Mill cylinder with composite damping structure

Abstract

The invention discloses a mill cylinder with a composite damping structure, which comprises an outer cylinder and a plurality of lining plates mounted in the outer cylinder, and at least one layer of damping plate is mounted between the outer cylinder and the lining plates. The damping plates are installed between the outer cylinder and the lining plates and between the lining plates, after the high-hardness lining plates are subjected to high-frequency and heavy-load high impact of ores and steel balls, residual energy is converted into heat energy to be dissipated, the high-hardness lining plates rapidly recover to the state before impact, and the problems of crack initiation and deformation of the lining plates caused by energy superposition after continuous impact are solved; and high impact frequency and cylinder rotation frequency are not easy to form resonance. And the high-hardness lining plate is not easy to crack after being subjected to high impact, is not easy to cut, scratch and wear when being subjected to ore lifting, and also has the effects of reducing frequency and reducing noise. The vertical impact resistance is correspondingly improved as long as the hardness of the high-hardness lining plate is improved in the service process, the service life is correspondingly prolonged, and the shutdown maintenance frequency of the mill is reduced.

Description

technical field [0001] The invention belongs to the field of mills, and relates to a mill cylinder, in particular to a mill cylinder capable of preventing resonance of the cylinder and improving the service life of lining plates. Background technique [0002] At present, the diameter of the mill is 2 to 14m, and the types include ball mill, autogenous mill, and semi-autogenous mill. The diameter and length of each mill cylinder are different, and each mill model has dozens of different sizes and shapes. Lining boards, including barrel lining boards, corner lining boards, feeding end lining boards, pulp lifters, middle discharge boards, discharge grid boards, etc. The material of the liner is roughly divided into hard materials and plastic materials. The hard materials include alloy steel and cast iron, and the plastic materials include high manganese steel and plastic materials. One of the functions of the liner is to protect the barrel of the mill. The life of the liner re...

AI Technical Summary

Problems solved by technology

The plastic liner is not resistant to cutting and impact, and the hard liner is resistant to cutting and impact. The current problem of short life of the liner cannot be solved from the liner material.

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