The document summarizes the first copper pilot trials using continuous vat leaching. It describes how the process works using intermittent fluidization to achieve leaching kinetics comparable to agitated tanks at lower cost.

2021年2月5日 · Vat leaching is employed to extract copper from oxide or mixed oxide sulfide ores containing more than 0.5 percent acid-soluble copper. This method is used in preference to heap leaching if the ore material is not porous and crushing is necessary to permit adequate contact between the leach solution and the copper minerals.

Mantos Blancos oxide plant was commissioned in 1960 with a capacity of 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.

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 ...

Leaching is a hydrometallurgical process for the recovery of metals from ore bearing rocks. Leaching in situ has tremendous potential and seems to be the technology of the future. Copper from secondary sulfide minerals, like chalcocite and covellite, can not be easily dissolved within a short period of time using dilute acid. When an oxide

There are six different methods for leaching: heap, dump, in-situ, agitation, autoclave and vat. The leaching method used at each processing plant varies based on the ore chemistry and local conditions. Heap and vat leaching are common leaching methods.

The first process, vat leaching of high-grade copper oxide ore followed by EW of copper from the leach solution, produced low quality copper cathode at relatively high cost. In 1968 the tonnage of high-grade oxide ores was decreasing and vat leaching was on the decline.

Vat leaching of oxidised copper ore at Mantos … Currently, the only vat leaching operation for copper ore is located at Mantos Blancos mine in Chile (installed in 1961) (Figure 4). However, vat-leaching is well placed for a revival... WhatsApp: +86 18221755073

Valves play an important role in copper production processes like leaching, solvent extraction, and electrowinning by controlling liquid flows. The document discusses selecting optimal valve types and materials for different stages based on factors like acidity, pressure, and impurities to improve process efficiency and profitability.

2000年1月1日 · Since the production prototype continuous vat leaching pilot plant was installed at Ariel Resources in Costa Rica in 1995, the test results and lessons learned have been invaluable in plotting the future of this method.