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Copper Waste Dump Leaching - AusIMM

Copper waste dump leaching is growing in importance because of the.large tonnages up to 250,000 tonday of low grade waste rock available from open cut mining of copper deposits and proof that controlled leaching of copper from such dumps can be profitable. Overburden or waste rock, ranging in size from large boulders to fines, is...

In-situ and dump leaching technology Application to ...

The technology of in-situ and dump leaching, used widely by hydrometallurgists, can be applied with advantage to the exploitation of phosphate rock deposits especially those low in limestone. Nitric or hydrochloric acids of certain concentrations would be used instead of H2SO4 and the solutions obtained treated to remove radium and recover uranium and the lanthanides if desired, then ...

US4120935A - Dump leaching of copper - Google

US4120935A US05850,442 US85044277A US4120935A US 4120935 A US4120935 A US 4120935A US 85044277 A US85044277 A US 85044277A US 4120935 A US4120935 A US 4120935A Authority US United States Prior art keywords ore dump copper acid containing Prior art date 1976-06-04 Legal status The legal status is an assumption and is not a legal conclusion.

Study on preferential flow in dump leaching of low

Dump leaching is an efficient process for the use of lower-grade ores and a new process to deal with ores that cannot be handled by conventional technology. In the dump leaching process, unsaturated lean liquor solution flows in the ore bed where chemical reactions take place Sheikhzadeh, 2005.

PDF In situ and Dump Leaching of Phosphate Rock

Habashi proposed in situ, dump or vat leaching of phosphate rocks with dilute HNO 3 20 or HCl 10 to get a solution of monocalcium phosphate, and to allow recovering uranium and rare earths ...

Research on Enhancing Dump Leaching of Chalcopyrite by ...

In order to rationally utilize low grade copper ore and its waste resource,leaching test and reaction thermodynamic analysis were made of the enhancement of the dump leaching of chalcopyrite by pyrite.The results show the solution potential range required by pyrite ...

Rule of oxygen transmission in dump leaching - Journal ...

The results show that lack of oxygen in dump leaching is the critical factor of restricting leaching reaction. Pyrite is the primary oxygen-consuming mineral in bioleaching. When its content is too high, it needs a great deal of oxygen for reaction and competes for the finite oxygen with objective minerals, and thus the leaching velocity decreases greatly.

Dump leaching - Wikipedia

2020-4-22Dump leaching is an industrial process to extract precious metals and copper from ores.. Dump leaching is similar to heap leaching, however in the case of dump leaching ore is taken directly from the mine and stacked on the leach pad without crushing where, in the case of gold and silver, the dump is irrigated with a dilute cyanide solution that percolates through the ore to dissolve gold and ...

heapanddumpleachingheapand ...

heap and dump leaching ... half-word table heap and dump leaching high-temperature service ...

,dump leaching,,, ...

2018-10-1The leaching of phosphate ore with sulfuric acid produced by the oxidation of reductive sulfur with Thiobacillus is expected to provide a new way for the comprehensive utilization of low-grade phosphate gangue and protection of environment.

PDF In-Situ and Dump Leaching Technology

In-Situ and Dump Leaching Technology Application to Phosphate Rock

Effect of particles sedimentation during leaching on seepage ...

Based on the effect of particles sedimentation during leaching on the seepage characteristic of copper dumps,a mathematic model describing the law of particles sedimentation and seepage in dump was built.The theoretical solution of one-dimensional model ...

Heap leaching Could it be an alternative to

Additionally, dump leaching is an essential part of most copper mining operations and determines the quality grade of the produced material along with other factors.

Heat transfer law in leaching dump - Journal of Central ...

Abstract Based on the law of temperature changes in the leaching dump and the forming process of heat flux, the basic balance equation of heat flow in dump was established, the dissipated heat flow from dump to the atmosphere was analyzed to estimate the ...

WikiZero - Dump leaching

Dump leaching is an industrial process to extract precious metals and copper from ores.. Dump leaching is similar to heap leaching, however in the case of dump leaching ore is taken directly from the mine and stacked on the leach pad without crushing where, in the case of gold and silver, the dump is irrigated with a dilute cyanide solution that percolates through the ore to dissolve gold and ...

Science Break Metal Leaching | Mar. 2017 | CSEG

2020-5-19Dump leaching is relatively cheap, so is commonly used for low grade ores. After a year or two, a typical low grade ore will yield 50 of its metal in this way. Dump leaching operations, if not done properly, can result in significant environmental damage.

Geothermal energy for copper dump leaching

2020-4-21articleosti6607857, title Geothermal energy for copper dump leaching, author White, D H and Goldstone, L A, abstractNote This report evaluates the possibility of using geothermal energy to heat a sulfuric acid leaching solution for the purpose of faster and more efficient copper recovery from copper-containing minerals. . Experimental studies reported in the literature have shown ...

Impermeable Dump Leaching Chemistry - Telegraph

A collection of exams have been run on recent Becker drill samples from a drill hole in Kennecotts Chino J dump, close to Silver City, New Mexico, to acquire knowledge on the leaching chemistry of a comparatively impermeable sulfide copper waste dump. Vertical profiles have been manufactured from the moisture and soluble-salt content material the

and heap leaching --cnki

Column leaching, tank leaching and heap leaching, and also the recovery of silver from the leaching solution were studied with satisfactory results. Ag,Ag,

Heat transfer law in leaching dump - ...

2013-6-21Abstract Based on the law of temperature changes in the leaching dump and the forming process of heat flux, the basic balance equation of heat flow in dump was established, the dissipated heat flow from dump to the atmosphere was analyzed to estimate the ...

HEAP LEACHING TECHNIQUE in MINING - Euromines

2015-1-22Heap leaching is a tried and tested mining technique enabling the processing of different kinds of ores which could not otherwise be exploited under viable economic conditions. Modern day heap leaching, which has a relatively low level of energy consumption, is for example successfully used for the beneficiation of certain types of gold ores in ...