zoom Hover Full Screen Merrill Crowe in Leaching Gold / Silver ProcessingGravity Recovery & Au/Ag Leaching – CCD Merrill Crowe Plant & Refinery: This complete hydrometallurgical process plant is for recovering precious metal from oxide or very low sulphide ore deposits containing silver and/or gold more commonly. The turnkey plant is for the recovery by cyanidation leaching from ores absent of preg-robbing carbonaceous material. The initial gravity circuit will extract any coarse, slow leaching gold and silver. The simple Merrill-Crowe technology best deals with high grade gold and/or silver deposits.This simple metallurgical concentrator includes single stage crushing, conveying, primary grinding, spiral classification, gravity concentration, slurry pumping, cyanide leaching tanks, counter-current decantation circuit, Merrill-Crowe precipitation and refinery.With this simple flowsheet, you will recover silver and/or gold into a bullion bar.The gravity recovery components of this circuit can easily be removed in cases where laboratory testing has revealed there are no GRG precious metals in your ore.Our standard packages are for process plants of:25 Tonnes/Day = 1 Tonne/Hour50 Tonnes/Day = 2 Tonne/Hour100 Tonnes/Day = 4 Tonne/Hour250 Tonnes/Day = 10 Tonne/HourThis is a standard process plant which includes only the major components of the complete metallurgical flowsheet. A detailed engineering study is required to identify unforeseen omissions that may be required to design the optimum plant.Additionally, we offer two separate packages for plant tailings thickening/filtration and water treatment. Contact us for details. Category: Mineral Processing Plants - Gold, Silver, Copper, Zinc, Lead, etc, Ore Description Description911MPE offers all the major components of this complete process plant designed using these key design parameters:Coarse/Fine ore binVibrating Grizzly feederJaw crusherConveyor beltsWet reagent feederBall MillSpiral classifierSlurry pumpTrash screensAgitated Leach tanksSlurry pumpsThickenerMerrill-CroweRetortFurnaceCentrifugal concentrator (iCON i150)Shaker table (Quake 5VS3)Au grade = 15 g/tAg grade = 8 g/tROM = 100 mmJaw crusher F80 = 75 mmJaw crusher P80 = 12 mmSteel balls = 2.5″Steel balls charge = 2 tonneBall Mill F80 = 12 mmBall Mill P80 = 50 µmSpiral classifier overflow = 40%Leach circuit pulp density = 40%Leach Retention time = 48 hrWash water ratio = 3.5Thickener underflow = 55%Gold production = 336 g/daySilver production = 100 g/dayReagents used: NaOH, NaCN, Flocculant, Zinc DustProcess development testwork and detailed engineering are essential services 911Metallurgy Corp. offers separately. The equipment package described herein does not include any permitting, infrastructure, foundation, electrical, assembly, reagents/supplies or commissioning. These are all additional paid-for services we do offer if you need them.