Concentrate Grade Calculator
Infer actual concentrate grade from independent wet/dry and contained-metal observations, not feed/tailings inferred grade or product recovery. Caller independently verifies units, applicability and matching conditions; no operational recipe, safety certification, causal efficacy or legal/resource classification is inferred.
Description
Concentrate grade needs contained metal and concentrate mass on a dry basis.
Concentrate grade needs contained metal and concentrate mass on a dry basis.1
Moisture correction can change the denominator relative to wet delivery weights.
When to use Concentrate Grade Calculator
Use this tool to calculate or review the supplied observations under the stated rules. Match completed survey or ledger observations by block, segment or stage and confirm their units and boundaries.
How to use Concentrate Grade Calculator and understand its results
- Match completed survey or ledger observations by block, segment or stage and confirm their units and boundaries.
- Enter observedConcentrateWetTonnes, observedConcentrateDryFractions, observedContainedMetalTonnes, using the field meanings and rules below, then run the tool.
- Read observedMoistureCorrectedConcentrateGradeFraction. Inspect nested result fields where present, and review unknown records separately from known matches.
- Correct any reported input issue and run again. Before using a successful result, check the stated units, signs, reference scope and observation coverage.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| observedConcentrateWetTonnes | Observed concentrate wet tonnes | list of number | Required |
| observedConcentrateDryFractions | Observed concentrate dry fractions | list of number | Required |
| observedContainedMetalTonnes | Observed contained metal tonnes | list of number | Required |
Use aligned wet concentrate tonnes≥0, dry fractions [0,1] and contained-metal tonnes≥0. Require metal≤wet×dryFraction for each row and positive total dry concentrate. Return total metal/total dry concentrate.
grade=Σmetal/Σ(wetTonnes×dryFraction) Use the matching field units and the exact boundary, ordering and reference rules above.
| Output field | Meaning | Value type |
|---|---|---|
| observedMoistureCorrectedConcentrateGradeFraction | Observed moisture corrected concentrate grade fraction; dimensionless fraction, not a percent | number |
{
"input": {
"observedConcentrateWetTonnes": [
2,
3
],
"observedConcentrateDryFractions": [
0.5,
1
],
"observedContainedMetalTonnes": [
0.2,
0.6
]
},
"output": {
"observedMoistureCorrectedConcentrateGradeFraction": 0.2
}
}Limitations and assumptions
Units, ledger boundaries, survey interpretation and model applicability must be independently established. These summaries do not assign reserve/resource classifications or establish support adequacy, ventilation safety or an operating setting.
Missing required fields, unknown fields, wrong types and violated rules return input issues. Numeric values and outputs must be finite. Lists and matrices must be dense, without missing cells. Numeric lists allow at most 10000 entries; ordinary string lists allow at most 128 strings of 128 UTF-16 units each; numeric matrices allow at most 128 rows and 128 columns, subject to narrower requirements above.
Alternative or Complementary methods
For a related step, use Enrichment Ratio Calculator: Enrichment compares concentrate assay with feed assay within a matched trial. For a complementary comparison, use Tailings Mass Calculator: A tailings ledger needs a clear external boundary for feed, concentrate and exported or recycle material.
References
-
Concentrate Grade Calculator — tool.io
Similar or alternative tools
- Enrichment Ratio Calculator
Enrichment compares concentrate assay with feed assay within a matched trial.
- Tailings Mass Calculator
A tailings ledger needs a clear external boundary for feed, concentrate and exported or recycle material.