Results in laboratory test and pilot level with Cu-Pb-Zn polymetallic ores.

EXAMPLES OF APPLICATION.

1. Taken from: C.J. Martin, et. al. [4]. It is shown two flotation test for the same ore.

In Fig. 2 up till the end of pyrite rougher flotation and Fig. 3 till the end of bulk flotation the results are similar, indicating good test reproducibility. After this stage nitrogen promoted flotation of a pyrite concentrate while air produced not significant flotation. The recovery of pyrite to the ensuing zinc concentrate fell by 50% as a result of the prior pyrite flotation in nitrogen.

Fig. 4 presents the zinc rougher grade/recovery profile. It shows that zinc rougher grades are 5-10% higher at recoveries up to 55% after pyrite flotation in nitrogen.

Ore: Kidd Creek Mines. Galena 1%, Sphalerite 14%, Chalcopyrite 12%, Pyrite 45%.

Tests were done in plant taking tails from Pb-Cu flotation circuit. Two kinds of tests were executed with air and nitrogen. Column cells were used during the tests.

Clearly is shown that nitrogen improves iron flotation.

Mining Equipment China Gold and monetary, economic and political factors Geological Sampling. How to collect a representative sample for testing Metallurgy and Assays. Primary Crushing Characteristics and performance of hammermills Bornite Flotation - Test Conclusions Flotation Precipitants Replacement Deposits Optimum Feed Size to Roll Crusher Table - Chart to Sizing a Shovel Dipper Staurolite Composition, Crystallization & Structure Bridging a Crusher Crystallography, Optical Properties and Cleavage Crushing Plant Noise High pressure oxidation of refractory gold minerals