How do you calculate black mass recovery yield?

Divide recovered black mass weight by incoming battery feed mass. With 2,850 kg recovered from 9,000 kg of feed, the yield is 31.67 percent.

What is a good black mass recovery yield?

It depends on chemistry and feed format, but well-run mechanical lines on cell or module feed often land in the low-to-mid 30s percent for black mass mass yield. At 31.67 percent you are 0.33 points short of a 32 percent target.

Why is black mass yield not higher?

Much of a cell's mass is casing, foils, separator, and electrolyte that report to copper, aluminium, and fines streams rather than black mass, so even excellent separation yields only a third of the feed as black mass.

What does the yield gap to target mean?

It is your target minus the actual yield. A positive gap, like the 0.33 points here, means you are below target and losing value-bearing material to other streams; a negative gap means you beat target.

How can I improve black mass recovery yield?

Tighten screen cut points, optimise shredder settings to liberate active material without over-pulverising foils, control moisture, and reduce black mass carried off in the copper-aluminium fraction.

Should I look at yield or grade?

Both. Mass yield tells you how much black mass you captured; grade tells you how much recoverable nickel, cobalt, and lithium it contains. A high yield with low grade can be worth less than a moderate yield of clean black mass.

Battery Recycling & Materials Recovery calculator

Black Mass Recovery Yield Calculator

Black mass recovery yield is the percentage of incoming spent-battery feed mass that ends up as recovered black mass, the lithium-, nickel-, cobalt-, and manganese-rich powder that downstream hydrometallurgy turns back into cathode precursors. Recycling plant operators and process engineers track it because black mass is the value-bearing product of the shredding and separation front end, and a few points of yield loss to fines, foils, or off-spec streams directly erodes recovered metal revenue. This calculator gives the yield against your incoming feed and shows the gap to your target, so you can tell quickly whether a shift or feedstock batch is performing. It is the cleanest top-level KPI for the mechanical pre-processing line.

What this calculator does

Calculate black mass yield from recovered black mass weight, incoming battery feed mass, and the target recovery yield for a recycling run.
a battery recycling plant needs to check whether a shredding and separation run recovered the expected black mass from incoming feed
It divides recovered black mass weight by incoming battery feed mass to give yield, then subtracts that yield from your target to show the gap in points.

Formula used

Black mass recovery yield = recovered black mass weight ÷ incoming battery feed mass
Yield gap to target = target black mass yield - calculated black mass recovery yield

Inputs explained

Recovered black mass weight:
Incoming battery feed mass:
Target black mass yield:

How to use the result

Use it per batch, shift, or feedstock type when monitoring shredding and separation performance or qualifying a new feed stream.
Black mass grade is not captured here, so a high mass yield that drags in copper, aluminium, or moisture can look good while delivering lower recoverable metal value downstream.

Current U.S. benchmarks

The producer price index for copper and brass mill shapes stands at 559.593 (BLS, May 2026), up 76.8% from a year earlier. Quotes priced off last quarter's material cost miss this move. Global copper trades at $13,484 per tonne (IMF via FRED, May 2026).
The U.S. has 5,397 electrical equipment and appliances establishments employing about 369,437 workers (Census County Business Patterns, 2023).

Common questions

How do you calculate black mass recovery yield? Divide recovered black mass weight by incoming battery feed mass. With 2,850 kg recovered from 9,000 kg of feed, the yield is 31.67 percent.
What is a good black mass recovery yield? It depends on chemistry and feed format, but well-run mechanical lines on cell or module feed often land in the low-to-mid 30s percent for black mass mass yield. At 31.67 percent you are 0.33 points short of a 32 percent target.
Why is black mass yield not higher? Much of a cell's mass is casing, foils, separator, and electrolyte that report to copper, aluminium, and fines streams rather than black mass, so even excellent separation yields only a third of the feed as black mass.
What does the yield gap to target mean? It is your target minus the actual yield. A positive gap, like the 0.33 points here, means you are below target and losing value-bearing material to other streams; a negative gap means you beat target.
How can I improve black mass recovery yield? Tighten screen cut points, optimise shredder settings to liberate active material without over-pulverising foils, control moisture, and reduce black mass carried off in the copper-aluminium fraction.

Last reviewed 2026-05-12.