Copper concentrate is the raw material for all copper smelters, which by processing it obtains an impure form of metallic copper, anode or blister copper, which is later used to produce high purity refined copper.
Clean copper concentrate is the concentrate after removing and/or normalizing impurities such as arsenic, antimony, and other penalty elements.
Platts assess TC/RC Clean Copper Concentrate according to below specifications:
| Base | Max | Min | |
|
Cu (%) |
25 |
38 |
18 |
|
Au (g/mt) |
1 |
30 |
|
|
Ag (g/mt) |
80 |
400 |
|
|
S (%) |
32 |
40 |
20 |
|
Fe (%) |
28 |
35 |
12 |
|
Pb (%) |
0.1 |
4 |
|
|
Zn (%) |
1 |
5 |
|
|
As (%) |
0.2 |
0.5 |
|
|
Sb (%) |
0.02 |
0.2 |
|
|
Hg (ppm) |
2.5 |
10 |
|
|
Bi (ppm) |
150 |
2000 |
|
|
F (ppm) |
330 |
100 |
Unit price: TC/RC US$ per mt and US Cents per pound
Volume: Minimum 5,000 mt
Payment terms: Letter of credit at sight
Timing: Loading 1–3 months forward
Copper futures quotation period: M+3, with M being the middle month of the 3-month loading period
We will also normalize for differential payable scales with Platts standards as below:
| Content | Payable of full content |
|
18<=Cu<=38 |
96.5%, min deduction of 1 unit |
|
Au<1 |
0% |
|
1<=Au<3 |
90% |
|
3<=Au<5 |
93% |
|
5<=Au<10 |
95% |
|
Au>=10 |
96% |
|
Ag<30 |
0% |
|
Ag>=30 |
90% |