dewatering behavior improved

  • The effects of polymeric additive on papermaking

    depends on the rate and amount of slurry dewatering Bustos et al 1999 The behavior of a slurry which is governed by ore geology and the metal extraction process can be improved by agglomerating individual particles and or particle groups to develop multi-particle flocs that can settle rapidly Torfs et al 1996 Long-chain

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  • Dewatering Behavior of a Wood-Cellulose Nanofibril

    A laboratory investigation was conducted for studying the efficacy of geotextile tubes for dewatering hydraulically transported fly ash slurry The dewatering behavior of unmodified fly ash was compared with that of specimens reinforced with randomly dispersed flexible PVA fibers and or flocculated with optimized polyacrylamide

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  • A NOVEL FINE COAL DEWATERING PROCESS WITH …

    Aug 29 1989· The flocculated and thickened sludge may then be dewatered much more quickly with the dewatering behavior improved additionally by causing a reactivating flocculation to take place on the delivery side of the sludge feed pump The Figures show a preferred embodiment of the inventive sludge dewatering system using a recessed plate press

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  • Evaluation of Dewatering Performance and Fractal

    Nevertheless sludge dewatering remains expensive Chemicals such as alum polymeric ferric sulfate polyacrylamide and chitosan are typically incorporated in sludge to improve the dewaterability Flocculants given at the fixed dosages are commonly used in conditioning the physical and chemical properties of sludge to improve sludge

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  • Improved Dewatering Behavior of Clay Minerals Dispersions

    The effect of anionic polyacrylamide flocculant on the dewatering performance was also evaluated Results indicate that geotextile tubes can be effectively used for dewatering flocculated fly ash slurries and that the strength of retained fly ash can be improved by adding fibers

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  • US4861492A - Method of dewatering sewage sludge

    The role of iron in improving the dewatering of the sludges was found to be important with the sludge dewatering being better for sludges with a high iron content The combination of high pH divalent cation precipitation iron deficiency and biopolymer release all contribute to the poor dewatering …

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  • Angus McFarlane CSIRO - Academia edu

    Jan 01 2006· Polyacrylamide addition whilst strongly facilitating primary dewatering at best played an indifferent role toward improving consolidation of the clay dispersions The shear induced consolidation behavior appears to result from improved floc network restructuring and inter-floc permeability

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  • Carbon-based materials reinforced waste activated sludge

    The dewatering rate the dewatering behavior of various narrow size distributions and the addition of several floc- culants oils and wetting agents surfactants were investigated Gray found that dewatering was improved by each of the above additions and he alludes to the fact that the efficacy of several highly impure oils in dewatering

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  • Wet-end Paper Starches Cargill

    Common problems are less fabric stability wrinkles fabric wear changing dewatering behavior distorted paper profiles increased bearing load broken rolls and torn fabrics With a dial or a mechanical tension gauge such as the Tensiomaster these problems will belong to the past

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  • Effects of Surfactants on the Improvement of Sludge

    If produced on-spec the main advantage of CT NST would be its improved dewatering behavior and rapid release of relatively clear water during the hindered settling and self-weight consolidation while a majority of the fine particles are entrapped within the matrix of its coarser fraction sand

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  • Dewatering Behavior of a Wood-Cellulose Nanofibril

    Request PDF on ResearchGate Improved Dewatering Behavior of Clay Minerals Dispersions Via Interfacial Chemistry and Particle Interactions Optimization Orthokinetic flocculation of clay

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  • SolarPress Press roll covers for the highest dewatering

    GUIDELINES FOR DEWATERING DENSIFYING CONFINED DREDGED MATERIAL 1 Purpose The purpose of this manual is to discuss the major concerns and provide information about design construction operation and manage-ment of containment areas for dredged material wherein the material is dewatered and densified This dewatering is done in order to create

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  • Effects of potassium permanganate conditioning on

    The cleaning process of coals is challenging due to the existence of clay minerals The overall objective of this study is to investigate how the dewatering of coal slurry is impacted by the presence of clay minerals i e kaolinite and montmorillonite Filtration tests were first conducted to investigate the effect of kaolinite and montmorillonite on the dewatering efficiency of coal

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  • Dewatering performance of fiber-reinforced fly ash slurry

    In some cases the reduction in surface tension and the increase in hydrophobicity or a combination of both are able to improve surfactant dewatering Interfacial tension can be reduced in the sludge system by adding CTAB a good dewatering performance is obtained

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  • Geotextile dewatering of flocculated fiber reinforced fly

    behavior of waste clays and sand tailings clay mixtures Bromwell and Oxford 1977 Keshian et al 1977 Martin et al 1977 Bromwell Engineering developed laboratory testing and computer modelling techniques to predict the time rate of consolidation or dewatering of waste clays and

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  • Conditioning and Dewatering Behavior of ATAD Sludges

    Intelligent Filter Press to improve the fine coal dewatering process and the handling of fine coal The product a biomass fine coal mixture can be used in cocombustion for - power production In this project both vacuum and filter press filtration behaviors of biomass fine coal …

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  • Improved dewatering of nickel laterite ore slurries using

    The effects of polymeric additive on papermaking Theodore H Wegner Chemical Engineer USDA Forest Service Forest Products Laboratory One Gifford polyacrylamide had no effect on web behavior during wet-press dewatering Water removal Polyacrylamide did however reduce the web drying rate and sheet burst additives improve the

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  • Cake dewatering of some iron ore industrial products

    The dewatering performance and fractal characteristics of alum sludge from a drinking-water treatment plant were investigated in this study Variations in residual turbidity of supernatant dry solid content DS specific resistance to filtration SRF floc size fractal dimension and zeta potential were analyzed Sludge dewatering efficiency was evaluated by measuring both DS and SRF

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  • TensioMaster Feltest

    Jan 01 2006· Read Improved dewatering behavior of clay minerals dispersions via interfacial chemistry and particle interactions optimization Journal of Colloid and Interface Science on DeepDyve the largest online rental service for scholarly research with thousands of academic publications available at your fingertips

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  • A study of the improvement in dewatering behavior of

    This paper is concerned with studying the dewatering behavior of three samples of iron ore products The objective is to improve the industrial filtration performance by taking into account the laboratory results Mineral samples came from the Iron Ore Quadrangle in the state of Minas Gerais Brazil

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  • Improved dewatering behavior of clay minerals dispersions

    8 · Dewatering Behavior of a Wood-Cellulose Nanofibril Particulate System Hakovirta et al employed a method to improve the dewatering efficiency of pulp furnish through the addition of

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  • Method of dewatering sewage sludge particularly on

    Abstract Wastewater sludge is classified as a difficult dewatering material DDM due to the high cake specific resistance CSR On the other hand fly ash is classified as an easy dewatering material EDM which suggests that it might be able to improve the dewaterability of wastewater sludge

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  • Improved dewatering behavior of clay minerals - DeepDyve

    Similarly the dewatering behavior was improved at higher polymer molecular weight In addition it was found that the flocculation performance was adversely affected by an increase in the degree of polymer hydrolysis which in turn increases the ratio of carboxylic to amide functional groups in the polymer chain

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  • Impact of Clay Minerals on the Dewatering of Coal Slurry

    Effects of potassium permanganate conditioning on dewatering and rheological behavior of pulping activated sludge mechanism and feasibility† Xin Zhang abd Hui Cai abd Jun Shenc and Hui Zhang a The difficulties in sludge dewatering are associated with the high organic content colloidal materials in

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  • GUIDELINES FOR DEWATERING DENSIFYING CONFINED …

    Therefore addition of CBMs is expected to improve WAS electro-dewatering performance for fuel treatment by enhancing sludge conductivity and filterability In this study we evaluated the effects of the three carbon materials AC-0 AC-5 and graphite on sludge electro-dewatering behavior and the flammability of sludge cakes

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  • A study of the improvement in dewatering behavior of

    was to investigate the dewatering behavior of centrifuged oil sand fine tailings for surface deposition using laboratory investigation program and numerical modeling A material with 60 solids e = 1 5 was obtained using a bench-scale centrifuge The fine grained material 52 clay fraction with a moderate water adsorption capacity

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  • Effects of Surfactants on the Improvement of Sludge

    8 · Dewatering Behavior of a Wood-Cellulose Nanofibril Particulate System Hakovirta et al employed a method to improve the dewatering efficiency of pulp furnish through the addition of

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  • Application of Dewatering Technologies in ERA

    Improved dewatering of nickel laterite ore slurries using superabsorbent polymers Article in Advanced Powder Technology · July 2016 with 40 Reads DOI 10 1016 j apt 2016 07 010

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  • Particulates in hydrometallurgy Part III Dewatering

    Feb 01 2005· Abstract The influence of hydrolyzable metal ions Mn II and Ca II adsorption on the surface chemistry particle interactions flocculation and dewatering behavior of kaolinite dispersions has been investigated at pH 7 5 and 10 5

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  • PDF Optimising the dewatering behaviour of clay tailings

    Jun 29 2015· The dewatering performance and fractal characteristics of alum sludge from a drinking-water treatment plant were investigated in this study Variations in residual turbidity of supernatant dry solid content DS specific resistance to filtration SRF floc …

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