XVII Международный Российско-Китайский Симпозиум
НОВЫЕ МАТЕРИАЛЫ И ТЕХНОЛОГИИ
18 – 22 августа 2025 г.
Екатеринбург
Advances in Low-Carbon Energy-Efficient Bath Smelting Technology for Complex Copper Resources
Shiliang Yang
Kunming University of Science and Technology,
Room 614, Fundamental Building, Lianhua Campus, Kunming University of Science and Technology
Currently, copper smelting feedstock exhibits characteristics of being low-grade, fine-sized, and highly complex. Bath smelting remains the mainstream process for treating such complicated feed materials, with sulfur oxidation in ores serving as the primary heat source. However, the industry faces several challenges, including progressively decreasing sulfur content in complex ores, insufficient oxygen-sulfur mixing leading to lower autogenous heat rates, substantial bath temperature fluctuations, high fuel consumption, and significant variability in waste heat quality, causing lower recovery rates.
Supported by national and provincial-level research projects, the research team has conducted over 15 years of extensive industry-academia collaborative research. They established a fundamental theory of dynamic, ultra-uniform nonlinear intensification for energy-saving and carbon reduction. Additionally, they proposed technological concepts such as multi-source synergistic intensified smelting using sulfur instead of carbon and the graded matching utilization of multi-source waste heat. Advanced technologies were developed, including precision ingredient proportioning coupled with intensified oxygen-sulfur mixing for low-carbon smelting, and nonlinear intensified techniques for graded matching utilization of multi-source waste heat in processing complex copper resources via bath smelting.
These research achievements have been successfully applied in numerous domestic and international smelting enterprises, delivering significant economic benefits.
Kunming University of Science and Technology,
Room 614, Fundamental Building, Lianhua Campus, Kunming University of Science and Technology
Currently, copper smelting feedstock exhibits characteristics of being low-grade, fine-sized, and highly complex. Bath smelting remains the mainstream process for treating such complicated feed materials, with sulfur oxidation in ores serving as the primary heat source. However, the industry faces several challenges, including progressively decreasing sulfur content in complex ores, insufficient oxygen-sulfur mixing leading to lower autogenous heat rates, substantial bath temperature fluctuations, high fuel consumption, and significant variability in waste heat quality, causing lower recovery rates.
Supported by national and provincial-level research projects, the research team has conducted over 15 years of extensive industry-academia collaborative research. They established a fundamental theory of dynamic, ultra-uniform nonlinear intensification for energy-saving and carbon reduction. Additionally, they proposed technological concepts such as multi-source synergistic intensified smelting using sulfur instead of carbon and the graded matching utilization of multi-source waste heat. Advanced technologies were developed, including precision ingredient proportioning coupled with intensified oxygen-sulfur mixing for low-carbon smelting, and nonlinear intensified techniques for graded matching utilization of multi-source waste heat in processing complex copper resources via bath smelting.
These research achievements have been successfully applied in numerous domestic and international smelting enterprises, delivering significant economic benefits.
