iron ore filtration flocculants
Cationic starches as flocculants of iron ore tailing slime
The effect of residual flocculants in the circulating water on dewatering of Gol-e-Gohar iron ore Abdolreza Bahmani-Ghaedi A. Hassanzadeh A. Sam Ali Entezari-Zarandi Environmental Science, Engineering
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Filtration of Iron Ore Slime using Synthesized Co-Polymer
The present paper reports study on filtration of iron ore slimes using the co-polymer synthesized by grafting polyacrylamide chains on starch backbone. ... Effect of flocculant type Typical filtration results using different types of flocculants wheri the suspension pH was maintained at 5 and the flocculant dose was 30 ppm showed that the ...
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(PDF) Cake dewatering of some iron ore industrial products …
The filtration performance can potentially be improved by the addition of chemical additives such as filter-aids in the form of flocculants, surfactants, and coagulants [9].
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Recent Achievements in Polymer Bio-Based Flocculants for …
The flocculants, designed for coal slime water treatment, were characterized using the FTIR, XRD and SEM methods. It has been shown that water turbidity was reduced by ~97% and ~94%, while COD removal was ~78 and ~74% in the presence of Fe 3 O 4 -chitosan-cellulose and Fe 3 O 4 -chitosan-biochar, respectively.
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Effect of primary flocculant type on a two-step
The tailings used in this study were iron ore waste tailings originally supplied by ArcelorMittal USA, steel and mining company operating in the USA. The tailings preparation process comprised of a number of steps, the first of which was taking a 45-kg wet sample of +4.0 mm feed size from the waste tailings, and passing it through a …
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Rheological characterization and performance of flocculants in iron ore
The early works of Lien et al. [20] and Rao et al. [21] shows different types of starch used as flocculant that can obtain good values of iron recoveries. Also, other authors have demonstrated the use of polyacrylamide with different anionic degrees obtaining slightly less recovery than starch but still promising results for this flocculant but in the …
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Review of Polymers and Coagulants Used for Flocculation of …
Abstract. Drilling fluids used in the oil industry produce a lot of effluents that require proper treatment before their disposal. Efficient coagulants/flocculants can reduce the bulk of disposed of pollutants into the hydrosphere. Polyacrylamide-based artificial polymers are efficient flocculants for industrial effluents.
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Influence of surfactants on filter cake parameters during …
The influence of certain surfactants on the dewatering of fine iron ore sludge flocculated with anionic flocculants has been investigated in a laboratory-scale vacuum filtration unit. The filtration data have been used in calculating the cake parameters from an integrated form of Darcy's law.
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Challenges and Opportunities of Biocoagulant/Bioflocculant …
The chemical compounds commonly used as coagulants/flocculants include iron salts ... thus, subsequent processes, such as filtration and oxidation, will have a lower load [4,11,55]. Open in a separate window. Figure 4. ... Naves F.L. Extraction and optimization of tannin from the flower of Musa sp. applied to the treatment of iron ore …
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The Effect of Flocculants and Surfactants on the 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 …
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Beneficiation Studies on Alumina-Rich Indian Iron Ore …
Alumina reduction in Rajhara iron ore slimes essentially involves separation of hematite from gibbsite in relatively coarser fraction and from kaolinite in the finer fraction. Selective dispersion flocculation studies on synthetic mixtures clearly indicated that while it was possible to achieve almost perfect separation of hematite from kaolinite using starch and …
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The Effect of Reagents on the Ultrafine Iron Ore Vacuum Filtration
Filtration Behaviour of Iron Ore Slurries -Influence of Flocculants and Surfactants, in AIME -Annual Meeting Preprint, p. 83-513. Development of Empirical Models for the Filtration of Pellet Feed ...
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Effect of flocculant on settling and filtration of iron-ore …
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 …
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Improved dewatering of iron ore fines by the use of …
The overflow is sent to the thickener where the iron ore fines are settled by flocculants and the overflow water is recycled for plant use. Different dewatering mechanisms are deployed by different mineral industries such as pressure filters, belt filters, thickeners, disc filters [5] but none of these techniques are able to reduce the …
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The Effect of Flocculants and Surfactants on the Filtration Dewatering
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 ...
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Dry Stacking of Filtered Iron Ore Tailings: Comparing On …
Therefore, the filtered tailings used herein are termed 80/20 and were generated with moisture content values ranging from 12 to 18%. The grain size distribution of the 80/20 tailings used is highlighted in Fig. 1.Table 1 summarizes the main physical characteristics of the iron ore tailings. According to the Unified Soil Classification System …
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Cationic starches as flocculants of iron ore tailing slime
Abstract. This study aimed to evaluate the use of cross-linked cationic starch and pregelatinized cationic starch as flocculants in the sedimentation of iron ore tailing slime seeking a less toxic and less expensive alternative when compared with the use of polyacrylamide. The characterization of a sample from the slimes thickener's feed ...
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Dewatering of iron ore slurry by a ceramic vacuum disc filter
The overflow is sent to the thickener where the iron ore fines are settled by flocculants and the overflow water is recycled for plant use. ... It was shown that the filtration process from iron ...
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Rheological Characterization and Performance of …
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...
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Biopolymer-based flocculants: a review of recent …
Biopolymer-based flocculants have become a potential substitute for inorganic coagulants and synthetic organic flocculants due to their wide natural reserves, environmental friendliness, easy natural degradation, and high material safety. In recent years, with more and more attention to clean technologies, a lot of researches on the modification and …
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Studies on flocculation characteristics of chromite's ore …
Studies on flocculation characteristics of chromite's ore process tailing: Effect of flocculants ionicity and molecular mass. Author links open overlay ... filtration are included in the process flowsheet to dewater the tailings. ... Also, there are literature available with hetero flocculation of process tailings such as iron ore [7], [18 ...
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Effect of flocculant on settling and filtration of iron-ore …
Filtration test results also reveal that suitable flocculants can improve the dewatering characteristics of the slurry. This paper deals with experimental work to …
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Improving flocculation and dewatering performance of iron …
The tailing of the iron ore beneficiation plant (containing 17% iron) at a mass flow rate of 300–350 t/h in slurry form with 5–8% w/v solids% is usually dewatered in two parallel thickeners (D = 55 m, H = 6.6 m). ... Effect of flocculants injection points on thickeners overflow turbidity (flocculant: 8 g/t; pH = 8.1). ...
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Water Soluble Polymer Flocculants: Synthesis, …
Flocculants with less than 1% charged functional groups are considered as nonionic flocculants. 34 Nonionic flocculants normally have high molecular weights, which helps them flocculate suspended particles through the bridging mechanism. 35 Polyacrylamide is the most important water soluble nonionic flocculant because its monomer, acrylamide ...
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Influence of process variables on the ceramic capillary filtration …
Although ceramic capillary filtration is a novel technology, it is proving rapidly to be an attractive alternative for dewatering slurries in the minerals industry. For instance, it has demonstrated great potential for application to iron ore slurries. However, the current understanding of effects of its variables on the performance of the ...
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Effects of Surfactants on the Improvement of …
Flocculants, given at the fixed dosages, are commonly used in conditioning the physical and chemical properties of sludge to improve …
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Flocculants in iron ore tailings slurry? | ResearchGate
Abrasiveness of iron ore slurries and its relation to the properties of the abrasive particles. View A comparitive [sic] study of the filtration of iron ore concentrate slurries /
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Effect of anionic flocculant on settling rate of iron …
The high molecular weight flocculants, namely, magnafloc (1011) superfloc (N 300) were used for comparative studies. The present paper reports the settling and filtration behaviour of iron...
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The Effect of Polymeric Flocculants on Settling and Filtration …
The Effect of Polymeric Flocculants on Settling and Filtration of Iron Ore Slimes. S. R. Pandey., T. Tripathy., R. P. Bhagat. & R. P. Singh. Pages 49-59. Received …
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The effect of residual flocculants in the circulating water on
The current research work initially presented the impact of flocculant in the circulating water on the dewatering of Gol-e-Gohar iron ore. To this end, the role of four key parameters including solid content, pH, flocculant type, and its dosages were studied on Gol-e-Gohar iron ore thickener. The following results are the main highlights: •
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