Products

pyrrhotite bearing gold ore

(PDF) Cyanidation of a pyrrhotite-bearing gold ore

Effect of lead nitrate addition on the leaching of a pyrrhotite-bearing gold ore (Cyanidation: pH 11.2, 380ppm NaCN, 8ppm O 2,32h) Figure 5 illustrates the reaction of cyanide with chalcopyrite

More

Cyanidation of a pyrrhotite-bearing gold ore

Cyanidation of a pyrrhotite-bearing gold ore G. Deschênes1*, D. Hall2 and M. Fulton1 1 Mining and Mineral Sciences Laboratories, CANMET, Natural Resources Canada, 555 Booth Street, Ottawa, Ontario, K1A 0G1 Canada 2 Placer Dome Canada, Musselwhite Mine, P.O. Box 7500,Thunder Bay, Ontario, P7B 6S8 Canada Received 30 July 2002; accepted 21

More

(PDF) Pyrrhotite of Gold-Bearing Ores: Composition, Point

of pyrrhotite a nd gold concent rations in pyr rhotite-bearing ores ha ve a slight shif t relative to each other. The va riant of interpretat ion of po sition pyr rhotite-b earing gold bodies in

More

[PDF] Cyanidation of a pyrrhotite-bearing gold ore

The Musselwhite Mine in Canada processes a free milling gold ore at 5.5-5.8g/t Au and 4.2% pyrrhotite. A laboratory investigation was conducted to improve cyanidation. The pyrrhotite was determined to be 50% monoclinic and 50% hexagonal. A leach using 8ppm dissolved oxygen yielded only 82.3% gold extraction with a 0.29kg/t NaCN consumed. The addition of lead nitrate, directly to the leach

More

Pyrrhotite of Gold-Bearing Ores: Composition, Point

of pyrrhotite and gold concentrations in pyrrhotite-bearing ores have a slight shift relative to each other. The variant of interpretation of position pyrrhotite-bearing gold bodies in magnetic fields was offered. Keywords: pyrrhotite, crystal structure, cation

More

Pyrrhotite of Gold-Bearing Ores: Composition, Point

Pyrrhotite of Gold-Bearing Ores: Composition, Point Defects, Magnetic Properties, Gold Distribution. Normal 0 false false false MicrosoftInternetExplorer4 On a basis of comprehensive analysis of the crystal structure, chemical and phase composition pyrrhotites from ores and near-ore rocks, an analytical expression for calculating the

More

Composition of Pyrrhotite as an Indicator of Gold Ore

The pyrrhotite compositions in pyrite-containing parageneses as well as Au/Ag in pyrites, pyrrhotites, and visible native gold in sulfide ores of other gold and gold–silver deposits can be used to assess the possible presence of nanosized solid microinclusions of sulfide and other gold and silver forms.

More

Figure 4 from Cyanidation of a pyrrhotite-bearing gold ore

Figure 4. Effect of lead nitrate addition on the leaching of a pyrrhotite-bearing gold ore (Cyanidation: pH 11.2, 380ppm NaCN, 8ppm O2, 32h) "Cyanidation of a pyrrhotite-bearing gold ore"

More

Pyrrhotite of Gold-Bearing Ores: Composition, Point

The calculation of the concentration of point defects in the crystal structure pyrrhotites from ores of different degrees goldbearing, from host rocks with different chemical composition and estimation the relationship between gold content in pyrrhotite-bearing ore, near-ore slates and chemical composition, stoichiometry of the mineral

More

Gold Pyrite, Pyrrhotite and Arsenopyrite Recovery

One of the more common classes of ores containing gold is when gold is associated with pyrite, pyrrhotite, and arsenopyrite. This is the area of gold recovery that has probably received the most research and plant optimization support especially in light of the long history of South African industrial practice. From a reagent viewpoint, charged water soluble collectors such as xanthates

More

Composition of Pyrrhotite as an Indicator of Gold Ore

The pyrrhotite compositions in pyrite-containing parageneses as well as Au/Ag in pyrites, pyrrhotites, and visible native gold in sulfide ores of other gold and gold–silver deposits can be used to assess the possible presence of nanosized solid microinclusions of sulfide and other gold and silver forms.

More

(PDF) Gold-bearing pyrrhotite ores in East Sayan

Gold-bearing pyrrhotite ores in East Sayan: Composition and Formation Conditions (by the Example of the Ol’ginskoe Ore Occurrence) January

More

Figure 4 from Cyanidation of a pyrrhotite-bearing gold ore

Figure 4. Effect of lead nitrate addition on the leaching of a pyrrhotite-bearing gold ore (Cyanidation: pH 11.2, 380ppm NaCN, 8ppm O2, 32h) "Cyanidation of a pyrrhotite-bearing gold ore"

More

Method of pyrrhotite-bearing ores flotation

Method of pyrrhotite-bearing ores flotation. B03D1/02 Froth-flotation processes. represents mix of solutions of potassium isoamyl xanthate per 20 g/t of ore and potassium butyl xanthate per 80 g/t of ore. EFFECT: higher yield of gold. 1 tbl. Method of coal stock concentration // 2452583.

More

Method of processing refractory gold-bearing pyrrotine

The invention relates to ferrous metallurgy and is intended for the recovery of precious metals gold and silver, as well as finding other non-ferrous metals from refractory pyrrhotite-arsenopyrite ore and man-made gold-bearing minerals, characterized by technological pornosu in relation to cyanide method of dissolution of noble metals, due to a thin uniform impregnation

More

Gold Deposits in Amphibolite and Granulite Facies Terranes

Ore mineral assemblages are pyrrhotite dominated in almost all deposits with, in some cases, minor pyrite and chalcopyrite. In other assemblages, there is an important arsenopyrite component, with loellingite forming commonly in the cores of arsenopyrite grains. Gold introduction at greenschist conditions during the retrograde evolution of

More

cyanidation of a pyrrhotite bearing gold ore

Cyanidation of gold clay ore containing arsenic and manganese . Apr 1, 2010 The extraction process of gold and silver from the gold clay ore containing arsenic and of copper-bearing refractory gold ores by bio-heap leaching, J. Univ. and cyanide dosage on gold extraction from a pyrrhotite-rich ore,get price

More

Pyrrhotite Processing BCC di Valledolmo

Cyanidation of a pyrrhotite-bearing gold ore 911. The European Journal of Mineral Processing and Environmental Protection Vol.3, No.3, 1303-0868, 2003, pp. 353-361 Cyanidation of a pyrrhotite-bearing gold ore . tangible benefits pyrrhotite iron ore processing line. tangible benefits pyrrhotite iron ore processing line price in Mwanza Tanzania

More

Motherload Ore Gold and Silver Ore mined from the

May 22, 2012· This first specimen I will show is a very rich gold-bearing piece of quartz. I like this rock. It is just loaded with visible gold and some sort of silver ore. Looks to me like it might be some Specularite and possible some Pyrrhotite As shown in the first picture gold is visible throughout this specimen.

More

How to Recognize Hard Rock Gold Ores ICMJs Prospecting

How to Recognize Hard Rock Gold Ores. September 2017 by Chris Ralph. I regularly get inquiries along the line of: “Hey, I found this rock, and I think it might be gold ore. How can I tell?” Prospectors are always on the lookout for gold-bearing rocks that may be the source of any nearby placer gold.

More

cyanidation of a pyrrhotite bearing gold ore

cyanidation of a pyrrhotite bearing gold ore. An electrochemical study indicated that pyrrhotite oxidation is much slower than the cyanidation of gold and is an unlikely reaction to significantly consume dissolved oxygen and cyanide Dunn et al 1995 Pyrrhotite is in much higher concentration than gold in a gold ore.

More

The problem with pyrrhotite International Mining

“Ore minerals in base metal sulphide deposits are often mixed with sulphide gangue which must be removed by flotation in order to produce a saleable concentrate. In NiCu orebodies, the sulphide gangue is predominately pyrrhotite, whereas in Cu, CuZn, PbZn deposits, both pyrite and pyrrhotite can be present.

More

Pyrrhotite of Gold-Bearing Ores: Composition, Point

Pyrrhotite of Gold-Bearing Ores: Composition, Point Defects, Magnetic Properties, Gold Distribution. Normal 0 false false false MicrosoftInternetExplorer4 On a basis of comprehensive analysis of the crystal structure, chemical and phase composition pyrrhotites from ores and near-ore rocks, an analytical expression for calculating the

More

Establishing thE ProcEss MinEralogy of gold orEs

gold ores can be classified into 11 types (Table 1). Some metallurgical implications to these gold ore types are summarised below: Placers, quartz vein gold ores and oxidized ores: Generally, placers, quartz vein gold ores and oxidized ores are free-milling and gold can be recovered by gravity and/or direct cyanide leaching.

More