what is the role of Depressant in froth floatation method Share with your friends Share 31 In the froth flotation process we want some substances to settle down and some substances to float Now naturally the sulphide of the substance we want to extract will float and the gangue or useless material will sink However sometimes the ore we Estimation of platinum flotation grades from froth image data Marais C Aldrich C (2011) Article Features extracted online from froth images on flotation plants are potentially useful to the development of advanced control for flotation systems provided that these features can be related to the key indicator variables of the plant such as

THE PRIMARY PRODUCTION OF PLATINUM GROUP METALS

Wet chemical treatment known as froth flotation produces a concentrate which is dried and smelted in an electric furnace at temperatures over 1 500C A matte containing the valuable metals is transferred to converters to remove iron and sulphur PGMs are then separated from the base metals nickel copper and cobalt and refined to a high level

The estimation of metallurgical parameters of flotation process from froth visual features is the ultimate goal of a machine vision based control system In this study a batch flotation system was operated under different process conditions and metallurgical parameters and froth image data were determined simultaneously Algorithms have been developed for measuring textural and physical froth

extraction crushing grinding and flotation of platinum Large electrically-driven ball mills used for grinding ore to a size suitable as Ground ore is directed to a series of froth flotation cells in which hydrophobic platinum-group-metal operations in South Africa that extract ore from deep delivered to the crusher (3) crushing and grinding characteristics such as Bond work

Froth flotation and gold extraction - manhattan gold silverul 23 2014 froth flotation is method of gold extraction using water and surfactantsearn about how the froth Read More Copper Froth Floatation Froth flotation circuit design and basic testwork froth flotation is a very important mineral concentration process that is used to recover a

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 Development of PGMs and Chrome Extraction Circuit from l

The flotation method of separation of multicomponent mixtures

The hydrogen dissolved in the pulp is adsorbed on the particles of platinum group metals lowering their electrochemical potential and increasing the hydrophobicity the latter promotes the release of their froth The extraction of these metals from Nickel concentrate to pyrometallurgical and 1 RF patent 2028188 Pneumatic flotation machine 2

Gold Extraction and Recovery Processes Various methods such as gravity concentration flotation panning pyrometallurgy cyanidation etc are available for the extraction of gold metal from its ores Amongst these methods cyanidation is the most common method

How is platinum extracted from its ore SlideShare Sep 19 2014 Froth flotation is a method of separating materials on the basis of their physical properties for instance affinity for water or density Froth flotation is a technique used globally to extract ore Froth flotation forms a bubbly mix of valuable ore hard to make

Flotation Frothers What is the Function of Frothers The function of frothers in flotation is that of building the froth which serves as the buoyant medium in the separation of the floatable from the non-floatable minerals Frothers accomplish this by lowering the surface tension of the liquid which in turn permits air rising through the pulp to accumulate at the surface in bubble form

Froth Flotation and Gold Extraction - MGS Precious Metals Blog Jul 23 2014 Most methods of water-based gold extraction are dependent on gold's lack of buoyancy to work However froth flotation uses a different property of gold to separate it from ore Froth flotation is a method for separating hydrophobic materials (which will not mix with

Mining and processing of PGMs - Royal Bafokeng Platinum It may take up to six months from the extraction of ore to the refining phase The PGM-rich particles float to the surface and are removed as a soapy-looking froth it in converters to remove iron and sulphur from it increasing its PGM content techniques to separate and purify the PGMs from gold and small amounts of

Froth flotation is widely used for separating base metal sulphide minerals in complex ores One of the major challenges faced by the flotation of these ores is the ever varying grade and mineralogy as the ore is exploited (Kabuda et al 2011) As in any mineral processing operation the efficiency of the

Flotation cell technology and circuit design—an Anglo Platinum perspective Pre 1980s—Mineral extraction circuits were charac- terized by multiple small flotation machines (typically 1m3) with short residence times employing a single

Froth Flotation of a Particular ore

froth flotation For this study mixtures of thiol collectors were used in batch froth flotation tests in an attempt to identify synergism between the different collectors on flotation performance of a typical platinum ore from the Merensky reef Flotation performance was evaluated in terms of grades

Froth Flotation – Summary For a complete explanation of froth flotation see the later Froth Flotation section INTRODUCTION Froth flotation Froth flotation is a common method to extract a certain type of mineral from ore while depressing the amount of undesired minerals in Froth flotation -

Synopsis As part of its strategic and critical minerals program the U S Bureau of Mines investigated methods for beneficiating and recovering platinum-group metals (PGM) from ores found in the Stillwater Complex the only primary resource of platinum-group metals located in the United States

Froth Floatation Methods For Gold Silver Crusher Machine We are a large-scale manufacturer specializing in producing various mining machines including different types of sand and gravel equipment milling equipment mineral processing equipment and building materials equipment

Following this the flotation process takes place which involves mixing the powdered lead ore with water the addition of pine oil and the introduction of air bubbles and agitation forms a froth of oil containing the lead ore on the surface HOW IS LEAD OBTAINED? The froth is skimmed and then filtered to remove

In the froth floatation process the role of the depressants is to separate two sulphide ores They do so by preventing one ore from forming froth In this process we want some substances to settle down and some to float Now ideally we want the sulphide of the substance that we wish to extract

Stage 2 Froth flotation The powdered ore is mixed with a special paraffin oil which makes the copper mineral particles water repellent It is then fed into a bath of water containing a foaming agent which produces a kind of bubble bath This is a rare chance to see a mill and flotation building before the roof is built (Courtesy of Codelco )

Because the froth flotation process is strict with grinding fineness pulp density flotation reagent the flotation plant operators must inspect the flotation conditions during the operation of flotation machine Here are some common problems of froth flotation process and their and solutions 1

The use of higher pH flotation leads to a significant increase in the degree of extraction of platinum palladium and Nickel The concentrate also find slightly higher levels of MgO Summary of average degrees of extraction of these minerals in the concentrates in the study at two pH levels taken from table 4 are given in table 5 P R I m e