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Metals recovery

Metal passivation Metal pickling Metal powders Metal recovery... [Pg.609]

Microbial leaching of metals from ores is a promising adjunct to more aggressive metal recovery technologies (77), but is generally achieved by oxidative processes that generate very acidic waters. It seems unlikely that similar approaches will be of much value in removing contaminant metals and metalloids from soils. [Pg.36]

Oxygen-Evolving Anode. Research efforts to iacorporate the coated metal anode for oxygen-evolving appHcations such as specialty electrochemical synthesis, electro winning, impressed current, electrodialysis, and metal recovery found only limited appHcations for many years. [Pg.120]

Phosgene can be employed in a variety of metal-recovery operations, eg, in the recovery of platinum, uranium, plutonium, and niobium (69—73). Phosgene has been proposed for the manufacture of aluminum chloride, beryllium chloride, and boron trichloride (74—76). Phosgene has been patented as a stabilizer, either by itself or in combination with thionyl chloride, for Hquid SO2 (77). [Pg.315]

Other variations of the fuming process under development by the Commonwealth Scientific and Industrial Research Organization in Clayton, Austraha, promise even greater efficiencies of metal recovery (5). [Pg.58]

If a neutral chelate formed from a ligand such as acetylacetone is sufficiently soluble in water not to precipitate, it may stiH be extracted into an immiscible solvent and thus separated from the other constituents of the water phase. Metal recovery processes (see Mineral recovery and processing), such as from dilute leach dump Hquors, and analytical procedures are based on this phase-transfer process, as with precipitation. Solvent extraction theory and many separation systems have been reviewed (42). [Pg.393]

DispEcement. In many of the appHcations of chelating agents, the overall effect appears to be a displacement reaction, although the mechanism probably comprises dissociations and recombinations. The basis for many analytical titrations is the displacement of hydrogen ions by a metal, and the displacement of metal by hydrogen ions or other metal ions is a step in metal recovery processes. Some analytical pM indicators function by changing color as one chelant is displaced from its metal by another. [Pg.393]

Eig. 9. Retec cell for heavy-metal recovery from wastewaters. [Pg.81]

Incineratlon/Thermal Treatment R21 Metals Recovery - Electrolytic R22 Metals Recovery - Ion Exchange... [Pg.48]

F01 Liquid Injection R23 Metals Recovery - Acid Leaching... [Pg.48]

F11 Rotary Kiln with Liquid Injection Unit R24 Metals Recovery - Reverse Osmosis... [Pg.48]

FI 9 Other Rotary Kiln R26 Metals Recovery - Solvent Extraction... [Pg.48]

Remco Engineering - Manufacturer of systems for water treatment, waste water recycling, heavy metal recovery and filtration. Provides some good general information plus vendor specific, http //www.remco.com. ... [Pg.440]

Mineral Processing Slurry dilution Metal recovery by solvent extraction... [Pg.598]

Farge combustion works Farge glass works Farge paper pulp works Head works Fime works Magnesium works Manganese works Metal recovery works Mineral works Nitrate and chloride or iron works... [Pg.755]

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