flocculation dewatering clay

Enhanced flocculation and dewatering of clay mineral ...

2007-10-1 · Flocculation with hydrolyzable metal ions and high molecular weight polyacrylamides: non-ionic homopolymer (PAM N), anionic carboxylate (PAM A) and sulphonate substituted (PAM S) copolymers and non-ionic polyethylene oxide (PEO), at different pH values, temperatures and shear rates revealed some useful relationships and optimum conditions for significant enhancement of clay pulp dewaterability.

Clay Dewatering - Clay Flocculation - Settling - Thickening

2018-4-5 · The sand and clay fractions tended to separate, and there were problems with inadequate flocculation of the clay fractions. The effects of shear during the mixing

Enhanced flocculation and dewatering of clay mineral ...

Flocculation with hydrolyzable metal ions and high molecular weight polyacrylamides: non-ionic homopolymer (PAM N), anionic carboxylate (PAM A) and sulphonate substituted (PAM S) copolymers and non-ionic polyethylene oxide (PEO), at different pH values, temperatures and shear rates revealed some useful relationships and optimum conditions for significant enhancement of clay pulp dewaterability.

Flocculation and dewatering - ResearchGate

However, fine particles dewatering poses the greatest challenge, especially for the dewatering of clay minerals. The presence of fine silicate and clay minerals reduces the filtration velocity and ...

Dewatering of Fine Particle Clay Waste with Flocculant

2018-10-11 · For the tests described, the optimum results were achieved when 20 pounds of calcium chloride were added to the waste, followed by flocculation with 0.26 pound per ton of PEO as a 0.005-percent solution. Dewatering of Coal-Clay Waste. In the preparation of coal to produce low-ash material, a waste product containing fine coal and clay

Enhanced flocculation and dewatering of clay mineral ...

Request PDF | Enhanced flocculation and dewatering of clay mineral dispersions | Results emerging from the several studies recently performed to provide fundamental understanding of the interplay ...

Flocculation and dewatering behaviour of smectite ...

2004-3-1 · The polymeric flocculants normally used in industry as dewatering aids for clay mineral dispersions are generally polyacrylamide based (Somasundaran and

The flocculation and de-watering of kimberlite clay slimes ...

1974-3-1 · International Journal of Mineral Processing, 1 (1974) 33-49 Elsevier Scientific Publishing Company, Amsterdam - Printed in The Netherlands THE FLOCCULATION AND DE-WATERING OF KIMBERLITE CLAY SLIMES J .V. O'GORMAN* and J.A. KITCHENER Department of Mining and Mineral Technology, Imperial College, London (Great Britain) (Accepted for publication October 17, 1973)

Improved water recovery: A review of clay-rich tailings ...

2020-3-15 · The surface chemistry and aggregation behaviour of clays in suspension are first discussed, and this is then extended to clay aggregation responses during polymer-induced flocculation, with a view to developing an understanding of how flocculant properties and applied shear can be optimised to enhance dewatering processes.

Dewatering of Fine Particle Clay Waste with Flocculant

2018-10-11 · For the tests described, the optimum results were achieved when 20 pounds of calcium chloride were added to the waste, followed by flocculation with 0.26 pound per ton of PEO as a 0.005-percent solution. Dewatering of Coal-Clay Waste. In the preparation of coal to produce low-ash material, a waste product containing fine coal and clay

Flocculation and dewatering behaviour of smectite ...

2004-3-1 · A comparison of anionic PAM and PEO for the flocculation of a wide variety of clay slurries was made by Scheiner and Wilemon (1987) and for the dewatering of kaolinite dispersions by Mpofu et al. (2003a). It was concluded that, to achieve the same level of dispersion flocculation efficiency and clarification, a lower dosage of PEO was required ...

Flocculation and Dewatering of Montmorillonite

FLOCCULATION AND DEWATERING OF PHOSPHATIC CLAY WASTE AND MONTMORILLONITE CLAYS The amount of PEO solution required to dewater six phosphatic clay wastes from Florida at different PEO solution concen­ trations is shown in table 1. By using equation 1 and data from ta­ ble 1, the emp-irical parame-ters,- R-, n,

Optimizing flocculation and dewatering of clay dispersions ...

Request PDF | Optimizing flocculation and dewatering of clay dispersions via flocculant chemistry, temperature and pulp shear | The influence of high molecular weight polyacrylamide (PAM A, N, and ...

Reversible flocculation and deflocculation of ball clays ...

1983-4-1 · Effects of flocculants on the dewatering of ball clay suspensions containing 10 rnM MgSO4. 177 that the most effective flocculants were PEO and A-140, which were used in the subsequent flocculation experiments. This finding was in agreement with other workers on the flocculation of smectite clay suspensions.

Dewatering of Mineral Waste Using the Flocculant ...

and KMn04, which rendered the clay waste treatable with FIGURE 5.—Small-scale static and trommel screen dewater- ing of phosphate clay waste. Table 1. — Dewatering phosphate-clay waste using hydrosieve and trommel screen combination Discharge, pct solids PEO Conc., pct 0.01 .005 .0025 Dosage, lb/st 1.0 .55 .53 Hydrosieve 10.0 12.1 Trommel ...

Clay Flocculant - Metallurgist & Mineral Processing Engineer

2017-6-13 · The amount of PEO used in the Bureau’s flocculation dewatering operation is calculated to be within FDA approved dosages. A level of 1.5 lb PEO/ton of dry clay solids is normal. The dewatered clay product at a solids content of 40 pct and containing all

Insights into kaolin clay flocculation by cationic tapioca ...

Dried powdered pulverized calcined kaolin clay was supplied by Dry Branched Kaolin (Dry Branch, GA, USA). The average particle size was 6.92 ± 0.01 µm and was determined by using a Malvern Mastersizer 2000. The clay has a specific surface area of 0.786 ± 0.002 m 2 /g. Clay is widely used in flocculation mechanistic investigations , .

Low technology water purification by bentonite clay and ...

Schistosoma mansoni cercariae were removed from clear and turbid water by flocculation with Sudanese bentonite clays, with Moringa oleifera seeds as well as with pure bentonite. The flocculation technique employed corresponds to that used to clarify Nile water in Sudanese villages. Moringa seeds, pure bentonite and one type of bentonite clay were able to reduce the number of cercariae by more ...

EXPERIMENTAL DEPOSITION OF CARBONATE MUD

2014-1-10 · those formed by clay-mineral floccules or sand grains under similar conditions. In light of previous experiments with clay minerals, these results indicate that, of the key controls on mud deposition, flocculation and suspended-sediment concentration ... flocculation, transport, and deposition of carbonate muds.

Dewatering Flocculated Clay with Centrifuge

2018-5-26 · Gravity and centrifugal dewatering tests were performed on flocculated suspensions of a kaolin clay. Polymer was added at a fixed rate of 1.52 mg/L min from a stock solution containing 500 mg/L min of the solid polymer. In situ sedimentation/ consolidation measurements were made in the same tank following the flocculation

Clay Flocculant - Metallurgist & Mineral Processing Engineer

2017-6-13 · The amount of PEO used in the Bureau’s flocculation dewatering operation is calculated to be within FDA approved dosages. A level of 1.5 lb PEO/ton of dry clay solids is normal. The dewatered clay product at a solids content of 40 pct and containing all

Flocculation and dewatering of kaolinite suspensions and ...

presents studies performed on the flocculation and dewatering of kaolinite suspensions (the major clay component in MFT) and Athabasca MFT using a combination of two polymers in series. The first additives used were a low molecular weight (LMW) anionic lignin-based polymer (lignosulfonate) and four LMW cationic cellulose-based polymers (Celquat).

An explanation of flocculation using Lewis acid-base ...

The Bureau of Mines (USBM), US Department of the Interior, has developed a method of dewatering clay slurries based on flocculation by high-molecular-weight polymers and water removal from the formed flocs using a trommel or hydrosieve. The exchange ion on the clays affects their dewaterability. Metal ions in solution and on the exchange sites of smectite clays are known to act as Lewis acids ...

Quantifying the effect of polyacrylamide dosage, Na + and ...

MFT flocculation and dewatering depends on the size of the suspended clay particles, and on the composition and properties of the liquid in which they are dispersed. The effect of wat Quantifying the effect of polyacrylamide dosage, Na + and Ca 2+ concentrations, and clay particle size on the flocculation of mature fine tailings with robust ...

Dewatering of barite clay wastewater by inorganic ...

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-130 and A-100) was compared with coagulants (Al2SO4 18H2O, CaCl2 and FeCl3 6H2O).

Insights into kaolin clay flocculation by cationic tapioca ...

Dried powdered pulverized calcined kaolin clay was supplied by Dry Branched Kaolin (Dry Branch, GA, USA). The average particle size was 6.92 ± 0.01 µm and was determined by using a Malvern Mastersizer 2000. The clay has a specific surface area of 0.786 ± 0.002 m 2 /g. Clay is widely used in flocculation mechanistic investigations , .

Dewatering of dredged slurry by horizontal drain assisted ...

2021-8-3 · Dewatering of dredged slurry by horizontal drain assisted with vacuum and flocculation H. Pu, D. Khoteja, Y. Zhou and Y. Pan Dynamic behaviour difference between high-

Clay Flocculation on Vimeo

Demonstration of the effect of positive cations on suspended clay particles (flocculation). The stronger the cation, the more effective the flocculation.

Clays and Clay Minerals | GeoScienceWorld

As of January 1, 2019, Clays and Clay Minerals has moved to a new platform. Subscribers prior to January 1, 2019 have access to full-text content for 2000-2018. Abstracts only for 1999, citations only from 1975-1998. GeoRef records only prior to that.

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