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After the crushing step the bauxite has to be ground usually in spent liquor at 60 ... Due to the above special circumstances the determination of the specific grinding energy or the Bond work index for designing new grinding facilities and the optimization of the existing operations (grinding ball charge, filling ratio, revolution number ...
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Bond's work index is very useful in blasting and communition process, but its determination is very lengthy and cumbersome process • Bond's work index is predicted using simple field measurable parameters like density, compressive strength and Protodyakanov's strength index.
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In the next step, the performance of rock fragments in comminution processes was examined by conducting some crushing and grinding experiments. Results showed that the blasting process can reduce the Bond work index of fragments as much as 18% and enhances their crushability by 9.5%.
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The product size distribution generated from crushing in a laboratory jaw crusher are used to calculate two comminution indices Ci, that can be correlated to Axb and to the Bond ball mill work index (compare Section 3.3), respectively.
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The investigations of these issues is particularly important for S&B as this company possesses significant diasporic bauxite resources. The possibilities of processing these hard bauxites in Greece and exporting them are determined by the costs of grinding and chemical liberation. ... The work index (W i) can be determined from the laboratory ...
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A single method was used to obtain reference values of the Bond-work index of bauxites from most of the mines in the world. Temperature, grinding conditions, and other factors have a significant effect on the ... These differences have a significant impact on the crushing and grinding of the bauxite-bearing material, and it often becomes ...
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The Bond work index is regarded as one of the crushing ... In this investigation, some Saudi samples from bauxite, kaolinite, granodiorite, magnetite, granite, feldspar and quartz were tested for hardness, abrasion, compressive strength and modulus of elasticity,, and the work index is estimated.
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