Combined linear bearing and lifting actuator for smelting assembly

An assembly for smelting, the assembly comprising:

• a hopper adapted to contain raw smelting material;
• a pot including an opening in connection with the hopper, the pot containing a solvent and having a coated inner surface;
• at least one anode including a first end supported outside the pot and a second end partially submerged in the solvent in the pot;
• an electrical conductor contacting the first end of the at least one anode;
• a lifting actuator assembly including a body supported adjacent to the pot, a motor connected to a drive screw located in the body, the motor rotates the drive screw, a floating nut connected to the drive screw, a carriage plate rests on the floating nut and is connected to two linear bearing rails supported on the body that guides the carriage plate, the at least one anode is mounted on the carriage plate such that the motor drives the floating nut axially within the body to adjust a height of the at least one anode with respect to the pot;
• and
• four carriage pads each connected to the carriage plate, and a first pair of the four carriage pads is supported on a first one of the two linear bearing rails and a second pair of the four carriage pads is supported on a second one of the two linear bearing rails.