recent study on smithsonite benificiation by flotation

The flotation recovery of smithsonite as a function of the NaIX concentration in the absence and presence of different ammonium ions concentrations with 1 × 10 −3 M Na 2 S·9H 2 O as a sulfurizing agent and 1 × 10 −3 M CuSO 4 ·5H 2 O as an activator is shown in Fig. 2.The flotation recovery of smithsonite with 1 × 10 −3 M Na 2 S·9H 2 O …

An example of industrial production is the flotation of bastnaesite from Mountain Pass ores. 61 In a flotation experiment of bastnaesite using sodium oleate, the maximum floatability occurred at pH 9, 73 while another study reported that the optimum pH value ranged from 4 to 8. 74 These different results may be due to differences in the …

A new and effective activation method for the sulfidization flotation of smithsonite is therefore required; however, the development of such a method has proved challenging. In this study, the effect of lead ions on the sulfidization flotation of smithsonite was determined by flotation experiments using sodium butyl xanthate …

Microflotation studies. Fig. 1 shows the flotation recoveries of smithsonite, calcite and quartz as a function of pH with 500 g/t Armac C and oleate collectors. The flotation of smithsonite with Armac C commences at pH 8. A rise in pH from 8 to 11.5 improves flotation and at an optimum pH of about 11 smithsonite recovery is 82%.

Shi and co-workers [20] used anionic collector for flotation of smithsonite. According to their results, smithsonite showed high floatability using sodium oleate as collector between pH 7.0 and 8.0. By increasing pH, smithsonite flotation recovery decreased from 80% to about 30% at pH 9.5 [20].

Request PDF | Contribution of ammonium ions to sulfidation-flotation of smithsonite | Sulfidation-flotation is commonly performed to recover base metal oxide ores. Sulfidation could become the key ...

Fig. 2 shows the flotation recovery of smithsonite as a function of NaIX concentration in the absence or presence of different sodium sulfosalicylate concentrations using 1920 g/t Na 2 S·9H 2 O as a sulfidizing agent. The flotation recovery of smithsonite with 1920 g/t Na 2 S·9H 2 O as a sulfidizing agent was 17.39% at 29.76 g/t NaIX …

This study validated the effectiveness of HEDP in separating smithsonite from calcite by flotation using sodium oleate (NaOL) as the collector, and obtained a 70% recovery difference in a single mineral flotation. Artificial mixed mineral flotation obtained a concentrate with a grade of 44% and a recovery of more than 80%.

The flotation recovery of smithsonite as a function of ODA dosage at various dissolved oxygen concentrations at pH 9.5 using 5 × 10 −4 mol/L Na 2 S as the sulfidization agent is presented in Fig. 2.Without sulfidization, even if a large amount of collector was added, the recovery of smithsonite was still less than 45 %, which …

Beneficiation of zinc from low-grade oxidized zinc ores has become the focus of recent studies. Sulfidation is an important process to recover zinc from oxidized zinc ores in flotation.Although some studies have reported on the sulfidation-flotation of smithsonite, the effect of sulfide ions on sulfide film thickness remains unknown when …

When SG was added into the flotation system, as shown in Fig. 4 (a), the floatability of smithsonite was maintained at a high level, especially under the optimal pH (pH=9–10) for smithsonite flotation. On the other hand, the presence of SG caused a sharp decrease in calcite recovery, with less than 10% of calcite floated at pH> 9, …

At the mixture ratio of Armac C:Armac T, 1:6, the collectors' consumption are decreased significantly and an optimal concentrate with 94.4% recovery and 42.3% Zn grade is …

Dolomite, a prominent calcium-bearing gangue mineral found in carbonate-type zinc oxide ores, poses a significant challenge for effective flotation separation alongside smithsonite due to their highly similar surface properties. The present study explores the potential of 2-(4,4-dimethylpentan-2-yl)-5,7,7-trimethyloctanoic acid (2 …

A mixture of amines and xanthates can also be used as a mixed collector for smithsonite flotation [33]. A new line of collectors [36] ... Physicochemical studies of smithsonite flotation using mixed anionic/cationic collector. Miner Eng, 20 (2007), pp. 621-624. View PDF View article View in Scopus Google Scholar

The Flotation Separation Mechanism of Smithsonite from Calcite and Dolomite with Combined Collectors. by. Xiangxiang Chen. 1,2,†, Junzhi Bai. 3,†, …

All tested amino acids including Trp, Phe, Gly, Ser, and Leu significantly improved the floatability of smithsonite. Under weak alkaline conditions, the flotation recovery of smithsonite was elevated from 36.7 % to 95.7 % with the presence of Trp (1.5 mol/L), achieving the best activation effect on smithsonite flotation. Mechanism studies

... Their small hydration ion radius enables them to act on the surface of smithsonite. Many researchers have studied the effect of Ca 2+ on the flotation of …

Flotation tests indicated that calcite flotation was significantly depressed, whereas the smithsonite flotation was barely affected. Zeta potential analysis showed that SP adsorbed stronger on ...

In this study, guar gum was successfully employed as depressant for calcite during the smithsonite flotation, and its function mechanism were studied by micro flotation, and X-ray photoelectron ...

Flotation Study of Smithsonite. The results with addition of ethylenediamine as activator on micro-flotation recovery rate of smithsonite was given in Fig. 2.It showed that the optimum concentration of ethylenediamine was 6 × 10 −3 mol/L, and the corresponding recovery rate was 91.07% with dodecylamine-hydrochloride being …

The flotation studies of the ore containing ~ 38% Fe showed that at an Aliquat-336 concentration of 8.26×10 −5 M; 64.1% of Fe with 60.3% Fe recovery could be achieved at slightly alkaline pH. Hydrogen bonding and electrostatic attraction between Aliquat-336 and quartz were found to be responsible for the collector–mineral attachment.

Flotation results using oleic acid revealed that the maximum recovery of 90% occurs at pH 9 and 500 g/t oleic acid. Also, the quartz and calcite recoveries reached 26% and 87%, respectively, in ...

The results correspond well with flotation studies. This observation indicates that increase of S concentration in the solution can promote S adsorption onto the smithsonite surface, which may facilitate smithsonite flotation. 3.3. Characterization of zeta potential on smithsonite surface. Smithsonite is a semi-soluble salt mineral of …

This investigation advances a novel mechanism for comprehending the impact of the surface dissolution processes on the flotation behaviour of smithsonite of …

Compared with direct flotation using only xanthate, presulfidization can improve the floatability of a zinc oxide mineral, but ideal flotation recovery is still difficult to achieve. In a previous study by this group, the maximum flotation recovery of smithsonite did not exceed 60 % when collection by xanthate after sulfidization was used [20 ...

The flotation performance of smithsonite as a function of NaAX concentrations was examined to compare the variation tendency of floatability under different activation conditions, and the results are shown in Fig. 1.The floatability of smithsonite progressively increased with an increase in the initial xanthate …

Flotation reagents are significant for modifying the interfacial characteristics of mineral grains to achieve the effective separation of minerals. Since the 1960s, when quantum chemistry was first introduced into the study of flotation reagents, many achievements have been made, although some controversial topics remain. The …

The effects of various cationic collectors are shown in Fig. 2.In the flotation with Armac C, with 500 g/t sodium sulphide at pH 11, increasing Armac C concentration increases smithsonite recovery rapidly to 92% and after which it decreased.This reduction could be attributed to the depression of smithsonite due to the low pulp potential …

Flotation of smithsonite from tailing coming from a cerussite flotation circuit was investigated using Armac C and Armac T as alkyl amine acetate collectors.

The mechanism and flotation performance of HAA during smithsonite flotation was investigated by total organic carbon (TOC) content studies, zeta potential measurements, Fourier-transform infrared ...

Under weak alkaline conditions, the flotation recovery of smithsonite was elevated from 36.7 % to 95.7 % with the presence of Trp (1.5 mol/L), achieving the best activation effect on smithsonite flotation. Mechanism studies revealed that amino acids reacted vigorously with Zn atoms on the surface of smithsonite with a reaction energy of −498. ...

According to these experimental results, it can be concluded that the appropriate pH for the flotation of smithsonite is 8–10 and that the recoveries achieved with DTA and DDA can exceed 93%. Download : Download high-res image (158KB) Download : Download full-size image; Fig. 1. Effect of pH on flotation of smithsonite (c …

Smithsonite, dolomite, and calcite are carbonate minerals. The crystal structures and spatial distribution characteristics of their common surface metal sites are similar, leading to difficulty in the flotation separation of smithsonite from these carbonate gangues. In this paper, the floatability of smithsonite, dolomite, and calcite in sodium …