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Monday, April 20, 2020 | History

3 edition of Dewatering of mineral waste using the flocculant polyethylene oxide found in the catalog.

Dewatering of mineral waste using the flocculant polyethylene oxide

Bernard J. Scheiner

Dewatering of mineral waste using the flocculant polyethylene oxide

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  • 34 Currently reading

Published by U.S. Dept. of the Interior, Bureau of Mines in [Avondale, MD] .
Written in English

    Subjects:
  • Clay wastes -- Dewatering.,
  • Hydrometallurgy -- Waste disposal.,
  • Polyethylene oxide.

  • Edition Notes

    Bibliography: p. 18.

    Statementby B.J. Scheiner, Annie G. Smelley, and D.A. Stanley.
    SeriesBulletin ;, 681, Bulletin (United States. Bureau of Mines) ;, 681.
    ContributionsSmelley, Annie G., Stanley, D. A.
    Classifications
    LC ClassificationsTD899.M43 S34 1985
    The Physical Object
    Pagination18 p. :
    Number of Pages18
    ID Numbers
    Open LibraryOL2663166M
    LC Control Number85600201

    Using flocculants to help remove sediment from stormwater runoff at construction sites is a promising but complex process. While no chemical was effective on all soils, three chemicals were broadly effective on a wide range of soils: ferric chloride, a metal saltFile Size: KB.   Flocculation, as a result of the interaction between non-ionic polyacrylamide polymer (PAM-N) and kaolin surface in aqueous suspension, has been discussed both in the absence and in the presence of surfactants namely, cationic cetyl trimethyl ammonium bromide (CTAB), anionic sodium dodecyl sulphate (SDS) and non-ionic TX The results of .   1. Water Res. May 15;47(8) doi: / Epub Feb Synthesis, characterization and application of a novel starch-based flocculant with high flocculation and dewatering by:


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Dewatering of mineral waste using the flocculant polyethylene oxide by Bernard J. Scheiner Download PDF EPUB FB2

DEWATERING OF MINERAL WASTE USING THE FLOCCULANT POLYETHYLENE OXIDE By B. Scheiner,1 Annie G. Smelley,2 and D.A. Stanley2. ABSTRACT This bulletin summarizes the results of Bureau of Mines investigations of a tech-nique for dewatering clay waste that consists of flocculation with polyethylene oxide (PEO) followed by screening of the resulting by: 9.

From Abstract: "This bulletin summarizes the results of Bureau of Mines investigations of a technique for dewatering clay waste that consists of flocculation with polyethylene oxide (PEO)followed by screening of the resulting flocs.

Results of the laboratory tests and small and large scale field tests are described."Cited by: 9. Get this from a library. Dewatering of mineral waste using the flocculant polyethylene oxide.

[Bernard J Scheiner; Annie G Smelley; D A Stanley]. NIOSHTIC-2 Publications Search - - Dewatering of Mineral Waste Using the Flocculant Polyethylene Oxide.

This bulletin summarizes the results of Bureau of Mines investigations of a technique for dewatering clay waste that consists of flocculation with polyethylene oxide (peo) followed by screening of the resulting flocs. The technique utilizes a flocculant, polyethylene oxide (PEO), that forms strong stable flocs that can be dewatered rapidly on static and/or rotary screens.

Infield tests, phosphate clay waste has been dewatered from a nominal % Cited by: Dewatering of mineral waste using the flocculant polyethylene oxide book. The Bureau of Mines, U.S. Department of the Interior, has developed a novel method of flocculation dewatering of phosphatic clay wastes using polyethylene oxide as the flocculant.

Research was conducted to determine whether ethylene oxide gas was present in the air in the vicinity of disposed waste materials which had been flocculated with polyethylene oxide.

Nonionic polyethylene oxide (PEO) and anionic polyacrylamide (PAM) flocculation of kaolinite dispersions has been investigated at pH in the temperature range 20–60 °C. The surface chemistry (zeta potential), particle interactions (shear yield stress), and dewatering behavior were also by: polyethylene oxide on each mineral to explain its overall flocculation characteristics.

The oxides studied vary significantly in their interfacial properties such as point of zero charge (pzc) and degree of hydration. Flocculation of oxides using polyethylene oxide was investigated. Polyethylene oxide adsorbed strongly Dewatering of mineral waste using the flocculant polyethylene oxide book and flocculated sodium.

POE can be used as a flocculant in some applications. The term "thickening" in the mining industry is equivalent to "dewatering" in equipment called thickeners. Which is a tank with a mechanism inside. The thickener you mentioned is not the same. If you want a substance that change the flow properties; most "flocculants" will do.

Flocculant used used for all kinds of mineral processing. In most mineral processing processes, flocculants are used for settling and centrifugation. CHINAFLOC - PAM series products used in mineral processing industry, could be selected according to the using conditions or produce according to customer's specific requirements.

roads, tailings piles, waste dumps, and open areas on Dewatering of mineral waste using the flocculant polyethylene oxide book sites. The polymer is mixed and dissolved in water and then sprayed directly on the road or other ground surface (Figure Dewatering of mineral waste using the flocculant polyethylene oxide book.

A comparison of construction site road dust before and after polymer flocculation is shown in Figures 12 and Using a flocculantFile Size: 1MB. The shear-sensitive polyethylene oxide flocculant was used to improve dewatering behaviour of smectite and kaolinite clay slurries, leading to dramatic increase (>.

high molecular polymers (HMP) as flocculants is being reported in this paper. The water samples were treated with common conventional dewatering methods such as the use of lime and bentonite. High molecular polymers such as Nalco ® and PEO ® were also used to dewater these waste effluents.

With the use of g/l PEO, g/l NalcoFile Size: KB. The shear-sensitive polyethylene oxide flocculant was used to improve dewatering behaviour of smectite and kaolinite clay slurries, leading to dramatic increase (> 15 wt.% solid) in sediment consolidation and concomitant high water recovery in laboratory tests [10,19].

The method consists of mixing the waste slurry with a flocculant and dewatering the floc on static hydrosieve and/or rotary trommel screens.

Laboratory tests on coal-clay waste slurries using polyethylene oxide were successful, and so small-scale continuous tests were carried out. Both series of tests are described. The effect of shear on dewatering behaviour and particle interactions of Na-exchanged smectite and kaolinite clay dispersions has been investigated at pHusing hydrolysable Ca(II) and Mn(II) ions as coagulants and high molecular weight anionic and non-ionic polyacrylamide (PAM A and PAM N, respectively) and polyethylene oxide (PEO) flocculants Cited by: TREATMENT OF DOMESTIC WASTE WATER USING NATURAL FLOCCULANTS Narmadha D1* and Mary Selvam Kavitha V J1 Research Paper Wastewater generated from wastewater treatment plant contains odors some non pathogens, fecal Coliforms, fungus etc., and chemicals such as phenols, nitrate, chloride etc., in addition to usual constituents such as urine and by: 5.

This work is focused on dewatering of barite-containing clay waste from a barite beneficiation plant by coagulation and flocculation to enhance the dewatering rate and recycling of process water.

A flocculation performance of co-polymers (Superfloc A and A) was compared with coagulants (Al2SO4 18H2O, CaCl2 and FeCl3 6H2O). Abstract. Polyethylene oxide (PEO) is an efficient flocculant for various minerals including coal, quartz and phyllosilicates.

However, it is rarely used in coal flotation process. In this research, the flotation of coal with the addition of PEO was investigated. It was found that PEO could worsen the flotation performance if it was used by: 6. USA1 US16/, USA USA1 US A1 US A1 US A1 US A US A US A US A1 US A1 US A1 Authority US United States Prior art keywords process poly tailings ethylene oxide mineral suspension Prior art Cited by: 1.

A method of flocculation dewatering of phosphatic clay wastes using polyethylene oxide as the flocculant is reported. Research was conducted to determine whether ethylene oxide gas was present in the air in the vicinity of disposed waste materials which had been flocculated with polyethylene oxide.

WOA1 PCT/US/ USW WOA1 WO A1 WO A1 WO A1 US W US W US W WO A1 WO A1 WO A1 Authority WO WIPO (PCT) Prior art keywords ch ethylene oxide copolymer poly catalyst Prior art date Cited by: 2. Dewatering: Flocculants and Coagulants Neo Solutions, Inc. supplies water soluble polymers for the dredging, hard rock mining, coal, and water treatment industries.

Flocculants and coagulants are used in these industries in regards to solid – liquid separations, dewatering, sludge thickening, and solidification. cussed with respect to improvements in current dewatering processes used in the minerals industry.

Keywords: kaolinite, polyethylene oxide, flocculation, elastic modulus, vane rheometry 1. Introduction The rheology of flocculated mineral tailings has impor-tant implications for sustainable mineral processing.

It pro. "The Bureau of Mines is investigating a dewatering technique for coal- clay waste that uses a flocculant, polyethylene oxide (peo). This flocculant forms strong stable flocs that can be dewatered on a static screen.

A field test unit (ftu) using this Cited by: 2. filtration or centrifugation of a mineral slurry: 25 to grams of flocculant per ton of solid, in the case of clarification of an organic effluent: 10 to ppm coagulant – to 2 ppm flocculant. Flocculants. Liquid and Dry flocculants for raw, process and waste water treatment.

Aries flocculants are designed to improve clarification, flotation and solids dewatering. NSF, FDA and GRAS products available. Sludge Conditioners. Polymers, flocculants, body feeds and Sahara Process help the dewatering of sludges to achieve highest possible.

The present invention relates to a method of dewatering an aqueous mineral suspension comprising introducing into the suspension a flocculating system comprising a mixture of polyethylene glycol and polyethylene oxide polymers, in particular a mixture of one or more low molecular mass polyethylene glycol with one or more high molecular mass polyethylene by: Provides more than you really want to know about polymers, water chemicals and equipment for potable, waste and process water in industrial, municipal and mining treatment systems.

Over formulations are available plus custom blending. Tramfloc manufactures flocculants, coagulants, water soluble polymers, emulsion breakers, dewatering agents, tailings and. Flocculation or floculation is a significant process widely utilized in water treatment operations, including purification of drinking water, sewage water treatment, storm water treatment and treatment of various other industrial wastewater streams.

Though often used interchangeably with coagulation, it is in fact a distinct process that. Dewatering Wet Tailings Generated From Oil Sands Extraction. at the University of Alberta proposed the project “Dewatering Wet Tailings Generated from Oil Sands Extraction” for ecoEII funding and was awarded $ especially high molecular weight anionic polyacrylamide followed by high molecular weight non‐ionic polyethylene oxide.

After conditioning, flocculant solution (25 ml) in a burette was added slowly over 4 minutes at a constant rate to the mixing tank and the mixture was stirred at rpm to 22 provide adequate mixing for polymer solution (polyacrylamide or polyethylene oxide flocculant) and mineral Author: Moreno Chavez, Jose Ricardo.

Stanford Libraries' official online search tool for books, media, journals, databases, Dewatering of mineral waste using the flocculant polyethylene oxide [] Scheiner, Bernard J. Dewatering of mineral waste using the flocculant polyethylene oxide [electronic resource] [] Scheiner, Bernard J.

International Search Report and Written Opinion for co-pending PCT application PCT/US 14/ dated Scheiner et al., “Dewatering of mineral waste using the flocculant polyethylene oxide,” Bulletin/U.S. Dept. of the Interior, Bureau of Mines; ().Cited by: 2. The effect of flocculant solution transport and addition conditions on feedwell performance in gravity thickeners, Int.

Mineral Process Pawlik, M., Laskowski, J.S. Ansari, A., Effect of carboxymethyl cellulose and ionic strength on stability of mineral suspensions in potash ore flotation systems, J. Coll. Interf. considerable research on dewatering slurries containing fine particles.

During these investigations, PEO was observed to form strong flocs in 1Scheiner, B. J., A. Smelley, and D. Stanley. Mineral Waste USing the Flocculant Polyethylene Oxide.18 pp. Dewatering of BuMines B Mature fine tailings need to be dewatered to reduce the environmental impact caused by oil sands extraction.

Polymer flocculants are commonly used to accelerate this process. In this work, we modified chitosan, a naturally occurring biopolymer, with 3-chlorohydroxypropyltrimethylammonium chloride (Chito-CTA) and also grafted polyacrylamide to Cited by: 6.

formerly used as flocculants (Kleber ). Inthe first non-toxic and completely synthetic cationic (positively charged) organic polymer was introduced and accepted by the U.S. Public Health Service for treatment of municipal water supplies (Kleber ).

Since then, a wide range of polymers has been developed for use in. Flotation and Flocculation deals with cutting-edge research in the science and engineering of two of the world’s key separation processes.

Flotation and flocculation underpin the key material supply chains for technologies that are central to minerals, fuel cells, ceramics, telecommunications, waste removal/recycling processes and many other File Size: 1MB. Abstract: The present invention relates to a method of dewatering an aqueous mineral suspension comprising introducing into the suspension a flocculating system comprising a mixture of polyethylene oxide polymers, in particular a mixture of one or more high molecular weight polyethylene oxide polymer and one or more ultra high molecular weight.

Similar to Pdf AN Polyelectrolyte Flocculant AA in Water Treatment and Mining. Description: Blufloc AA is Anionic Polyacrylamide of high molecular weight flocculant used for water treatment, paper, sludge dewatering, sugar application, as well as the drilling field.figures 1 effect of high ph on pqliovirus 1 (lsc) in flocculated ( mg/1 cacoh)2), download pdf filtered secondary effluents at 25°c 10 2 solubility diagram for magnesium in water at atmospheric conditions, total carbonate» 10~% 13 3 temperature influence on magnesium solubility 15 4 effect of ph on mobility for the indicated coagulant dosages ' 17 5 solubility of mgc03»xh20 as .Ebook further aspects, the invention pertains to a method for performing flocculation on a 25 waste stream ebook a flocculant composition comprising a polymer blend of a polyethylene oxide polymer and a polyacrylamide, wherein the flocculant composition has a concentration of polyethylene oxide from about 35 weight percent to about 85 weight.