The mining industry needs a low-cost and reliable breakage characterization test which can rapidly process a large number of samples for geometallurgical modelling. The more samples are tested, the better is the understanding of the ore hardness variability and lower the design or production risks. The proposed solution is a new testing device, herein named Geopyörä, which is a variation of a roll crusher with an adjustable gap and instrumentation to measure breakage forces and energy applied to rock particles during the breakage process. The principle utilises a controlled degree of crushing, with absorbed breakage energy being a response rather than an input. The new testing device is capable of rapidly testing rocks over a wide range of sizes and accurately measured energy levels. For a range of ores, the results were demonstrated to provide outputs that replicate the breakage modelling from full JK drop Weight tests. In addition to being suited to testing drill cores and small sample masses, the Geopyörä provides a distribution of particle strengths within every sample. This paper provides an introduction to the concept, development of the prototype device and breakage calibration results that indicate its potential to become a major player in geometallurgical ore testing.

采矿业需要一种低成本且可靠的断裂特性测试，该测试可以快速处理大量样品以进行地质冶金建模。测试的样品越多，对矿石硬度变异性的了解就越好，并降低了设计或生产风险。提出的解决方案是一种新的测试设备，在这里称为Geopyörä，它是辊式破碎机的一种变型，具有可调节的间隙和仪器，用于测量破碎过程中破碎力和施加在岩石颗粒上的能量。该原理利用了可控的破碎程度，吸收的破碎能量是响应而不是输入。新的测试设备能够快速测试各种尺寸的岩石并精确测量能级。对于一定范围的矿石，结果证明，该结果可提供可重复完整JK落锤重量测试的破损模型的输出。除了适用于测试钻芯和少量样品，Geopyörä还提供了每个样品中颗粒强度的分布。本文介绍了概念设备的概念，原型设备的开发以及破损校准结果，这些结果表明该设备有可能成为地质冶金矿石测试中的主要参与者。