Treatment of copper-rich gold ore by cyanide leaching, …
The recovery of Au and Ag from a roasted copper-rich pyritic refractory gold ore (78 g/t Au, 6.8 g/t Ag, 1.38 % Cu and 3.09 % Fe was investigated. Cyanide leaching and adsorption tests were performed at different concentrations of cyanide (1.5 g/L and 5 g/L NaCN) and the adsorbent dosages ranged from 2 g/L to 10 g/L.
A comparison of native starch, oxidized starch and CMC as copper …
This copper-activation of pyrite is reported to involve a rapid copper adsorption process at the pyrite surface, where copper(II) is reduced to copper(I) as the sulphur ions ... Role of starch and metabisulphite on pure pyrite and pyritic copper ore flotation. Physicochem. Probl. Miner. Process (2012) View more references.
Chalcopyrite and pyrite floatabilities in the presence of …
Misreported pyrite into copper concentrates dramatically declines copper grade and its recovery. In this study, the effect of sodium sulfide, sodium metabisulfite …
ROLE OF STARCH AND METABISUPHITE ON PURE …
Starch and meta bisulphite were used as a depressant for pure pyrite sample and a pyritic copper ore at two different pHs values. pH was 6.5 and 10 in pure pyrite study while it …
Recovery of Au and Ag from the Roasted Calcine of a Copper-Rich Pyritic
The recovery of Au and Ag from a roasted copper-rich pyritic refractory gold ore (78 g/t Au, 6.8 g/t Ag, 1.38 % Cu and 3.09 % Fe was investigated. Cyanide leaching and adsorption tests were ...
(PDF) A case study of the separation of copper-gold sulfide ore …
of pyritic copper-gold sulfide ore but also sheds . some new light on the utilizat ion of mineral . resources by adopting a new and eco-friendly . reagent scheme. The proposed novel reagent scheme .
Role of Starch and Metabisuphite on Pure Pyrite and Pyritic Copper Ore
Depression of pyrite is very important in sulphide ore flotation. This paper investigates the role of non-toxic depressants on the flotation of pyrite. Starch and meta bisulphite were used as a depressant for pure pyrite sample and a. Abstract. Depression of pyrite is very important in sulphide ore flotation.
Pathway to Prediction of Pyrite Floatability from Copper Ore …
The results showed that, while the cobalt content of the lead-zinc ores was negligible, it was significant in the copper ores. Cobalt showed a positive linear correlation with iron rather than copper, especially in the final copper tailings product, where iron …
Post-regrind selective depression of pyrite in pyritic copper…
Flotation kinetic behavior of two deposits including an elevated-pyritic (Cu/S=0.21) complex copper sulfide ore and a high-grade carbonaceous sedimentary apatite (P2O5>25%) ore were investigated.
(PDF) Assessment of flotation kinetics modeling …
Copper flotation can be also more complicated if flotation feed comes from an elevated-pyritic copper ore. In this investigation, the effect of two different ore types (high pyritic and low pyritic feeds) was studied on …
Growth of minerals in the pyritic copper ore: chalcopyrite …
Pyritic copper ore sample was taken from Siirt- Madenköy Copper Mine in South-East of Turkey. According to the mineralogical analyses, the ore sample contains chalcopyrite (CuFeS 2 ), sphalerite ...
Effect of pyrite content of feed and configuration of locked …
Copper flotation can be also more complicated if flotation feed comes from an elevated-pyritic copper ore. In this investigation, the effect of two different ore types (high pyritic and low pyritic feeds) was studied on rougher stage of industrial copper flotation circuit. Samples were taken from different streams and the structure of ...
Shake flask and column bioleaching of a pyritic porphyry copper …
A bulk sample of 500 kg of copper bearing ore was taken from the Sarcheshmeh Copper Mine.The ore was crushed and screened to 75% − 12 mm for column leaching and to − 100 μm for shake flask experiments.Partial elemental analysis of the sample used in the column leaching is listed in Table 1.The total Cu content was …
International Journal of Mining Science and Technology
Effect of pyrite content of feed and configuration of locked particles on rougher flotation of copper in low and high pyritic ore types Sahar Aghelia, Ahmad Hassanzadehb,c,⇑, Behzad Vaziri ...
Post-regrind selective depression of pyrite in pyritic copper…
The pyritic copper–gold ore used in this study was obtained from a copper–gold mine in Asia. The pyrite rougher concentrate was obtained by two-stage copper and pyrite rougher flotation using the conditions in Table 1 and reported in Agorhom et al. (2013). However, in the present studies, the focus is to examine flotation …
Flotation performance of chalcopyrite in the presence of …
Recently, the copper industry is facing a challenge in dealing with low-grade copper ores and the flotation performance deteriorates when a copper ore with an elevated pyrite proportion is processed. This study investigated the effect of pyrite proportion on chalcopyrite and pyrite flotation via a tri-mineral system (chalcopyrite …
Role of Starch and Metabisuphite on Pure Pyrite and Pyritic Copper Ore
Then pyritic copper ore was used to compare the results with pure pyrite sample. 2. Experimental 2.1. Material In this study pure a pyrite sample for fundamental studies and pyritic copper ore to prove fundamental studies in real situation were used. Pure pyrite sample was obtained from Murgul-Artvin in the northeast of Turkey.
(PDF) Effect of pyrite content of feed and configuration of …
pyritic ore through these cells causes reduction in copper grade. Another interesting point is the sharp plunge in copper grade from cells 5 to 10 in the case of high pyritic ore seems to decrease ...
A preliminary research on acid pressure leaching of pyritic copper ore
DOI: 10.1016/S0892-6875(02)00268-6 Corpus ID: 98414641; A preliminary research on acid pressure leaching of pyritic copper ore in Kure Copper Mine, Turkey @article{Akcil2002APR, title={A preliminary research on acid pressure leaching of pyritic copper ore in Kure Copper Mine, Turkey}, author={Ata Akcil}, journal={Minerals …
Chalcopyrite and pyrite floatabilities in the presence of …
Misreported pyrite into copper concentrates dramatically declines copper grade and its recovery. In this study, the effect of sodium sulfide, sodium metabisulfite (SMBS), and their dosages (100, 200, 300, and 400 g/t) were investigated on chalcopyrite and pyrite floatabilities in a high pyritic copper sulfide ore. Furthermore, the role of…
(PDF) Effect of pyrite content of feed and …
Copper flotation can be also more complicated if flotation feed comes from an elevated-pyritic copper ore. In this investigation, the effect of two different ore types (high pyritic and low pyritic feeds) was studied on …
A preliminary research on acid pressure leaching of pyritic …
The extraction of copper achieved was over 85%. Copper dissolution in this system is affected by particle size, leaching time and oxygen pressure. This paper …
Role of starch and metabisulphite on pure pyrite and pyritic copper ore
Depression of pyrite is very important in sulphide ore flotation. This paper investigates the role of non-toxic depressants on the flotation of pyrite. Starch and meta bisulphite were used as a depressant for pure pyrite sample and a pyritic copper ore at two different pHs values. pH was 6.5 and 10 in pure pyrite study while it was 6.9 and 12 ...
Chalcopyrite and Pyrite Floatabilities in the …
This paper investigates the role of non-toxic depressants on the flotation of pyrite. Starch and meta bisulphite were used as a depressant for pure pyrite sample and a pyritic copper ore at two different pHs values. pH …
Assessing the depression of high-concentration pyrite in copper …
Both IPETC and W34 are used in the concentrator which is processing a high-pyritic Cu ore simulated in this study. In addition, IPETC is a widely used Cu-selective collector against pyrite in copper flotation (Botero et al., 2022, Mkhonto et al., 2022), and the selection of IPETC in this study represents the industry practice. Sodium hydroxide ...
The Kamoa Copper Deposit, Democratic Republic of Congo …
Most of the ore is located in a 30-m-wide zone spanning the Copper Harbor Formation red beds and the overlying Nonesuch Formation shales. Sedimentation of these units was accompanied by subtle ...
Recovery of Au and Ag from the roasted calcine of a copper-rich pyritic
Section snippets Materials. The sample of copper-rich pyritic refractory gold ore which was obtained from copper-rich zones of the Mastra deposit (Gümüşhane/Turkey), was crushed to −4 mm and then ground for 30 min to −73 μm (P 80) by using a laboratory rod mill.The ground ore was riffled and then fed to a rotary sample …
Complex Processing of Refractory Pyrite Copper, Copper …
Various technological schemes [9, 10] of copper ore and copper-zinc ore processing, technological schemes of direct selective flotation and variants of collectively selective schemes have been developed and introduced for refractory pyrite-pyrrhotite-copper-zinc ores of Tarnersky, New Shemursky, Podolsky, Uzelginsky, Safyanovskoye, …
Role of starch and metabisuphite on pure pyrite …
Starch and meta bisulphite were used as a depressant for pure pyrite sample and a pyritic copper ore at two different pHs values. pH was 6.5 and 10 in pure pyrite study while it was 6.9 and...
(PDF) A Study on Selective Flotation in Low and High Pyritic Copper …
Abstract and Figures. The effect of chemical reagent configurations was investigated on two different copper sulfide ore types including high and low pyritic feeds. Three different combination of ...
