The application of grid type ball mill liners and overflow type ball mill liners in hard ore medium of Sizhou Mineral Processing Plant of Jiangxi Copper Corporation

Jiangxi Copper Corporation's predecessor, Dexing Copper Plant, was first established in 1958 and formally established corporation in 1979. Today, Jiangxi Copper Corporation has become one of the world's top 500 enterprises and one of the largest copper industry enterprises in China, with more than 40,000 employees worldwide and assets of the group exceeding 30 billion US dollars.

Jiangxi Copper Corporation has formed four business sectors, including "copper smelting, land development, international trade and environmental protection industry". As one of the leading enterprises in China's copper smelting industry, Jiangxi Copper Group Corporation not only has first-class technology and equipment in China, but also has high R&D and innovation capabilities. The Group's production line can meet the production needs of 33 kinds of copper alloys in the world.

Formed an annual production capacity of 1.7 million tons of high-quality high-grade copper products. At the same time, the group has always adhered to the principle of "green environmental protection, low carbon and high efficiency", and has a large number of environmental protection businesses, such as sludge treatment, wastewater treatment, noise control, etc., to improve resource utilization, through the comprehensive utilization of copper waste, tailings, etc., to achieve sustainable development and contribute to the cause of environmental protection.

The subordinate Sizhou Mineral Processing Plant was completed and put into operation in 1965, and it was also the first to promote the construction of non-leakage factories, which led to the construction of non-leakage factories, chemical plants with safety and environmental protection standards and chemical plants with site management standards, and comprehensively improved the site management level of the whole mine. In order to improve the recovery rate of copper separation, Sizhou Mineral Processing Plant realizes "more crushing and less grinding" in the ore crushing under the existing conditions, standardizing the water amount of grinding operation, optimizing the structural parameters of the cyclone, improving the chemical system, and effectively realizing the double improvement of the grade and recovery rate of copper crude concentrate with the same system processing capacity, especially his Ф3.2×3.1M ball mill.

With a diameter of Ф3.2×4.5M ball mill, with a diameter of Ф3.6×6.0M lattice ball mill, with a diameter of Ф3.6×6.0M and a diameter of Ф5.0×6.4M overflow ball mill grinding liners in hard mineral medium selection application, in copper ore platinol hardness: 6±2, ore density: 3.05-3.42T/㎡, cycle load: 300%, grinding concentration: 78±2%, feed size: P80=8mm, product size: +80 mesh < 10%; -200 > 60%, fill rate: 40±2, the critical operation rate of 78% under the working conditions, the use of ZGMn13-1 high manganese steel and ZGMn13Cr2 high manganese steel material, the 1102×409×145 size wear-resistant liner produced by our company, 1256×425×150, 1538×394×145, 1292×460×125 size wear resistant liner, and 904×482×165 size wear resistant liner, according to the "Austenitic high manganese steel castings" GB/T5680-2010 product mechanical properties standard, Hardness HB180 ~ 220, tensile strength is Rm≥685MPa and Rm≥735MPa, elongation ≥25%, impact absorption energy KU2≥118J, the product is expected to reach 12 months of service life, and in actual use, with a diameter of Ф3.2×3.1M ball mill, Ф3.2×4.5M ball mill.

With a diameter of Ф3.6×6.0M lattice ball mill, with a diameter of Ф3.6×6.0M and a diameter of Ф5.0×6.4M overflow ball mill, the stable life of the mill is more than 12 months and the lining plate has been thinned by adding new chemical components, which is still more than 12 months, exceeding the effective use period of 8-10 in the industry generally. The service life of the grinding liner is significantly improved by more than 20%-50%, which greatly saves the time and working hours of equipment downtime for maintenance and loading and unloading, and increases the economic benefits of the enterprise by improving the life of the grinding liner.