pH Control in Flotation of PGM Platinum Group Metal Ores - Froth ...
(note this was for mainly PGMs) the type ore used has been likened to Merensky with high tulc and alkaline pH. From my observations lab flotation tests I noticed that acidic pulp seemed to float fast, with a high mass pull at first and then the intensity of the froth dies down as time goes by. I was left wondering whether it would...Read More
The PGM flotation predictor: Predicting PGM ore flotation ... - Mintek
Performance of froth flotation recovery plants for platinum group minerals (PGMs) is usually monitored by means of routine chemical assays of samples taken at various locations in the plant. Whilst these assays can alert the plant metallurgist to variations in recovery, the reasons for changes in recovery are not adequately...Read More
Froth Flotation - Department of Chemical Engineering
1 Froth Flotation – Fundamental Principles. Froth flotation is a highly versatile method for physically separating particles based on differences in the ability of air bubbles to selectively adhere to specific mineral surfaces in a mineral/water slurry. The particles with attached air bubbles are then carried to the surface and.Read More
an investigation of froth effects in scavenging flotation of platinum ...
Jan 21, 2013 ... the 'lost' platinum. The objective of the research was to improve PGM recovery and reduce the chromite recovery in the scavenger. This was to be achieved by varying different parameters, which included froth washing, froth depth, the use of a baffle (an innovative technique, in which two baffle lengths were...Read More
Investigations into the Recovery of Platinum Group Minerals from the ...
In the flotation of platinum group minerals (PGMs) it has generally been assumed that they will behave similarly to base metal sulfides and thus sulfide reagent regimes ... Since microflotation does not incorporate any froth phase it is really a measure of the mineral's hydrophobicity after treatment with the collector molecules.Read More
Froth Floatation Process - YouTube
May 5, 2010 ... Follow us at: https://plus.google.com/+tutorvista/ Check us out at http://chemistry.tutorvista.com/inorganic-chemistry/metallurgy.html Froth Floatation Proce...Read More
Adsorption of copper sulphate on PGM-bearing ores and its ...
Some investigations have suggested these changes in flotation performance are due to changes in the froth phase rather than activation of minerals by true flotation in the pulp zone. In the present study, the effect of copper sulphate on froth stability was investigated on two PGM containing ores, namely Merensky and UG2...Read More
Minerals Engineering | SI:Froth Flotation | ScienceDirect.com
The PGM flotation predictor: Predicting PGM ore flotation performance using results from automated mineralogy systems. Original research article: Pages 75-80. Charles Bushell. Download PDF. Article preview...Read More
the flotation of high talc-containing ore from the great dyke of ...
causes problems during the flotation of the PGM minerals due to the fact that talc consumes high ... flotation feed. De-sXinhai the ore was able to reduce the depressant dosage up to 300 g/t as opposed to 500 g/t that is used at Mimosa Mine. Keywords: Froth flotation, platinum-group metals, talc, de-sXinhai, X-Ray diffraction...Read More
Water Quality in PGM Ore Flotation - International Mine Water ...
This study investigates the interactive effect of plant water ionic strength and pH in the flotation of a sulphidic PGM bearing ore. Results suggest that water quality variations may have effects at both the air-water interface as well as the mineral air interface. Key words Froth stability, Ionic strength, pH, Water quality, Water...Read More
Review of Recovery of Platinum Group Metals from Copper Leach ...
Porphyry copper and mixed copper-gold sulfide deposits contain varying amounts of precious (gold and silver) and platinum group metals (PGMs). Currently, milling and froth flotation is the most common processing route for the treatment of high-grade base metal sulfide ores. During this process, the precious metals and...Read More
Recovery of Platinum, Palladium, and Gold From ... - CDC stacks
beneficiated by froth flotation (l-l) and matte smelting-leaching (4). Because of long processing times en- countered with conventional treatment of. PGM sulfide concentrates and the ultimate probable dependence on a foreign smelter and refinery to produce the platinum- group metals, alternative processing of. Stillwater...Read More
Mineralogical and geochemical variations in the UG2 reef at ...
beneficiation of PGM by. Michael-John McCall. Thesis presented for the degree of Master of Science in the Faculty of Science at. Stellenbosch University ... beneficiated via comminution, froth flotation and smelting techniques. The ... association of PGM with comparably higher sulphide mineral proportions will benefit.Read More
US6679383B2 - Flotation of platinum group metal ore materials ...
Typical mineral processing operations for PGM ores involve comminution followed by concentration of the PGMs by flotation. .... A flotation concentrate is recovered from froth collecting at the top of the slurry in the flotation vessel and a flotation tail is removed with slurry withdrawn from the bottom portion of the flotation...Read More
Froth Flotation of a Particular ore - CPUT Electronic Theses and ...
maximise the recovery of PGEs. The performance of the froth flotation process is largely dependent on the chemical additives used and these chemicals have been extensively studied. Mixtures of collectors are widely used in the flotation of sulphide and platinum group mineral. (PGM) ores. A range of performance benefits...Read More
An Overview of Optimizing Strategies for Flotation Banks - MDPI
Oct 10, 2012 ... Abstract: A flotation bank is a serial arrangement of cells. How to optimally operate a bank remains a challenge. This article reviews three reported strategies: air profiling, mass-pull (froth velocity) profiling and Peak Air Recovery (PAR) profiling. These are all ways of manipulating the recovery profile down a...Read More
A practical approach to plant-scale flotation optimization
However, this reduction in mass pull and chrome must not come at the sacrifice of platinum group mineral (PGM) recovery. With this aim in mind, a metallurgical team was assembled to develop a methodology for plant-scale flotation optimization. The focus areas for flotation optimization were: ® Air rate. ® Froth depth.Read More
Flotation Improvements at Lac Des Iles Concentrator
PGM and sulphide minerals, together with any attached silicates. Accordingly,. 750 grams of CMC depressant were used, per tonne of mill feed. Flotation ... START-UP. From start-up, the plant encountered operational problems. Froth stability within the rougher and scavenger cells, proved very difficult to maintain. This was.Read More
Potential Processing Routes for Recovery of ... - Springer Link
Abstract The beneficiation of platinum group metals. (PGMs) from pristine (unweathered) sulfide ores has con- ventionally been conducted through froth flotation, which typically achieves platinum recoveries of over 85%. The achieved successes of PGM concentration by flotation from the pristine sulfide ores are largely due...Read More
Mining Froth Flotation | Mining Pelletization |CP Kelco
CP Kelco is a leading provider for mining froth flotation and pelletization aids. Our FINNFIX products offer truly multi-functional advantages.Read More
TOF-SIMS studies of surface chemistry of minerals subjected to ...
for surface chemical analysis of mineral in the context of froth flotation. A wide range of ... TOF-SIMS analyses in the mineral flotation context . ..... (wet and dry) on the batch flotation test of Platinum-Group Miner- als (PGMs). Results indicated a decrease in the recovery and grade of PGMs when HPGR-dry milling was used.Read More
Flotation '17 - Minerals Engineering International
12.40 Flotation study of a fine grained carbonaceous sedimentary apatite ore – challenges in process mineralogy and impact of hydrodynamics ... 15.00 Tank design modifications for the improved performance of froth flotation equipment .... 17.00 Improved flotation of fine PGMs with a high shear cavitation device. V. Ross...Read More
Arrakis Services Overview
Secondary Recovery From MineTailings. PGM Recovery. Custom Concentrate & Dore Refining. Precious Metals Dore Analysis. 6. Bench & Bulk Treatability Testing. Auto Clave Testing. Froth Flotation. Gravity Concentration. Alternative Leaching. Environmentally Benign Halogen Leaching. Ultra Sonic Enhanced Leaching.Read More
Sabinet | Flotation cell technology and ciruit design - an Anglo ...
Oct 1, 2007 ... Froth flotation is the primary mineral processing separation step employed in the beneficiation of PGM ore bodies. Anglo Platinum operates a significant portion of the total installed flotation capacity in the PGM industry, which is installed at 20 operating plants across the Bushveld. PGM flotation has...Read More
Factors driving entrainment in flotation systems and implications for ...
Entrainment is a non–selective form of flotation recovery which degrades the selec- tivity of the flotation ..... Froth flotation can be considered the most important mineral separation technique of the past century. ..... A study of chromite entrainment in PGM processing found entrainment factors sim- ilar to those reported by...Read More
XRF Helps Meet the Platinum Group Metals Mining Challenge
Dec 2, 2014 ... PGM ore is mined typically underground but sometimes in open-cast pits. The process from extraction to final product involves crushing and milling the ore into fine particles, concentrating the particles using froth flotation followed by drying and smelting at high temperature, removing iron and sulfur, and...Read More
Process development of the Nkomati PCMZ base metals sulphide ore
concentrate, grading at 45%, was extracted from the flotation rougher tailings via a spiral plant. These promising results ... In addition to the nickel, copper, cobalt and PGM products, this ore also contains a significant amount of .... Ineffective Froth drainage; solid density to cleaners and re-cleaners too high. •. Too much mass...Read More
Centenary of Flotation Symposium - The AusIMM - Publications
Case Studies on the Performance and Characterisation of the Froth Phase in Industrial Flotation Circuits, G Tsatouhas, S R Grano and M Vera. 208.2 KB .... Technological Solution to Improvement in PGM Recovery, Upgrade Ratio and Cr2O3 Reduction of UG 2 Ore, D M Minnaar, D S Smit and A N Terblanche. 240.2 KB.Read More
FLSmidth - Flotation
Flotation. FLSmdith supplies globally recognized brands of WEMCO and Dorr-Oliver flotation machines with over 57,000 cells installed worldwide. Flotation Froth. Flotation...Read More
Why Catalytic Convertors Contain PGMs - MGS Precious Metals Blog
Jan 9, 2018 ... Besides jewelry, platinum group metals (PGMs) are known for their use in catalytic converters for automobiles and other equipment that use combustion engines. The demand for catalytic converters is so strong that it affects the whole PGM market. But why do these devices require expensive precious...Read More
Dr Francois Vos - Google Scholar Citations
A review of pyrrhotite flotation chemistry in the processing of PGM ores. JD Miller, J Li, ... A new small-scale test to determine flotation performance–Part 1: Overall performance. CF Vos, W Stange, ... An empirical model for the degree of entrainment in froth flotation based on particle size and density. L Wang, K Runge,...Read More
INCAMineral - Oxford Instruments
INCAMineral is ideal for the study of liberation of copper, lead, zinc and nickel ores as it quickly identifies and characterises the distribution of sulfides and the non-sulfide gangue. It measures the extent of liberation, and provides vital data to optimise the froth flotation process. Gold and PGMs. By analysing samples from...Read More
Mineral profile - British Geological Survey
minerals collect in froth at the surface and are removed as a metal concentrate. This process is known as froth flotation. The greatest losses of PGM occur during crushing, milling and flotation, mainly due to the highly variable mineralogy and mode of occurrence of PGM, which may be associated with base-metal sulphides,...Read More
DELKOR BQR Flotation Cells - TENOVA
DELKOR BQR flotation cells achieve optimum operation through purpose-designed levels of solids suspension, air rate adjustment, easy froth-cone ... that can be used in roughing, scavenging, cleaning and re-cleaning, unit and pilot cell applications to process copper, zinc, PGMs, phosphates, graphite slags and effluents...Read More
Overview of PGM Processing July Ndlovu - Anglo American Platinum
Crushing &. Milling. Froth. Flotation. Drying and smelting in electrical furnace. Air/O2 blown. Converters. Sulphur. Removal. • Nickel. • Copper. • Cobalt Sulphate. • Sodium Sulphate. • Nickel sulphate. Base Metal Refining. (incl. Magnetic Concentration for some players). Precious Metal. Refining. Base Metal Refining. • PGMs.Read More
A New Hybrid Flotation-Microfiltration Cell
Frothing, with the appropriate dosage of surfactant and/or frother, should be controlled. Backflushing (gentle) had no important influence and rather improved the operation. The results for loaded zeolites were better at normal pH level, where flotation should be operated. The cell's efficiency, expressed as flotation recovery,...Read More
MEI Blog: Flotation '17 Conference Diary
Nov 27, 2017 ... Turbulence plays a complicated role in froth flotation: it is desirable because it helps to promote bubble-particle interactions in the pulp, and to increase the specific surface ..... Victor Ross, representing Mintek, South Africa, showed how a high shear cavitation device has improved the flotation of fine PGMs.Read More
Mine-to-mill optimisation: effect of feed size on mill ... - SRK Consulting
concentrates may be reground to a. Froth flotation is a very important mineral concentration process that is used to recover a vast array of different minerals containing valuable commodities such as copper, lead, zinc, nickel, molybdenum, tungsten, silver, gold, phosphate and potash. In the flotation process, ore is ground.Read More
Zircon-rutile-ilmenite froth flotation process (Patent) | SciTech Connect
Apr 21, 1992 ... ... amine cationic collector to the mixture to float the activated zircon; subjecting the mixture containing the added acid solution, the fluoride ions, the starch and the cationic collector, to froth flotation; and withdrawing a float product comprising the zircon and a sink product comprising the ilmenite and rutile.Read More
Study on the surface chemistry behavior of pyrochlore during froth ...
froth flotation. (Thesis format: Integrated Article) by. Saeed Chehreh Chelgani. Graduate Program in Geology. A thesis submitted in partial fulfillment of the requirements ... Separation of pyrochlore from its associated minerals is typically accomplished by froth flotation. The surface ..... 36. 3.7.1. Platinum group metals (PGM) .Read More