Copper concentrate sedimentation standard

I. Scope of application

This standard is applicable to domestic copper concentrate procurement and settlement of copper content after entering the factory.

Second, the quality standard

Third, the settlement standard

1, copper content

When the copper content is 20.00%, it will settle normally. Settlement price of copper concentrate = average settlement price of 65438 months+0 # electrolytic copper futures of Shanghai Metal Exchange × copper concentrate pricing coefficient+copper grade change price difference.

Copper concentrate price difference table corresponding to copper grade change

2. Deduction of impurities exceeding the standard (gradual deduction)

Normal settlement when (1)p b+ Zn≤8.00%; 8.00 < Pb+Zn ≤ 12.00, compared with the standard, the settlement price drops by 100 yuan/ton for every difference; 12.00 < Pb+Zn ≤18.00, because Pb+Zn is greater than 8.00%, 200 yuan/ton will be lowered for every settlement price exceeding 1%; When the price is 18.00 < Pb+Zn, the settlement price of 1% will be lowered by 800 yuan/ton from when Pb+Zn is greater than 8.00%.

(2) Normal calculation of MgO ≤ 4.00%; 4.00% < MgO ≤ 8.00%, compared with the standard, the settlement price will drop by1%for every drop; When 8.00% is less than MgO, the settlement price will be reduced by 200 yuan/ton every time it exceeds 1% from when MgO is greater than 4.00%.

(3) Normal settlement when As ≤ 0.40%; 0.40 < As ≤ 1.00, compared with the standard, the settlement price drops by 50 yuan/ton for every 0. 1%; When 1.00 < As ≤ 1.50, the settlement price will drop by 100 yuan/ton every time it exceeds 0. 1% because As is greater than 0.40%; When 1.50 < As, as is greater than 0.40%, the settlement price will be reduced by 200 yuan/ton every time it exceeds 0. 1%; When as > 3.0%, it is rejected.

(4) Normal settlement when S ≥ 25.00%; When S < 25.00%, the settlement price will decrease by 20 yuan/ton for every reduction of 1% compared with the standard.

For example:

Current copper price: 26,000, 20% of standard copper concentrate.

Copper concentrate price = copper futures price × pricing system = 26000× 0.8 = 2.08 (including tax)

Copper concentrate price (excluding tax) = price including tax/(1.17) =1.78.

Current copper price: 26,000, standard copper oxide ore price 10%.

Copper oxide ore price = copper futures price × pricing system = 26,000× 0.63 =16380.

Copper oxide ore price (excluding tax) = price including tax/(1.17) =14000.

Calculation method of low-grade copper ore price

The price of low-grade copper ore is indirectly calculated by subtracting the mineral processing cost from the price of copper concentrate, hoping to help you.