术鉴定，鉴定意见认为，该产品技术性能达到国际先进水平，填补了国内大型化、自动化过滤机设备空白。     

水平带式过滤机分离氢氧化铝的实践与改进

介绍新型固定室水平带式真空过滤机在氢氧化铝生产过程中的应用,简要分析新设备的生产特性,提出针对性的改进措施。     

《新型实用过滤技术》简介

《新型实用过滤技术》是冶金工业出版社于世纪之交出版的新书。共分20章,全书82.6万字附有彩页。全面介绍了过滤理论的新成果,包括近代过滤理论,压榨理论,非牛顿型流体过滤理论,多相过滤理论。阐述了新型助滤技术,动态过滤,微孔过滤,澄清(粒状层)过滤,高梯度磁、电分离技术。编著者还根据多年从事过滤技术的设计、研究和推广应用的经验,重点介绍了常用及新型过滤机、过滤机的辅助设备、过滤机安装、系统调试与故障排除、过滤实验技术装置、过滤机的比例放大、过滤机的设计计算、过滤机的选型等以及过滤技术在选矿,冶金,煤炭、石油、化工、医…     

新型盘式过滤机的研究与应用

本文概述了新型盘式过滤机的国外发展情况，介绍了其工作原理，并提出了国内研究盘式过滤机的发展方向。     

固体颗粒床高温除尘器的等温实验研究

针对工业界提出的高温除尘问题,采用固体颗粒床除尘方式,对用砂粒作为过滤介质的可行性和实用性进行了研究.通过模拟高炉一次除尘后的含尘气体浓度,进行了固体颗粒床除尘器的等温实验,探索了气体过滤速度、过滤床层厚度对除尘器除尘效率和床层压力损失的影响.根据实验结果,确定了最佳过滤速度和过滤床层厚度.     

复合管膜的润湿性及过滤污水机理

为了研究多孔复合管膜对钢铁产业污水的过滤性能及其过滤机理,采用静滴法做了水滴和油滴在复合管膜上的润湿性研究。采用扫描电镜、EDS等手段分析了使用前后的多孔复合管膜外壁及内壁的结构及成分,分析了含油污水中固体颗粒及油的过滤机理,并利用视频光学接触角测量仪测量水滴和油滴在复合管膜上接触角随时间的变化速率。结果表明,在污水过滤过程中,水中小于管膜表层微孔孔径的氧化铁等杂质进入复合管膜内部,无法随水流穿过复合管膜膜层,积累在管膜内部;随着管膜使用时间延长,氧化铁等杂质在复合管膜内部积累量增多。水在复合管膜上的润湿性良好,油滴在复合管膜上是不润湿的。     

Comparison of the Ability of Three Coagulants to Enhance Filter Performance

In the operation of porous media filtration systems, poor initial performance is often observed, in which particle removal is less than desired. Alum (Al2(SO4)3?14H2O), ferric chloride (FeCl3), and polyaluminum chloride (PACl), are often used in drinking-water treatment to modify the surface properties of the particles being filtered and enhance their removal by filters; however, modification of the filter medium is not a common practice. In this research, these three coagulants were used to artificially modify a sand medium in situ by adding metal hydroxide precipitates onto the top of the filter before challenging the filter with an otherwise untreated kaolin suspension. After modification of the filter medium, high particle-removal efficiencies were achieved using a short (7.5?cm) sand column with ? 1??mm diameter sand. The best observed particle removal (96%) using alum and PACl occurred at the surface loading of 550?mmol of Al/m2. The filter performance deteriorated at higher surface loadings. Fractional colloid removal increased with increased ferric chloride surface loading over the entire range of dosages tested (up to 97.5% at 2,200?mmol Fe/m2). The experimental results suggest that pretreatment of filter media by application of Fe or Al hydroxides can eliminate the initial poor performance.     

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。     

Analyses of the dynamic processes of liquid metal filtration

The dynamic processes of liquid metal filtration with reticulated ceramic filters prior to filter “ripening” were analyzed theoretically by examining the changes in the filter coefficient as a function of its independent variables during the filter aging period. Correlations relating the filter coefficient and pressure gradient to the specific deposit (volume fraction of nonmetallic particles captured within the filter) were derived and then solved numerically to simulate the dynamic behavior of liquid aluminum filtration. Simulated results showed that the particle-capture process within the filter possesses an autocatalytic behavior. The filtration efficiency of, and pressure gradient within, the filter were found to increase with filtration time and with particle concentration within the melt. These increases were, however, negligibly small for the first 2-hour period of filtration if the particle concentration within the melt was lower than 1 ppm by volume; when the particle concentration reached 10 ppm, increases in filtration efficiency became appreciable. This corresponds to a passage of about 160,000 kg of 10-ppm liquid aluminum per square meter of filter area.     

Time-Dependent Particle Transport through Granular Filters

This paper describes an analytical model of filtration for granular media, based on the mechanics of particle migration under hydraulic loads. A new equation to predict the probability of particle movement through a 3D network model of the filter voids has been developed. Void constriction sizes are determined based on the particle-size distribution and relative density of the filter. An important new development is the differentiation between particles that form part of the filter structure and fine particles that are loose within the filter voids, or coarse particles that are enmeshed in a matrix of fines. The rate of particle erosion and transport is governed by the consideration of mass and momentum conservation. The model describes the time-dependent change of flow rate and base and filter particle-size distribution, porosity, and permeability. The model has application in the design of granular filters for noncohesive uniform, well-, and broadly graded base and filter materials.     

Stress-Controlled Filtration with Compressible Particles

This paper documents a novel filtration technology that incorporates low-stiffness filter matrix particles. The application of isotropic stresses leads to the compression of particles and ensuing pore throat size reductions in the filter matrix. The filtration capacity of the matrix is improved with increasing confinement because the retention of filtrate particles increases due to particulate plugging and bridging on the reduced pore throats. Conversely, relaxing the applied stresses renders system expansion, increased pore throat sizes, and enhanced flushing of entrapped particles from the filter. Experimental results indicate that this technology is most efficient in cases where particle retention occurs due to geometrical constraints (i.e., bridging); however, the system can also render filtration by surface deposition due to the net electrical attraction between the filtrate and filter. Experimental results are analyzed by considering particle-scale filtration mechanisms.     

循环水系统双介质压力过滤器存在问题分析及改进措施

在冶金工业炼钢、轧钢工艺系统中,浊环水的水处理工艺一般都采用三段式流程,旋流井－平流池（化学除油器）－双介质过滤。因此,循环水处理过程中过滤工艺是保证循环水水质的关键。通过对双介质过滤器存在问题、影响过滤器运行因素的分析,提出改进措施。