加压过滤机用于选煤厂浮选精煤脱水

介绍了６０ｍ~２加压过滤机的研制和应用情况，并通过与圆盘真空过滤机相比较证明，加压过滤机用于浮选精煤脱水具有很多优点。     

快开式隔膜压滤机在浮选精煤脱水系统的应用

阐述了快开式隔膜压滤机的结构性能与工作原理,并与加压过滤机、圆盘式真空过滤机进行了对比;介绍了唐山矿业分公司选煤厂应用快开式隔膜压滤机对浮选精煤进行脱水的技术效果、经济效益以及生产中应该注意的问题。     

浮选精煤和煤泥脱水的高效设备——加压过滤机

针对我国浮选精煤和煤泥脱水的现状，介绍了加压过滤机的特点。实践证明，加压过滤机与真空过滤机相比，处理能力提高４倍，滤饼水分降低６％～１５％，能耗降低２０％～３０％。     

GPJ-120型加压过滤机在潘集选煤厂的工艺效果

简述了GPJ-120型加压过滤机的结构、工作原理及技术特点;为了解加压过滤机的脱水性能、降灰幅度和分级作用,对潘集选煤厂的GPJ-120型加压过滤机进行了工业性试验;结果表明,加压过滤机脱水率为93.86%,脱水性能良好;滤饼绝对降灰平均值为0.79个百分点;次生细泥绝对增量为2.21个百分点,该设备对煤粒的分级作用甚微。     

隔膜快开压滤机及其在浮选精煤脱水工艺中的应用

介绍了圆盘真空过滤机、加压过滤机、板框(或厢式)压滤机在煤泥脱水方面存在的问题,论述了研制开发的浮选精煤隔膜快开压滤机的结构特点和工作原理;应用结果表明,新型压滤机脱水效率高,精煤滤饼水分低,工艺指标先进,节能效果明显,具有广阔的推广应用前景。     

加压过滤机用于浮选精煤和原生煤泥脱水的研究

加压过滤机用于浮选精煤和原生煤泥脱水试验的研究结果表明 ,影响前者过滤效果的主要因素是料浆的浓度、固体粒度组成及灰分 ,影响后者过滤效果的主要因素是粒度组成、料浆的粘度及透水性。通过添加絮凝剂 ,或采用不同的过滤介质 ,可改善过滤效果     

陶瓷过滤机在磷精矿脱水中的应用

介绍了陶瓷过滤机工作原理,采用HTG-15-Ⅱ型陶瓷过滤机对磷精矿进行了工业生产试验,结果表明磷精矿滤饼水分大大降低,认为陶瓷过滤机可替代其他脱水设备对磷精矿进行脱水.     

五沟选煤厂浮选精煤脱水工艺改造研究

五沟选煤厂为解决煤质恶化、矸石泥化现象严重、加压过滤机处理量低、浮选精矿池经常漫料、压滤机尾煤灰分偏低等问题,采用加压过滤机处理粗粒精煤、压滤机处理细粒精煤的联合回收工艺对浮选精煤脱水工艺进行改造,提高了浮选精煤产率,取得了显著经济效益。     

加压过滤机用于选煤厂煤泥水处理的试验研究

针对不同选煤厂应用加压过滤机对煤泥脱水的实践,分析了入料粒度、入料浓度、工作压力、过滤介质、絮凝剂等影响加压过滤机过滤效果的主要因素,证明了加压过滤机是理想的煤泥水处理设备。     

有关浮选精煤脱水设备的选用

介绍了选煤厂常用的浮选精煤脱水设备的使用现状 ,主要对加压过滤机和精煤压滤机进行了对比分析 ;认为选煤厂要实现综合精煤水分在 1 0 %以下 ,则应在浮选精煤脱水中选用效率高、能力大的设备     

ZPG-30型盘式真空过滤机在漓诸铁矿的应用实践

介绍了 ZPG- 30型盘式真空过滤机在漓诸铁矿铁精矿过滤中的试验使用情况 ,结果表明 ZPG- 30型盘式真空过滤机的滤饼水分小于 10 .5% ,比原永磁外滤机降低 2个百分点 ;过滤系数可达 770 kg/m2· h,运输途耗降低 0 .8个百分点 ,全年可减少损失 80万元 ,是降低细粒铁精矿过滤水分的有效设备     

The Effect of Flocculants and Surfactants on the Filtration Dewatering of Iron Ore Fines

Abstract

The filtration and separation characteristics of iron ore fines have been investigated. The experimental work included: characterization, evaluation of suitable flocculants to enhance settling and dewatering rate, determination of optimum dosages of flocculants, and influence of surfactants on nitration dewatering of both flocculated and unflocculated iron ore fines by vacuum filtration. The results showed that 1) the settling rate can be enhanced many-fold (from 2.52 to 90 m/h) by a suitable flocculant, 2) the residual filter cake moisture content can be reduced from 18.2% without reagents to 12.6% with suitable surfactant dewatering aids while the filtration rate can be enhanced from 4.8 to 97.2 L/h with suitable dewatering filter aids, and 3) the specific cake resistance to filtration can be brought down from 8.6 × 10⁹ to 1.0 × 10⁹ m/kg by using a surfactant sodium petroleum sulfonate at a concentration of 1.47 × 10^?3 kg/t. The economics of using flocculant filter aids and surfactant dewatering aids before thermal drying is described and discussed.     

The Vacuum Filtration of Iron Ore Ultrafines

ABSTRACT

The dewatering of fine particles (? 0.5 + 0 mm) derived from iron ore processing is a topic of increasing importance to Australian producers. With little previous published work in this area, it is difficult to predict how these materials are going to dewater, in particular during vacuum filtration. The work described in this paper was therefore undertaken in order to help overcome this paucity of background information. The sample of iron ore that was tested responded well to vacuum filtration provided that anionic flocculants were used as a filter aid. In the presence of these polymers, cake formation times were very short (mainly below 10 seconds) and the moisture levels of 18 mm thick filter cakes were reduced to 10–11 wt% after dewatering times of only 40 seconds. By comparison, the cationic and nonionic flocculants tested were much less effective. The mathematical model devised by Wakeman shows considerable promise as a toolfor predicting the kinetics of desaturation.     

机械力活化对铁尾矿活化性能的影响研究

通过机械粉磨时间对铁尾矿粉密度、比表面积、颗粒分布以及微观形貌影响研究得出：随着粉磨时间的延长,铁尾矿粉颗粒逐渐被细化,密度先减后增,比表面积先增后减;粉磨2 h时,比表面积达到最大值770 m2／kg,粒径（5±2）μm的颗粒含量约为40％,且小于5．13μm的颗粒累积含量最高,但过度粉磨会有弱团聚现象;通过研究机械力活化对铁尾矿粉活性的影响以及红外光谱（ IR）分析得出：粉磨2 h的铁尾矿粉在10％～50％掺量下,其3 d、7 d、28 d抗折强度比与活性指数均为最大值,该粉磨时间下最大程度的活化了铁尾矿粉;机械粉磨细化作用使颗粒无序化物质增多,致使活性提高。     

分子筛浆料助滤技术的开发和应用

通过建立分子筛浆料过滤速率的测定方法,对四种分子筛浆料的固液分离、交换和洗涤过程的过滤速率进行了研究,开发的四种助滤剂可有效改善不同分子筛的固液分离、交换和洗涤过程的过滤速率。这四项助滤技术已在三家国内主要的裂化催化剂厂广泛的得到应用,使带式过滤机彻底取代了板框过滤机,解决了企业生产中长期存在的瓶颈问题。     

污水厂污泥脱水系统升级改造设计与经济技术分析

台州市江口污水处理厂对污泥深度脱水系统进行升级改造,采用"污泥浓缩+化学调理+高压隔膜压滤"工艺,对污泥进行有效的减量化、稳定化处理,并能节省41%的污泥运输及处置费。介绍了该工程工艺流程及关键设计参数,并对升级改造工程的工程投资、实施后的效果、直接运行费及经济效益等进行进一步分析。     

降低过滤机滤饼水分和细粒煤脱水浅析

根据对选煤厂细粒煤样的实验室优化脱水试验、工业试验及分析结果 ,对真空系统、气水分离器和分配头实施了技术改造 ,细粒煤脱水系统的运行状况得到显著改善 :圆盘真空过滤机滤饼水分降到 2 0 %左右 ,脱饼率在 95 %以上 ,每年的直接经济效益可达 30 0多万元     

陶瓷过滤机在磷精矿脱水工艺中的应用

为了降低磷矿的物流成本,采用陶瓷过滤机对磷精矿浆进行脱水处理。介绍了陶瓷过滤机的结构及工作原理,以及在磷精矿脱水工艺应用中存在的问题及整改措施。通过在工艺与设备方面对陶瓷过滤系统进行整改,使得脱水后的磷精矿中w(H2O)达到12%,产能基本达到了设计要求。     

A Study for Development of Real-Scale Thermal Filter Press Dewatering (TFPD)

Real-scale thermal filter press dewatering equipment (plate size: 630 mm × 630 mm) was installed and operated at a waterworks for one year in an attempt to achieve sludge reduction. During the period, the dewaterability was evaluated according to the seasonal sludge properties in order to compare the dewaterability of thermal dewatering and mechanical dewatering, as well as to determine the economics of thermal dewatering. According to the results, the winter season sludge showed a 36% decrease in water content and a two-thirds reduction in dewatering velocity compared to the summertime sludge. In addition, the dewatered cakes of the thermal filter press dewatering equipment showed a lower specific cake resistance and water content in the dewatered cakes than the mechanical filter press dewatering equipment, indicating superior dewaterability. This was attributed to the easier removal of the filtrate remaining in the capillary tubes due to thermal dewatering. The energy consumption for thermal dewatering was 300 kJ/dry solids (DS) kg. A comparison of the sludge dryers indicated that it is possible to produce dewatered cakes that consume less energy and can be recycled. According to the performance evaluation results, the real-scale thermal filter press dewatering equipment had high adaptability to the changes in seasonal sludge, showing excellent dewaterability compared to the mechanical filter press dewatering equipment, and was economical due to the lower energy consumption.     

一种新型污泥脱水设备-滚压式污泥脱水机

滚压式污泥脱水机是一种新型的用于污泥脱水的过滤机械,它脱水率高,固相保留率高,连续工作时间长,并且全过程封闭。重点介绍了这种脱水机的结构,通过与现有的几种比较流行的污泥脱水过滤机的比较,说明其具有良好的污泥脱水功能。