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ArticleName Ore hardness properties evaluation based on industrial comminution circuits surveys
DOI 10.17580/em.2022.02.13
ArticleAuthor Lvov V. V., Chitalov L. S., Lagov P. B.

Saint-Petersburg Mining University, Saint-Petersburg, Russia:

Lvov V. V., Associate Professor, Candidate of Engineering Sciences,


JSC Cadfem CIS, Moscow, Russia:

Chitalov L. S., Candidate of Engineering Sciences


Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences (IPCE RAS), Moscow, Russia:

Lagov P. B., Doctor of Engineering Sciences


The paper addresses determination of ore hardness and grindability parameters using the data obtained from the industrial comminutions circuits survey campaigns. The calculations use the earlier obtained relations between the high-energy impact fracture parameters A and b from JK DWT and SMC tests and the energy efficiency indices used in the Morrell method for the conventional grinding, coarse grinding and high pressure grinding roll milling. Using the simulation modeling of comminution circuits for two types of sulfide copper–nickel ore and one type of apatite–nepheline ore, it is shown that the relative error of the theoretical determination of the JK DWT and SMC testing data is never higher than 16.1%. The calculation method is recommended for application in design and optimization studies of process plants for various genesis minerals, including iron ore.

The study was supported by the state contract for research activity in 2021, Grant No. FSRW-2020-0014.

keywords Energy indices, ore strength properties, drop weight test, JK DWT, SMC test, comminution, crushing, grinding, Morrell

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