Ball mill impact collision simulation test bed and ball mill impact collision simulation method

Abstract

The invention discloses a ball mill impact collision simulation test bed and a ball mill impact collision simulation method. The ball mill impact collision simulation test bed comprises a light gas gun, a steel ball, a high-speed camera, a dynamic strain gauge, a photoelectric speed measuring device and a data collection device, wherein the steel ball is launched by the light gas gun, the movement speed of the steel ball is measured through the photoelectric speed measuring device, the steel ball impacts a cylindrical rock test sample through a test box, the cylindrical rock test sample strikes a lining plate test sample under the impact load effect, the rock test sample and the lining plate test sample are horizontally arranged in an arc groove of a test box stander, the center of the arc groove is leveled to the center of the steel ball, the accuracy of the impact process is guaranteed, the impact collision process is precisely captured through the high-speed camera, an impact acceleration sensor, a strain plate and the like are arranged on the surface layer of a cushion test sample, an output signal is collected through the dynamic strain gauge and a data collection card, the signal is processed through a computer data processing system, so that the dynamic mechanics performance of a material in the ball mill impact collision process can be accurately achieved.

Description

technical field [0001] The invention relates to a ball mill impact and collision simulation test bench and method, and is especially suitable for the simulation test of impact and collision between ball mill steel balls, rocks and lining plates. Background technique [0002] With the continuous increase of the diameter of the ball mill drum, the maximum diameter has reached 7.9m. Due to the complex internal movement process and impact collision process, it is impossible to effectively test and simulate the grinding process of the ball mill. Most of them use molding equipment for testing. If a scaled-down ball mill is built, not only the test cost is high, but also the dynamic mechanical properties of the rock and the liner during the impact and collision process cannot be accurately obtained. [0003] At present, there are many kinds of impact and crash test rigs at home and abroad, the most common of which is the Hopkinson impact test rig, which is mainly used to simulate t...

AI Technical Summary

Problems solved by technology

Since the Hopkinson rod in the Hopkinson test bench satisfies a certain length-to-diameter ratio, the stress wave only propagates in one-dimensional direction during the high-speed impact process, which cannot be applied to the impact simulation test of the steel ball, rock and liner in the ball mill.

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