Improving gold flotation selectivity by using new collecting agents

Chanturia, V. A.; Nedosekina, T. V.; Gapchich, A. O.

doi:10.1134/s1062739148060111

Cited by 8 publications

(2 citation statements)

References 3 publications

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“…The results showed that the gold recovery rate is not affected by the pH value and increasing the collector concentration can increase the gold recovery rate to a certain extent. Chanturia et al [6] studied the effect of xanthic acid and a new collector on gold ore flotation performance, and determined the selectivity characteristics of a nitrogen-containing agent and a phosphoruscontaining agent for gold. The results showed that the new optimized reagent mode can improve the gold recovery rate and the gold concentrate grade.…”

Section: Literature Reviewmentioning

confidence: 99%

Multi-Objective Optimization of Forth Flotation Process: An Application in Gold Ore

et al. 2021

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In order to improve production control ability in the gold ore flotation process, the output index in this process was studied. Flotation is an effective gold recovery process. Gold concentrate grade and gold recovery rate are the key output indicators of the flotation process. However, in the existing studies exploring the impact of parameter changes on the output indicators, the control ability of the output indicators is insufficient, and the interaction between variables is inadequately considered. Therefore, a multi-objective optimization model based on response surface methodology and the non-dominated sorting genetic algorithm-II (NSGA-II) is proposed in this paper. Firstly, the experiment was designed based on the Box-Behnken principle. Based on the experimental results, the interaction between variables was analyzed and the response polynomial was fitted. Secondly, a multi-objective optimization model was constructed, and the NSGA-II was used to solve the model. Finally, an example of gold ore flotation was used to verify the effectiveness of the method. The optimal solution was a gold concentrate grade of 75.46 g/t and a gold recovery rate of 85.98%.

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Section: Literature Reviewmentioning

confidence: 99%

Multi-Objective Optimization of Forth Flotation Process: An Application in Gold Ore

et al. 2021

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“…One of the main parameters is the recovery size before flotation [5,6]. The reagent mode also influences the efficiency of the process, the degree of pulp aeration, flotation time, pH of the medium, conditioning, pulp density [7,8], and many others [9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Study of gold ore processing by flotation methods

Федотов

Бурдонов

Novikov

et al. 2022

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The article deals with the studies of gold-bearing ore benefication by flotation methods. The object of the study is a low-sulfide gold-quartz type of ores with the following petrographic composition: quartz – 90 %, quartz-chlorite schists – 10 %. The ore from this deposit consists of the weathering crust rocks including iron-mica rocks with veins and spots of granoblastic quartz. The purpose of the research is to develop an optimal flotation regime for obtaining sulfide gold-bearing concentrate. The influence of ore size, reagent mode, flotation redistribution structure, and flotation time on operations was recorded during the experiment. The paper presents the results of studying the chemical composition of the ore by the method of silicate and optical emission analysis. The flotation process used butyl potassium xanthate as a collector and a combination of pine essential oils as a foaming agent. The Hancock concentration efficiency criterion was determined based on a series of experiments. The following technological indicators of ore processing were identified: gravity concentrate with the gold grade of 1165 g/t with the yield of 0.3 % and the recovery of 73.74 %; flotation concentrate (after purification II) with the gold grade of 68.9 g/t with the yield of 1.52 % and a recovery of 22.05 %. Its silver content was 15.9 g/t. The total gold recovery was 95.79 %, with the yield of 1.82 % and the gold grade of 249.9 g/t. The gold grade in the flotation tailings was 0.19 g/t.

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