B25 ordinary cupronickel alloy is a structural copper-nickel alloy, which has high mechanical properties and corrosion resistance, and has good workability under pressure in hot and cold states, and its mechanical properties and corrosion resistance are higher than those of B5 due to its high nickel contentB19 high. Crushed cupronickel alloy waste, acid leaching N902 extraction to separate copper ions, P204 extraction to separate zinc ions, residual nickel sulfate solution in aqueous phase process**Non-ferrous metals in cupronickel alloy waste. The experimental results show that the optimal process conditions are that the preliminary mechanically crushed white copper alloy is put into the sulfuric acid solution for reaction to obtain the leaching solution; Copper ions in the leachate were first separated using the copper extractant N902. Material name: B25 ordinary cupronickel
Standard: (GB T 5231-2001) Extractant N902 has good selectivity for copper. In contrast to 1:1, the pH is 057. The volume concentration of N902 was 50%, and the mixing time was 90 s, and the copper extraction rate reached 9936%。The reverse extraction operation was performed with 2 mol l of sulfuric acid, and the equilibration time was only 30 s, and the reverse extraction rate reached 9968%；The extractant P204 was used to extract and separate the zinc ions in the subsequent aqueous solution, and the %04 of the lower strip was 402p2 is the value HP synthesis time is 1 min, and the extraction rate of zinc ions after 5-stage extraction is 9973%, and almost no nickel in the aqueous phase is extracted, and the selective separation effect is good. 
Chemical composition: nickel + cobalt Ni + Co: 240-26.0 Fe: 05 manganese mn: 05 zinc zn: 03 Silicon Si: 015 mg mg: 005 lead pb: 0001 sulfur s: 001 Carbon C: 005 phosphorus p: 001 Copper Cu: Residual impurities: 18 tin sn: 003
After 40 s of mixing with 1 mol l of sulfuric acid and mixing of 1 mol l, the reverse extraction rate of the zinc-rich organic phase was 100%. The whole process completes the separation of the main ions of copper, nickel and zinc, and obtains three products: copper sulfate, zinc sulfate and nickel sulfate.