A classifier equipment with overflow end spiral completely submerged below the liquid surface.
Xinhai tailings dry stacking technology is mainly applied to the dewatering and concentrating of mineral tailings in the mineral processing plants. To reach the aim of tailings dry stacking and avoiding environmental pollution, it is the essential technology of green mine.
Phosphate Flotation Product Line is applied for complex structure phosphate with fine particle distribution, closed embeddedness relationship, difficult monomer dissociation, etc.
Barite is fragile and like a big tube. The separation methods of Xinhai are generally gravity separation, magnetic separation and flotation.
Alluvial gold processing solution mainly applies to processing alluvial gold with a large volume of gangue minerals. Alluvial gold processing is a set of mining processes, including crushing and screening, desliming stage, separating stage, etc.
The process of gold cyanidation is usually conducted in an outdoor setting though an indoor facility that meets safety regulations is sometimes employed. A cyanide salt such as potassium cyanide sodium cyanide or calcium cyanide the most popular choice is mixed with water and then applied to the ore. This part of the process is complete when most of the obtainable gold has liquified
A pulse of compressed air every 2 minutes for 10 seconds inflates the bag that breaks up the filter cake on the bag while pushing the filtered solution through the sample line. Having obtained a solution sample and analysed it for cyanide the result is used to control cyanide addition to the leach.
Cyanide process is also called as Macarthurforest Process. It is the process of extracting gold or silver from the ores by dissolving in a dilute solution of potassium cyanide or sodium cyanide. This process was introduced in the year 1887 by the Scottish chemists naming Robert W. Forrest John S. MacArthur and William Forrest.
Gold cyanidation technology is a technology process which put activated carbon into pulp and leaching with absorbing gold at the same time. It includes the stages such as leaching pulp preparation leaching and adsorbing gold removal carbon recycling pulp agitation and gold loaded carbon desorption.
The reactions that take place during the dissolution of gold in cyanide solutions under normal conditions have been fairly definitely established. Most agree that the overall cyanide equation for leaching and cyanidation of gold is as follows 4 Au + 8 NaCN + O2 + 2 H20 = 4 NaAu(CN)2 + 4 NaOH
Gold cyanidation in field scale is mainly conducted through heap leaching and tank leaching methods. The choice between alternatives depend on several factors including grade of precious metals in the ore size of the reserve etc. Regardless of the method selection the liability of the Aubearing ore to cyanidation is the most critical aspect.
Metallurgical ContentGeneral Theory on Cyanidation of Gold Cyanide SolutionsDensity of Leach SolutionsEffect of Aeration on Cyanidation ProcessDecomposition Process
The reaction of gold and aqua regia produces toxic fumes so the process must be conducted outside or in the fume hood. It takes around 20 minutes for gold to dissolve at room temperature. At the end of the reaction we have the solution of dissolved gold and copper compounds and solid crystals of silver salts.
4.1 In primary metallurgical processes for gold bearing ores gold is extracted with an alkaline cyanide solution. Metallurgical accounting process control and ore evaluation procedures depend on accurate precise and prompt measurements of the gold concentrations. 4.2 These test methods are comparative referee methods for compliance with compositional specifications for metal concentration or to monitor