Results 191 to 200 of about 889,735 (223)

Coagulation and Flocculation Study of Iron Ore Fines

Separation Science and Technology, 1999
A comparative study of the flocculation and coagulation response of an iron ore fines suspension has been carried out, and the extent of flocculation has been assessed by measurement of electrophoretic mobility, supernatant clarity, and settling rate. Of the several commercial flocculants and polyelectrolyte studied, the combination of medium molecular
BIMAL SINGH, L. BESRA, A. PRASAD
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Preparation of Iron-Doped Titania from Flocculated Sludge with Iron-Titanium Composite Coagulant

Journal of Nanoscience and Nanotechnology, 2013
The main drawback of flocculation process with dye wastewater is the large amount of unrecyclable sludge which needs disposal. A novel process using Ti-salt flocculation to purify wastewater was developed to produced sludge that can be calcined to produce titania.
Jong Beom, Kim, Ki Won, Lee, Se Min, Park, Ho Kyong, Shon, Mohammad, Shahid, Ibrahim, El Saliby, Woong Eui, Lee, Geon-Joong, Kim, Jong-Ho, Kim   +8 more
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Photochemical Origins of Iron Flocculation in Acid Mine Drainage

Environmental Science & Technology
Acid mine drainage (AMD) raises a global environmental concern impacting the iron cycle. Although the formation of Fe(III) minerals in AMD-impacted waters has previously been reported to be regulated by biological processes, the role of abiotic processes remains largely unknown.
Huanxin Ma, Shishu Zhu, Ziyuan Huang, Wenxiao Zheng, Chengshuai Liu, Fangyuan Meng, Jeng-Lung Chen, Yu-Jung Lin, Zhi Dang, Chunhua Feng   +9 more
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Characterization and Beneficiation of Iron Ore Tailings by Selective Flocculation

Transactions of the Indian Institute of Metals, 2015
In the present paper, an attempt has been made to beneficiate iron ore tailings by selective flocculation using guar gum and starch as flocculants along with sodium hexametaphosphate (SHMP) as the dispersant. The mineralogical studies carried out initially indicated the presence of hematite and goethite as major iron bearing mineral phases along with ...
Rakesh Kumar, N. R. Mandre
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Magnetic seeding flocculation of weakly magnetic iron minerals

International Journal of Mineral Processing, 1992
Abstract Magnetic seeding flocculation (MSF) has been proven as a successful pretreatment for High Gradient Magnetic Separation (HGMS) of weakly magnetic, finely-sized oxidized iron minerals such as specularite, limonite, and siderite. The utilization of an anionic polymer with an optimal molecular weight and degree of hydrolysis, sodium silicate ...
Q.Y. Song, F. Xu, S.C. Tsai
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Photochemical flocculation of terrestrial dissolved organic matter and iron

Geochimica et Cosmochimica Acta, 2013
Abstract Dissolved organic matter (DOM) rich water samples (Great Dismal Swamp, Virginia) were 0.1-μm filtered and UV-irradiated in a solar simulator for 30 days. During the irradiation, pH increased, particulate organic matter (POM) and particulate iron formed.
John R. Helms, Jingdong Mao, Klaus Schmidt-Rohr, Hussain Abdulla, Kenneth Mopper   +4 more
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Selective flocculation applied to Barsuan iron ore tailings

International Journal of Mineral Processing, 1985
Abstract Experiments have shown that it is possible to obtain a concentrate containing 65% iron, 1.8% alumina and 1.4% silica with an iron recovery of 80% from the tailings of Barsuan iron ore plant containing 52.5% iron, 7.4% alumina and 7.8% silica through selective flocculation employing starch.
K. Hanumantha Rao, K.S. Narasimhan
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Effect of flocculant on settling and filtration of iron-ore sludge

Mining, Metallurgy & Exploration, 1996
This paper deals with experimental work to improve the settling and filtration characteristics of an industrial sludge from an iron-ore mine using synthetic polymeric flocculants. The experimental work consisted of the characterization and evaluation of suitable flocculants to enhance settling and filtration rates. The optimum dosage of the flocculants
L. Besra, B. P. Singh, P. S. R. Reddy, D. K. Sengupta, S. K. Bhoumik   +4 more
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The Effect of Polymeric Flocculants on Settling and Filtration of Iron Ore Slimes

International Journal of Polymeric Materials, 2000
Abstract During the wet processing of iron ores, a substantial amount of fine particles known as slimes are generated in downstream which need to be recovered effectively for their usage and beneficiation. Besides water from slime ponds overflow remains contaminated with very fine particles which are difficult to settle and cause environmental ...
S. R. Pandey, T. Tripathy, R. P. Bhagat, R. P. Singh   +3 more
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Role of water chemistry in the selective flocculation and dispersion of iron ore

Mining, Metallurgy & Exploration, 2015
Fine-grained hematite ore can be concentrated by the process of selective flocculation and dispersion, which relies on proper reagent selection and control of water chemistry. While many previous studies have been performed analyzing the effects of different reagents on this process in a laboratory environment, this paper focuses on investigating the ...
H. J. Haselhuhn, S. K. Kawatra
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