Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Ching-Hsiang Hsu0
Date of Patent
November 23, 2021
0Patent Application Number
162940430
Date Filed
March 6, 2019
0Patent Primary Examiner
Patent abstract
The present invention provides an additive for tin stripping, comprising 0.1 to 20 wt % of copper corrosion inhibitor and 0.1 to 20 wt % of nickel corrosion inhibitor; wherein said weight percentage is based on the total weight of said additive. The present additive can be used with nitric acid conventionally used for metal-stripping for not only reducing the usage of nitric acid but also improving the efficiency of tin stripping. The present invention also provides a method for Tin recycle and a reaction tank for metal recycle. Both of them are favorable for satisfying the needs of metal recycle (especially, tin recycle) in the field.
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