Crude tin refining slag salvaging device and crude tin refining arsenic, iron, copper and antimony removing method

The invention discloses a crude tin refining slag salvaging device and a crude tin refining arsenic, iron, copper and antimony removing method. The device consists of a tin refining pot, a stirring machine and a slag salvaging machine; the tin refining pot is a steel crude tin refining pot; the stirring machine is mounted on one side of the tin refining pot through stirring machine mounting foot frames and can vertically rotate around a stirring machine rotating device to put a stirring paddle into or move the stirring paddle out of a tin liquid layer in the tin refining pot; the slag salvaging machine is arranged on the other side of the tin refining pot through slag salvaging machine mounting foot frames, and can vertically rotate around a slag salvaging machine rotating system to put aslag salvaging machine scum inlet into or move the slag salvaging machine scum inlet out of a scum layer of the tin refining pot. According to the device and the method, the slag salvaging device is adopted to replace manpowe