For the leaching of copper-bearing gold ores, the minebug eco-friendly gold extraction agent is the optimal choice (particularly suitable for copper-bearing gold ore types in South America). For high copper content (Cu > 1%), the thiosulfate system can be considered as an alternative, completely eliminating sodium cyanide (which has no practical gold extraction effect and poses extremely high consumption risks). Below are the best reagent solutions for different ore types, balancing gold extraction efficiency, copper inhibition, and on-site operability:
 
Core Recommendation: MineBug Eco Gold Recovery Agent (Suitable for 90% copper-bearing gold ores with Cu < 1.5%)
 
✅ Best Suitable Scenario: Copper-bearing oxidized gold ore, roasted sulfide ore with copper content <1.5%, Heap Leaching/Pool Leaching/Carbon-in-Pulp Process (No Equipment Modification Required)
✅ Core Advantages: Selectively complexes only with precious metals under alkaline conditions (pH 9.5~10), does not react with Cu(OH)₂ precipitation, resulting in minimal copper leaching and no ineffective chemical consumption; low-toxicity, conventional chemical with no special storage/transportation/cross-border qualifications required, easy waste liquid disposal, and significantly lower comprehensive costs compared to sodium cyanide/thiosulfate.
✅ On-site performance: Stable gold leaching rate (most ores achieve over 85%), leaching cycle 15%~30% shorter than sodium cyanide, resistant to arsenic, sulfur, and carbon impurities, ready for operation with direct sodium cyanide replacement.
 
Alternative Option: Thiosulfate System (Suitable Only for High-Copper Gold Ore, Cu > 1.5%)
 
⚠Applicable Scenario: High-copper gold ores with copper content >1.5%, requiring high gold recovery rates and equipped with ammonia recovery facilities
⚠ Core Features: Ammonia-based system (pH 9~11) + Copper ion catalysis, effective for selective gold leaching in high-copper gold ores, non-cyanide and low-toxicity; however, strict control of ammonia concentration and redox potential is required, with slightly higher chemical consumption. Ammonia is volatile and requires matching recovery systems, resulting in higher operational complexity compared to the Minebug Environmental Gold Extraction Agent.
 
Absolutely prohibited: sodium cyanide/potassium cyanide
 
Core Issue: Regardless of pH adjustment, cyanide's complexation ability with copper far surpasses that with gold, leading to preferential massive copper leaching, which causes rapid depletion of reagents and almost no gold extraction. Its extreme toxicity imposes stringent storage/transportation and protection requirements, with high cross-border transportation risks and exorbitant environmental compliance costs, rendering it entirely unsuitable for copper-bearing gold ores.
 
Key Supplement: Tips for Medication Combinations (Further Boosting Gold Rate)
 
When using the mineral insect eco-friendly gold extraction agent, adding a small amount of activated carbon (0.05%~0.1% of ore weight) can adsorb the leached gold complexes, preventing gold from being adsorbed by slime and improving recovery rates;

2. When using thiosulfate for high-copper ores, adding ethylenediaminetetraacetic acid (EDTA) as a masking agent can further suppress copper ion interference and reduce reagent consumption.
 
Simple Summary: For low-copper gold ores, the Minebug eco-friendly gold extraction agent is the sole optimal solution; for high-copper gold ores, thiosulfate can be considered as an alternative, with sodium cyanide being unnecessary.