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This article covers the importance, classification, characterisation and application of frothers in mineral flotation. Frothers are surfactants that adsorb at the …
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The flotation collectors have a great effect on the flotation process of oxidized coal. ... and aged coal slimes were performed by using Montanol-531, a special coal flotation reagent, at variable ...
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The alcohols (such as MIBC) give relatively large change in gas hold-up with increasing frother concentration but little change in stable froth height in comparison to polyglycols …
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Flotation is a highly efficient method for purifying low-ash coal particles from high-ash fine slimes. Herein, the dispersion effect of trisodium citrate dihydrate (TCD) on the reduction of slime coating on low-ash lean coal particle surface was studied using flotation tests, scanning electron microscope–energy Dispersive Spectroscopy …
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The effect increased with ion valence and a correlation between gas holdup and ionic strength was demonstrated. Gas holdup for salt solutions with ionic strength ca. 0.4, as at the Raglan concentrator, is similar to that of ca. 10 ppm MIBC, which is a typical dosage for this common frother
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The effects of AT and MIBC on cassiterite flotation have rarely been reported, which severely limits our understandings of the role of frother in cassiterite flotation.
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2.1. Effect of Collector Concentration on Flotation Recovery. Xanthates are the salts of xanthic acid (alkyl/aryl dithiocarbonic acid) and are formed through the replacement of two oxygen atoms in carbonic acid by sulfur and replacement of one hydrogen atom by an alkyl/aryl group. 22 They are commonly used as a standard …
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Keeping in view of the characteristics of frother blend at the interface, the effect of the mixture of MIBC and powerful frothers (PEG) in flotation of coal fines were conducted. The blends were prepared at 50 ppm (0.9 × 10 − 4 M) of frother concentration using same dosage of collector and depressant.
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MIBC is a non-ionic surface-active substance that preferentially adsorbs at the liquid–gas interface and has an impact on the bubble size and its velocity. Therefore, MIBC affected the particle-bubble collision by increasing the sliding time between the bubble and the particle in a micro-flotation cell.
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Figure 39, p.72: Effect of frother dose on yield, water recovery and ash content after 5 minutes of flotation, forward flotation of coal sample # 2 + fine silica. Figure 40, p.73: Effect of Diesel oil dosage on yield and ash content in clean product in the presence of 1. Ix 10"2g/L of MIBC, forward flotation of LS-20.
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In this study, the effect of MIBC on C-matter flotation was investigated to understand the role of the frother in bubble and froth formation and on flotation kinetics. MIBC dosages between 30 and ...
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Highlights We study the effect of chain length of xanthate on the flotation performance of a nickel ore. Two methods were used to eliminate the adverse effect of serpentine slimes. When HIC is used, the xanthate with shortest hydrocarbon chain produces the best result. When Calgon is used, the xanthate with longest hydrocarbon …
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DOI: 10.1007/s42461-024-00919-1 Corpus ID: 267084857; The Effect of Methyl Isobutyl Carbinol "MIBC" on the Froth Stability and Flotation Performance of Low-Grade Phosphate Ore
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In this study, gangue only batch flotation tests were performed using fully liberated quartz in a 3.5 L conventional Agitair flotation cell, and the degree of entrainment was assessed at different frother concentrations using Dowfroth 250 and MIBC. Results show that the effect of frothers on the degree of entrainment was the consequence of ...
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In this study, effect of diesel on the froth stability and its anti mechanism in fine coal flotation used MIBC as the frother was investigated. Three-phase and two-phase froth stability tests were first carried out and the negative effect of diesel on froth stability was further explained by the single film drainage and spreading ...
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The molecular structure of the liquid–vapor interfaces of aqueous solutions of alkali metal halides and methyl isobutyl carbinol (MIBC, (CH 3) 2 CHCH 2 COCH 3) is determined by using molecular …
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flotation have been discussed in our previous work (Xu et al., 2022). The promotion effects of air-oversaturated water on the recovery of graphite in flotation without regeants were …
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flotation reagents are used. Another application is separation of malachite and azurite ore using sulfidization flotation. Keywords. Flotation, surfactants, collectors, activators, depressants, metallurgy. 1. INTRODUCTION Froth flotation is a widely used metallurgical technique which is used in different fields like
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Semantic Scholar extracted view of "The Effect of Flotation Reagents Addition (MIBC and PAX) on the Relative Permittivity Value Using 2-Electrode Capacitance Sensor" by D. Haryono et al. Skip to search form Skip to main content Skip to account menu. Semantic Scholar's Logo. Search 220,302,696 papers from all fields of science ...
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This work aims to examine the effect of frother's dosage (MIBC) on the froth stability and flotation performance of low-grade phosphate ore in seawater. This research was motivated by the fact that phosphate flotation operations use a huge amount of …
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2. Lime formulation, synthesis, and production2.1. Calcination. Quicklime (CaO) is produced from the calcination of limestone (CaCO 3), a sedimentary rock of mainly marine sediments containing calcium carbonates in a range of crystal forms.The chemistry and the physical properties of the originating limestone significantly affect the …
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The film lifetime in MIBC and 0.1 M NaCl solutions was extracted from Wang and Yoon (2006). From the figure, the film stability is seen to enhance steadily with increasing MIBC concentration when the system contains 1 ppm PAX. This indicates that the higher MIBC concentration causes slower drainage.
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In this study, flotation tests in seawater were conducted to examine the effect of frother's dosage (MIBC) on the froth stability and flotation performance of low …
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In this study, the effect of MIBC on C-matter flotation was investigated to understand the role of the frother in bubble and froth formation and on flotation kinetics. MIBC dosages between 30 and 150 g/t were used in combination with 500 g/t of kerosene as a collector. The results showed that the recovery and selectivity of C-matter were ...
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For oxidized coal flotation, pine oil is shown to give the better recovery from a selection of common frother reagents among MIBC, pine oil and a polyglycol synthetic frother [17]. …
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In the concentration range used in flotation (10 −4 M, 10 ppm), MIBC offered limited resistance to coalescence with ... this study decoupled the effects of surface hydrophobicity and bubble characteristics modified by NaCl on chalcopyrite flotation and also considered the effect of NaCl on the true floatability by removing the effect of ...
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DOI: 10.1016/j.powtec.2019.12.058 Corpus ID: 212899018; Effect of diesel on the froth stability and its anti mechanism in fine coal flotation used MIBC as the frother @article{Xu2020EffectOD, title={Effect of diesel on the froth stability and its anti mechanism in fine coal flotation used MIBC as the frother}, author={Mengdi …
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On the other hand, the use of raw seawater can adversely affect the flotation of sulfides such as molybdenite (MoS 2 ) and increase lime consumption due to the buffering effect of seawater at high ...
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The molecular structure of the liquid–vapor interfaces of aqueous solutions of alkali metal halides and methyl isobutyl carbinol (MIBC, (CH3)2CHCH2COCH3) is determined by using molecular dynamics simulations with polarizable force fields for the first time. The salts are chlorides, and iodides, some of which are found in raw and partially …
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The use of alkaline pressure oxidation to pretreat refractory gold ore often results in insufficient gold recovery (<60%) in downstream thiosulfate leaching. To improve gold recovery, flotation was …
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