Flotation, in mineral processing, method used to separate and concentrate ores by altering their surfaces to a hydrophobic or hydrophilic …
Copper Oxide Ore by Flotation and Metallurgical Processing XU BAI,1,2 SHU-MING WEN,1,2,4 QI-CHENG FENG,1,2,5 JIAN LIU,1,2 YI-LIN LIN,2 and ZHI-HUA YAO3 1.—State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, Yunnan, People's …
The variation in flotation process water quality reflects on metallurgical results. • Recycling process water induces negative impact on flotation of Cu–Co oxide ore. • The chemical species in recycled water interfere with reagents efficiency. • Excess thiosulphate ions presence alters mineral surfaces and creates reducing conditions in ...
Sulphidising flotation of oxide copper–cobalt ores with sodium hydrosulphide used as sulphidising agent is common practice in Katanga, Democratic Republic of …
The recovery of Zn in the concentrate is more sensitive to the slime than Zn grade. The Zn minerals lost in the tailing are mostly in the form of very fine disseminated particles. About 11% of smithsonite with particle sizes finer than 10 µm is lost in the slime. Overall Zn flotation recovery is estimated to be about 84%.
Flotation of smithsonite from tailing coming from a cerussite flotation circuit was investigated using Armac C and Armac T as alkyl amine acetate collectors. The results showed that the dosage of Na2S, collector type and dosage, collector's mixture ratio, and desliming are the main affecting parameters on the Zn grade and recovery of smithsonite …
SMITHSONITE FLOTATION FROM ZINC OXIDE ORE 453 Downloaded by [Amir Kabir University], [Akbar Mehdilo] at 23:47 21 January 2014 FIG. 11. Grade and recovery of Zn in the smithsonite flotation concentrate as a function of SH dosage (7500 g=t Na2S, 300 g=t Armac C, 800 g=t Armac T, pH ¼ 11). ...
Wang and his colleag ues [44] carried out flotation tests on a copper oxide ore in Dali, containing 0. 69% TCu copper and 11.24 g/t of silver. The ore w as beneficia ted by the sulphidis ation ...
The recovery of iron oxide reduced from 68% to approximately 7% in the presence of 15% kaolinite. The presence of kaolinite appears to inhibit the cationic flotation of hematite by the etheramine. ... more effective for reverse iron ore flotation, reducing or eliminating the need for the depressant reagent, also contributing to a decrease of ...
Xiaotian Gu. Yuexin Han. Natalia Parra Alvarez. Michigan Technological University. Abstract and Figures. A tremendous amount of research has been done on …
The objective of this review was to present and identify the effects of different flotation conditions on removal of specific impurities in iron ore such as quartz, alumina, …
Grinding, desliming at -20 μm and one-stage flotation with dodecylamine addition (cationic collector, 99% purity) lead to a maximum zinc ore flotation recovery and a zinc grade of 84.5% and 24.5% ...
recirculating oxide mineral was increasing the possibility of this being lost to tails. PLANT EXPANSIONS AND RESULTS Rougher/CPS Expansions The results of the plant and laboratory test work and mineralogy analysis were used to justify and extend the mixed ore flotation plant, with the total changes costing around US$19 million. A more
Cassiterite Flotation – Tin Oxide. The nominal size range for cassiterite flotation is between 2 and 100 microns. The top size is variable depending upon the liberation of the cassiterite particles. Cassiterite grains …
With the continuous depletion of a large number of zinc sulphide ores that are easy to treat, the finely disseminated and refractory low-grade zinc oxide ores has become an important source for the production of zinc minerals. In this paper, a sulfurization-amination flotation process has been proposed for concentrating large amounts of low …
To explore the flotation feasibility and flotation law of iron minerals from amphibole-type iron oxide ore with full-size minerals, a systematic study on the flotation behaviors of single minerals hematite, quartz, and amphibole was carried out with the anionic reverse flotation system. The effects of collectors, depressants, activators, and …
Owing to the similarities in the physicochemical and surface chemistry of the constituent minerals, separation of zinc oxide minerals from their gangues by flotation is an extremely complex process. It appears that selective leaching is a promising method for the beneficiation of this type of ore. However, with the high consumption of leaching ...
In this paper, we have reviewed the surface properties of common copper oxide minerals and summarized application of direct flotation, sulfidization flotation, and activation flotation in recovery of copper oxide minerals.
A new method, staged flotation for effectively increasing the recovery of ultra-fine copper oxide ore with a new type of collector (ZH-1, C3-5 carbon chain xanthate) is proposed for the first time. The flotation …
Finally, the ground and classified ore enters the flotation circuit, and both the concentrate and tailings streams undergo dewatering (solid–liquid separation) before shipping and disposal, respectively. ... Amines are used in froth flotation of oxide minerals, and adsorption of amines on oxides is physical in nature. Fatty acids are also ...
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 …
The characterisation of the non-sulphide PGM ore used in this study indicated that the ore is enriched in oxide iron minerals as a result of weathering. In the flotation work, the maximum PGM flotation recoveries achieved using the sulphide co-collector schemes were 55.1% 3E (Pt, Pd and Au).
Flotation of Aladag oxide lead-zinc ores. K.Tahsin PEREK. Oxide lead–zinc ore sample containing 10.17% Pb, 10.98% Zn, 57g/t Ag and 164g/t Cd was subjected to this experimental study and taken from Kayseri located in the foothills of the Aladağ Mountains, Turkey. Preliminary flotation tests with the ore sample indicated that there was no ...
Other ways to concentration minerals include approached based on density (Froth Flotation) used if ore density is less than density of impurities, or via melting points, or magnetic properties (Magnetic separation). ... For a given oxide MO to be smeltable, the temperature must be high enough that reaction (ref{2.4}) falls below that of at ...
In this study, a novel method to recover copper from Yulong complex copper oxide ore was devel- oped by flotation and high-gradient magnetic sepa- ration. In the flotation process, a novel modifier LA that is a mixture of ammonium sulfate and ethylenediamine was introduced to promote the sulfidation of copper oxide with Na.
In this paper, the various flotation methods of zinc oxide minerals which have been proposed in the literature have been detailed with the aim of identifying the …
Zinc extraction from oxide ore has been paid more and more attention to due to the exhaustion of zinc sulfide ore resources. In this work, the volatilization kinetics of Zn from the flotation products of low-grade lead–zinc oxide ore during carbothermal reduction in the temperature range of 900–1300 °C were investigated. The phase …
SH, as a depressant in single mineral separation of smithsonite–calcite by Hollimond tube in oleic acid flotation showed successful results. On the other hand, using SH in real oleic acid flotation of zinc oxide ore the grade of CaO was decreased while the grade of zinc also fell steeply [3]. To understand the causes of these reverse results ...
Many of our largest copper deposits contain both sulfide and oxidized copper minerals. The large porphyry mines, with a total copper content of from 1.3 to 2.0 per cent., send to their mills ore with an oxide content of from 0.2 to 0.4 per cent. While the recoveries of the sulfide minerals are considered satisfactory, using modern flotation ...
The oxide ore has a much higher grade than the mixed and sulphide ores but contributes less to the resource (Broughton et al., 2002). The preferred method for the flotation of oxide and mixed copper ores is sulphidisation. The reagents are typically sodium sulphide (Na 2 S) and sodium hydrosulphide (NaHS). Slug sulphidisation, which …
The floatability of copper oxide ores is generally worse than that of copper sulfide ores, and is greatly influenced by the existing form of copper in minerals and gangue composition. For example, when copper is in the …
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 …
