| A newly leaching method of copper from waste print circuit board was established by using hydrochloric acid-n-butylamine-copper sulfate mixed solution.The conditions of leaching were optimized by changing the hydrochloric acid,n-butylamine,copper sulfate,temperature and other conditions using copper as target mimics.The results indicated that copper could be leached completely after 8 h at 50℃,hydrochloric acid concentration of 1.75 mol/L,n-butylamine concentration of 0.25 mol/L,and copper sulfate mass of 0.96 g.Under the conditions,copper leaching rates in waste print circuit board samples was up to 95.31% after 9 h.It has many advantages such as better effects,low cost,mild reaction conditions,leaching solution recycling. |
