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Inside the plant

How we recycle alkaline batteries

Four stages, all in one building in Phoenix. Here is what happens to a load between the dock and the finished material.

Wide view of the processing floor at the Phoenix facility

Watch

A load, start to finish

Receiving, the sorting line and size reduction, in a few seconds.

A load moving through the plant: receiving, the sorting line, and size reduction

No sound. The four stages are described in full below.

  1. 01Receive
  2. 02Sort by chemistry
  3. 03Size reduction
  4. 04Separate and recover
01

Receive

Inbound loads arrive at our Phoenix facility, arranged by the customer through third party freight. Loads are weighed, logged and assigned a receipt record that follows the material through the plant.

A worker logging an inbound gaylord of spent alkaline batteries at receiving
02

Sort by chemistry

Material is sorted by chemistry, by hand and by an automated x ray based sorting system that identifies cell chemistry as it passes. Anything outside our accepted list is pulled before processing.

Batteries being sorted by chemistry at the sorting bench
03

Size reduction

Sorted alkaline cells are mechanically processed for size reduction, opening the cells so the internal chemistry can be liberated from the steel and brass around it.

Interlocking steel shredder rotors inside the size reduction machine
04

Separate and recover

The shredded stream is separated into zinc manganese concentrate, steel, brass and a small residual fraction. Each output is collected, graded and moved on to its buyer.

Separation stage dividing the shredded stream into labelled collection bins

What comes out

Recovered materials

Across a processed load we recover 85 to 95% of incoming material by weight as marketable product.

Recovered black mass, a fine dark zinc and manganese bearing concentrate

Black mass

Zinc manganese concentrate

The primary output. A fine zinc and manganese bearing concentrate recovered from the cell interior, sold on to downstream refiners and fertiliser feedstock buyers.

Shredded scrap steel recovered from alkaline battery casings

Scrap ferrous

Steel cans and casings

Clean shredded steel separated magnetically from the shredded stream and sold into standard ferrous scrap markets.

Recovered brass current collectors

Brass

Current collectors

Non ferrous brass recovered during separation, graded and sold on to metal buyers.

The mixed residual fraction remaining after recovery

Residual fraction

Non recoverable

The small remaining fraction that cannot be recovered as marketable product, managed and disposed of responsibly.

Recovery figures are based on our own mass balance across processed alkaline material. Methodology available on request.

Sorting by chemistry

Sorting is the step that protects everything downstream. A single lithium cell in a shredder is a fire, so chemistry sorting is done twice over: manually by hand, and by an automated x ray based system that identifies cell chemistry as material passes through it. Anything outside our accepted list is pulled before it reaches size reduction.

No hazardous inputs

Our process is mechanical. Material is sorted and physically separated rather than dissolved, so we do not introduce hazardous reagents to recover what is inside the cell.

Documentation

Every load is weighed and logged on arrival and carries a receipt record through the plant. Once processed, we issue a certificate of recycling covering the material received, its weight, how it was processed and where the recovered outputs went.

A certificate of recycling is a record of what happened to your material. It is not a regulatory clearance and does not transfer your obligations as a generator or handler.

Have a load of spent alkaline batteries?

Tell us the volume, the chemistry and where it is sitting. We will come back with pricing and freight guidance.