What is Environmentally Friendly Gold Dressing Agent?
The environmentally friendly gold dressing agent can be directly used in gold production without changing the initial cyanidation gold extraction method, it can perfectly replace sodium cyanide.
Product Parameters
|
No. |
Product Name |
Features |
Application |
Usage Method |
|
1 |
1# Gold Dressing Agent |
Faint yellow solid powder, easy soluble in water |
Oxidized ore with gold, silver, tank leaching, dump leaching, pool leaching and CIP process |
(1) Alkalinity: PH value 11±1 (2) Quantity: 100~1500g/t |
|
2 |
2# Gold Dressing Agent |
White solid powder, easy soluble in water |
Acid slag with gold, silver or raw material |
(1) Acidity: PH value 1-4 (2) Quantity: 100~1500g/t |
Why Do You Need Environmentally Friendly Gold dressing Agent?
- The hazard of using sodium cyanide to extract gold:
1.Sodium cyanide is highly toxic and is life-threatening to human and animal, also pollutes the environment.
2.Sodium cyanide cannot meet technical and economical requirement of complex ore condition.
3.Slow leaching speed, long operation duration and results in low equipment utilization efficiency.
Features of Environmentally Friendly Gold Dressing Agent
*Low toxicity and environmentally friendly
*High recovery rate
*Good stability
*Easy to operate
*Short recovery period
*Less consumption
*Less cost
*Easy for storage and transportation
Case Study - Comparison Study of Environmentally Friendly Gold Dressing Agent and Sodium Cyanide in CIP Process
Please note that, according to the current process technology in the processing plant, the comparison study uses CIP process test, all leaching condition is same as processing plant, namely pulp density is 40%, grinding degree is 88%, PH value is 11-12.
Table 1 Test Result of 1st Group
|
Agent |
Gold grade in leaching residue/(g.t-1) |
Gold grade in tail liquid/(g.m-3) |
Carborundum grade/(g.t-1) |
Gold leaching rate % |
Gold adsorption rate% |
Gold leaching recovery rate% |
|
Environmentally friendly gold dressing agent |
0.36 |
0.004 |
60.26 |
86.96 |
99.83 |
86.81 |
|
Sodium cyanide |
0.37 |
0.009 |
59.16 |
86.59 |
99.62 |
86.27 |
Please note that, the raw ore grade is 2.76g/t, leaching time is 17hrs, agent density is 0.05%, carbon density is 20g/L.
Table 2 Test Result of 2nd Group
|
Agent |
Gold grade in leaching residue/(g.t-1) |
Gold grade in tail liquid/(g.m-3) |
Carborundum grade/(g.t-1) |
Gold leaching rate % |
Gold adsorption rate% |
Gold leaching recovery rate% |
|
Environmentally friendly gold dressing agent |
0.32 |
0.005 |
94.22 |
84.24 |
99.71 |
83.99 |
|
Sodium cyanide |
0.34 |
0.007 |
99.32 |
83.25 |
99.59 |
82.91 |
Please note that, the raw ore grade is 2.03g/t, leaching time is 17hrs, agent density is 0.07%, carbon density is 10g/L.