Caron Plant

PAL dominates for recent projects. No recent Caron plants have been built. 

THE STARVED ACID LEACHING TECHNOLOGY (SALT) FOR RECOVERY OF NICKEL AND COBALT FROM SAPROLITES AND CARON PLANT RESIDUES... 

Search Minerals Inc., 1320 - 885 West Georgia Street, Vancouver, Canada V6C 3E8 Keywords Nickel, Cobalt, Atmospheric Leaching, Acid, Saprolite, Caron Plant, SALT... 

Caron plant tailings represent a potential souree of value. At a grade of 0.4-0.5% Ni and -0.1% Co, there is significant in-situ value in previously mined, ground, surface tailings deposits at Caron facilities. 

The results of the initial bench testing of the SALT leaching process applied to Caron Plant tailings and below cut-off grade saprolites are described in this paper. The results of the pilot plant testing will be reported elsewhere when complete. 

A sample of Caron plant tailings was obtained. The analysis is shown below. The sample was used as received without milling. 

Table I. Caron Plant Tailings Sample Analysis...

Caron Plant Tailing Leach Results. An example of the type of data obtained from leaching of Caron plant tailings is summarized in Table 2 below. The nickel and cobalt leaching results of the 8 acid leach experiments are summarized in Table 3 below. 

Table III. Starved Acid Leach Experiments Treating Caron Plant Tailings. 

A series of 9 saprolite samples were obtained and tested. Table IV shows the composition of the major elements. The nickel content ranged from 0.97 to 2.05%. The magnesium content ranges from 12 to 21%, consistent with saprolite mineralogy. The iron levels are relatively low compared to the Caron plant tailings. 

The saprolite samples were leached in the same way as the Caron plant tailings above. A volume of 1 L of solution containing sulfuric acid and 250 g of dry saprolite sample were mixed in an aerated reactor for 8 hours at 85 °C. Samples were taken periodically and analyzed for dissolved metals. The acid addition values ranged from 150-450 kg H2S04/1. The initial particle size was approximately 50 pm (P80). 

A total of eight leaching experiments were carried out on a Caron plant tailings sample containing 0.51% Ni and 0.054% Co. The extraction of nickel and cobalt were affected by acid addition and temperature (with oxidation). The most attractive economics were obtained with low acid addition (as per the starved acid leach technology concept). 

Dreisinger, D., Clucas, J., 2012. The Starved Acid Leach Technology (SALT) for Processing of Nickel Laterites and Caron Plant Tailings , Proc. of WALSIM II, Eds. C.Q. Jia, M. Sudbury, J. Zinck, V. Ramachandran, E.A. Morris, CM METSOC, Montreal, 39-51. 

The Starved Acid Leaching Technology (SALT) for Recovery of Nickel and Cobalt from Saprolites and Caron Plant Residues.413... 

St-Arnaud M., Hamel C., Vimard B., Caron M., Fortin J.A. Inhibition of Fusarium oxysporum f. sp. dianthi in the non-VAM species Dianthus caryophyllus by co-culture with Tagetes patula companion plants colonized by Glomus intraradices. Can J Bot 1997 75 998-1005. 

The insect baculovirus-cell system has been widely used, mainly for the production of recombinant proteins (Maiorella et al., 1988 Jarvis, 1997). This system has several advantages, including the ability to produce functional recombinant proteins that are immunogenically active, the ability to make post-translation modifications, and the fact that it contains a powerful promoter (polyhedrin), as well as the fact that the virus is not pathogenic to plants and vertebrates (Caron et al., 1990 Nguyen et al., 1993 Godwin et al., 1996). 

Fig. 7. Hypothetical structures of a) iPCP from Amphidinium (Hiller et al., 1995) and b) FCP from Laminaria (Caron et al., 1995) based on the three transmembrane model of higher plant LHCIl (Kuhlbrandt et al., 1994). Squares or dashed lines show the attachment points of conserved Chi a molecules and circles identical residues to those in LHCIl.

Cagno E., Caron F., Mancini M. 2002 Risk Analysis in the Plant Commissioning The Multilevel Hazop. Reliability Engineering System Safety 77(3) pp. 309-323 Elsevier Science The Netherlands. 

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