NOUFERROUS METALLURGICAL EQUIPMENT

A copper smelting enterprise in Guangxi faced issues such as low thermal utilization efficiency of its 450t tilting furnace, short service life of refractory bricks in the oxidation-reduction zone (only 7 months), poor operation of the exhaust gas system, and long material-adding and heating cycles (over 16 hours). The study, combining the characteristics of cold material processing technology, proposes a multi-dimensional optimization plan and verifies it through practical implementation.The main technical solutions focus on improving efficiency as follows: 1) implementing material-adding control based on raw material composition, optimizing the division of labor through dual material-adding doors; 2) adding 4 top combustion guns to enhance thermal field uniformity; 3) enabling high-low position switching of oxygen-deficient combustion guns; 4) installing cast copper water jackets for cooling in the oxidation-reduction zone; 5) modifying the exhaust gas system to use copper water jacket flues and adding water-cooled heat exchangers. Through a series of optimized modifications, the service life of the furnace refractory bricks was extended to 11~13 months, thermal utilization efficiency increased by 20 percentage points; the material-adding and heating cycle was shortened by 3.5~4 hours; the exhaust gas system operated smoothly. At the same time, the pass rate of anode plates was improved, slag production was reduced, operational efficiency and production capacity were increased, and maintenance costs were lowered. The study solves the core points of the tilting furnace through synergistic optimization of process, equipment and thermal engineering, reduces energy consumption costs, and provides empirical reference for low-carbon transformation of similar equipment in the industry.