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Alma aluminium plant

Aluminium Smelter in Canada. Approximate location 48.54889, -71.65146.

Aluminium SmelterCanadaCO₂ reported

Alma aluminium plant is an aluminium smelter in Canada with a reported capacity of 480,000 t of alumina/aluminum. It smelts alumina into primary aluminium by high-current electrolysis. It is operated by Rio Tinto Ltd. By capacity it ranks #3 of 11 aluminium smelters tracked in Canada. It emits about 1,020,066 tonnes of CO₂e per year (Climate TRACE) — roughly the tailpipe emissions of 237,778 cars.

480,000t of alumina/aluminum
1,020,066t CO₂e / yr (Climate TRACE)
#21CO₂ rank in Canada
2.13t CO₂ per capacity unit

Facility data: Climate TRACE v6 (asset-level capacity & CO₂e, CC BY 4.0), id ct-3672966.

Bağlamda: bu tesis nasıl karşılaştırılır

480,000 t of alumina/aluminum'de, Alma aluminium plant Canada'daki aluminium smelter'lerin medyanı çok üstünde 314,000 t of alumina/aluminum'dir. Alt sektör: aluminum. aluminium smelter olarak, temel endüstriyel işlemleri için yoğun proses ısısı (tipik olarak 600–900°C) gerektirir — kazanlar, fırınlar veya doğrudan yanma ile sağlanması gereken ısı, ve izolasyon yapılmamış kaplar ve boruların kayıpları harcanan yakıtı temsil eder. Modüler çıkarılabilir yalıtım bu kayıpları %80–96 oranında azaltabilir, yüzeyleri ≤45°C'ye soğutabilir, geri ödeme süresi genellikle 2 yıldan azdır. Alüminyum eritmeleri, alüminayı 900°C'nin üstündeki eritilmiş alüminyuma rafine etmek için büyük elektrik akımları kullanır ve sıcak metal pota ve dökme ekipmanı aracılığıyla akmalıdır.

Kapasite ve CO₂ yoğunluğu karşılaştırması Climate TRACE endüstriyel tesis verilerinden hesaplanmıştır; sektör rolü mühendislik referansına dayanmaktadır.

What 1,020,066 t CO₂e a year looks like

This facility's reported annual CO₂e in the everyday equivalents from the US EPA Greenhouse Gas Equivalencies calculator:

237,778cars driven for a year
133,029homes' annual energy use
17,001,100tree seedlings grown 10 years

Equivalencies: US EPA Greenhouse Gas Equivalencies. Emissions: Climate TRACE.

Capacity vs largest aluminium smelters in Canada

Sept-Îles aluminium plant: 630,000 t of alumina/aluminum630kSept-Îles …La Haute-Gaspésie Regional County Municipality: 500,378 t of alumina/aluminum500kLa Haute-G…Alma aluminium plant: 480,000 t of alumina/aluminum480kAlma alumi…Kitimat aluminium plant: 435,000 t of alumina/aluminum435kKitimat al…Bécancour aluminium plant: 413,000 t of alumina/aluminum413kBécancour …Baie Comeau aluminium plant: 314,000 t of alumina/aluminum314kBaie Comea…Deschambault aluminium plant: 290,000 t of alumina/aluminum290kDeschambau…Laterrière aluminium plant: 260,000 t of alumina/aluminum260kLaterrière…

Reported capacity (t of alumina/aluminum), Climate TRACE v6 (asset-level capacity & CO₂e, CC BY 4.0).

Operator

Operated by Rio Tinto Ltd. All facilities by this operator →

Local climate

Alma aluminium plant sits in a warm-summer humid continental climate zone (Köppen Dfb), at 48.5°N in the northern hemisphere.

~6°Ctypical annual mean
~19°Ctypical warm-season
Warm-summer humid continental: four distinct seasons — cold winters and warm summers

Köppen zone: Köppen-Geiger world climate classification (Kottek et al. 2006, 0.5° grid).

How it compares & nearby sites

The #3 largest of 11 aluminium smelters in Canada by reported capacity.

Nearby industrial sites

Location

Coordinates 48.54889, -71.65146. View on OpenStreetMap.

Heat loss & insulation profile

A aluminium smelter like this runs hot equipment that sheds heat continuously: alumina calciner, casthouse furnaces, hot ducting (electrolysis itself is electric) (surface/process temperatures around 150–1,000 °C). These surfaces lose energy to the air year-round; removable modular insulation cuts that loss, brings outer surfaces to ≤45 °C, and unclips for inspection.

electrolysis is mostly electricity (Scope 2) + anode process; on-site combustion small - insulation mainly relevant to alumina refining/casthouse.

Indicative recoverable energy

On an already-insulated site (pipes & valves in cladding / jackets), closing the remaining gaps, flanges and damaged sections and switching to removable covers indicatively recovers about 2,500 MWh/yr (≈ 500 t CO₂/yr) — scaled to this site's reported CO₂ within its sector. Bare or damaged surfaces recover several times more.

See Inzonex insulation → Estimate your site →

Indicative, not a measurement. Conservative floor for an already-insulated plant; a TIPCHECK on-site audit gives a measured figure. Industry context: EiiF TIPCHECK — industrial insulation can save ~14 Mtoe/yr in EU, payback typically <2 years.

Safety & the no-regret first step

Bare hot surfaces here exceed the touch-safe limit (EN ISO 13732-1); insulation to ≤45 °C is a worker-safety and compliance win. And before electrification, fuel-switching or CCS, eliminating surface heat loss is the cheapest, fastest, lowest-risk step — audit the bare spots first, rip-and-replace later.

External climate finance your country can access

Domestic energy-efficiency grants are limited here; industrial decarbonisation is mainly funded externally:

Routed via national development banks / accredited entities — not a direct factory grant. Verified 2026.

Frequently asked questions

What type of facility is Alma aluminium plant?

Alma aluminium plant is a aluminium smelter in Canada. It smelts alumina into primary aluminium by high-current electrolysis.

What is the capacity of Alma aluminium plant?

Alma aluminium plant has a reported capacity of 480,000 t of alumina/aluminum.

How much CO₂ does Alma aluminium plant emit?

Alma aluminium plant emits about 1,020,066 tonnes of CO₂e per year (Climate TRACE) — roughly the tailpipe emissions of 237,778 cars. That ranks #21 among tracked facilities in Canada.

Where is Alma aluminium plant located?

Alma aluminium plant is in Canada, near coordinates 48.54889, -71.65146.

Who operates Alma aluminium plant?

Alma aluminium plant is operated by Rio Tinto Ltd.

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