Gold recovery

The developed assay was successfully applied for the arsenite and arsenate determination in contaminated waters of the gold recovery plant and in snow covers of the industrial anthropogenic sources vicinities as well. The data produced are in a good agreement with the results of independent methods atomic absorptioin and atomic emission spectrometry and capillary electrophoresis. [Pg.428]

Gold recovery Operation of carbon in leach, carbon in pulp, and heap leach circuits Recovery of gold from tailings dissolved in sodium cyanide... [Pg.416]

Activated Carbon for Process Water Treatment Activated Carbon from CPL Carbon Link - Activated carbon from CPL Carbon Link for liquid and gas phase purification by adsorption. Activated carbons for all applications including chemical, water, air, solvent recovery, gold recovery, food, automotive, industrial, catalysis.. http //www.activated-carbon.com. [Pg.442]

HCN is now also used to make (C1CN)3 for pesticides (9%), NaCN for gold recovery (13%), and chelating agents such as edta (4%), etc. [Pg.321]

Tremblay, L. Deschenes, G. Ghali, E. McMullen, J. Lanouette, M. Gold recovery from a sulfide bearing gold ore by percolation leaching with thiourea. Int. J. Miner. Process. 1996, 48, 225-244. [Pg.799]

Tellurides, on the other hand, are readily floatable in the presence of small quantities of collector, and it is believed that tellurides are naturally hydrophobic. Tellurides from Minnesota (USA) were floated using dithiophosphate collectors, with over 9% gold recovery. [Pg.4]

Gold recovery obtained using different flowsheets [5]... [Pg.7]

Gold in the porphyry copper ore may appear as native gold, electmm, cuproaurid and sulphosalts associated with silver. During the flotation of porphyry copper-gold ores, emphasis is usually placed on the production of a marketable copper-gold concentrate and optimization of gold recovery is usually constrained by the marketability of its concentrate. [Pg.9]

The minerals that influence gold recovery in these ores are iron sulphides (i.e. pyrite, marcasite, etc.), in which gold is usually associated as minute inclusions. Thus, the iron sulphide content of the ore determines gold recovery in the final concentrate. Figure 17.3 shows the relationship between pyrite content of the ore and gold recovery in the copper concentrate for two different ore types. Most of the gold losses occur in the pyrite. [Pg.9]

Figure 17.3 Effect of pyrite content of the ore on gold recovery in the copper-gold concentrate at 30% Cu concentrate grade (1 ore from Peru 2 ore from Indonesia).

In the presence of soluble cations (e.g. Fe, Cu), additions of small quantities of organic acid (e.g. oxalic, tartaric) improve gold recovery in the copper concentrate. [Pg.10]

Effect of collector PM230 on copper/gold recovery from Igarape Bahia oxide copper/gold ore [8]... [Pg.11]

In the case of a copper-zinc and copper-lead-zinc ore, gold collects in the copper concentrate. During the treatment of lead-zinc ores, the gold tends to report to the lead concentrate. Information regarding gold recovery from base metal ores is sparse. [Pg.14]

The most recent studies [9] conducted on various base metal ores revealed some important features of flotation behaviour of gold from these ores. It has been demonstrated that gold recovery to the base metal concentrate can be substantially improved with the proper selection of reagent schemes. Some of these studies are discussed below. [Pg.14]

Gold recovery from copper-zinc ores is usually higher than that obtained from either a lead-zinc or copper lead-zinc ore. This is attributed to two main factors when selecting a reagent... [Pg.14]

Figure 17.6 Effect of ZnS04 additions on gold recovery from lead-zinc ores.

Effect of different depressant combinations on gold recovery to the copper concentrate from lower... [Pg.15]

The type of collector and flowsheet configuration play an important role in gold recovery from these ores. With a flowsheet that uses bulk Cu-Pb flotation followed by Cu-Pb separation, the gold recovery is higher than that achieved with a sequential Cu-Pb flotation flowsheet. In laboratory tests, and Aerophine collector type, in combination with xanthate, had a positive effect on gold recovery as compared to either dithiophosphate or thionocarbamate collectors. Table 17.10 compares the metallurgical results obtained with an Aerophine collector to those obtained with a dithiophosphate collector. [Pg.16]

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