Email Address

[email protected]

Phone Number

+0086-371-86162511

can nitric acid extract gold from sulfide ore

Get In Touch

Can Nitric Acid Extract Gold From Sulfide Ore

Can Nitric Acid Extract Gold From Sulfide Ore Gold recovery However cyanidation after dissolving the ore sample in hydrochloric acid HCl sulfuric acid H 2 SO 4 ferric chloride FeCl 3 and nitric acid HNO 3 respectively increased the gold recovery to 981 This shows that the ore is a sulfide refractory gold ore. Online consulting

Get Quote

can nitric acid extract gold from sulfide ore

Gold extraction refers to the processes required to extract gold from its ores. This may require a combination of comminution, mineral processing, . Nitric acid or forced air oven oxidation can also be used to dissolve iron from the . Get Now. Pre-treatment of a refractory gold sulfide ore by means of

Get Quote

US474591A Process of extracting gold from sulphide ores

2. The herein-described process of treating vauriferous sulphurets, which consists in con-' centrating the sulphurets, acting upon them by a solution of nitric acid mixed with nitrate of mercury, removing and collecting the solution, and then amalgamating the gold. 3.

Get Quote

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

This improvement by nitric acid pre-treatment can be attributed to the decomposition of sulfide minerals that encapsulate gold and silver. These findings suggest that nitric acid leaching can be...

Get Quote

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

Although gold does not dissolve in pure nitric acid solutions, so me dissolution of gold in sulfide systems can be attributed to the formation of thiosulfate during the oxidatio n process (Marsden

Get Quote

Gold Parting using Nitric Acid 911 Metallurgist

24-03-2016· A portion of the alloy was boiled with dilute, then strong nitric acid, but it did not wholly part, the gold button remaining being only 964 fine. By taking a somewhat greater proportion of sodium, parting can be effected by means of nitric acid. This alloy, as will be shown, will part with sulphuric acid, followed by fusion with nitre cake.

Get Quote

A Method for Leaching or Dissolving Gold From Ores or

18-08-2005· It is known that gold can be efficiently leached from gold- bearing ores using a mixture of hydrochloric acid, ferric chloride, and manganese dioxide.12 The chemical reaction involved during the

Get Quote

Method of gold extraction from sulphide gold-bearing ores

From received gold-containing eluate it is extracted gold by decomposition reaction or by electrochemical method. Additionally decomposition reaction is implemented by metals such as magnesium, zinc or iron, or by sulphides. Then it is implemented recovery of heavy-basic anionite by solution of mixture of sulfite and sodium sulfide and ammonium.

Get Quote

Extract Gold From Electronic By Nitric Acid

2016-2-20To recover gold from computer CPUs aqua regia is the best method. Because CPUs have gold wires in them and there is no base metal present inside the CPUs. To make aqua regia we have to mix 3 parts hydrochloric acid and 1 part nitric acid. Details

Get Quote

How to Use Bleach on Gold Ore to Remove Gold Sciencing

24-04-2017· Pour the acid-and-bleach mixture into the plastic bowl with the ore grains and stir. Allow four hours for the gold to dissolve, stirring every 20 minutes. The chlorine reacts with the gold inside the ore to form gold chloride. Filter the ore and bleach solution

Get Quote

can nitric acid extract gold from sulfide ore

Gold extraction refers to the processes required to extract gold from its ores. This may require a combination of comminution, mineral processing, . Nitric acid or forced air oven oxidation can also be used to dissolve iron from the . Get Now. Pre-treatment of a refractory gold sulfide ore by means of

Get Quote

ON THE ISSUE OF GOLD EXTRACTION FORM PERSISTENT

The technology of preparation of such ores for cyanidation based on the oxidation with nitric acid results in the escape of large amount of sulfur which significantly reduces the gold extraction into the solution in the course of cyanidation. The technology of pressure oxidation of sulfide ores is related to high capital and operational costs.

Get Quote

A Method for Leaching or Dissolving Gold From Ores or

18-08-2005· It is known that gold can be efficiently leached from gold- bearing ores using a mixture of hydrochloric acid, ferric chloride, and manganese dioxide.12 The chemical reaction involved during the

Get Quote

Gold extraction Wikipedia

Gold extraction refers to the processes required to extract gold from its ores.This may require a combination of comminution, mineral processing, hydrometallurgical, and pyrometallurgical processes to be performed on the ore.. Gold mining from alluvium ores was once achieved by techniques associated with placer mining such as simple gold panning and sluicing, resulting in direct recovery of

Get Quote

Method of gold extraction from sulphide gold-bearing

Method of gold extraction from sulphide gold-bearing ores. C22B3/04 by leaching (C22B0003180000 takes precedence);; C22B11 Obtaining noble metals. FIELD: metallurgy. SUBSTANCE: method includes leaching by solution of mixture of hydrosulphite and sodium thiosulfate and ammonium, sorption of complex thiosulfate-gold on heavy-basic anionite

Get Quote

How to Refine Gold by the Acid Method

Remove from heat and add one pound of urea to the water. Despite the unpleasant name, this is just a harmless industrial chemical that has no smell and you will use to adjust the pH of the acid. 7. Add your water/urea mix to the acid. Be sure to do this slowly, to ensure no gold particles are lost.

Get Quote

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

The nitric acid pre-treatment improved the extraction of. gold and silver in subsequent cyanide leaching (1.5 g/L NaCN) to 82% Au an d 87.5% Ag with a concomitant decrease. (up to 54 %) in cyanide

Get Quote

Sulphide Gold Ore Treatment by Leaching and Flotation

18-04-2016· Problem with gold recovery from sulphide ore: How may a mill get the maximum recovery of gold from a sulphide ore, at the least capital cost and at the same time obtain the highest net return.This latter point is most important. In many cases a gold mill using an all-cyanide flowsheet with fine grinding of all the ore will report very low gold content in the tailings particularly on an

Get Quote

Sulfides Gold Recovery Methods ICMJ's Mining Journal

04-09-2015· Posted August 21, 2015. We have had great sucess recovering gold from sulfides with out thiourea based solution. Our recovery rate is usually 94 to 96%. The key to recovery with sulfides is the grind size of the ore while leaching to make sure that your leach solution can make Co

Get Quote

Extraction of gold from platinum group metal (PGM)

01-01-2005· Extraction of tetrachloroauric acid is independent of hydrochloric acid concentration, and solvents can be loaded to more than 100 g/L gold without phase inversion. Fig. 5 represents a model of the ion-pair formed between the extracted tetra chloroauric anion, and the

Get Quote
Latest News