sulfide ores recovery

FLEXICONE processing technology of refractory ores and concentrates. Our latest advance is cyanide-free technology with gold recovery. For the processing of gold-bearing refractory and sulphide ores and concentrates, Flexicone has developed a unique beneficiation technology. The technology includes grinding and a fast process of …

Recovery of gold from ores using bacteria and fungi is becoming increasingly popular due to their easy handling, their quick adaption to metals, and the high …

This special treatment is required for two reasons: first, to liberate gold particles encapsulated in sulfide or arsenic minerals; and, second, to eliminate …

Sulphide mineral flotation. Sulphide ores are the major ores treated for recovery of minerals bearing valuable base metals such as copper, nickel, zinc, etc. in the mining sector for various specialised applications in different fields.

Dissolution of sulfide ores requires oxidative leaching conditions, then ISR can be conducted by applying bacterial leaching, a technology which is established in the copper industry for the treatment of copper sulfide ores in heaps and dumps (Ghorbani et al., 2016; Petersen, 2016).Therefore, the choice of the permeability stimulation approach …

Recovering gold from sulfide refractory gold ore has been an important guarantee for the sustainable development of gold industry, while there are many …

In the previous attempt by Puvvada and Murthy (2000), the maximum amount of gold recovery was reported to be 43% from sulfide ore through the chlorate medium. A later study by Hasab et al. investigated the low recovery of gold from sulfide ores. It was found that it can be related to the passivation of the gold particles due to the formation of ...

Pretreatment is an important process to recover gold from sulfide minerals. Gold-bearing ores ordinarily contain complex or refractory ores of sulfide minerals that interfere with gold recovery efficiency. It is …

Sulfide Ores. Increase recovery and process safety with customized solutions. Sulfide ore flotation solutions from BASF contain novel chemistries which promote a higher recovery while also increasing sustainability and safety. At BASF, we are committed to working with you to develop customized solutions that work for your unique needs.

Zinc is an important base metal required for various applications and is mainly recovered from primary sulfide ores via flotation and metallurgical processes 1.With the rapid development of ...

To recover copper and molybdenum from their porphyry sulfide ores, several process flowsheets are applied, and two of them are shown in Fig. 1.[23, 24] As illustrated in Fig. 1 (a), [23, 25] the two-stage flotation flowsheet is the most widely adopted.In the first stage, copper and molybdenum sulfide concentrates are recovered together.

Thus, the sulfation roasting‒water leaching process developing an efficient and eco-friendly pathway to simultaneous extraction of Ni, Cu, and Co valuable metals from low grade sulfide ores.

Results show that bio-oxidation pretreatment can greatly improve the gold recovery rate of high-sulfur refractory gold concentrate, and at the optimum pH 1.3 in this study, compared with the ...

Pyrite and arsenopyrite are generally the gold-carrying sulfide minerals in refractory gold ores (Ahtiainen et al., 2021, Corrans and Angove, 1991). Refractory gold ore is classified based on its recovery into mildly (80–95 %), moderately (50–80 %), and highly (less than 50 %) refractory ( Asamoah et al., 2021, Mabwe, 2020 ).

A new flowsheet was developed to recover the valuable minerals from oxide or oxide-sulfide ores of lead and zinc. The flowsheet consisted of flotation of sulfide minerals, desliming and sulphidization-flotation of oxide minerals. The corresponding reagent system and techniques to the flowsheet were investigated. Batch and continuous tests show that …

Microbial leaching is an economical method for the recovery of metals from low-grade mineral ores. Two thousand years ago, microbial leaching of copper as copper sulfate from sulfide ores and recovery of metallic copper by 'cementation' was known both in Europe and China (Fossi, 1990): CuSO 4 +Fe 0 →Cu 0 +FeSO 4.

The bioleaching rates reach their highest point in sulfide copper and chalcopyrite with a pulp density of 5% and 10%, respectively. Column flotation experiments of low-grade copper sulfide ores show that the …

Suitable catalytic agents that can control oxido-reduction reaction during bioleaching enhance the metal dissolution and are capable of scaling up which will considerably contribute to enhancing metal recovery from low-grade sulfide ores. 9.10 Controlled Slurry Potential. Metal recovery rate can be enhanced through controlled …

The most commonly used commercial process for metal recovery from oxidized ores is sulfidization flotation, since oxidized minerals after sulfide-treatment have characteristics similar to metal ...

There are two main types of copper ore that are of interest: copper oxide ores and copper sulfide ores. Both ore types can be economically mined, but they are processed in different ways. Copper ...

Introduction. In-situ recovery (ISR) offers the possibility of treating ore bodies with an approach radically different to conventional mining. In ISR metal values can be recovered from the rock by direct dissolution with leaching solutions which are supplied to the ore body and then pumped out for further processing of the dissolved metals (Sinclair …

Mixed oxide and sulfide copper ores are leached following the same process stages as in Figure 4. Also, some sulfidic ores that are too lean to treat by flotation are also leached in heaps or dumps. The recovery of metals from sulfides in this way utilizes bacteria either naturally present or inoculated into the material.

Bio-oxidation of Gold from Refractory Sulfide Ores: A Journey Ahead. ... Through including high-throughput bacterial growth data and better process knowledge of the extraction and recovery approaches, bio-oxidation becomes more economically feasible and efficient. More advancements are necessary to evaluate the wide range of …

About two-thirds of the world's silver resources are contained in base-metal sulfide deposits (Reese, 1991). These ores are beneficiated almost exclusively by flotation. Silver recovery during flotation, however, often is low, especially in the complex, fine-grained ores being developed in Alaska. Despite the economic importance of silver ...

Sulfide ores are crushed and ground in order to liberate nickel minerals by selective flotation, in place of, or in conjunction with magnetic separators. After that, nickel concentrate (containing 6–20% Ni) can be collected. ... nickel–cobalt sulfide ore, and the subsequent recovery by ion exchange (IX) using alkaline glycine solutions in ...

Basically, refractory gold ores (gold recovery efficiency of <50% in average using direct cyanidation) are classified into sulfide, tellurium and carbon ores. Sulfide gold ores account for a large proportion of refractory gold ores, therefore, it is very meaningful to recover gold from sulfide gold ores (Ubaldini and Vegliò, 2000, Saba, 2011 ...

The Congolese Copperbelt contains values sulfide ores that are abandoned or simply unexploited. ... and leaching time on copper and cobalt recovery from a sulfide ore. A representative sample was ...

The new process is reliable, economical, environmentally friendly and promising for recovery industry of the complex mixed sulfide-oxide lead-zinc ores. This study will provide some reference and guidance for researchers working on flotation indexes optimization, and for flotation plants facing the similar problems.