Automated SEM study of PGM T distribution across a
For the primary circuit sampled, UG2 ore milled to 40% 75 m was fed into the flotation cells with 10 forced air tank cells (20 m3) constituting the concentrate bank. The reagents used for flotation were copper sulfate (activator), sodium isobutyl xanthate (collector), carboxy-methyl-cellulose (CMC) (depressant) and methyl isobutyl carbinol
Reagent Optimization across a UG2 Plant
across the UG2 circuit during the flotation process. All tests were performed using batch flotation and adding different reagents involved in the process in order to obtain the concentrate. This information was needed to compare the dosages in terms of grade and recovery data that would be obtained after conducting flotation tests.
The oxidized ores of the Main Sulphide Zone Great
flotation, smelting and matte production, ... the PGE from this ore type proved uneconomic The oxidized ores of the Main Sulphide Zone, Great Dyke, Zimbabwe turning resources into minable reservesmineralogy is the key ... UG2 Reef at e.g. Smokey Hills Mine in the eastern Bushveld
Effect of pH on the Recovery and Grade of Base Metal
A. Ore Preparation The UG2 ore was crushed in stages using a laboratory jaw and cone crusher to 45% passing 75 m. The crushed ore was then blended and rotary split to 1kg representative Proceedings of the World Congress on Engineering and Computer Science 2011 Vol II WCECS 2011, October 19-21, 2011, San Francisco, USA ISBN 978-988-19251-7-6
Flotation Conditioners of Oxidized Zinc and Lead Ore
May 24, 2019 The use of flotation conditioners process can increase the selectivity of the flotation process, enhance the effect of the collectors, and improve the conditions of the ore pulp. 1. Sulfurizing Reagent. Oxidized ore is generally formed by ionic bonding, and is highly hydrophilic. It is not easy to float oxidized ore with xanthate collector.
Effect of Rinkalore Mixture on the Flotation of Mupine
Flotation of the oxidized ore was performed with fatty acid type Rinkalore. Copper and cobalt present in the ore were concentrated with optimal doses of sodium silicate, Rinkalore mixture of 500 g/t, 1500 g/t respectively and optimum tall oil and pH of 23% and 9.5 respectively.
PDF A review of pyrrhotite flotation chemistry in the
The anodic current density varies from 1.0 to 2.0 mA/cm 2 at a potential 0-0.2 V (SHE). Flotation responseIt is evident that pyrrhotite is susceptible to oxidation in aqueous solution, an important factor which influences its flotation recovery since the oxidation products at particle surfaces inevitably influences surface hydrophobicity.
Mach Reactor HSCD on UG2 Ore. ... Flotation of tailings with hydrodynamic cavitation device - Ross et al. 2019. FREE DOWNLOAD. Send download link to IMPC Paper1118. FREE DOWNLOAD. Send download link to Improved flotation of fine PGM tailings with HSCD - 120118. FREE DOWNLOAD.
A review of pyrrhotite flotation chemistry in the
Jul 01, 2005 1.. IntroductionPyrrhotite is one of the most abundant iron sulfide minerals. It is found in nature to be commonly associated with pentlandite, quartz, ankerite (CaFe(CO 3) 2), pyrite, chalcopyrite, and other sulfide minerals.In many flotation plants, pyrrhotite is rejected to the flotation tailings as a waste product such as in the case of CuNi ores and massive nickel ores (Fornasiero et ...
Investigation into the mineralogy and flotation
Abstract The 2.05 Ga Bushveld Complex in South Africa, host to many lucrative ore deposits, is surprisingly pristine and unaltered given its geological age. In some areas, however, there is evidence of low temperature weathering, alteration and oxidation, most commonly observed when the ore is near surface. The Pilanesburg Platinum Mines (PPM) operation in South Africa treats ore from an open ...
A conceptual flowsheet for heap leaching of platinum
Keywords PGMs, heap leaching, low-grade ore concentrate, cyanide, thermophiles, bioleaching 1. Introduction During the milling and flotation of platinum group metal (PGM) concentrates, particularly of Upper Group 2 (UG2) ores, cleaning flotation can often deliver both a high-grade and a low- grade
Evaluation of alternative reagent schemes for the
Oct 01, 2003 The flotation behavior of the oxidized, high-chromium PGE ores is different from that of the high chromium unoxidized ore. Specifically, the flotation activity of the gangue and chromium is more pronounced, and the oxidized PGE-bearing minerals are not readily floatable. Flotation studies on this ore were concentrated on examining the ...
Effect of suspension chemistry onto voltage drop
Dec 10, 2010 Fig. 5 shows the results for UG2 ore. The required time for electro-flotation is again twice that of the classic air flotation. The recoveries achieved this time, however, are comparable to that of classic air flotation (Fig. 5A). The froth depth formed was between 2 and 3 time fold the one observed for Merensky reef ore obtaining better ...
Study of effect of process parameters and their
Froth flotation process is a complex process as all the parameters in the flotation interact with each other. The effects of individual parameters are well studied but interactive effects are less documented for UG2 ore flotation. This study investigated the effect of the interaction of the process variables in UG2 ore flotation.
Platinum is produced in South Africa by Amplats Impala
UG2 ore is by far the richest source of rhodium, ... Flotation was used for the first time to produce a sulphide platinum concentrate in 1926, at Potgietersrus. 28 . ... By 1936, throughput had expanded to 18 000 tons of ore per month, and the oxidized ore was nearly exhausted.
Evaluating floatability of platinum group minerals in
Mar 30, 2021 The PGM flotation predictor Predicting PGM ore flotation performance using results from automated mineralogy systems. Minerals Engineering, 36-38, 75-80. Carelse, C., Chetty, D and Manuel, M. (2020). A preliminary evaluation of liberated Platinum Group Minerals in Platreef Ore with respect to their floatability, IMPC Conference Proceedings, 2020.
Concentration of oxidized lead ores
and flotation of the oxidized ores of lead. The method employed is the presentation of the actual o operation of several mills which have been treating such ores during 1926 and 1927. The plants described are representative ... ore de posits, generally above the level of the. 6.
Investigation of the electrochemical factors affecting the
The low alloy steel produces oxidized iron inside mill and reduces copper flotation. Gas changes from nitrogen to air and to oxygen resulted in higher Eh, DO and OCP values and consequently were caused formation of additional amount of oxidized iron species and lowered copper recovery.
Leaching and recovery of platinum group metals from
Flotation concentrate was roasted in a Carbolite muffle furnace in the case of a static air roast, or in a Linn muffle furnace in the case of a reductive roast. In the latter procedure, the flow-rate of reductive Sasol gas was 1.5 liters/minute per 110 g of concentrate and the sample was The Journal of The South African Institute of Mining and ...
PDF Interpreting the role of reagents in the flotation
Reagents are added to the flotation process of Merensky Reef ores to achieve specific functions that enable the separation of valuable minerals from gangue minerals on the basis of the difference in their surface properties. However, due to the complexity of the process, the various interactions that occur as well as the incomplete liberation of the ore and range of minerals present, it is ...
Flotation of nonsulphide PGM ores Optimization of
Flotation of non-sulphide PGM ores - Optimization of flotation reagent suite and conditions by Katlego Sekgarametso A dissertation submitted to the faculty of Engineering and the Built Environment, University of Witwatersrand, Johannesburg, in fulfilment of the requirements for the degree of
of Platinum Group Minerals PGMs
May 18, 2021 minution circuits as indicated by the mineralogy of the flotation feed and then the man-Figure 1. Typical MF2 circuit used in treatment of PGMs in Merensky, Upper Group Chromitite No.2 (UG2), and Platreef ores 7. These improved processes are aimed at managing the problem of increasing liberation while not excessively grinding ner.
Minerals Engineering Conferences Flotation 13
The interactive effects of chemical and process parameters on the flotation performance of a UG2 ore B. McFadzean, S. Pani, J. Wiese and C.T. O Connor (University of Cape Town, South Africa) The effect of gangue mineralogy on the recovery of chalcopyrite in batch flotation experiments a case study using two ores, one rich in siliceous gangue ...
Proceedings of Flotation 13
The interactive effects of chemical and process parameters on the flotation performance of a UG2 ore B. McFadzean, S. Pani, J. Wiese and C.T. OConnor (University of Cape Town, South Africa) The effect of gangue mineralogy on the recovery of chalcopyrite in batch flotation experiments - a case study using two ores, one rich in siliceous ...
A Process Mineralogical Study on the effect of Alteration
Oxidation affects the valuable minerals and thus flotation recoveries whilst hydrolysis/hydration acts on the gangue minerals and therefore mainly affects concentrate grade. The more oxidized ore sample in this study had undergone the oxidation type of alteration, rather than hydrolysis/hydration and the processing challenge associated with it ...
SULFIDE FILMING AND FLOTATION OF CHRYSOCOLLA
The porphyry ore-bodies in the Southwest contain both copper sulfide and oxidized copper minerals. The sulfide minerals are readily concentrated by flotation. Although concentration of oxidized minerals by flotation methods by the Kenneoott Copper Company in Alaska was successful, many other large and small scale attempts have failed. Chapman1
Flotation of oxidized copper ores Inspiration
We claim 1. The method of recovering copper by froth flotation from an aqueous pulp of an ore containing both sulfide and oxidized minerals of copper which comprises subjecting an aqueous pulp of the ore to a first froth flotation operation in the presence of a collector for sulfide copper minerals, thereby producing a concentrate containing a large proportion of the sulfide copper minerals ...
Kell hydrometallurgical process for extraction
pressure oxidation step during which the dissolution of PGMs is minimized. The residue from pressure oxidation is subjected to a ... metallurgical responses of flotation concentrates from UG2 and Platreef to the Kell Process are provided, and key outcomes of an ... ore
How oxidation affects selective flotation of complex
Nov 29, 2013 Oxidation is one of the most important factors. The oxidation of complex sulphide ore is found to be enhanced by the presence of pyrite. Pyritic complex sulphide ore sometimes behaves like elemental sulphur in flotation. Such troublesome behaviour is often experienced for flotation systems in which the natural pH of the. pulp is low.
Santosh Pani Asistant Ore Dressing Officer Indian
control of flotation performance which are available to a plant A major challenge in the processing of PGM-bearing UG2 ore is the fact that it is comprised largely of chromite (6090% by volume). Chromite is generally not naturally floatable but significant quantities report to the concentrate by entrainment.
Flotation method for oxidized ores Ceca SA
In a method for enriching oxidized ores by froth flotation, use is made, as collector, of a combination comprising at least a first compound selected among amino-l-alkane products having the general formula R 1 - (NH CH 2 CH 2 CH 2)n NH 2, wherein R 1 is a saturated or unsaturated straight- or branched-chain hydrocarbon group containing from 8 to 18 carbon atoms, and n is an integer ranging ...
quotFlotation of the oxidized ores of zincquot by Fred Henry Bunge
There is no satisfactory method of concentrating the finely disseminated oxide ores of zinc. Gravity methods of concentrating such ores may be used for coarsely crystalline materials in which the zinc material is free at approximately 10- to 35-mesh or coarser. In addition, gravity methods of concentration do not give a satisfactory separation on those ores in which the gangue mineral is small.
how to treat oxidized ore in flotation
How To Treat Oxidized Ore In Flotation. Flotation of oxidized lead-silver ores.Mill on a mixed sulfide-oxide gold-silver-lead ore.Tables and flotation are used here, and about 200 tons of oxidized slime treated by flotation.In 1923, the eureka holly mining co.Started operating a 90-ton mill at eureka, nev., using tables and flotation, on an oxidized lead-silver ore.
Journal of Physics Conference Series PAPER OPEN
Improvement of ore recovery efficiency in a flotation column cell using ultra-sonic enhanced bubbles To cite this article L O Filippov et al 2017 J. Phys. Conf. Ser. 879 012023 View the article online for updates and enhancements. Related content Thermodynamics of ultra-sonic cavitation bubbles in flotation ore
Experimental Investigation on Flotation of Refractory
To improve the recovery of copper from refractory copper oxidized ore by sulfidization-flotation process. The result determined the optimal flotation process parameters of refractory copper oxidized ore, and the better quota selecting separately obtained by a large number of research. The copper concentrate grade reaches 10.85%, the recovery reaches 57.41%.
Journal of Physics Conference Series PAPER OPEN
the most used and efficient methods to treat oxidized ferruginous quartzite when it comes to low-grade iron ore (less than 40%) and it can produce high grade concentrates. Specialists of SP ZAO IVS has developed and patented a hematite ore flotation technology 1. Hematite ores are different by mineral
An evaluation of small scale open cast mining of UG2 in
During the latter part of the 1980s and early 1990s, advances in the metallurgical treatment of oxidized ore, specifically the UG2, as well as operational problems, created the impetus to begin the exploitation of these resources. Small-scale open cast mining has become viable due to the development of suitable mining methods that facilitate ...
grind of froth flotation machines in usa price
Froth Flotation Copper Ore Processing Plant View Froth. Froth Flotation Method Jxsc Machine. The froth flotation method is widely used to treat various veins of gold and silver ores for the following reasons 1 In most cases the froth flotation process can enrich gold and silver in sulfide concentrate to the greatest extent and discard a large number of tailings thus reducing the smelting cost
Flotation of a Refractory Copper Oxide Ore Using
Flotation of Jinping refractory copper oxide ore activated by a combined reagent of amine and ammonium has been fully studied in present study. The results show that the combined reagent (i.e., ethylenediamine phosphate and ammonium bicarbonate) has a remarkable effect on flotation performance, which can not only effectively activate the refractory copper oxide mineral, but also