A follow up program in a continuous vat leaching pilot plant at SGS Lakefield Research confirmed recovery of copper in the 75% range in less than 72 hours and that the CVL pilot plant could be scaled-up to a commercial sized plant. The pilot plant test yielded cathode copper plates that graded 99.97% purity. METALLURGY -SULPHIDE DEPOSIT, GETTY ...
Vat leaching is operated in a batch fashion by small scale miner, but continuous vat leaching is currently available in the market. Picture 1: Leaching VATs Construction (Rectangular) Picture 2: Leaching VATs Operational (Circular) Sketch 1: Simple Vat leaching …
Hi We are planning a VAT leaching for HMS rejects of copper oxide ore. We are stuck at design and would value inputs. We are planning for a 5000 tons holding capacity for the VAT and feed grade is 1% copper. Size of feed passing 20 mm. Would there be any channeling effect in the VAT as we are p
Continuous Vat Leaching; combining the efficiency of agitated tank leaching with the simplicity of heap leaching, Continuous Vat Leaching is revolutionizing the mineral processing industry. A no compromise solution to traditional leaching methods. Engineered to perform in the most demanding environments – extreme heat, high rainfall, lack of water and freezing temperatures are no longer a ...
The latest development in vat leaching is a continuous unit, invented by Dan Mackie of Innovat Ltd., called an Ecovat. Feed to the rectangular tank is via a slurry stream or dry ore by conveyor. If dry ore is fed, it is slurried by solution injected in the bottom of the vat. This solution fluidizes and mixes the slurry by means of periodic ...
The Copper Leaching and Copper Cementation Process. ... cannot be effectively treated by heap or vat leaching. In this process, dissolution is effected by keeping the finely divided ore particles in suspension in the solvent. ... Essentially the only difference in the batch and continuous leach is in the feed and discharge mechanics, i.e., a ...
Continuous Vat Leaching (CVL) CVL is a mechanical leaching system developed by Innovat Mineral Processing Solutions. The basic concept is to provide, by means of an elevated head tank, intermittent fluidisation of the ore in a swimming pool-like vat. This intermittent fluidisation provides high intensity leaching, and through hydraulic means ...
Copper 1/7 LEACHING OF COPPER ORES OVERVIEW. The use of continuous vat leaching is a preferred method of leaching copper ore over both agitated tank leaching and heap leaching. Due to the high capital and operating costs, agitated tank leaching …
Optimal condit ions f or a continuous leaching process were established, in which solutions with a mass concentration of copper ions greater than 25 g /dm 3 were obtained.
Copper (II) oxide was prepared by an isothermal oxidation method from the cement copper.The Vat leaching train at the oxide plant will comprise 15 concrete vats measuring 46mx36mx14m each. The ore loaded vats will be flooded with sulphuric acid to recover the copper for further processing. Ore at the sulphide plant will undergo comminution ...
Introduction to INNOVAT Continuous Vat Leaching. This video details the installation of an INNOVAT Continuous Vat Leaching plant with a basic description of the process mechanics. See more at innovat.ca.
The vat is continuously fed, and moves via intermittent fluidization to the discharge point where it is dewatered, detoxified, and ready for stacking. With the ability to accommodate all ores, and any leaching chemistry, INNOVAT's Continuous Vat Leaching system is applicable to all leach projects whether gold, silver, copper, rare earth ...
the present invention relates to a method for leaching a mineral from an ore containing said mineral wherein a leaching solution is passed upwardly through a downwardly flowing bed or ore. the leaching solution is passed through the ore under conditions of quiescent flow whereby the mineral is dissolved from the mineral ore and is withdrawn from the upper portion of a vessel containing said ...
Figure 7 - Copper Cathode Produced By utilizing Continuous Vat Leaching, the residence time was reduced from 80-100 days for heap leaching, to less than 72 hours. This rapid leach time was accompanied by an overall Cu recovery of more than 75%, and the knowledge that leaching could be further hastened without penalty to recovery.
6,000 t/d using vat leaching to dissolve the copper. Continuous improvements allowed the process by the end of 1991 to increase to 9,500 t/d in ten vats of 4,000 t each in a counter-current leach circuit. The ore was crushed to less than 6 mm and loaded into the vats. Then, they were leached in an up-flow mode at a rate of 375 l/h/m2.
Extensively piloted on gold and copper ores. CONTINUOUS VAT LEACHING (CVL) P R O P RIE TARY CH S U IO N S P R O P RI ETARYTE CH SOL U TI O N S. 6 Frank has more than 50 years' experience in the mining industry in a range of roles such as Director, Managing Director, Senior ExplorationGeologist, Pit
patented Continuous Vat Leaching (CVL) process which is far more efficient than traditional leaching methods. Developed in the late 1980's, a 5 TPD pilot plant was installed at Process Research Ortech to prove the economics for gold, silver and copper. In the mid 1990's, a full scale 150 TPD gold
Continuous vat leaching process Download PDF Info Publication number US3777003A. US3777003A US00068690A US3777003DA US3777003A US 3777003 A US3777003 A US 3777003A US 00068690 A US00068690 A US 00068690A US 3777003D A US3777003D A US 3777003DA US 3777003 A US3777003 A US 3777003A Authority US United States Prior art keywords ore leaching