China Nonferrous Metallurgy

The traditional rolled anode plate has the problems of short service life, high cost, low intensity, etc., the new fence type aluminum based composite anode plate of Pb-0.3% Ag-0.12% (Ca+Sr) is developed, which has reduced the anode plate cost and improved the strength and corrosion resistance of anode plate. To realize the industrial application of this new type of composite anode plate, further optimization is made for it. By means of pilot test, by comparison of 15d electrolysis production indicators, anode slime etc. between traditional anode plate and fence type coated anode plate of different flat wire widths, and comparison of the cathode zinc products of the fence type coated anode plate of different bar clearances, the following conclusions are obtained: compared with the traditional anode plate, the narrow strip fence type coated composite anode plate can make large improvement in electric current efficiency, cell voltage and cathode zinc quality; the narrow strip anode plate has larger effective active area than that of wide strip, however, in the later stage cleaning of anode slime, it is more difficult to clean narrow strip anode plate, which is prone to bending; the too large bar clearance of fence type coated composite anode plate will result in the appearance of “#” traces on the cathode zinc, affecting the output and electric efficiency, the proper bar clearance is 9~14mm.