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Flotation efficiency of different iron ore size classes

  • Physical and Chemical Principles of Beneficiation
  • Published:
Soviet Mining Aims and scope

Conclusions

  1. 1.

    The flotation efficiencies of the individual size classes of iron ores are determined by the technological procedures employed. Under all the investigated conditions and for ores from different deposits maximum efficiency is observed for the −50+20 μ classes.

  2. 2.

    The use of petroleum products under direct flotation conditions greatly increases the beneficiation efficiency of the size classes above 50 μ and has very little effect on slime separation.

  3. 3.

    Reverse flotation provides a higher beneficiation efficiency of slimes.

  4. 4.

    Correlation analysis has established that the over-all beneficiation efficiency of ores under reverse flotation conditions may be considered as the weighted-mean sum of the beneficiation efficiencies of the individual size classes. Under direct flotation conditions, this law does not include the −20+0 μ size class (slimes), the effect of which on the over-all efficiency is twice as great as the other class.

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Literature Cited

  1. L. P. Skorodumova, Behavior of Oxidized Iron Ore Fines during Flotation. Information No. 2, series 3 [in Russian], Chermetinformatsiya, Moscow (1966).

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  2. L. I. Stremovskii, “On the mechanism of the effect of fines on flotation,” in: The Role of Gases and Reagents in Flotation [in Russian], Izd. AN SSSR, Moscow (1950).

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  3. I. P. Uvarov, M. A. Ponomarev, and E. P. Krylova, “New iron-ore flotation reagents based on products of woodresin pyrolysis”, in: Present State and Problems of Selective Flotation of Ores [in Russian], Nauka, Moscow (1967).

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  4. Robert W. Berkhahn, “How flotation makes high-grade specular concentrate at Humboldt,” Mining World,23, No. 112 (1961).

  5. “Specular Hematite Process, Beneficiation,” Mining J.,23, No. 6726 (1964).

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Authors
  1. P. I. Pankratov
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  2. L. P. Skorodumova
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Additional information

MEKhANOBRChERMET, Krivoi Rog. Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 2, pp. 95–98, March–April, 1970.

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Pankratov, P.I., Skorodumova, L.P. Flotation efficiency of different iron ore size classes. Soviet Mining Science 6, 210–213 (1970). https://doi.org/10.1007/BF02502162

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  • DOI: https://doi.org/10.1007/BF02502162

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