Acid Leaching Tests on a Highly Oxidized Copper Ore in Yunnan . Yang Zhao. 1,a. 1. Faculty of Land Resource Engineering, Kunming University of Science and Technology . Kunming, China . a. [email protected], Siqing Liu. 2, b. 2. State Key Laboratory of Complex Nonferrous . Metal Resources Clean Utilization . b. [email protected] Tingting Li1,e

A leaching study was conducted on South America oxidized copper ore assaying 3.10% Cu, and the process parameters were optimized, including leaching temperature, leaching time, acidconsumption, liquid-solid ratio and stirring rate. The results show that copper leaching rate of 92.02% were achieved under the optimized conditions as ...

S o-oxidizing microorganisms bioleached Cu ore by producing H 2 SO 4 from S o.. Cu bioleaching was more efficient than leaching with pH 2.0 acid solution. • Up to 88% of Cu in the ore was bioleached. • Most efficient Cu bioleaching was from S o added uniformly to ore.. HPGR-crushed ore did not leach faster than jaw-crushed ore.

Leaching of sulfide-oxidized copper concentrate of the Udokan deposit ore with a copper content of 37.4% was studied. In the course of treatment in a sulfuric acid solution with pH 1.2, a copper leaching rate was 6.9 g/kg h for 22 h, which allowed extraction of 40.6% of copper.

A required amount of 75 g/L. sulphuric acid solution was used and 5 g of the ground copper oxide ore with a solid to liquid. ratio of 13%. Leaching parameters such as …

technology leaching of oxidized copper ore Study on Leaching Test of Oxidized Copper Ore in Yunnan. Acid Leaching Tests on a Highly Oxidized Copper Ore in Yunnan Yang Zhao 1,a 1 Faculty of Land Resource Engineering, Kunming University of Science and Technology Kunming, China a, Siqing Liu 2, b 2 State Key Laboratoryplex Nonferrous Metal Resources …

LEACHING OXIDIZED COPPER ORES; EFFECT OF STRENGTH OF ACID IN LEACHING SOLVENT 1 By John D. SuIlivan 2 and G. L. Oldri~ht3 INTRODUCTION In leaching oopper ores knowledge of the rate of dissolut!on of the copper mine rals an of t he impurities i s des irable. With knowledge of these two factors and data as to what

Report issued by the U.S. Bureau of Mines on the leaching of copper ores. The different strengths and cycles of solvents to extract impurities from the ore are presented. This report includes tables and graphs.

A required amount of 75 g/L. sulphuric acid solution was used and 5 g of the ground copper oxide ore with a solid to liquid. ratio of 13%. Leaching parameters such as …

Acid Leaching Tests on a Highly Oxidized Copper Ore The extraction of copper from highly oxidized copper ore in sulfuric acid solutions was examined in Yunnan Province. During the leaching of copper, the leaching rate of cuprous concentration was affected by various parameters such as particle size, leaching time, the weight ratio of liquid to solid and the …

The article emphasizes the urgent need of heap leaching in the current geotechnical conditions. The application prospects for heap leaching are connected with preliminary oxidation of refractory ore. Another important requirement is geo-engineering typification of ore through geotechnical mapping. An alternative of cyanide in gold leaching is chlorine compounds.

Technology, Brazil 347. ... in particular by leaching oxide copper ores with sulphuric acid and subsequent downstream processing of the leachate through solvent extraction followed by the electrowinning of copper (SX-EW). At present, heap leaching is a well-known industrial process for the treatment of minerals with oxidized species and ...