treating acid consumption of copper ore

Investigation of Affecting Parameters on Heap LeachingKnow More

Feb 04 2017 0183 32 Heap leaching method is known as cheap method for copper extraction Presence of clay and acid consumer waste minerals are the most critical issues because they may bring out the process from economic mode For reduce acid consumption and increasing copper extraction in heap leaching method about 3 tons sample was taken randomly from different low grade zon...

Minerals Free FullKnow More

In this respect it is not only the ore minerals that should garner interest for metal recovery but importantly gangue mineralogy needs to be understood particularly from the perspective of operational costs potential acid consumption and consequent copper recoveries even minor changes in gangue mineralogy can considerably impact acid consumption and copper recovery and change the acid...

Electrorefining of CopperKnow More

solution The electrolyte is copper sulfate 07 molar and sulfuric acid 2 molar and the way in which the purification of the copper occurs can be seen by considering the metals likely to be found as impurities 3 Ag Au and Pt are more noble than copper and therefore will not dissolve anodically...

Flowsheet considerations for copper cobalt projectsKnow More

The mineralogy of ores in the area is typically associated with high gangue acid consumption during the leaching process This has resulted in acid availability to the area being constrained and acid prices have risen accordingly Agitation leach circuits typically have a tight water balance...

Acid mine drainageKnow More

Acid mine drainage acid and metalliferous drainage AMD or acid rock drainage ARD is the outflow of acidic water from metal mines or coal min Acid rock drainage occurs naturally within some environments as part of the rock weathering process but is exacerbated by large-scale earth disturbances characteristic of mining and other large construction activities usually within rocks...

Hydrometallurgical treatment of Haib copper oreKnow More

80 per cent in three days Acid consumption was variable amongst the samples but averaged about 20 kilograms per tonne of ore kg/t In 1993 Van Eck and Lurie Pty Ltd ran some bucket leach tests on low-grade Haib ore from an old adit The head sample assayed 0184 per cent Cu After 3 days of acid leaching copper recoveries ran 8 to 12...

How Does Acid Affect Copper HunkerKnow More

Hydrochloric and phosphoric acid don t oxidize metals well and won t dissolve copper Sulfuric acid has a medium oxidizing ability and will dissolve copper over time With a high oxidative strength nitric acid will completely dissolve copper turning it green and then...

The metallurgic treatment of an ore for gold silver leadKnow More

Sulphuric acid is employed The alloy is granulated and placed in cast iron boilers into which are thrown 2 4 times its weight of strong sulphuric acid and the whole heated to ebullition Sulphate of silver is formed and S02 evolved = the S02 is utilized for making sulphuric ac Acid of about 160 Sp Grav is added after a bit and the whole...

Copper Oxide Ore Heap Leaching Testwork and ScaleKnow More

So the actual net acid consumption is that consumed by the gangue minerals Copper Oxide Ore Heap Leaching Testwork Scale-Up 8 Sample Pag Notes 1 This is intended to gain early information about the quality of potential process water and to provide...

Copper Ore Types Sulfides vs Oxides An Investor sKnow More

These copper oxide ores are usually leached using sulfuric acid to liberate the copper minerals into a solution of sulfuric acid laden with copper sulfate solution...

A statistical approach to the experimental design of theKnow More

It must be recognized that there is a difference between the total acid consumption of the ore ore-dependent and that which reacts with the copper phases phase-dependent Of a total of 985kg/t acid added 223kg/t was used for copper dissolution...

Recovery of Copper by Solution Mining MethodsKnow More

Arizona extracted copper from a broken and fragmented zone located above a closed underground block-caving operation Figure 3 where nearly 75 of the leachable copper is present as chalcocite Carstensen and Neira 1997 A dilute sulfuric acid-ferric sulfate solution 05 H 2 SO 4 was applied using perforated pipes laid out over...

Pre feasibility study in hydrometallurgical treatment ofKnow More

Jan 01 2020 0183 32 For hydrometallurgical treatment the economics of the process is dependent on ore mineralogy ore grade acid consumption copper extraction efficiency and process unit operations The ore analysis for the low-grade chalcopyrite ore at Sarcheshmeh is presented in Table 1 On average about 20 million tons of low grade average of 028 Cu grade...

Dissolution of copper and iron from malachite ore andKnow More

all of the copper present in the malachite ore employed Table 2 displays experimental conditions By simply treating with H2O2 and then adjusting the pH of the solution Fe OH 3 was produced Then copper ions were precipitated as copper sulfate pentahydrate 31 Effect of time and temperature on the dissolution of copper and iron form ore...

PDF THE ART OF HEAP LEACHING Lee JOHNKnow More

Agglomeration of copper oxide ore with concentrated H2SO4 has become an industry standard due to the duel benefits of improved percolation and pre-lixivation of acid onto the ore No doubt it will also become the industry standard with nickel laterite and zinc...

Acid treatment of copper sulfide middlings and rougherKnow More

Abstract The beneficial effect of leaching of carbonate gangue from flotation middlings and rougher concentrates with sulfuric acid prior their final flotation has been presented This process was effectively applied within the existing flotation circuit in order to facilitate floatability of difficult-to-treat carbonate black shale copper or...

PDF An Overview of Treatment of CopperKnow More

Copper-bearing gold ores have proved difficult to treat in conventional cyanide leaching process owing to prohibitively high consumption of cyanide by readily soluble copper minerals interfering...

From Ore to Finished ProductKnow More

Copper - From Beginning to End Copper is a major metal and an essential element used by man It is found in ore deposits around the world It is also the oldest metal known to man and was first discovered and used about 10 000 years ago And as alloyed in bronze copper-tin alloy about 3000 BC was the first engineering material known to man...

UNDERSTANDING ACID CONSUMPTION AND ITSKnow More

data for copper recovery from an associated copper ore INTRODUCTION Acid consumption during copper leaching of oxide ores is a very important issue Acid consumption can determine whether or not a project is economically and technically feasible The cost of supplying acid to a leaching operation is closely tied to the acid consumption the...

Energy and Environmental Profile of the US MiningKnow More

511 Copper Ore Mining Copper is commonly extracted from surface underground and increasingly from in situ operations In 2000 the principal mining States in descending order Arizona Utah New Mexico and Montana accounted for 99 percent of domestic production Copper was also recovered at mines in three other Stat...

Techniques for Collectors Cleaning native copperKnow More

Unfortunately with some specimens it s almost as if the matrix is part of the top layer of copper Specimens from the Seneca 1 have been the most frustrating to clean for me You might reduce or eliminate the iridescence on the acid cleaned copper by quickly drying it once out of the final rinse My results have been mixed...

Acid LeachingKnow More

Metallurgical ContentAcid Leaching Process FlowsheetCHEMISTRY OF COPPER DISSOLUTIONPREPARATION OF THE COPPER ORESTORAGE AND FEEDING THE ORECOPPER LEACHINGCHARGING THE TANKSCOPPER PRECIPITATIONACID SUPPLYPRODUCTION OF SULPHURIC ACID The treatment of copper ores both oxides and sulfides by means of flotation...

Sulfuric acid leaching of Igarapé Bahia goldKnow More

The high copper grade in the Igarapé Bahia Brazil gold-copper ore restricts the direct application of the classical cyanidation process Copper oxide and sulfide minerals react with cyanides in solution causing high leach-reagent consumption raising processing costs and decreasing gold recovery...

Energy Efficiency Copper HydrometallurgyKnow More

energy consumption for copper extraction processes from ore in the ground to final salable cathode product ie mining through electrorefining or electrowinning to - compare process routes - identify and prioritize opportunities for energy reduction and - support the Global Mining Initiative ICMM and sustainable development initiatives...

Choosing and Troubleshooting Copper ElectroplatingKnow More

Feb 22 2011 0183 32 Acid Copper Solutions Acid copper baths are simple formulations containing copper ions additives and either sulfate or fluoborate ions along with the corresponding acids Because of their acidity they cannot be plated directly onto active metals such as zinc die castings and steel for they will produce non-adhering immersion deposits...

Copper and Drinking Water from Private Wells WellsKnow More

Copper may be combined with other metals to make brass and bronze pipes and faucets Copper compounds are also used as agricultural pesticides and to control algae in lakes and reservoirs All living organisms including humans need copper to survive therefore a trace amount of copper in our diet is necessary for good health...

Development and optimization of mixed sulphide/oxideKnow More

the copper minerals because they are not collectable with xanthates Woods 2003 Since the beginning of the operations in 2004 millions of tons of mixed oxide/sulphide copper-gold ores with a high gangue acid consumption GAC were disposed on stockpiles as they were uneconomic to treat through the old circuit configuration This...

Extraction of Copper at Elevated Feed ConcentrationsKnow More

g/L Cu adds 31 g/L ac The higher the acidity the more the extraction reaction is inhibited Ultimately with more acid stripping takes place A solution is to use a stronger copper extractant one which will continue to extract copper at higher acidity but which in turn requires more acid to be stripped In order to extract more copper...

Investigation of Affecting Parameters on Heap LeachingKnow More

For reduce acid consumption and increasing copper extraction in heap leaching method about 3 tons sample was taken randomly from different low grade zon After homogenization and spelling into small parts bottle roll tests were carried out to achieve maximum copper recovery and acid consumption in a short time at pH= 1 11 and 12...

Technical Document Acid Mine Drainage PredictionKnow More

generating acid on Forest Service lands and that drainage from these mines is impacting between 8 000 and 16 000 kilometers of streams US Forest Service 1993 In addition to the acid contribution to surface waters AMD may cause metals such as arsenic cadmium copper...