Tin solution retaining device for tin electrolytic refining

The utility model relates to a tin solution retaining device for tin electrolytic refining. The furnace comprises a furnace body, the furnace body comprises a support placed on a plane, a lower coverplate is horizontally installed at the upper end of the support, and a front cover plate, a rear cover plate, a left cover plate and a right cover plate are sequentially and vertically installed on the four edges of the lower cover plate to form a sealed cavity. An extraction mechanism is installed on the furnace body and comprises a tin pump installed on the furnace body through a tin pump and amotor support, and one end of the tin pump extends into a sealed cavity formed by the furnace body cover plate. A furnace body, an extraction mechanism and other mechanisms are adopted to be matched with an excellent heat preservation interlayer, circulating connection of a tin pot, a tin solution keeping device and a casting tank is achieved, the temperature of tin solution is accurately controlled within the temperature