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America A Mini-Review on Metal Recycling from Spent Lithium Ion ...
America About 99% of the Li, 91% of the Ni, 92% of the Co, and 94% of the Mn were dissolved under the following conditions: 1.5 mol·L −1 citric acid concentration, 20 g·L −1 S/L ratio, 0.5 g·g −1 reducing agent content, 80 °C temperature, and 120 min reaction time. The selective precipitation method was then used to separate and recycle the ...



America Air Pollution Aspects of Emission Sources: Iron and Steel ...
America ----- 14 IRON AND STEEL MILLS ash, efficiencies ranged from 60 to 90 per cent, whereas when freshly formed fly ash was created by burning powdered fuel, efficiencies ranged from 93 to 99 per cent. A revised pilot model slag wool filter, which is described, has been con- structed for 750 to 1000 cfm gas flow based on previous results.


