— This paper reviews the literature on the recovery of the above mentioned minerals by flotation. The increasing complexity of ore deposits, declining ore grades and higher global demand for copper ...

 — Flotation stands out as a successful and extensively employed method for separating valuable mineral particles from waste rock. The efficiency of this process is subjected to the distinct physicochemical attributes exhibited by various minerals. However, the complex combination of multiple sub-processes within flotation presents challenges …

In this study, the flotation behaviors of chalcopyrite and sphalerite in model samples mimicking copper ores with high Cu/Zn ratios (i.e., the ratio of chalcopyrite/sphalerite = …

 — Copper (Cu) ore is a naturally occurring mineral deposit that contains copper in varying concentrations. It is an important industrial metal that has been used by human civilizations for thousands of years due to its excellent electrical and thermal conductivity, high ductility, and resistance to corrosion. Copper is widely used in various applications, …

ore after sulphidisation showed a copper deportment of 0.1 % cuprite, 0.6 % malachite, 0.8 % chalcopyrite and 84.8 % chrysocolla, suggesting that all oxide copper minerals …

Numerous flotation models have been proposed in the literature. Thirteen of these have been applied to batch flotation data and evaluated with respect to one another using statistical techniques.Flotation tests were carried out on samples of a US porphyry copper ore (Pinto Valley, AZ). The ore was tested using various collector and frother systems to …

 — Moreover, since multiple textures can be present within an orebody, their relative proportion in the ore could affect the overall flotation performance. Therefore, understanding the types of pyrite present, their abundance, and how they affect the flotation behavior of the ore is critical for an efficient depression and possible reclamation of ...

The amount of copper in an ore can vary from 0.4 percent to more than 12 percent. Porphyry copper deposits, in which the copper materials are more or less uniformly scattered throughout the rock, account for the greatest tonnage of metal in the producing areas of the ... In the flotation process, the finely ground ore, mixed with water and ...

 — In this section, we carry out a case study to maximize the ore grade in the copper concentrate and determine the best operating conditions (for example, reagent …

Flotation is widely used to concentrate copper, lead, and zinc minerals, which commonly accompany one another in their ores. Many complex ore mixtures formerly of little value have become major sources of certain metals by means of the flotation process. This article was most recently revised and updated by

 — The efficient utilization of copper-nickel sulfide ores that contain multiple magnesium silicate gangue minerals by flotation is difficulty. To solve this problem, the flotation behavior of a refractory copper sulfide ore with multiple MgO gangue minerals was investigated, and the mechanism was discussed in this study. The results show that the …

 — Porphyry copper deposits, sediment-hosted strata-bound copper deposits, vein deposits, ... One of the major challenges is non-selective polymer adsorption onto mineral particles in a multi-component ore system. ... Significance of exposed grain surface area in coarse particle flotation of low-grade gold ore with the hydrofloattm technology.

Three methods of MCA were introduced to investigate the effects of sandstone copper ore flotation process. The taxonomic development measure with the Euclidean distance dj …

 — A large porphyry copper flotation plant has been simulated using a flotation model developed from first principles using the hydrophobic force as a kinetic parameter (Huang et al., 2022, Gupta et al., 2022).The input to the simulation was the size-by-class liberation matrix (m ij) of a flotation feed, which was essential for predicting the size-by …

DOI: 10.1016/j.mineng.2024.108669 Corpus ID: 268754860; Prediction of multi-stage froth flotation efficiency of complex lead–zinc sulfide ore using an integrated ensemble neural network–random forest model

 — The presence of copper activates sphalerite during the grinding ... In this work, we extend our studies to a real complex sulfide ore with multi-stage flotation. The concentrate grade is inferred with image features and supplied to a mass balance framework for inference of recovery. A robust structure is proposed for multi-stage …

 — The working condition category is mainly determined by the ore properties. In the copper flotation industry site, the ore mainly comes from two mines. In the grinding process, the ore from a single mine or a mixture of ore from two mines is used. Therefore, there are three types of working condition categories in the copper flotation process.

 — This molybdenum flotation circuit, based on 250-500 tons per 24 hours is designed for low-grade molybdenum ore having high-grade streaks and with pyrite-quartz gangue.It is also basically sound for many …

Asghari et al. [27] investigated the improvement of copper recovery in an industrial flotation circuit (Sarcheshmeh copper mine), and stated that about 95% of overall copper lost in final tailing was in the rougher circuit while the rougher flotation recovery of mixed copper ore was 8% less than the sulfide ore.

 — The copper mining industry faces challenges associated with deposits, scarcity of resources, and pressure to reduce environmental impacts. ... to maximize copper recovery and minimize iron recovery. To solve this multi-objective problem, the desirability function was ... "Response Surface Methodology for Copper Flotation Optimization in …

 — A system of multi-channeled downcomers provides a high rate of share, and thus high intensity mixing of gas and slurry introduced into the flotation system. ... Effect of microwave pretreatment on grinding and flotation kinetics of copper complex ore. Int. J. Miner. Metall. Mater., 28 (12) (2021), pp. 1887-1897, 10.1007/s12613-020-2106-0. View ...

 — A mineralogy characterisation technique for copper ore in flotation pulp using deep learning machine vision with optical microscopy ... machine vision and optical microscopy for in-pulp characterisation of mineralogy and particle size distribution for multiple minerals in a copper ore pulp. The methodology was developed on samples …

 — For copper ores with oxidation rates of up to 94%, flotation tests have been performed by sulfidization-xanthate flotation, 2,5-dithiol-1,3,4-thiodiazole flotation, and …

 — Adkins and Pearse (1992), in a study of the flotation of a mixed copper sulphide/oxide ore, showed that a mixture of isopropyl xanthate and dicresyl DTP resulted in enhanced rates and recoveries of copper. Synergistic effects in flotation were also reported by Finch and Smith (1972). They observed that mixtures of surfactants can cause a ...

 — In this study, two new variants of the recurrent neural network (RNN) method were used to predict the copper ore flotation indices, i.e., grade and recovery within different operating conditions. …

Table 1: Grade/recovery performance of a hypothetical copper ore flotation process. Product % Weight % Cu Assay Feed 100 2.09 Concentrate 10 20.0 Tailings 90 0.1 (a) From Table 1, the Ratio of Concentration can be calculated as F/C = 100/10 = 10. If only assays are available, the ratio of concentration equals (20 – 0.1)/(2.09 – 0.1) = 10 ...

 — Porphyry copper ores can produce important byproducts such as molybdenite and free gold. The major copper mineralization is chalcopyrite with small amounts of …

Thermo Fisher Scientific supplies critical equipment for copper mining and bulk ore sorting, ... eliminating issues with multiple scattering so even high percentage solids slurries are measurable without dilution. ... and pH modifiers are essential in copper mining workflows to maximize copper recovery in the froth flotation circuit. They ...

 — The flotation results obtained in high salinity water at pH 8.0 after grinding with forged steel and Hi-Cr steel media as reported in the previous work (Mu and Peng, 2021) are also shown in Fig. 1.When forged steel was used as grinding media, 78.0% chalcopyrite recovery and 39.9% pyrite recovery with a low Cu grade of 4.3% were …

 — The dominant challenge of current copper beneficiation plants is the low recoverability of oxide copper-bearing minerals associated with sulfide type ones. Furthermore, applying commonly used conventional methodologies does not allow the interactional effects of critical parameters in the flotation processes to be investigated, …