Alat Pertambangan Kalkulator Kadar Cutoff Bijih

Kalkulator Kadar Cutoff Bijih

Perkirakan kadar cutoff impas dari harga logam, recovery, biaya penambangan, biaya pengolahan, dan G&A.

Mendukung konversi unit, perbandingan skenario harga, analisis sensitivitas, ekspor PDF, dan penggunaan multibahasa lintas wilayah.

Portal Alat | Finite Field
Alat Pertambangan

Hitung kadar cutoff impas secara instan

Alat Pertambangan

Bandingkan Rendah / Dasar / Tinggi berdampingan

Alat Pertambangan

Dibuat untuk pengguna multibahasa dan koma desimal

What this tool covers

Mendukung konversi unit, perbandingan skenario harga, analisis sensitivitas, ekspor PDF, dan penggunaan multibahasa lintas wilayah.

Instant calculation

Normalize prices and costs, then calculate the break-even cutoff grade immediately.

Unit conversion

Convert g/t, %, ppm, oz/t, and kg/t to absorb differences in regional notation.

Scenario comparison

Compare Low / Base / High cases by changing metal price only.

Easy to share

Save the result as a PDF from the browser print dialog and use it in meetings right away.

How to use

  1. 1 Enter the metal price currency, unit, and recovery.
  2. 2 Align mining cost, processing cost, and G&A to the same ore basis unit.
  3. 3 Add scenario rows if needed and review the sensitivity span.
  4. 4 Check the cutoff grade and export it by CSV or PDF.

Contoh

Gold

Input / Output

Input

2400 USD/oz, recovery 90%, mining 18 USD/t, processing 14 USD/t, G&A 8 USD/t

Output

cutoff grade about 0.576 g/t (about 0.0185 oz/t, 0.0000576%, 0.576 ppm)

Copper

Input / Output

Input

4.10 USD/lb, recovery 88%, mining 22 USD/st, processing 12 USD/st, G&A 8 USD/st

Output

cutoff grade about 0.479% (about 4,790 ppm)

Silver scenario comparison

Input / Output

Input

24 / 27 / 30 USD/oz, recovery 85%, total cost 40 USD/t

Output

Low: about 61.1 g/t / Base: about 54.2 g/t / High: about 48.2 g/t

Glosarium

cutoff grade
The minimum grade used as a break-even reference.
recovery
The share of metal recovered from the ore.
G&A
Short for General & Administrative expense.
ppm
In this tool, ppm uses the same number as g/t on a metric-tonne basis.
st / lt
Short ton and long ton. Ambiguous ton is not accepted.

Formulas

Metal price / g = metal price ÷ grams per price unit
Total cost / t ore = (mining cost + processing cost + G&A) × ore basis factor
cutoff grade (g/t) = total cost ÷ (metal price / g × recovery)
g/t → % = g/t ÷ 10000
g/t → oz/t = g/t ÷ 31.1034768

FAQ

What is cutoff grade?

It is the minimum grade used as a break-even reference. It changes with metal price, recovery, and cost assumptions.

Does this tool handle payability?

Not in the first version. It assumes 100% payable and uses recovery only.

Are ppm and g/t the same?

Yes, on a metric-tonne basis this tool uses the same number for ppm and g/t. It treats 1 ppm = 1 g/t.

Can I use short ton and long ton?

Yes. Enter t, st, or lt explicitly. Ambiguous ton is not accepted.

Can I save PDF output from the browser only?

Yes. The tool provides a print layout and uses the Chrome / Edge / Safari print dialog for PDF saving.

Catatan

  • Alat ini hanya untuk referensi cepat dan tidak menggantikan JORC / NI 43-101 / laporan teknis.
  • Dilusi, kehilangan tambang, payability, royalti, pajak, dan ongkos kirim tidak termasuk dalam perhitungan inti.
  • Masukkan harga logam dan biaya dalam mata uang yang sama.
  • Semua perhitungan tetap di browser dan tidak dikirim ke server.