CAS No.497-19-8 Metallic Ore Dressing Agent 100% 25kg Bag

As a key chemical agent in the gold ore dressing process, gold beneficiation agent plays a crucial role in the extraction and separation of gold minerals, enabling the efficient recovery of gold from ores through enrichment or dissolution.

CAS No.497-19-8
HS: 3824999999
Appearance: Grayish white powder
EINECS: 207-838-8

Dissolving gold minerals to form soluble complexes

Cyanide-based agents：By forming [Au(CN)₂]⁻ complex ions through the combination of cyanide ions (CN⁻) and gold ions, the dissolution process is accelerated in the presence of oxygen (reaction equation: 4Au + 8NaCN + O₂ + 2H₂O → 4Na[Au(CN)₂] + 4NaOH).

Thiosulfate-based agents：Catalyzed by copper ions, thiosulfate ions (S₂O₃²⁻) form [Au(S₂O₃)₂]³⁻ complex ions with gold ions, which is particularly suitable for copper-containing or carbonaceous gold ores.

Inhibiting the interference of gangue minerals

Functional performance：Non-cyanide agents (such as amino acid-based agents) can selectively dissolve gold minerals, reducing the dissolution of gangue minerals like quartz and clay, thus lowering the difficulty of subsequent gold extraction.

Data support：In an arsenic-containing gold mine, the use of glycine agents reduced the dissolution rate of gangue minerals by 40% compared with the cyanide method, while increasing the gold recovery rate to 88%.

Regulating the pulp environment to optimize leaching conditions

pH buffering function：Cyanide agents are inherently alkaline, maintaining the pulp pH at 10-11 to prevent the volatilization of hydrogen cyanide (HCN); the thiourea system requires the addition of sulfuric acid to adjust the pH to 1-2 to promote gold dissolution.

Redox regulation：Adding hydrogen peroxide (H₂O₂) as an oxidant in the thiosulfate system can increase the gold leaching rate by 30%-50%.

25KG BAG,26MT/20'FCL

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