leaching pper chalpyrite ore book

PDF A STUDY OF LEACHING OF COPPER OXIDE ORE BY

The Democratic Republic of Congo copper oxide ore containing mainly malachite was leached in sulphuric acid The effects of leaching time pH stirring speed and temperature on

Influence of grain size on chalcopyrite ore leaching in

The influence of ore grain size on the degree of leaching and acid consumption was examined The formation of gypsum on limestone results in the comminution of the initial raw material during leaching The grain size of chalcopyrite was found to have no

35 No 9 Uranium Extraction Technology

The cover picture shows the in situ uranium central processing facility Hobson Uranium Project Everest Mineral Corporation Karnes County Texas United States of America By courtesy of Lanmon Aerial Photography Inc Corpus Christi Texas

chalpyrite ore process

leaching of chalcopyrite cnki In oxidation leaching of chalcopyrite from Dexing copper ore using thiobacillus ferrooxidans at Ag dosoges of 0 16 g kg and 0 32 g kg of feed the leaching ratio for 21 days can be increased from 28 2 in the

Heap Leaching

Heap leaching of gold and silver ores is conducted at approximately 120 mines worldwide Heap leaching is one of several alternative process methods for treating precious metal ores and is selected primarily to take advantage of its low capital cost relative to other methods relative to other methods

Chapter 6 Copper Production Technology

Chapter 6 Copper Production Technology The last boomin technological innovation forthe copper industry occurred in the first two dec ades of this century whenopen pit mining flo tation concentration and the reverberatory smelter were adapted to porphyry copper

Acid leaching of oxide–sulfide copper ore prior the flotation – A

453 Acid leaching of oxide–sulfide copper ore prior the flotation – A way for an increased metal recovery Miroslav D Sokić1 Vladan D Milošević1 Velizar D Stanković2 Vladislav Lj Matković1 Branislav R Marković1 1Institute for Technology of Nuclear and Other Mineral Raw Materials Belgrade Serbia

CHLORIDE HYPOCHLORITE OXIDATION AND LEACHING OF

Chloride–hypochlorite oxidation and leaching of refractory sulfide gold concentrate 65 Fig 3 Particles size analysis of gold concentrate Fig 4 XRD analysis of gold concentrate obtained by flotation Table 1 Major elements composition of the ore and floated

The process design of gold leaching and carbon in pulp circuits

The process design of gold leaching and carbon in pulp circuits contaminants These are removed by thermal regeneration of the eluted carbon typically in a rotary kiln at temperatures of 650–750 C Regeneration is carried out in a steam atmosphere to minimize

Bioleaching of Copper SpringerLink

Abstract Natural bioleaching has been taking place for almost as long as the history of the world but it is only in the last few decades that we have realized that bioleaching is responsible for acid production in some mining wastes and that this bacterial activity can be used to liberate some metals

Leaching of a low grade copper nickel sulfide ore 1 Key parameters impacting on Cu recovery during column bioleaching

1 Leaching of a low grade copper nickel sulfide ore 1 Key parameters impacting on Cu recovery during column bioleaching H R Watling1 A D Elliot 1 M Maley 2 W van Bronswijk2 and C Hunter3 1 AJ Parker Cooperative Research Centre for Integrated Hydrometallurgy Solutions CSIRO

Mineralogical Characterization of Chalcopyrite

Chalcopyrite CuFeS 2 is the most important copper ore comprising approximately 70 of copper reserves in the world 1 2 In metallurgical applications chalcopyrite is mainly subjected to pyrometallurgy treatment after concentration by a flotation process 3 4

Oxygen pressure leaching of copper from primary

Abstract The leaching of primary porphyry chalcopyrite ore under simulated solution mining conditions was studied using a packed bed reactor A mathematical model incorporating the intrinsic leaching kinetics of chalcopyrite and pyrite grains the pore diffusion of

Solvometallurgical process for extraction of copper from chalcopyrite and other sulfidic ore

extraction of copper from chalcopyrite 41 42 However these systems were in general water rich processes In this paper we describe a green solvometallurgical process for the extraction of copper from sulfidic ore minerals with the emphasis on chalcopyrite 3

Bio Heap Leaching of Primary Copper Sulfide Ore by

JOGMEC has been carrying out the study on primary copper sulfide ores leaching for recovering copper economically and efficiently by heap leaching In our study we have been using the primary copper sulfide ore produced in an IOCG deposit The ore is

Processing of chalcopyrite ore by heap leaching and

This study explored the processing of chalcopyrite ore through heap leaching followed by flotation Crushed and agglomerated chalcopyrite ore was subjected to bacterially assisted leaching at ambient temperature in columns that ranged in height from 1 m to 5 m

Effects of turbomilling parameters on the simultaneous

Effects of turbomilling parameters on the simultaneous grinding and ferric sulfate leaching of chalcopyrite Washington D C U S Dept of the Interior Bureau of Mines 1991 OCoLC 609335521 Material Type Government publication National government Book

Hydrometallurgy

Hydrometallurgy aims to compile studies on novel processes process design chemistry modelling control economics and interfaces between unit operations and to provide a forum for discussions on case histories and operational difficulties Topics covered of

Passivation of chalcopyrite during the leaching with

In this work the process of the chalcopyrite leaching in sulphuric acid solution was investigated Sodium nitrate was used as oxidant in the leaching process Chemical reactions of leaching and their thermodynamic possibilities are predicted based on the

Comparative study on the selective chalcopyrite

Abstract This study evaluates different bioleaching treatments of a molybdenite concentrate using mesophilic and thermophilic bacterial cultures Further studies on the chemical leaching and the electrochemical behavior of the MoS 2 concentrate were carried out concentrate were carried out

Minerals Free Full Text Accelerating Copper Leaching

This work investigates the effect of an agglomeration and curing pretreatment on leaching of a copper sulfide ore mainly chalcopyrite using mini columns in acid nitrate chloride media Ten pretreatment tests were conducted to evaluate different variables namely the

A Review on Novel Techniques for Chalcopyrite Ore

1 2 1 Flotation Separation Valuable mineral in an ore such as chalcopyrite ore can be separated from each other and from worthless gauge minerals by the froth flotation process The process was developed in Australia at the start of the 20 th Century to treat the primary sulfidic silver lead zinc ore at Broken Hill Woods and Doyle 2000 Many approaches were pursued to solve the sulfide

Bioleaching

Bioleaching is the extraction of metals from their ores through the use of living organisms This is much cleaner than the traditional heap leaching using cyanide Bioleaching is one of several applications within biohydrometallurgy and several methods are used to recover copper zinc lead arsenic antimony nickel molybdenum gold silver and cobalt

PDF Effect of Pretreatment on Leaching Primary Copper

nbsp 0183 32 The aim of this study was to improve the dissolution of copper sulfide ore composed mainly of chalcopyrite 1 21 wt and bornite 0 54 wt using a pretreatment before leaching The effect of the pretreatment on copper sulfide dissolution was investigated using