Method for improving bottom slag extraction efficiency of zinc pot

The invention provides a method for improving the bottom slag extraction efficiency of a zinc pot, which comprises the following steps of: moving a crown block I to a neutral position on the transmission side of the zinc pot, hoisting a slag extraction pump by a hook mechanism on the middle side of the crown block I, and confirming that equipment is basically kept in a balanced state; then slowly moving a slag extraction pump to the upper part of the zinc pot, preheating the pump by utilizing the temperature of the zinc pot, and slowly putting the pump into the zinc liquid in the zinc pot; starting a slag pumping pump to carry out slag pumping operation; the second crown block is controlled to carry out zinc feeding operation while slag pumping operation is carried out; by increasing the number of the crown blocks and the hooks, multiple operations can be carried out at the same time, the slag pumping efficiency is improved, and the problems that only one crown block works in the existing bottom slag pumping