Sand casting copper anode mold technique

Abstract

The invention relates to a sand mold casting copper anode mould technique which is characterized in that the following steps are included: a. the modeling materials according to the parts by weight: 1part of 70-140 meshes of refined quartz sand, 0.05-0.1 part of kaolin, 0.01-0.005 part of graphite powder, 0.05-0.08 part of 2.4-2.6m of soluble glass, 0.005 part of 20-30 percent of sodium hydroxidesolution, a proper amount of 98 percent of ethanol and colophony which are evenly mixed, sanded, modeled, modified and hardened by CO2; b. the processes of demoulding, drying, painting the coating and mould assembling are carried out; c. the anode molten copper which is smelted to be eligible in an anode smelting furnace is casted into a box for temperature preservation for 20-40 hours and is demoulded; d. the finished product can be obtained after desanding and polishing. The invention leads the traditional sand mold casting technique to be used for the casting of the copper anode mould andutilizes the handpicked modeling materials so as to ensure that the shortages of air holes, gas pockets, cold shut, and the like, of the casted copper anode mould are avoided basically, the manufacture cost is low and the quality of the anode copper can be improved.

Description

(1) Technical field: [0001] The invention relates to a mold manufacturing process, in particular to a sand casting copper anode mold process. (two) background technology: [0002] The anode mold is used for casting anode copper, which is a large number of main consumption molds in the smelting industry. Its performance directly affects the output, cost and quality of copper smelting. At present, major domestic copper smelting enterprises are using or trying copper anode molds instead of cast iron anode molds; and casting copper anode molds generally use cast iron anode master molds to pour copper anode molds. However, the manufacturing cost of the cast iron anode master mold is high, the production cycle is long, and the service life is short; at the same time, due to the large gas content in the anode copper liquid, the metal mold has almost no air permeability, so the surface of the copper anode mold cast with the cast iron anode master mold generally has pores Defects s...

AI Technical Summary

Problems solved by technology

However, the manufacturing cost of the cast iron anode master mold is high, the production cycle is long, and the service life is short; at the same time, due to the large gas content in the anode copper liquid, the metal mold has almost no air permeability, so the surface of the copper anode mold cast with the cast iron anode master mold generally has pores Defects such as air pockets and cold shuts affect the quality of anode copper, and the rate of electrolytic residual electrodes remains high

At present, similar domestic enterprises have not explored the production process of directly using anode copper liquid to cast copper anode molds in sand molds