FRACTAL SURFACE OF ROCK OR ORE PARTICLES AND RELATED COMMINUTION ENERGY

Acta Metall Sin

1993, Vol. 29

Issue (2): 54-59 DOI:

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FRACTAL SURFACE OF ROCK OR ORE PARTICLES AND RELATED COMMINUTION ENERGY

LI Gongbo;XU Xiaohe Northeast University of Technology; Shenyang

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LI Gongbo;XU Xiaohe Northeast University of Technology; Shenyang. FRACTAL SURFACE OF ROCK OR ORE PARTICLES AND RELATED COMMINUTION ENERGY. Acta Metall Sin, 1993, 29(2): 54-59.

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Abstract Semi-automatic image analysis system is used for fractal dimensionmeasurement of the outline of a rock or ore particle in comminution. The experimental datashow that the fractal dimension of particle surface is in the range of 2.033--2.110, which isslightly higher with finer in particle size. Therefore, according to the theory that energy incomminution is proportional to the fractal surface area of particle, the formula which is sameas Hukki's empirical equation is obtained and is stated as general form of three expressionsbased on the Kick's, Rittinger's and Bond's theory.

Key words: rock or ore particle energy in comminution fractal

Received: 18 February 1993

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