Anode mud is a mud like substance that adheres to the surface of the anode substrate, precipitates at the bottom of the electrolytic cell, or suspends in the electrolyte during electrolytic refining. Anode mud enriches the vast majority or majority of precious metals and some rare elements in ores, concentrates, or fluxes, thus possessing high comprehensive recovery value. For example, the value of gold and silver in the anode mud produced by copper and lead electrolytic refining can offset the processing costs of the entire electrolytic refining process. In the process of aqueous solution electrometallurgy, insoluble sludge that adheres to the surface of the residual anode or precipitates at the bottom of the electrolytic cell. It is generally gray with a particle size of about 100-200 mesh, and most of its components exist in the form of metals, sulfides, selenium tellurium compounds, oxides, elemental sulfur, and basic salts. Anode mud is rich in precious metals, rare metals, and other valuable metals. Extracting these metals from anode mud can achieve significant economic benefits. For example, copper can be recovered from the anode slime of electrolytic copper and elements such as gold, silver, selenium, and tellurium can be extracted. During the electrolytic refining or extraction of soluble anodes, in addition to the main metal, there are also small or trace amounts of other metals or elements present in the anode as elemental, alloy, or compound forms. When the anode undergoes polarization, these metals or elements become anode slime due to the following reasons: (1) their equilibrium potential is positive for the anode potential, so they cannot ionize and enter the electrolyte; (2) Although it can ionize and enter the electrolyte, it immediately forms an insoluble salt with the electrolyte and precipitates from it; (3) Partial oxidation forms insoluble compounds or elemental elements. The generated anode mud exists as dispersed fine powder, either adhered to the anode surface, precipitated by gravity at the bottom of the electrolytic cell, or even suspended in the electrolyte. Therefore, in order to ensure the normal operation of the electrolysis process, it is generally necessary to regularly brush and wash the adhered anode mud from the anode, remove the precipitated anode mud from the bottom of the tank, and filter and separate the suspended anode mud from the electrolyte. The obtained anode mud mass divided by the percentage of the corresponding anode mud mass is the anode mud rate