Microwave pretreatment of a double refractory gold ore

Double refractory gold ores, such as Barrick’s Goldstrike ore, contain both pyrite and carbonaceous matter and the latter results in the loss of gold from solution during cyanide leaching.

Microwave pretreatment of a double refractory gold

Double refractory gold ores, such as Barrick’s Goldstrike ore, contain both pyrite and carbonaceous matter and the latter results in the loss of gold from solution during cyanide leaching. One possible remedy is to roast the ore and thus oxidize the pyrite and remove the organic carbon.

Microwave pretreatment of a double refractory gold

2007-9-1  With regards to the application of microwaves to refractory gold ores, Haque, 1987a, Haque, 1987b has studied the microwave pretreatment of refractory sulphidic ores and achieved gold extractions of over 98%. However, there is no information published on the microwave processing of the double refractory gold ores.

STUDY ON MICROWAVE PRETREATMENT OF

By using the heating feature of microwave, it has shown from condition tests that the gold leaching recovery can be improved from 74% to more than 90% if the gold concentrates is treated for 5 minutes in a microwave oven at 450℃. Therefore, the gold leaching recovery of cyanide residue of more than 86% can be obtained in leaching plant. The results indicate that microwave pretreatment to

pretreatment of refractory ores prior to gold leaching

Pretreatment Process on Refractory Gold Ores with As. refractory gold pretreatment Microwave pretreatment of a double refractory gold ore Double refractory gold ores, such as Barrick's Goldstrike ore, contain both pyrite and carbonaceous matter and the latter results in the loss of gold from solution during cyanide leaching.

Review Pretreatment Process on Refractory Gold Ores

mainly about the refractory gold leaching easily through arsenic removal to expose gold, changing the composition, physic-chemical and electro-chemical properties of the ore. Currently, there are four main methods of pretreatments of refractory gold ores with As. Pretreatment options for deal-ing with refractory gold ores are illustrated in Fig

Pretreatment Process on Refractory Gold Ores with As

Gold ores are considered refractory if gold extractions from a conventional cyanidation process are less than 80% even after fine grinding. 1) Arsenic-bearing refractory gold ore has stones extremely difficult to deal with. In the stones, gold is locked up in arsenic mineral matrix as the form of microscopic or submicroscopic lattice.

Pretreatments Applied to Refractory Gold Ores

It is necessary to apply a pretreatment process to obtain high gold recoveries (> 80 percent) from refractory ores by cyanide leaching. Many studies have been conducted on the oxidation of

Pretreatment of a refractory arsenopyritic gold ore

2015-3-1  1. Introduction. The recovery of precious metals from refractory ores has been widely investigated due to depletion of the deposits from which gold can be easily leached (Abrantes and Costa, 1996, Ofori-Sarpong et al., 2011).There are numerous causes and degrees for refractory behavior: the presence of carbonaceous matter, passivating films, finely disseminated gold particles in solid solution

Microwave energy for mineral treatment processes—a

1999-7-1  This review is a brief account of R&D results generated from microwave-assisted mineral treatments tests. The R&D results demonstrate that microwave energy has potential in mineral treatment and metal recovery operations such as heating, drying, carbothermic reduction of oxide minerals, leaching, roasting/smelting, pretreatment of refractory gold ore and concentrate, spent carbon

Microwave pretreatment of a double refractory gold

2021-1-28  Abstract Double refractory gold ores, such as Barrick’s Goldstrike ore, contain both pyrite and carbonaceous matter and the latter results in the loss of gold from solution during cyanide leaching. One possible remedy is to roast the ore and thus oxidize the pyrite and remove the organic carbon. In this research, microwave roasting of a double refractory gold ore was investigated as an

Pretreatment of arsenic-bearing gold ore with

Pretreatment of arsenic-bearing gold ore with microwave-assisted alkaline leaching Pretreatment of arsenic-bearing gold ore with microwave-assisted alkaline leaching Ma, Hongzhou; Yan, Chao; Wang, Yaoning 2016-06-01 00:00:00 In this paper, the removal of arsenic from arsenic-bearing gold ore through air oxidation and sodium hydroxide leaching with microwave irradiation was studied.

pretreatment of refractory ores prior to gold leaching

Pretreatment Process on Refractory Gold Ores with As. refractory gold pretreatment Microwave pretreatment of a double refractory gold ore Double refractory gold ores, such as Barrick's Goldstrike ore, contain both pyrite and carbonaceous matter and the latter results in the loss of gold from solution during cyanide leaching.

Leaching of Refractory Gold Ores by Microwave

The present paper attempts to assess the effects of microwave irradiation on the leachability of refractory gold ores. Characteristics of the crystal structure and microstructure of the ores were determined by x-ray structural analysis (XRD) and scanning electron microscopy (SEM) before and after microwave irradiation. Compared to conventional processes, microwave leaching processes are highly

The Use Of Microwave In Refractory Ore Benification

equipment to leach gold ore using microwaves Mining. Method for pretreating refractory gold ore by employing microwave The invention relates to a method to pre-treat a hard-to-leach gold ores

微波焙烧预处理难浸金矿物_图文_百度文库

2011-3-22  Study on Pretreatment of Refractory Gold Ore by Microwave Roasting Method WEI Li1, QU Zhan-long1, PIAO Hui-jing2 (1. College of Materials Science and Engineering, Shenyang Ligong University, Shenyang, Liaoning 110168, China; 2.

Microwave Heating Applications in Mineral Processing

2011-12-10  Currently, EMR Microwave Technology, Fredericton, N.B., Canada is conducting pilot-scale microwave pretreatment tests on various kinds of refractory gold concentrates, ores and tailing. Al-Harahsheh et al., 200554, have investigated the leaching kinetics of chalcopyrite under the influence of microwave treatment. Comparison of the amount of

难处理金矿预处理方法研究现状-《有色金属科学与工程》

TIAN Qinghua,WANG Hao,XIN Yuntao,et al.Research status of pretreatment of refractory gold ore[J].,2017,(02预):86-90. 点击复制 难处理金矿预处理方法研究现状 ( /HTML )

Optimizing the alkaline oxidation pretreatment of a

2018-9-28  Whereas, gold ores are considered refractory if gold recoveries are low through cyanidation (usually < 80% and in some cases: < 50%). In recent years, due to the high price of gold and the depletion of easily leachable gold minerals, more attention has been paid to the recovery of gold from refractory ores, which do not respond to direct

陈菓 云南民族大学 化学与环境学院 X-MOL

Leaching of refractory gold ores by microwave irradiation: comparison with conventional leaching. Metallurgist, 57(7-8): 647-653, 2013. (SCI收录) [9] Guo Chen, Jin Chen, Lijun Liu, C. Srinivasakannan, Jinhui Peng*. Synthesis and Characterization of BaCO3

pretreatment of refractory ores prior to gold leaching

Pretreatment Process on Refractory Gold Ores with As. refractory gold pretreatment Microwave pretreatment of a double refractory gold ore Double refractory gold ores, such as Barrick's Goldstrike ore, contain both pyrite and carbonaceous matter and the latter results in the loss of gold from solution during cyanide leaching.

The Use Of Microwave In Refractory Ore Benification

equipment to leach gold ore using microwaves Mining. Method for pretreating refractory gold ore by employing microwave The invention relates to a method to pre-treat a hard-to-leach gold ores

微波焙烧预处理难浸金矿物_图文_百度文库

2011-3-22  Study on Pretreatment of Refractory Gold Ore by Microwave Roasting Method WEI Li1, QU Zhan-long1, PIAO Hui-jing2 (1. College of Materials Science and Engineering, Shenyang Ligong University, Shenyang, Liaoning 110168, China; 2.

我国黄金资源综合利用现状与展望

2017-7-11  Research process of pretreatment technologies of refractory gold ores[J].Gold Science and Technology,2014,22(4):129-134. Research on Novel Ultrasonic and Microwave Assisted Pretreatment of Copper Anode Slime with High Lead Content[D

refractory ore crushing equipment Belgian Shepherd

Keywords arsenic bearing gold ore pretreatment process refractory gold ore The process of crushing or decomposition before gold leaching is called in the world about 2/3 gold resource belongs to the difficult processing ores and...

HEAT TREATMENT OF IRON ORE AGGLOMERATES WITH

heat treatment of iron ore agglomerates with microwave energy a thesis submitted to the graduate school of natural and applied sciences of middle east technical

Optimizing the alkaline oxidation pretreatment of a

2018-9-28  Whereas, gold ores are considered refractory if gold recoveries are low through cyanidation (usually < 80% and in some cases: < 50%). In recent years, due to the high price of gold and the depletion of easily leachable gold minerals, more attention has been paid to the recovery of gold from refractory ores, which do not respond to direct

Minerals Free Full-Text Methods of Ore

The comminution of ores consumes a high portion of energy. Therefore, different pretreatment methods of ores prior to their comminution are considered to reduce this energy. However, the results of pretreatment methods and their technological development are scattered in literature. Hence, this paper aims at collating the different ore pretreatment methods with their applications and results

陈菓 云南民族大学 化学与环境学院 X-MOL

Leaching of refractory gold ores by microwave irradiation: comparison with conventional leaching. Metallurgist, 57(7-8): 647-653, 2013. (SCI收录) [9] Guo Chen, Jin Chen, Lijun Liu, C. Srinivasakannan, Jinhui Peng*. Synthesis and Characterization of BaCO3

杨洪英 东北大学

2019-1-18  姓名 杨洪英 性别 女 出生年月 1960.01 政治面貌 党员 职称 二级教授 / 博士生导师 职务 所长 办公电话 024-83673932,13889803669 电子邮箱 [email protected] 学习工作经历: 1978.2~1982.1 中南大学 攻读本科 1997.8~2001.3 东北大学 攻读博士