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| EffectSofScomminutionScharacteristicsSofSaSgoldSoreSonSpowerSconsumptionSofSSAGSandSballSmillingS |
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Received:May 10, 2016
Revised:May 18, 2016
Accepted:May 18, 2016
Published Online:February 10, 2017
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| DOI： |
| KeyWord:SMC test;grinding technology;Comminution parameters;SAG;Bond work index of ball mill |
| Author | Institution |
| Zhou Dongqin |
State Key Laboratory of Mineral Processing,Beijing General Research Institute of Mining and Metallurgy |
| Dai Shujuan |
School of Mining Engineering,University of Science and Technology Liaoning |
| He Zhen |
State Key Laboratory of Mineral Processing,Beijing General Research Institute of Mining and Metallurgy |
| Liu Jianyuan |
State Key Laboratory of Mineral Processing,Beijing General Research Institute of Mining and Metallurgy |
| Sun Wei |
State Key Laboratory of Mineral Processing,Beijing General Research Institute of Mining and Metallurgy |
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| Abstract: |
| Drop weight test, as a relatively simple ore grindability measurement method, can be used to demonstrate ore grindability variation in an orebody by systematically characterising the core samples from varied patterns. This will assist in process development and production planning in mining and mineral processing. Drop weight and grindability tests were conducted on the blast rocks and drill core samples from the deep fresh ore pit in a gold mine in Yunnan, in an attempt to quantify the impact of the ore properties on comminution. The blast samples appeared medium hard, compared to hard from the geological block model developed on drill core characterisation. The comminution parameters of A, b, ta in the SMC tests and BWi were shown to be similar for the blast samples and drill core samples, while the DWi was lower for the blast samples. This means that the mining throughput is higher than expected at a set opening gap for the in pit crusher. |
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