美国目前从酸性的鎳、鈷稀溶液中富集鎳和鈷的过程如下(見附图):在酸性稀溶液中加入强碱氢氧化鈉和氢氧化鉀的混合物,其量足以使稀溶液中的鎳和鈷全部沉淀为氢氧化物,但是在超过中和溶液的游离酸所需碱量之外,对溶液中每一克当量鎳和鈷,碱量不得多于1.15克当量左右。然后在与水不混溶的有 The current process of nickel and cobalt enrichment from acid, dilute nickel and cobalt solutions in the United States is as follows (see attached): A mixture of a strong base of sodium hydroxide and potassium hydroxide in an acid dilute solution in an amount sufficient to reduce Nickel and cobalt all precipitate as hydroxides, but the amount of alkali should not exceed about 1.15 equivalents for each gram of nickel and cobalt in solution, in excess of the amount of alkali needed to neutralize the free acid of the solution. Then there is water immiscibility