ADVANTAGES OF Ele-auex AGENT
ADVANTAGES OF Ele-auex AGENT
- ADVANTAGESOF Ele-auex AGENT
Technology Overview
Comparative metallurgical and eco-toxicological tests on Ele-auex product series vs Cyanide and Aqua regia on toxicity, work efficiency and operational costs reveal that Ele-auex has several advantages over cyanide and aqua regia in gold extraction processes. These advantages can be summarized as following:
Low Toxicity
Both Ele-auex E and O product series are low-toxic. Eco-toxicology test results indicate that the toxicity of the Ele-auex series is only about 1-2% in that of cyanide.
| Chemical | NaCN | CuSO4.H20 | ZnCl2 | K3Fe(CN)6 | Ele-auex (O) | Ele-auex (E) | K4Fe(CN)6 |
|---|---|---|---|---|---|---|---|
| Test Specie | Rainbow Trout | COBIA | COBIA | BASS | Rainbow Trout, Daphnia Magna | Golden Fish | BASS |
| LC50(ug/l) | 27 | 60 | 313 | 1600 | 1000-4999 | 6500 | 13900 |
| Test Specie | Rat | Rat | Rat | Rat | Rat | Rat | Rat |
| LD50 (mg/kg) | 10 | 482 | 329 | 2970 | 584 | 680 | 5000 |
Ordinary Product.
No Special Permit Required for product Purchase, and Transportation
One of the biggest challenges most of the small-medium gold miners facing is that they can’t get a government permit to either purchase or use sodium cyanide due to its extreme toxicity and it is an internationally highly restricted chemical. Many small-scale gold project owners are accordingly can’t develop their gold projects due to lack of the essential but toxic chemical to process gold ores. With Ele-auex product agent, this barrier will be lifted.
With Ele-auex product, this barrier will no longer exist because Ele-auex product is classified as ordinary goods and can be transported via marine, air freight and ground. No purchase permit or usage permit is required. Ele-auex product series has been tested and certified as ordinary goods by the authorized national institute (CNAS).
Selective & Extremely Fast gold Stripping Feature
Ele-auex E product series has a unique feature that it can selectively strip surface gold from plating electronic parts such as pins, connectors, RAM, CPU and PCB, while other metals like copper, nickel, aluminum are not or slightly attacked. This selective stripping feature makes the gold stripping process much easier, and it simplifies E-waste recycling processes into separate steps in which specific metals are separated and recovered.
In addition, the Ele-auex E series has exceptional fast gold stripping and gold/silver electrolysis efficiency that can strip surface gold in minutes.
In the electrolysis method, silver/gold plated parts can be instantly electrolyzed (gold/silver striped and precipitated on cathode plate directly) in the Ele-auex E series agent solution.
Multiple Precious Metals Stripping/Recovery Capability
Ele-auex agent can strip not only Au, but also Ag, Pd and Pt (if any) from precious metal bearing materials. These precious metals can be easily recovered through one of our three precipitation methods. The table below shows compiled results of precious metal recovered through zinc cementation and chemical precipitation method of E series pregnant solution.
| Au | Pt | Pd | Ag | In | Ir | |||
| Zinc Cementation | 2.2 | 10.04 | 93.75 | 0.00 | 0.34 | 0.98 | 0.00 | 0.00 |
| Chemical Precipitation | 2.2 | 10.03 | 94.75 | 0.00 | 0.00 | 1.34 | 0.03 | 0.00 |
| Zinc Cementation | 1.0 | 1.39 | 87.59 | 1.21 | 1.19 | 2.40 | 0.04 | 0.15 |
| Zinc Cementation | 1.4 | 6.34 | 94.67 | 0.00 | 0.00 | 1.22 | 0.00 | 0.00 |
The O series has better leaching performance than cyanide in gold ore lixiviation. For most common gold ores, Ele-auex (O) can reach a 90% leaching rate in 48 hours (CIL/CIP) while Ele-auex reagent consumption rate is lower than cyanide.
The charts below show original industrial CIP test results on sulphide (pyrite, arsenopyrite) gold ores at a gold mine in Myanmar with the Ele-auex O product series. Test results indicate that the Ele-auex O product series has better leaching performance in gold ore leaching kinetics (short leaching time), less reagent consumption rate (click the images to view their large size charts).