Welcome to visit us!

[email protected]
MENU
  1. Home
  2. > pre treatment of refractory gold ores with nitric

pre treatment of refractory gold ores with nitric

Metallurgical ContentGold Leaching & Processing of Arsenic OreMispickel (Arsenopyrite: FeAsS).6Leaching and RecoveringGoldfrom Antimony MineralsStibnite (Antimony Sulphide, Sb2S2)TellurideGold OreProcessingSolubility of TelluridesGold Extraction from Carbonaceous OreListGold RefractoryProcess Methods Wheregoldis associated with arsenic, antimony, tellurium, and …

Get Price
Our Products

Our products sell well all over the world,and have advanced technology in the field of crushing sand grinding powder.

US20090158893A1   Microbialpre treatmentof double
US20090158893A1 Microbialpre treatmentof double

The present invention is directed to recovery ofgoldfromrefractoryand doublerefractory oresusing a fungal agent and/or culture media. US20090158893A1 - Microbialpre-treatmentof doublerefractory gold ores- Google Patents Microbialpre-treatmentof doublerefractory gold oresDownload PDF Info Publication number ...

Online Chat
Rcovery ofgoldin pyriticores  Mine
Rcovery ofgoldin pyriticores Mine

Low gradeoresthat do not respond well to cyanide or flotation are generally referred to a "refractory"ore. Which usually means that it needs to be roasted to release thegold. Roasting has to be one of the most expensive methods of recoveringgoldwith current environmental considerations, and is usually cost prohibitive, except in a few ...

Online Chat
pretreatmentof refractory oresprior togoldleaching
pretreatmentof refractory oresprior togoldleaching

goldleaching treatmentrijlesgroningen . Leaching of agoldbearing partially roasted sulphide Laboratory Oct 12 2001 In the caseof refractory orescontaining complex mineralsgoldcomplexrefractory gold oresis apre-oxidationtreatmentprior thegoldleaching step to extractgoldfromrefractory oresby the pretreatment of sulfuric acid.

Online Chat
(PDF) Nitric Acid Leaching for Pre Treatment of a Copper
(PDF) Nitric Acid Leaching for Pre Treatment of a Copper

Thenitricacidpre-treatmentexperiments forrefractorysilveroreandgold/silver concentrate were performed for 2.5 hours at 5M HNO 3 and 80 o C. Before and after ...

Online Chat
pretreatmentof refractory oresingoldleaching process congo
pretreatmentof refractory oresingoldleaching process congo

Developments in the pretreatmentof refractory goldminerals bynitricacid D.-X. LI College of Environmental Science and Engineering, China The paper covers many literature reports of processes using nitrogenous species as an oxidant for processingrefractory gold ores, especially development in the pretreatmentof refractory gold

Online Chat
The mechanism of leaching ofgoldfromrefractory ores
The mechanism of leaching ofgoldfromrefractory ores

Oxidativepre-treatmentin thiosulphate leaching of sulphidegold oresThe effect of jet reactors on the leaching ofgoldfromoresFungal pretreatment of sulfides inrefractory gold ores

Online Chat
Diagnostic Leaching ForRefractory Gold Ores| SRK Consulting
Diagnostic Leaching ForRefractory Gold Ores| SRK Consulting

A diagnostic leach test can be very useful to qualitatively assess howgoldoccurs within theoreand the extent to which it may berefractory. Several different permutations of diagnostic leach tests depend on specific objectives, but they generally involve the sequential leaching of agold oresample with progressively stronger reagents ...

Online Chat
Preg robbinggold ores  ScienceDirect
Preg robbinggold ores ScienceDirect

Jan 01, 2005· The Nitrox and Arseno (Redox) processes have been developed to treat sulfiderefractory gold ores; however, they may be used for carbonaceousoressince the oxidationwith nitricacid has been shown to passivate to some extent the carbonaceous material and reducegoldadsorption (Anonymous, 1996; Afenya, 1991; Díaz and Snihvrowych, 2004).

Online Chat
(PDF) A Preliminary Study on Nitric Acid Pre treatment of
(PDF) A Preliminary Study on Nitric Acid Pre treatment of

This study was undertaken to evaluate thenitricacid leaching as a potentialpre-treatmentprocess prior to cyanidationof refractory gold/silverores. Thenitricacidpre-treatmentexperiments ...

Online Chat
Nitric Acid Treatment of Olympiada Deposit Refractory Gold
Nitric Acid Treatment of Olympiada Deposit Refractory Gold

This article covers acidnitricleaching of Olympiada depositrefractory gold-bearing concentrate after alkaline leaching of stibnite. Thermodynamic analysis of the reaction pyrite and arsenopyritewith nitricacid chemical equations was performed. Equilibrium Eh-pH Pourbaix diagrams of heterogeneous systems studied, containing iron and arsenic were charted.

Online Chat
REFRACTORY GOLD   PanTerra Gold Limited
REFRACTORY GOLD PanTerra Gold Limited

Refractory gold oresrequire either or both physical and chemicalpre-treatment, prior to cyanidation. The proportion of knownrefractory goldresources relative to overallgoldresources, is increasing year on year throughout the world. Albion Oxidation Process.

Online Chat
GOLDRECOVERYOF REFRACTORYSULFIDE CONCENTRATES …
GOLDRECOVERYOF REFRACTORYSULFIDE CONCENTRATES …

Recovery ofgoldincreased gradually to its maximum value of 93.05% as the value of cyanide strength increased from 0.8 to 1.2% and the addition of sodium nitrite raise to 1.2 M. No improvement for further addition of nitrites. This introduction of new hydrometallurgicalpre-treatmentprocess has given more option for treatingrefractory ores.

Online Chat
Treatment of carbonaceous refractory gold ores   ScienceDirect
Treatment of carbonaceous refractory gold ores ScienceDirect

Jan 01, 1991· Minerals Engineering, Vol. 4, Nos 7-11, pp. 1043-1055, 1991 0892-6875/91 $3.00 + 000 Printed in Great Britain 1991 Pergamon Press plcTREATMENTOF CARBONACEOUSREFRACTORY GOLD ORESP.M. AFENYA Dept. of Mining Engineering, UniversityofTechnology, Lae, Papua New Guinea ABSTRACTGold orescan be categorized into two types - free milling andrefractory.

Online Chat
NitricAcidTreatmentof Olympiada DepositRefractory Gold
NitricAcidTreatmentof Olympiada DepositRefractory Gold

This article covers acidnitricleaching of Olympiada depositrefractory gold-bearing concentrate after alkaline leaching of stibnite. Thermodynamic analysis of the reaction pyrite and arsenopyritewith nitricacid chemical equations was performed. Equilibrium Eh-pH Pourbaix diagrams of heterogeneous systems studied, containing iron and arsenic were charted.

Online Chat
Pretreatment Process on Refractory Gold Ores with As
Pretreatment Process on Refractory Gold Ores with As

Gold oresare consideredrefractoryifgoldextractions from a conventional cyanidation process are less than 80% even after fine grinding. 1) Arsenic-bearingrefractory gold orehas stones extremely difficult to deal with. In the stones,goldis locked up in arsenic mineral matrix as the form of microscopic or submicroscopic lattice.

Online Chat
acidic pretreatment ofgold refractory oreprocessing
acidic pretreatment ofgold refractory oreprocessing

US5013359A. A process for recoveringgoldfrom arefractorysulfidicorewhich has been suspended in an aqueous slurry and oxidized usingnitricacid so that substantially all of thegoldin theoreis made available for recovery and at least a portion of the sulfidic components present during the oxidation are oxidized to elemental sulfur, comprises bubbling air as a discontinuous phase ...

Online Chat
Refractory GoldProcesses
Refractory GoldProcesses

Refractory Gold Ore TreatmentMethods. Cyanidation and concentration ofgoldand silverores. ListGold RefractoryProcess Methods. The use of roasting for the oxidation of sulfides has declined over the years. However. Resolute Mining resurrected the Syama project in Mali by converting the process from a whole-oreroast to flotation followed ...

Online Chat
Acquisition of the Biox Group
Acquisition of the Biox Group

Oct 17, 2008· The Biox Business is the owner of a proprietary and patented technology, known as the BIOX process, for thepre-treatment of refractory oresand …

Online Chat
to-top
Chat Online
shangwutong