Upgrading of talc-bearing copper-nickel sulfide ore by froth flotation …
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 …
Maximise pyrite depression in copper ore flotation using high …
The effect of pH, solid content, water chemistry and ore mineralogy on the galvanic interactions between chalcopyrite and pyrite and steel balls Frontiers of Chemical Science and Engineering, 2013 Copper–molybdenum ores flotation in …
Compelling Coarse Ore Flotation Results Indicate …
The combined XF overflow (minus 90 µm) and the HydroFloat overflow represent the downstream feed in the process flowsheet. For each of the 250 µm and 350 µm laboratory tests, the XF and HF ...
Characteristics of Gold Minerals in Gold Concentrate …
The presence of copper minerals during the cyanidation leaching of copper-bearing gold ores has various disadvantages. Approximately 30 kg/t of NaCN is consumed when the copper mass fraction in the leaching feed is 1% [9]; therefore, it is expensive to isolate gold from gold ores and concentrates with high copper content via direct …
A New Technique for Recovering Copper From …
The results of the combined flotation and metallurgical processes test indicated that a qualified concentrate with a 29.37% copper grade can be obtained via …
A New Technique for Recovering Copper From Complex Copper Oxide Ore …
Copper oxide ore has a complex composition, and a low recovery rate is often achieved via the traditional sorting method. A new combined process of flotation–high-gradient magnetic separation–leaching is proposed here to recover copper minerals. The test results showed that the flotation process was successful when using …
Copper Flotation
A Copper Flotation Flowsheet. Because the copper in this type of ore usually assays only plus or minus 1% copper, the porphyry copper operations must be relatively large in order to be commercial. The flowsheet in this study illustrates a typical 3,000 ton per day operation. In general most operations of this type have two or more …
1 Froth Flotation – Fundamental Principles
Problem: A copper ore initially contains 2.09% Cu. After carrying out a froth flotation separation, the products are as shown in Table 1. Using this data, calculate: (a) Ratio of …
Sulfide Flotation
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. Many sulfide minerals are narrow band gap semiconductors.
Copper Mining and Processing: Processing Copper Ores
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 everyday use.The most common types of ore, copper oxide and copper sulfide, undergo two different processes, hydrometallurgy and …
The Critical Role of Pulp Density on Flotation …
A nickel-copper sulfide system usually coexists with serpentine in deposits. Low nickel-copper recovery and high content of serpentine in concentration adversely affects subsequent metallurgical …
The effect of frother type and dosage on flotation
From a set of 22 products, 4 stood out as viable alternatives for the gold and copper ore flotation, indicating metallurgical recovery improvement in lab scale flotation tests. View Show abstract
Chloride leaching of silver and lead from a solid residue …
The content of silver in copper and iron sulfides may be in the range from 0.7 to 2.7% by volume. 898 T. Chmielewski, K. Gibas, K. Borowski, Z. Adamski, B. Wozniak, A. Muszer
Flotation of antimony ores with high arsenic content
with high Sb and low As content by flotation. 2. Materials and methods This study was carried out to produce a high-quality antimony concentrate (>60% Sb and <0.5% As) from high As content antimony ore taken from the field with the most important antimony reserve in Turkey.
A successful operational initiative in copper oxide …
Zarigan mixed oxide-sulfide complex ore (Yazd province, Iran) contains 6.12% Pb, 0.87% Zn, 47.27% Fe2O3, and 27.18% SiO2. In the present paper, the possibility of lead concentration from the ore ...
Copper Ore
The common reagents for copper ore flotation are xanthates as collector, pine oil as frother, sodium cyanide as depressant, and lime to maintain slurry alkalinity. The concentrate in the form of froth and slurry contains +20% copper. It is thickened in a rake-type unit from a level of 30% solid content to 60%.
A study of mechanisms affecting molybdenite recovery in a bulk copper
A sharp decrease in molybdenite recovery was observed at increasing concentration of limestone skarn ore in the feed. The ultimate molybdenite recovery decreased from 92% in the absence of skarn ore to 85% with 25% skarn ore and 56% with 50% skarn ore in the flotation feed. Copper flotation was affected to a much lesser …
Investigating the impact of inoculation on bioleaching of copper …
The process developed for the Tizert ore involved the flotation of copper sulfides. The flotation tests were conducted using a laboratory machine with an impeller speed set at 1200 rpm. For each test, one kilogram of ground samples (with a P 80 of 120 µm) was placed in a 2.4 L flotation cell. The tests were carried out at room ...
Improving Flocculation Performance of Copper …
For instance, the flotation process is performed with water containing 25–35% wt solid ratio and is consumed 1.9–3 m 3 water per ton of ore processed …
Recovery Cu from a Copper Oxide Ore by Flotation and Leaching
The copper oxide ore is high oxidation ratio and the high combination ratio with a low grade of Cu 0.71%. Copper concentrate of Cu 15.02% with a recovery of 38.55% was obtained by flotation.
Flotation of an Oxidized Copper Sulfide Ore
The sample contained: 1.99 % Cu, 6.3 % Fe, 1.64 ppm Au, 8.57 ppm Ag, 13.9 ppm Pb, and 129 ppm Zn. After desliming, the flotation feed assayed 2.7% Cu having about 98% of the copper content in the ...
(PDF) Investigation of flotation parameters for …
Potassium ethyl xanthate has been reported to have enhanced hydrophobicity and promotion of bubbles in the flotation of low-grade copper ore [10, 22]. It has been reported that the total loss of ...
Multidimensional Analysis of Copper Ore Flotation in …
The testing material was a sample of Polish copper ore which was taken from ZG Polkowice KGHM Polska Miedź S.A. For flotation tests a sandstone type was used, which was previously separated from the raw material and then it was crushed and classified to obtain a 40–71 μm size fraction. The copper content in sandstone type was equal to …
Improving the Copper-Molybdenum Ores Flotation …
The main problems of copper-containing ore processing are: the low copper content in ore, the high content of slurry particles (up to 40% of the class size smaller …
Development of copper recovery process from flotation …
The total copper recovered from its ore through flotation process is about 56% [6, 18], which indicates that the flotation tailings still contain valuable copper components such as chalcopyrite. In addition, old flotation tailings sometimes have a higher copper grade (0.2–0.4%) than that of low‒grade ores (0.2‒0.3%).
Estimated Water Requirements for the …
This flotation slurry, also referred to as pulp, contains from 25 to 40 percent solids. After the series of concentration steps, the final copper concentrate is sent to thickeners and …
Behavior of talc and mica in copper ore flotation | Request …
The copper flotation grade was reduced in the presence of high amount (30%) of muscovite due to the entrainment, but its effect on the copper recovery was negligible. Discover the world's research ...
(PDF) Flotation of an Oxidized Copper Sulfide Ore
The aim of this study was the recovery of copper from the oxide copper ore by froth flotation and agitating sulphuric acid (H2SO4) leaching. The ore with 4.21% copper grade used in this study was ...
Effects of particle size on flotation performance in the separation …
In the flotation tests, potassium dichromate (K 2 Cr 2 O 7), sodium diethyldithiocarbamate (DDTC) and methyl isobutyl carbinol (MIBC) were separately used as the lead depressant, the copper collector and frother.All reagents for tests are analytical grade. Tap water was used for the lab flotation tests. The chemical analysis results of …
Current Situation on Flotation of Cu-Pb-Zn Sulfide Ore
of copper and lead - separation of copper and lead - zinc flotation from tailings", a flotation test to a polymetallic ore was carrried out [5] . The final products with the recovery of 73.21% Cu ...