Method for removing copper and recovering precious metal from high-copper lead slag through fire refining

The invention relates to a method for removing copper and recovering precious metal by fire refining of high-copper lead slag, which comprises the following process steps of: carrying out reduction smelting on the high-copper lead slag, coke and soda ash ore blending under a high-temperature condition, feeding the produced crude antimony alloy into a refining pot, adding antimony crystal salt, producing high-copper slag and refined antimony alloy, the high-copper slag is subjected to ball milling-shaking table reselection and returns to a copper smelting system to recover copper, the refined antimony alloy is subjected to oxidation blowing to produce an antimony trioxide product and a bottom lead alloy, the bottom lead alloy is separated through a vacuum distillation furnace to produce a lead-bismuth alloy and crude silver, lead and bismuth are recovered from the lead-bismuth alloy, and gold and silver are recovered from the crude silver through a silver separation furnace. According to the method, open-circu