After carrying out a froth flotation separation the products are as shown in Table 1 Using this data calculate a Ratio of concentration b % Metal Recovery c % Metal Loss d % Weight Recovery or % Yield e Enrichment Ratio Table 1 Grade/recovery performance of a hypothetical copper ore flotation process
Optimization of gold recovery by selective gold flotation for copper gold pyrite ores 2001 Minerals Engineering Show abstract Gold flotation is often overlooked as a processing option as the precious metal is viewed as being associated with the sulphide particles present in the ore even when a proportion of the gold is free Gold does
During the Cu Mo ore flotation using an optimally dispersed microemulsion of the combined collector agent a collective Cu Mo concentrate was obtained with a copper content of % with an
The application of flotation on a reasonable scale within the gold mining industry began after the introduction of water soluble flotation collectors specifically xanthates and dithiophosphate collectors that allowed differential flotation of sulfide minerals Gold occurs in a number of minerals and the most important of these is metallic gold and the gold metal alloys
They are copper and gold ores but copper and gold minerals are not indicated in the table due to low concentrations These pH values are within the pH range typically used in copper gold flotation Preparation of mineral suspensions Mineral suspensions were prepared using Brisbane tap water and made of pure clay minerals non clay
South Georgian complex copper gold ores J Liipo1 M Hicks1 V P Takalo1 A Remes1 M Talikka1 S Khizanishvili2 and M Natsvlishvili2 Synopsis The complexity of copper gold ores leads to large variations in recoveries and concentrate grades in the processing plant Detailed chemical and mineralogical studies revealed considerable
Gold flotation experiments are performed on samples of gold bearing ore obtained from two deposits with conditions that simulate a continuous process Technological advantages of this developed scheme and a flotation mode of gold microdispersions are shown in comparison with the basic technology
The goal of the work was to study processes of recovery of nonferrous metals and gold from old pyrite flotation tailings of copper zinc ores The novelty of the work is an application of a combination of sulfuric acid leaching leaching with biogenic ferric iron and biooxidation for separate metal removal from oxidized and sulfidic phases 2
The copper in these ores is represented by cuprite native copper antlerite and tenorite The gold is associated with cuprite as an auricupride and several sulphosalts The major Therefore flotation of oxide copper ores using sulphidization method can improve by reducing turbulence and attrition within the flotation cell [3]
Hydrothermal This type contains a variety of ores including a gold pyrite ores b gold copper ores c gold polymetallic ores and d gold oxide ore usually upper zone of sulphide zones The pyrite content of the ore varies from 3% to 90% Other common waste minerals are quartz aluminosilicates dolomite etc
In order to investigate the effect of particle size on the flotation performance in the separation of copper gold lead froth products of various size fractions were collected as a function of flotation time The optimum dosage of potassium dichromate K 2 Cr 2 O 7 and sodium diethyldithiocarbamate DDTC were determined by flotation conditional tests Six
1 Introduction Since the 1950s the development and application of heap and in situ leaching by acidophilic chemolithotrophic microorganisms which obtain energy from the oxidation of sulfide minerals and use carbon dioxide for constructive metabolism has been a major approach for processing the low grade copper ores Rossi 1989 This technology
The classical first order model Model 1 was considered to be most reasonable for fitting the recoveries of copper gold and lead as a function of flotation time during the separation flotation process For the copper gold and lead the maximum fitting recoveries were all obtained with the size fraction of −43 20 μm and the flotation
vi Contents Flotation ofPGM ContainingOres 25 Introduction 25 Flotation properties ofPGMfromsulphide dominated deposits 25 Reagentpractice in flotation ofPGMsulphide dominated ores 27 Reagentpractice in flotation ofCu NiandNiores withPGMas the by product 31 Reagentpractice in flotation ofPGMfromchromium
Carbonaceous ores Flotation can be carried out to remove impurities or to pre concentrate the ore before the hydrometallurgy stage copper gold ores A dithiophosphate collector at an alkaline pH must be used controlled by lime or soda ash if the pyrite content in the ore is low Oxide copper gold ores
Gold flotation is used for ref ractory gold bearing ores and products containing 1 3 g/t of gold During flotation process ing of polymetallic ores gold is
The objective of this study was to assess the effect of lime and soda ash as pH modifiers on the flotation of a copper gold ore mixed with kaolinite at different concentrations For the flotation experiments air flow rate impeller speed flotation time and other flotation reagents were kept constant and the flotation outcomes were explained
Russia s largest Malmyzh deposit of porphyry copper gold ores is located in Khabarovsk krai and there are also promising Au and Cu ore occurrences there [1 2] A detailed study of Cu porphyry type ores will help to expand the copper resource base the advancement of which depends on the creation of an efficient processing technology []
Even when the recovery of the gold and silver values from such ores by flotation is low it may still be advantageous to float off the minerals which interfere with cyanidation roasting and cyaniding or possibly smelting the concentrate for the extraction of its precious metal content; this is followed by cyanidation of the flotation tailing
Porphyry copper ore deposits belong to the main sources of copper molybdenum as well as gold silver and a number of concomitant elements such as rare precious and trace elements Countries with developed copper industries and Uzbekistan is one of them are working on establishing major processing sites which are to process huge amounts of porphyry copper
The copper lead zinc ores have an origin similar to copper zinc and lead zinc ores the exception being those ores that contain copper lead and zinc as the principal economic minerals In addition some of these ores contain significant amounts of precious metals and more rarely cobalt and nickel
Gold flotation experiments are performed on samples of gold bearing ore obtained from two deposits with conditions that simulate a continuous process Technological advantages of this developed scheme and a flotation mode of gold microdispersions are shown in comparison with the basic technology
