A wear-resistant composite liner for a large semi-autogenous mill and its manufacturing method

Abstract

The invention belongs to the technical field of semi-autogenous mill equipment, and in particular relates to a large-scale semi-autogenous mill wear-resistant composite liner and a manufacturing method thereof. The wear-resistant composite liner of the present invention includes a high-strength and tough wear-resistant working part, a high-strength wear-resistant matrix part and a buffer and security part. First, the high-strength and tough wear-resistant working part, the high-strength wear-resistant The tough and wear-resistant working part and the high-strength wear-resistant base part are subjected to surface treatment, and then one side of the prepared high-strength wear-resistant 1. The high-strength wear-resistant base part and the buffer security part are connected into one body through high-strength bolts. The wear-resistant composite liner of the present invention has a novel structure, has excellent comprehensive properties such as no deformation, no fracture, and high wear resistance, greatly improves the service life and safety of the liner of the large semi-autogenous mill, and reduces the cost of the large semi-autogenous mill. The operating cost is high, and the production efficiency of large semi-autogenous mills is also improved.

Description

technical field [0001] The invention belongs to the technical field of semi-autogenous mill equipment, and in particular relates to a large-scale semi-autogenous mill wear-resistant composite liner and a manufacturing method thereof. Background technique [0002] The semi-autogenous mill is a device that uses steel balls partly and partly uses the ore itself as the grinding medium for grinding. From the perspective of effective energy utilization, although semi-autogenous mills consume more energy in grinding, semi-autogenous mills replace medium and fine crushing operations, screening operations, and ore transfer links, shortening the process and reducing dust generation. It saves money, reduces operating costs, and reduces the impact on the environment. [0003] The semi-autogenous mill is composed of main bearing, cylinder part, transmission part, cylindrical screen, main motor, slow driving device, jacking device, lubrication, electric control and other parts. The line...

AI Technical Summary

Problems solved by technology

[0004] Large-scale semi-autogenous mill equipment is a development trend, but at the same time, the working conditions of the machine are more severe, which greatly affects the life of the cylinder liner. Obtaining a liner with a longer life can effectively reduce the grinding cost while improving work efficiency

In the prior art, the liners of semi-autogenous mills mostly use a single plane structure, which has a short service life. After a short period of service, problems such as cracks and breakage are prone to occur, and it is not easy to disassemble and the disassembly cost is high.

[0005] Chinese patent application CN110468333A discloses a high wear-resistant ultra-high manganese steel liner for semi-autogenous mills. The structure of the wear-resistant steel liner is relatively simple, and the chemical composition of the alloyed ultra-high manganese steel used is complex. The final liner is It has not achieved better results in terms of yield strength, tensile strength, hardness and impact toughness.

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