PDF Publication Title:
Text from PDF Page: 092
100.00 90.00 80.00 70.00 60.00 50.00 40.00 30.00 20.00 10.00 0.00 0 2 4 6 8 10 12 Time (hr) Ni Cu Zn Sn Sb Pd Ag Au Figure 6.14 Bromine leaching of shredded waste printed circuit boards in the presence of 5% HCl (0.77M Br2, 1.17M NaBr, 400 RPM, 23.5 °C and natural pH) To characterize the leaching residue from the triplicate experiments, a SEM-EDS analysis was conducted. Prior to the SEM analysis, the leaching residue was first ground and then rinsed by deionized water and acetone in order to eliminate the bromine effect and liberate the leaching residue of the waste printed circuit boards. Fig. 6.16 shows the elemental composition of Point A which is found in Fig. 6.15. This figure shows the presence of bromine, silver and silicon. As shown in Fig. 6.17 and Fig. 6.18, it is obvious that there is a gold particle having a particle size of 50 μm. The reason that the gold was not dissolved during the leaching process is that the gold was not well liberated. Since the residue was further ground before the SEM analysis, the gold was exposed and shown in Fig. 6.17. Copper and tin can be also identified as shown in Fig. 6.19. In sum, the results from SEM-EDS are in accordance with the ICP-MS analysis. 79 Metal dissolved (%)PDF Image | HYDROMETALLURGICAL TREATMENT OF E-SCRAP
PDF Search Title:
HYDROMETALLURGICAL TREATMENT OF E-SCRAPOriginal File Name Searched:
Cui_mines_0052E_11489.pdfDIY PDF Search: Google It | Yahoo | Bing
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
IT XR Project Redstone NFT Available for Sale: NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Be part of the future with this NFT. Can be bought and sold but only one design NFT exists. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Turbine IT XR Project Redstone Design: NFT for sale... NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Includes all rights to this turbine design, including license for Fluid Handling Block I and II for the turbine assembly and housing. The NFT includes the blueprints (cad/cam), revenue streams, and all future development of the IT XR Project Redstone... More Info
Infinity Turbine ROT Radial Outflow Turbine 24 Design and Worldwide Rights: NFT for sale... NFT for the ROT 24 energy turbine. Be part of the future with this NFT. This design can be bought and sold but only one design NFT exists. You may manufacture the unit, or get the revenues from its sale from Infinity Turbine. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Supercritical CO2 10 Liter Extractor Design and Worldwide Rights: The Infinity Supercritical 10L CO2 extractor is for botanical oil extraction, which is rich in terpenes and can produce shelf ready full spectrum oil. With over 5 years of development, this industry leader mature extractor machine has been sold since 2015 and is part of many profitable businesses. The process can also be used for electrowinning, e-waste recycling, and lithium battery recycling, gold mining electronic wastes, precious metals. CO2 can also be used in a reverse fuel cell with nafion to make a gas-to-liquids fuel, such as methanol, ethanol and butanol or ethylene. Supercritical CO2 has also been used for treating nafion to make it more effective catalyst. This NFT is for the purchase of worldwide rights which includes the design. More Info
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
Infinity Turbine Products: Special for this month, any plans are $10,000 for complete Cad/Cam blueprints. License is for one build. Try before you buy a production license. May pay by Bitcoin or other Crypto. Products Page... More Info
CONTACT TEL: 608-238-6001 Email: greg@infinityturbine.com (Standard Web Page)