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Last reviewed 2026-08-23

Published case studyBrasil Mineral · #441 · Jul 2024

Grinding throughput on a gold mill

Industrial engagement · published in a trade magazine

+6%throughput vs manual
US$781Kannual margin, extrapolated
25controlled pilot (days)

Problem

Grinding is the largest energy consumer on a mill. Setpoint drift and harder, lower-grade ore make it difficult to hold throughput and particle size at the same time.

Method

Two-year collaboration with the plant process-engineering team. Controlled 25-day trial from 10 January 2024 to 5 February 2024. Modes alternated every 48 hours. Only periods with at least 85% active hours were compared — 265 hours in each mode.

Measured result

+6% throughput (435 t/h vs 412 t/h). 115,347 tonnes processed vs 109,079 tonnes. Particle size (p80) held. Energy intensity (kWh/t) stayed essentially unchanged. Extrapolated full-year effect at this plant: about 2,694 additional ounces of gold, about US$781,000 incremental annual profit net of all-in sustaining cost.

Source

Brasil Mineral magazine, issue 441, July 2024.

Fabio Suizu, FounderIdentified practitioner. The mill is a Canadian mid-tier gold producer. The operator is not named here because we do not have authorization to publish the company name or logo.

This is a published industrial engagement. It is not an API-platform customer logo.

What is on this page

One published industrial engagement. We do not have authorization to name the mill or show its logo. We also do not have public API-platform customer logos. If you want a public API reference, write to hello@brainiall.com — we will not invent one.

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