硫化镍二次电解阳极泥,在500℃燃烧脱硫后,含铂、钯、金约1.5—2％,镍、铜、铁45％以上,尚需进一步富集后,才能进行贵金属的分离,提纯。过去,脱硫料加20％硫酸,在550℃焙烧3.5小时,焙砂用稀硫酸浸出,浸出条件为:起始酸度120克/升,固∶液=1∶6,80—90℃搅拌浸出二小时。贵金属可富集2.5 Nickel sulphide secondary electrolytic anode slime, after combustion desulfurization at 500 ℃, contains about 1.5-2% platinum, palladium and gold, more than 45% nickel, copper and iron. After further enrichment, the precious metal can be separated and purified . In the past, the desulfurization material plus 20% sulfuric acid, calcined at 550 ℃ for 3.5 hours, baking calcined with dilute sulfuric acid leaching conditions: initial acidity 120 g / liter, solid: liquid = hour. Precious metals can be enriched 2.5