In a copper‑molybdenum processing plant, copper sulfide concentrate (such as chalcopyrite) is floated together with molybdenite in the first stage. [7] The separation of molybdenite and copper sulfide is achieved in the second stage through flotation. [8] In most scenarios, copper sulfides, such as chalcopyrite, are depressed using a depressant (e.g. …

Flotation is a common mineral processing method used to upgrade copper sulfide ores; in this method, copper sulfide mineral particles are concentrated in froth, and associated gangue minerals are separated as tailings.

xanthate are involved in chalcopyrite flotation, it would be expected that chalcopyrite is as sensitive to cyanide additions as pyrite is. 3. Sulphide as depressant Very stable cupric sulphide (CuS) will occur due to chemisorption of sulphide ions. Oxidation potential of the solution will be lowered when sulphide ion is added.

Flotation process, patented in the year 1906, was origin-ally developed for mineral industry to recover values from high grade tailings of gravity seperation plants. This technology has acclaimed importance as a versatile process for the beneficiation of vast variety of sulphide mine-rals. Due to flexibility of the process and remarkable development taken place in flotation …

Flotation process is the most common beneficiation method of almost all types of minerals. The desirable result of the process is dependent on various factors.

Although the flotation of sulphide ores has been practised and studied for almost 75 years, the mechanisms that govem the interfacial processes that are involved in flotation and flocculation are poorly understood, mainly because of the difficulties of identifying and controlling the surface species, as well as the solution species,

The objectives of this investigation were first to conduct flotation test work on an oxidized PGM ore from the Mimosa mine in Zimbabwe using a sulphide flotation scheme and an oxide flotation scheme using alkyl hydroxamate (AM810), an improved hydroxamate co-collector which has not been tested previously on oxidized PGM ores, and then do a ...

Mechanisms of the action of various flotation reagents, including collectors, activators and depressants, commonly used in sulphide mineral flotation are discussed in terms of the …

fine grinding of complex sulphide ores (15) Another problem to be assessed in complex sulphide ore grinding circuit analysis is the possibility of grinding to full liberation size before flotation, compared to regrinding intermediate concentrates. Various schemes are in use, from

In sulphide ores, the main copper sulphide minerals are chalcopyrite, bornite, chalcocite and carrollite, the latter being the main cobalt-bearing mineral (Dehaine et al., 2021b). Flotation is a common method to treat sulphide ore with, in general, higher recoveries for copper compared to cobalt (Dehaine et al., 2021b).

The present study investigates the propensity of predicting ore grindability characteristics and varying pulp densities through acoustic measurements on the Magotteaux ball mill.

Due to many problems such as pipe blockage, environmental pollution, and the difficulty of recovering precious metals, caused by extensive use of lime, the conventional program using lime (CaO) as the inhibitor and xanthates (e. g., sodium butylxanthate) (BX) as the collector has become increasingly restricted in use, and lime-free flotation processes are …

Here, we investigate the efficacy of a ternary collector mixture consisting of ammonium dibutyl dithiophosphate (ADD), butyl xanthate (BX), and ethyl xanthate (EX) for the selective flotation of ...

Trans. Nonferrous Met. Soc. China 31(2021) 792âˆ'806 Interaction effects of flotation reagents for SAG mill reject of copper sulphide ore using response surface methodology Ali AHMADI, Mojtaba REZAEI, Seyed Mohammad SADEGHIEH Department of Mining Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran Received 25 March …

There are several industrial advantages with a cost and time effective way to evaluate new flocculants in mineral flotation. The main objective of this project was therefore to demonstrate an effective approach to identify potential flocculants for selective flocculation of …

Copper sulfide ores frequently co-occur with pyrite, presenting a significant challenge for their selective separation during beneficiation processes. Despite advancements in flotation technology, there remains a critical need for efficient methods to enhance copper recovery while suppressing pyrite interference, particularly without compromising the …

An efficient flotation process was developed to selectively recover elemental sulfur from a high-sulfur pressure acid leaching residue of zinc sulfide concentrate.

Flotation is a common mineral processing method used to upgrade copper sulfide ores; in this method, copper sulfide mineral particles are concentrated in froth, and associated …

1. Introduction. Copper (Cu) and molybdenum (Mo) have been listed as strategic metals by USA, European union, China, etc., and efficient recovery the metals from the mineral resources is a necessary approach to ensure the safe supply of Cu and Mo (Luo et al., 2021).However, as the increasing demand of Cu and Mo and continuous exploitation of …

Electronic properties of sulfide minerals and floatability. Jianhua Chen, ... Ye Chen, in Electronic Structure and Surfaces of Sulfide Minerals, 2020. 2.6.1 Introduction. Sulfide ore flotation is a complex electrochemical system. Electron transfer not only occurs between the sulfide minerals and flotation reagent molecules, but it also happens among different sulfide minerals.

Bench scale flotation using two different complex sulphide ores showed that chalcopyrite recovery is better in process water than tap water and general depression of chalcopyrite at temperatures lower than 22 o C in either tap water or process water, activation of chalcopyrite

In bulk flotation all of the sulphide minerals are collected and floated off together while the gangue remains unaffected and is rejected as tailing. Non- selective promoters serve …

Experimental studies were conducted on the flotation of low-sulfide copper-nickel ore containing flotation-active magnesium silicates, specifically talc, using organic polymeric anionic reagents ...

The rougher flotation and closed-circuit flotation tests of copper-nickel sulfide ore (1.0 kg) were performed on XFD-63 type flotation machines of different capacities (3.0 L, 1.0 L, obtained from Wuhan Exploration Machinery Co., Ltd.) [5], with mechanically stirring speed of 1610 rpm. The 3.0 L cell was used for rougher and scavenger stages ...

At present, zinc is produced from zinc sulfide minerals which are the primary source of zinc, and it is easy to separate the sulfide minerals from the gangue using conventional flotation techniques. As sulfide ores become depleted with the passage of time, the beneficiation of oxidized zinc ores has assumed great importance in recent years.

In recent years, the processing of mining residues and more importantly flotation tailings have been an alternative way to secure sustainable development and metal supply [[1], [2], [3]].Recycling of mining wastes results in multiple advantages including value metals recovered and environmental remediation [4].Froth flotation is a commonly used technique to …

Comparative Evaluation of Natural and Synthetic Flocculants on Selective Metal Recovery from Low-Grade Iron Ore Slimes ... The role of sodium silicate for enhancing flotation selectivity was studied in the context of a copper sulphide ore. A systematic study was performed with individual mineral species, an artificially designed model ore and a ...

Flotation is a common mineral processing method used to upgrade copper sulfide ores; in this method, copper sulfide mineral particles are concentrated in froth, and associated gangue minerals are ...

This paper investigates the effects of thiol collectors: xanthates, dithiophosphates, dithiocarbamates and mixtures of these on the froth flotation performance obtained with a bornite-rich copper sulphide ore from Okiep Copper Mine with a feed grade of 1.8% copper. Batch flotation tests were used to assess the performance in terms of mass-water recovery, sulphur …

of 3:1 [10]. More recently, it was reported that when using a dithiophosphate collector, 90% of the copper sulphide minerals and 93% of carrollite co uld be recovered from mixed oxide sulphide ore at ambient pH in a laboratory batch flotation experiment. Final concentrate grades after the sulphide flotation stage were 12.2% Cu and 0.38% Co [11].