| http://www.w3.org/ns/prov#value | - Generally, the feedstock will contain between about 50 and 130 g/L of nickel, and 3 to 30 g/L of cobalt, more typically 60 to 120 g/L of nickel and 6 to 15 g/L of cobalt, with minor or trace amounts of such other metals as iron and aluminum, and which could also contain one or more of the metals zinc, copper, manganese and magnesium, at a concentration of between about 0.1 and 15 g/L but more pref
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