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OBORTS Company, Opposite the residence of old General Mambou, Near Dragage, Bastos, Yaoundé, Cameroon
Email: [email protected]
It is a high technological enterprise that integrated research , manufacture, sales and service . The company has multiple subsidiaries such as Mineral Processing Research Institute
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The heap leaching process is to stack the ore on the waterproof material, the cyanide solution is permeated through the ore layer, so the gold is leached from the ore, and discharged to the pregnant solution tank for recovery. The pool leaching process is equipped with a leaching …
When grinding fineness of undressed ore cyanide is- 200 mesh and 82.88%, calcium oxide is used to protect the base, the amount of calcium oxide is 8 ~ 9 kg/t; The dosage of sodium cyanide is 1 kg/t, cyaniding for 24 hours and the leaching rate of gold is 88.00%.
Since the 1890's, cyanide has been used to recover gold from gold bearing ores. And today, over 115 years later, most of the worlds gold is recovered with cyanide playing a large part in the beneficiation of the yellow precious metal. Chemically, it is a rather simple reaction: 4 Au + 8 (NaCN) +O2 + 2 H2O = 4 NaAu (CN)2 + 4 NaOH
After crushing and screening, grinding and classifying, gold ore is sent to agitation tank for pulp stirring, then sent to Xinhai flotation cell for gold flotation process, finally get the gold concentrate after thickening and dewatering.
Cyanidation has a history of more than 200 years since it was applied to gold and silver ore extraction in 1887. At present, cyanidation is still one of the main gold extraction process due to its high recovery rate, high adaptability to ore and local production.. Generally, cyanidation methods can be divided into two categories: agitation cyanidation and percolation cyanidation.
Xinhai desorption electrolysis system implements high-temperature desorption electrolysis on gold in the gold-loaded carbon through the mixed liquor of sodium cyanide and sodium hydroxide.
Gold, recognizable by its yellowish cast, is one of the oldest metals used by humans. As far back as the Neolithic period, humans have collected gold from stream beds, and the actual mining of gold can be traced as far back as 3500 B.C. , when early Egyptians (the Sumerian culture of Mesopotamia) used mined gold to craft elaborate jewelry, religious artifacts, and utensils such as goblets.
Advantages of leaching pulp in Xinhai gold CIL process: Greatly reduce the number of leaching tank; Shorten the time of gold staying in the cyanide pregnant solution; Reduce the capital backlog in gold staying process, get gold quickly, fast capital return.
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At present, most cyanidation gold extraction plants use cyanide as gold extraction reagent. As is well known, cyanide is a kind of highly toxic hazardous chemical, so any mis-operation in transportation, storage, use and other links will cause the events of serious environmental pollution, malignant poisoning, etc. Therefore, many countries and regions have legislated against or restricted the
At present, most cyanidation gold extraction plants use cyanide as gold extraction reagent. As is well known, cyanide is a kind of highly toxic hazardous chemical, so any mis-operation in transportation, storage, use and other links will cause the events of serious environmental pollution, malignant poisoning, etc.
Gold cyanidation (also known as the cyanide process or the MacArthur-Forrest process) is a hydrometallurgical technique for extracting gold from low-grade ore by converting the gold to a water-soluble coordination complex.It is the most commonly used leaching process for gold extraction.. Production of reagents for mineral processing to recover gold, copper, zinc and silver represents