Patent ID: 8584925
Filing Date: 2013-11-19
Classification: B23K,C22B

Abstract:
1. A method of processing dross to recover molten solder entrained therein, comprising: (i) removing dross from a solder-bath, wherein the dross comprises entrained solder, (ii) placing the dross from (i) in a receptacle, (iii) adding a liquid active additive comprising dimer acid to the receptacle containing the dross to form a dross-active additive mixture, wherein the dimer acid (a) has a carbon number in the range of about 24 to 60, and (b) is a dimerized saturated or unsaturated fatty acid; and (iv) heating the dross-active additive mixture from (iii) above the melting point of the solder to thereby assimilate dross in the liquid active additive and release molten solder from the dross.