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  • IOM3
    Oxidation of chalcopyrite in simulated suspension smelting

    By R. O. Suominen, P. A. Taskinen, K. R. Lilius, A. T. Jokilaakso

    Chalcopyrite concentrate was flash-oxidised in a laminar-flow furnace in oxygen-nitrogen atmospheres that ranged in composition from N2 to N2 + 50 vol% O2. Gas pre-heating temperatures were 500-1100 d

    Jul 1, 1991

  • IOM3
    High-temperature mine climate simulation model for predicting the effect of mine fire

    By P. Mousset-Jones, G. Danko

    Variations of the temperature and steam/moisture content of the air with distance and time are modelled for a single airway. The input for the simulation is an air temperature that varies with time, t

    May 1, 1991

  • IOM3
    Avoiding the zero-flow solution in mass-balance equations

    By S. L. Gay

    The conventional mass-balance equations used as constraints can lead to flow estimate values of zero even though the flow estimates should be some positive number. This is because many of the constrai

    Jun 21, 1905

  • IOM3
    Development of a roof-logging system by rockbolt drilling

    By Y. Ichihara, H. Matsumoto, K. Itakura, H. Eguchi, G. Deguchi, K. Sato

    Mechanical data from a rockbolt drilling machine, such as torque, thrust, revolution and stroke, are useful for understanding the geological and geomechanical conditions around roadways and hence sele

    Jun 19, 1905

  • IOM3
    Antimony-gold deposits of North-Atlantic Acadian-Hercynian domain

    By M. L. Leblanc, J. F. Burzynski, D. J. Mossman

    A strong heterogeneity in the distribution of Sb+/-Au deposits exists within the North Atlantic Acadian-Hercynian domain. This is reflected in the regional disparity in Sb production among the various

    Dec 1, 1991

  • IOM3
    Role of surface effects in improved dewatering of alumina trihydrate

    By L Besra, A. R. Prasad, B. P. Singh

    The role of surface-chemical phenomena and the physical processes that participate in the dewatering of a suspension of alumina trihydrate were subjected to a systematic investigation, which has incre

    Jun 21, 1905

  • IOM3
    Novel gas hold-up probe and application in flotation

    By F. J. Tavera, J. A. Finch

    A probe suitable for on-line measurements of gas hold-up in industrial flotation systems has been developed. It is based on an open cell for measurement of slurry-gas conductivity and a novel syphon c

    Jun 18, 1905

  • IOM3
    Geological setting of iron deposits of Hekimhan Province, Malatya, central Anatolia, Turkey

    By J. Konnerup-Madsen, T. Unlu, H. Stendal

    Paper presented at the conference Economic geology in Europe and beyond II, models for mineral deposits in sedimentary basins, held in Keyworth, UK, 13-14 April 1994. The region includes the Deveci si

    Apr 1, 1995

  • IOM3
    Geology and stable isotope study of Arthrath mafic intrusion and Ni-Cu mineralization, northeast Scotland

    By R. L. F. Kay, T. A. Fletcher, A. J. Boyce, C. M. Rice

    Paper presented at Mineralisation in the Caledonides, the Mike Gallagher memorial meeting held in Edinburgh, 27-28 June 1996. The synorogenic, mafic Ordovician intrusion comprises orthopyroxene-rich x

    Jun 19, 1905

  • IOM3
    Effect of guar gum on selective separation of sphalerite from galena by flotation

    By R. K. Rath

    Adsorption, electrokinetic and flotation studies were carried out. The maximum density of adsorption of guar gum was obtained at pH 7.5 on sphalerite and at pH 11.5 on galena. Flotation recovery of sp

    Jun 21, 1905

  • IOM3
    Influence of source of sample data on geostatistical estimation of reserves of a copper mine

    By R. R. Tatiya

    Data obtained from a copper mine were used in a comparative study of the reserve estimates generated by applying geostatistical methods to surface borehole data, underground core drilling results and

    Jun 19, 1905

  • IOM3
    Alluvial gold dredging: a case study of effects on groundwater turbidity

    By H. R. Thorpe

    A floating gold dredge operating in coarse alluvial gravels of the Grey River on the west coast of the South Island, New Zealand, generated high concentrations of clay and colloidal particles in the d

    Jun 19, 1905

  • IOM3
    Automated gold search and applications in process mineralogy

    By L. J. Cabri, J. M. D. Wilson, R Lastra

    An image analysis program can search for gold minerals in polished sections by scanning about 100 x 100 back-scattered electron images at a magnification of x400, allowing gold grains as small as 1 mi

    Jun 21, 1905

  • IOM3
    New generalised model of observed ore value distributions

    By H. S. Sichel, W. J. Kleingeld, C. E. Dohm

    A model of ore value distributions is presented that is the culmination of a statistical approach rather than simply a model that has been successfully applied to the evaluation of ore reserves. Detai

    Aug 1, 1995

  • IOM3
    Evaluation of static test used to predict the potential for acid drainage generation at sulphide mine sites

    By B. Gazea, A. Kontopoulos, A. Kourtis, K. Adam

    Static tests give a measure of the balance between acid-producing and acid-neutralising mineral components in a material, while kinetic tests determine acid generation and neutralisation over a long p

    Jun 19, 1905

  • IOM3
    Knowledge-based system for condition monitoring of cone crushers

    By I. D. Nock, R. M. Parkin

    Paper presented at a meeting on: Artificial intelligence in the minerals sector, held in Nottingham, UK, 20 April 1993 (original title: Knowledge-based condition monitoring of cone crushers). A large

    Apr 1, 1994

  • IOM3
    Long-team open-pit production scheduling through dynamic phase-bench sequencing

    By Qing Wang

    In this method the state of an open-pit mine is represented by the number of benches that are mined in each predesigned mining phase (or pushback). Consequently, a specific mining schedule can be repr

    Jul 1, 1996

  • IOM3
    Extraction of rare earths and thorium from monazite by chlorination with carbon tetrachloride

    By G. Adachi, K. Machida, T. Ozaki, K. Murase

    The chlorination rate with CCl4 was unexpectedly slower than carbochlorination using chlorine under the same reaction conditions. Chlorination with CCl4 was topochemical and the amount of monazite rea

    Jun 18, 1905

  • IOM3
    Remote sensing, geobotany and biogeochemistry in detection of Thalanga zinc-lead-copper deposit near Charters Towers, Queensland, Australia

    By M. M. Cole

    An assessment of the combined application of remotely sensed satellite imagery, geobotany and biogeochemistry reveals the complementary value of these techniques in the Thalanga area. The SPOT imagery

    Jan 1, 1991

  • IOM3
    Bioleaching of iron-stained sands

    By A. F. Neil, A. S. Bahaj, P. Watkins, P. M. Hyslop, C. E. Kirby, P. A. B. James

    The results of initial work indicate that for 3 of the 5 quarry sands bioleaching reduces the iron oxide content to a commercially acceptable 0.035 wt% Fe20 3, although the time taken to achieve this

    Jun 18, 1905