Gold & Precious Metals Recovery Cupellation Experiments On MBMM Motherboard Grindings

Here I continue to experiment with processing some ground up computer motherboard material that came from Jason at MBMM. I finally get the lead cupelled down that I used to wash precious metals off the MBMM motherboard material, with no more major bloopers. This material belongs to my friend Ken in BC Canada. He sent a bunch of motherboards to Jason at MBMM to be ground up in his hammer mills and separated on his shaker table. This is basically all the metals that were contained in the motherboards, including gold, silver an other precious metals. My task is to try to find a way to recover those valuable metals. Links below to Jason at MBMM processing similar material. Please visit http://mdpub.com/UrbanGoldMining/inde... for more information.

Here are some videos of Jason at MBMM grinding similar material:
   • Pure Metal Recovered From Electronics...  
   • Pulverizing Electronics, Recovering V...  

Materials and equipment used in these videos:
Lot of 6 - # 10 Mabor Cupel 2-3/8" https://amzn.to/3Wy6FTb
Kaowool Ceramic Fiber Insulation, 1" Thick https://amzn.to/3QyCbwB
High Density Graphite Conical Assay Mold https://amzn.to/3KMx9vc
Lynn Manufacturing Insulating Fire Brick https://amzn.to/3B96vYS
26" MegaCast™ Crucible Flask Tongs https://amzn.to/3qbBC0U
80000 BTU Propane Gas Forge Furnace Burner https://amzn.to/3AQnxLk
Digital Scale, Lan Sheng 200g x 0.01g Gram Scale https://amzn.to/3cURRMJ
Leather Forge/Welding Gloves Heat/Fire Resistant https://amzn.to/3cMUccL
Full Face Shield Heavy Duty Clear Face Shield https://amzn.to/3RuuuZc
#3 4KG MegaCast™, Foundry Clay Graphite Crucibles https://amzn.to/3DzNLEn
2lb Sulfur Powder Fine Reagent Grade https://amzn.to/3hv2bgx
5 Lbs 80 Oz Anhydrous Borax https://amzn.to/3hwbWeo
Duda Energy 5 lb. Sodium Nitrate 99+% Pure https://amzn.to/3N6vC4d