Mine tailings deposits are often overlooked by the industry, posing significant environmental challenges due to chemical hazards and inadequate maintenance. Nevertheless, such mineral deposits hold considerable economic potential for processing, and the adoption of innovative technologies may also address critical chemical and …
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Abstract This research aimed at recovering metals retained in the tailings from the flotation of copper (Cu) and cobalt (Co) ores conducted at the New Concentrator in Kipushi (NCK). Metals retention in the tailings (0.73% Cu and 0.37% Co) increased due to the removal of the gravity separation section from the processing circuit together with …
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Dry magnetic separation was subjected to copper flotation tailings to separate ferromagnetic metals (Fe and Ni) from diamagnetic Al particles and the process achieved a recovery of around 99%. The ...
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An efficient copper recovery process (total copper recovery of 86.2%) is proposed for the utilization of concentrate of flotation tailings as one of the new copper …
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Copper processing is a complicated process that begins with mining of the ore (less than 1% copper) and ends with sheets of 99.99% pure copper called cathodes, which will ultimately be made into products for …
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Thin-layer heap bioleaching of copper flotation tailings containing high levels of fine grains was carried out by mixed cultures on a small scale over a period of 210 d. Lump ores as a framework were loaded at the bottom of the ore heap. The overall copper leaching rates of tailings and lump ores were 57.10wt% and 65.52wt%, …
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The purpose of this study is to identify the physical, mineralogical, and electrochemical properties of copper flotation tailings as well as to investigate how polymer type, dose, suspension pH, and mixing circumstances affect flocculation.
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Request PDF | Improving Flocculation Performance of Copper Flotation Tailings by Conventional and New Technology Polymers | The dewatering of tailings is one of the serious challenges that the ...
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The main chemical reagents used in the metallurgical flotation process of copper sulphide minerals and present in copper mining tailings are presented below [2,47]. The following types of reagents are disclosed: (i) acids, (ii) alkalis or pH regulators, (iii) modifiers, (iv) collectors, (v) ing agents, and (vi) flocculants ( Table 1 ).
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Response surface methodology is used to optimize the leaching process for refractory flotation copper tailings. The proportion of the refractory combination oxide copper (chrysocolla) is 64.84%. At present, few studies have examined the leaching of chrysocolla. In this study, we examine the effects of several variables, including the …
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This study is focused on the froth flotation reprocessing of a copper mineral from flotation tailings. The effects of flotation parameters including pulp density, collector dosage,...
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The copper content of old flotation tailings is similar to the world average content of about 0.4% copper in mined ore. Taking into account the current price of copper on the stock market and predictions …
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The flotation tailings are, in general, either piled up or stored in dams, although most copper tailings have a huge potential for by-products production leading to improve sustainability and ...
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The copper content of old flotation tailings is similar to the world average content of about 0.4% copper in mined ore. Taking into account the current price of copper on the stock market and predictions …
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Thickener feed dilution is often used for enhanced flocculation and sediment compressibility. This work investigated the effect of feed dilution on thickener performance for copper flotation...
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Flotation tailings from copper production are deposits of copper and other valuable metals, such as Mo, V and U. New hydrometallurgical technologies are more economical and open up new possibilities for metal recovery. This work presents results of the study on the extraction of copper by mixed extractant consisting p-toluidine …
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As ore grades constantly decline, more copper tailings, which still contain a considerable amount of unrecovered copper, are expected to be produced as a byproduct of froth flotation. This research reveals the occurrence mechanism of copper minerals in typical copper sulfide tailings using quantitative mineral liberation analysis (MLA) …
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Copper froth flotation tailings containing 1.19 and 0.97 wt% total and acid-soluble copper, respectively, from Chibuluma mines in the Copperbelt province of Zambia were characterized by SEM and XRD techniques. The major phases in the feed material were malachite,...
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In this paper, a complete set of screening tests was established to effectively evaluate the flocculation performance of PAM used for copper tailings treatment.
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A maximum copper extraction of 60 % was obtained in column bioreactor tests with copper flotation tailings (∼0.2% Cu) from Zambia (Hao et al., 2021). Bioleaching in 10-L stirred tank reactors (STR) reached metal leaching of 87% Co and 43% Cu from Scandinavian tailings (Mäkinen et al., 2020).
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The potential of copper recovery from flotation tailings was experimentally investigated using a laboratory-mixing tank. The experiments were performed with solid weight percentages of 30wt%, 35wt%, 40wt% and 45wt% in water. The measurements revealed that adding sulfuric acid all at once to the tank rapidly increased the efficiency …
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Pyrite flotation separation and encapsulation in tailings dams is proposed as a viable way to chemically stabilize tailings. Characterization of potential acid mine generation in tailings led to an innovative process in which acid-generating pyrite is separated by flotation from the coarse tailings and incorporated into the slime zone. …
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Copper can be recovered from the slags by froth flotation after cooling, crushing, and grinding. The obtained Cu-concentrate is sent to the pyrometallurgical process. If grinding is not fine enough for efficient flotation, copper is lost in tailings. In this paper, the ferric leaching of slag flotation tailings is studied.
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However, copper flotation tailings of copper–gold ores often contain significant iron sulphide gangue minerals which may interact with gold leaching in the subsequent CIL circuit. Sulphide minerals may, through sulphide oxidation, cause oxgyen demand to exceed that can be physically added to the CIL circuit. In these cases, gold …
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Ultrasound has been used to enhance flotation recovery of copper tailings. • A batch flotation cell with ultrasound transducers has been constructed. • The ultrasound …
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In this study, a hydrometallurgical method for the recovery of copper, cobalt, and zinc from copper slag flotation tailings (SFT) was investigated. SFT contains large amounts of valuable metallic compounds, such as copper, cobalt, and zinc. A representative SFT sample containing 0.50% Cu, 0.148% Co, 3.93% Zn, and 39.50% Fe was used in …
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Copper ore mining and processing release hazardous post-flotation wastes that are difficult for remediation. The studied tailings were extremely rich in Cu (1800 mg kg-1) and contaminated with Co and Mn, and contained very little available forms of P, Fe, and Zn.The plants growing in tailings were distinctly enriched in Cu, Cd, Co, Ni, and Pb, and the …
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General Description of Ore Processing in a Conventional Copper Flotation P lant Figure 1 is a generalized diagram of a conventional copper flotation plant from the point where ore first enters the circuit to the production of concentrate and tailings. To …
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Sulfidization–xanthate flotation can then be used to extract the copper oxide minerals in the tailings of the copper sulfide minerals to meet the flotation requirements of copper minerals with different floatabilities [97]. According to the characteristics of mixed oxide-sulfide copper minerals from different production areas, bulk flotation ...
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The following parameters were therefore recommended for chemical leaching of copper converter slag flotation tailings: pulp density 30% (w/v), pH 1.5, 70 °C, initial Fe 3 + concentration 15.7 g/L, no aeration, leaching for 1.5 h. These conditions resulted in solubilization of 81.6 and 37.7% of copper and zinc, respectively, while iron recovery ...
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