Utilizing H2O2 for the selective flotation

DOI: 10.1016/j.seppur.2023.125477 Corpus ID: 264461965; Utilizing H2O2 for the selective flotation separation of chalcopyrite and galena with their surface pre-adsorbed with Isopropyl Ethyl Thiocarbamate

A review on the electrochemistry of galena flotation

Abstract. Galena is the most important lead-containing mineral that has semiconductor properties which can cause electrochemical reactions during flotation. This paper reviews studies of galena electrochemical flotation behavior. The electrochemical mechanisms on galena surfaces of oxidation, collector adsorption and depression are …

Effect of calcium ions and citric acid on the flotation …

The chalcopyrite and galena flotation separation can be realized by using large doses of sodium lignosulfonate. On the premise of using the oxidant H2O2, a small amount of sodium lignosulfonate ...

Selective flotation separation of galena from sphalerite via …

Selective flotation separation of galena from sphalerite via chelation collectors with different nitrogen functional groups | Semantic Scholar. DOI: …

Adding cationic guar gum after collector: A novel investigation …

Introduction. Galena and sphalerite usually coexist closely in polymetallic sulphide ores. The flotation separation of Pb-Zn sulfides has been largely achieved by depressing sphalerite using inorganic depressants, such as ZnSO 4, Na 2 SO 3 and cyanides (Bulatovic and Wyslouzil, 1995). However, these reagents always suffer from a …

Theoretical study of 2-mercaptobenzimidazole derivatives as …

The effects of pH value on the floatability of galena and pyrite by using EMBI, PMBI and BMBI as collectors (as shown in Fig. 2) revealed that the flotation recovery of galena increased with increasing of pH value, while the recoveries of pyrite have the opposite properties.At the beginning, the recovery of galena increases gradually with …

The selective flotation separation of galena from sphalerite …

Request PDF | The selective flotation separation of galena from sphalerite with a novel collector of 5-amyl-1, 2, 4-triazole-3-thione | In this paper, 5-amyl-1,2,4-triazole-3-thione (ATT) was ...

Improving the flotation separation of chalcopyrite from galena …

A method of air oxidation pretreatment at 170 °C was developed for the selective separation of chalcopyrite and galena. Single mineral and artificially mixed mineral flotation experiments indicated that the hydrophobicity of chalcopyrite was greatly reduced, and galena maintained outstanding floatability after pretreatment by high-temperature …

Dual Role of Fe2+ in the Galena Flotation and Influence on …

Therefore, the galena separation efficiency can be significantly improved by controlling the pH and Eh of the flotation pulp . In addition to the collector and …

Flotation Separation of Galena from Pyrite in a Low …

The selective depression performance of welan gum on pyrite was found to effectively enhance the galena/pyrite flotation separation index. Compared with the addition of NaBX alone, the grade of Pb ...

(PDF) Improving separation efficiency of galena …

Separation efficiency of 62.54 % at a residence time of 2.25 min was achieved by AJFC, while separation efficiency of 59.12 % at a …

Effect of calcium ions and citric acid on the flotation …

Using NaOH to adjust pH, dextrin selectively depressed galena while chalcopyrite was floated with a xanthate collector. However, when the pH was adjusted with lime, or when calcium ions were present in the pulp, the flotation of galena was "restored" while chalcopyrite was depressed in an alkaline pH, causing deteriorated flotation …

The role of oxidizer in the flotation separation of chalcopyrite and

The influence of oxidizer hydrogen peroxide (H 2 O 2) on the chalcopyrite and galena flotation separation using sodium lignosulfonate as the depressant was studied and the mechanism of H 2 O 2 enhance depression action of sodium lignosulfonate was discussed in this study. The results show that both chalcopyrite and galena have good …

Selective flotation separation of galena from sphalerite via …

The flotation results showed that collector with more nitrogen atoms (DPTZ) offered better selectivity for the flotation separation of galena from a galena/sphalerite …

The flotation separation of galena and pyrite using …

Different from galena, serpentine has strong depression effect on all the three sizes of pyrite. So the flotation separation of fine grained galena and pyrite can be achieved. A concentrate with Pb grade of 65.09% and recovery of 67.72% can be achieved in the mixed minerals flotation when serpentine was added as depressant.

Investigations on the selective depression of fenugreek …

Artificial mixed minerals flotation results further proved that FG could selectively depress galena flotation, and a concentrate with CuFeS 2 grade of about 86% and recovery of around 96% was obtained from a feed material containing 48.35% CuFeS 2 when 4 mg/L FG was added at pH 8.5. The results of the adsorption, zeta potential, and …

Synthesis of trimethylacetyl thiobenzamide and its flotation …

In this study, TTBA was first introduced as collector for the selective separation of galena from sphalerite. The flotation performance of TTBA on galena and sphalerite was investigated by micro-flotation experiments, and the flotation separation mechanism was studied by zeta potential, FTIR, XPS tests and DFT calculations. 2. …

Effect of particle size on the oxidation and flotation …

The aim of this study was to determine the effect of particle size on the oxidation and flotation behavior of galena particles. Coarse ( -0.074+0.038 mm), intermediate ( -0.038+0.025 mm) and fine ( -0.025 ... The samples were then separated with a centrifuge separator at a rate of 3500 r/min. Finally, the solutions were analysed using a UV/Vis ...

A reagent scheme for galena/sphalerite flotation separation: …

Flotation is the most effective method to separate galena and sphalerite ( Bandini et al., 2001). It uses the difference in the surface hydrophobicity of minerals to …

Separation of galena and chalcopyrite using the difference in …

The galena–chalcopyrite mixture was completely separated via flotation separation under appropriate corrosion acidity, corrosion temperature, and corrosion …

Effect of sodium pyrophosphate on the flotation separation …

In Fig. 1, it is seen that both chalcopyrite and galena are readily floated using ADTP over a pH range of from 2.5 to 10.5.The flotation recovery drops above a pH of 10.5, especially for galena, when the alkaline pH was obtained by addition of NaOH. This agrees with the findings reported in the literature [5], [10].Thiol collectors are powerful for …

Synthesis of trimethylacetyl thiobenzamide and its flotation …

A novel surfactant trimethylacetyl thiobenzamide (TTBA) was synthesized and first conducted as flotation separation collector for galena and sphalerite. The flotation performance of TTBA and traditional collector sodium isobutyl xanthate (SIBX) was investigated by micro-flotation, which displayed that TTBA possessed stronger …

A Novel Surfactant Dibutyl Phosphonate for the Flotation …

DOI: 10.2139/ssrn.4158409 Corpus ID: 250437537; A Novel Surfactant Dibutyl Phosphonate for the Flotation Separation of Chalcopyrite from Galena and Pyrite @article{Jiang2022ANS, title={A Novel Surfactant Dibutyl Phosphonate for the Flotation Separation of Chalcopyrite from Galena and Pyrite}, author={Xu ang and Wanjia …

Flotation separation of galena from sphalerite using …

On the other hand, the floatability of galena was barely affected by HA, and 96.93% galena floated at 400 mg/L HA. The floatability difference was greatly enlarged, which. Conclusion. 1. HA could selectively depress sphalerite but hardly affected the flotation of galena in broad pH range, which could achieve desirable separation. 2.

Enhancing flotation separation of chalcopyrite and galena …

The coexistence of chalcopyrite and galena in deposits with complex mineralogical properties presents a challenge with respect to the use of copper–lead ores in industrial practice [1]. Froth flotation is mainly used for the recovery of chalcopyrite and galena concentrates from ores [2], [3].

The selective flotation separation of galena from sphalerite …

The flotation results of the artificially-mixed minerals shown in Fig. 5 demonstrates that at pH ~8.5 (CaO concentration ~ 0.5 × 10 −4 mol·L −1), the flotation recovery difference between galena and sphalerite was ~43 and 28% respectively for ATT and PAX, which inferred that under weakly alkaline conditions, ATT was a better …

(PDF) Dual Role of Fe2+ in the Galena Flotation and …

To investigate the in fluence of Fe. 2+. on. fl otation behavior of the different particle sizes of galena, the coarse (+0.074 mm), the intermediate ( −0.074 mm to. +0.038 mm), and the fine ...

Selective flotation separation of galena from sphalerite via …

@article{Wang2021SelectiveFS, title={Selective flotation separation of galena from sphalerite via chelation collectors with different nitrogen functional groups}, author={Jinggang Wang and Yuehan Ji and Shaoyi Cheng and Shu Liu and Jian Cao and Pan Chen}, journal={Applied Surface Science}, year={2021}, volume={568}, …

Flotation separation of chalcopyrite from galena by …

However, the floatability of galena decreases rapidly when the pH value is higher than 9. 3.1.2 Flotation of chalcopyrite and galena with HA as depressant The effects of HA on the flotation recoveries of chalcopyrite and galena at pH 6.5 were determined (see Fig. 4). The results indicate that with the increase of HA concentration from 0 to 75 ...

The flotation separation of galena and pyrite using …

The flotation separation of galena and pyrite using serpentine as depressant | Semantic Scholar. DOI: 10.1016/J.POWTEC.2018.09.070. Corpus ID: …

Application and depression mechanism of sodium sulfite on galena …

Additionally, DDTC is more selective to galena flotation than xanthate, so DDTC is usually used as a collector for galena in Pb-Fe separation (Niu et al., 2018, Hu et al., 1992). Pure minerals were used in studying the effect of Na 2 SO 3 on the flotation of galena and pyrite pre-adsorbed with EX. 3.2.1. Micro-flotation experiments

Effect of seawater on flotation separation of galena from …

Results of flotation separation of galena from sphalerite (C DDTC = 60 mg/L, C EDTA = 30/90 mg/L, C SHMP = 60 mg/L, C SS = 60 mg/L, pH = 9.5). In this …

Study on the flotation technology and adsorption mechanism of galena

The flotation result shows that the efficient separation can be achieved with H as selective collector. Galena concentrated with Pb grade of 72.09% and Pb recovery of 50.96% was obtained, and jamesonite concentrated with Sb grade and recovery of 10.89% and 76.67% respectively was obtained as well.

Flotation separation of galena from sphalerite using …

Flotation separation of galena from sphalerite using hyaluronic acid (HA) as an environmental-friendly sphalerite depressant | Semantic Scholar. DOI: …

Flotation separation of sphalerite from galena using eco …

Microflotation experiments revealed that compared with Ester-105, higher flotation recovery of galena (90.75%) with significantly improved flotation selectivity against sphalerite by using MDPE of ...

A novel synthetic polymer depressant for the flotation …

The micro-flotation results showed that DTC-PAA was an effective depressant for galena in the flotation separation from chalcopyrite when using IPETC collector. Their adsorption mechanisms were unravelled by FT-IR, zeta potential, adsorption capacity measurement, XPS and DFT calculations. The results of adsorption capacity …

The flotation separation of galena and pyrite using …

Selective Flotation of Pyrite from Galena Using Chitosan with Different Molecular Weights. Pyrite is a major gangue mineral associated with galena and other valuable minerals, and it is necessary to selectively remove pyrite to upgrade the lead concentrate by froth flotation. In this….

Effect of surface oxidation on the flotation separation of chalcopyrite

Chalcopyrite (CuFeS2) and galena (PbS) are two important non-ferrous metal resources and they are closely related to economic development. ... investigated the influence of mineral oxidation on Cu-Pb separation using green reagent sodium humate as depressant for galena. The flotation tests showed that sodium humate had a poor …