Contact test and analysis system and test method suitable for rotary mill cylinder

Abstract

The invention relates to a contact test analysis system suitable for a rotary mill cylinder. The system comprises a mill cylinder at the external of a mill, and a rolling monitoring device in rollingcontact with the mill cylinder; motion signals of the mill cylinder are connected with a mill data processing device, a single-chip, a power spectrum analyzer and a characteristic identifier of an online monitoring and analyzing system through the rolling monitoring device in sequence; an output end of the characteristic identifier is connected with a mill parameter adjuster and a recording / displaying device; and the mill parameter adjuster is connected with the single-chip. The system can be adapted to a working state monitoring principle in a ball mill in a rotary working state, and predictsthe working state of the ball mill to overcome the problems in traditional ball mill state monitoring.

Description

technical field [0001] The invention belongs to the test and analysis instrument of the working state of the mill and the grinding load, which is a kind of vibration signal directly measured from the mill cylinder in the rotating state to judge the grinding concentration, material-ball ratio and filling rate inside the mill. The instrument for testing and analyzing the state of the size and wear degree of the liner, specifically, relates to a contact testing and analyzing system suitable for the barrel of a rotary mill, and discloses the testing method at the same time. Background technique [0002] Grinding is the process of reducing the ore particle size continuously by means of the impact and grinding action of the medium (steel ball, steel rod, gravel) in the rotating cylinder of the ball mill and the ore itself, until the useful minerals and gangue minerals are fully dissociated. process. The product quality of the grinding process is highly related to the state parame...

AI Technical Summary

Problems solved by technology

However, if the variation range of the pulp concentration is not obvious, the resistance torque of the rotating measuring head will not change obviously; if it contacts with the ball material, the resistance of the measuring head will increase suddenly; the blade type measuring head is also easy to wear; (ZL201410308498.8) same issue

[0008] From the perspective of the patented technology disclosed above, there are three methods for selecting the measuring point. One is to choose to measure the vibration signal or gravity signal from the bearing seat far away from the cylinder; Actual working conditions

The second is to install the sensor monitoring device on the cylinder, and the sensor monitoring device periodically obtains the effective signal inside the cylinder with the rotation of the cylinder; if the grinding condition deviates from the normal state, it is difficult to accurately judge the work of the mill State (such as the detachment point of the ball material, the drop point, the wear amount of the liner, etc.)

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