Aluminium Smelter in China. Approximate location 34.62629, 113.47149.
Aluminium SmelterChinaCO₂ reported
Zhengzhou Prefecture City is an aluminium smelter in China with a reported capacity of 8,897,160 t of alumina/aluminum. It smelts alumina into primary aluminium by high-current electrolysis. By capacity it ranks #2 of 141 aluminium smelters tracked in China. It emits about 12,071,667 tonnes of CO₂e per year (Climate TRACE) — roughly the tailpipe emissions of 2,813,908 cars. Its CO₂ per unit of capacity is about 35% below the median aluminium smelter.
Facility data: Climate TRACE v6 (asset-level capacity & CO₂e, CC BY 4.0), id ct-48193105.
8,897,160 t of alumina/aluminum'de, Zhengzhou Prefecture City China'daki aluminium smelter'lerin medyanı çok üstünde 372,000 t of alumina/aluminum'dir. Kapasite başına CO₂'si aluminium smelter'nin medyanı altında kabaca 26%'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.
This facility's reported annual CO₂e in the everyday equivalents from the US EPA Greenhouse Gas Equivalencies calculator:
Equivalencies: US EPA Greenhouse Gas Equivalencies. Emissions: Climate TRACE.
Reported capacity (t of alumina/aluminum), Climate TRACE v6 (asset-level capacity & CO₂e, CC BY 4.0).
Zhengzhou Prefecture City sits in a humid subtropical (dry winter) climate zone (Köppen Cwa), at 34.6°N in the northern hemisphere.
Köppen zone: Köppen-Geiger world climate classification (Kottek et al. 2006, 0.5° grid).
The #2 largest of 141 aluminium smelters in China by reported capacity.
Coordinates 34.62629, 113.47149. View on OpenStreetMap.
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.
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 4,200 MWh/yr (≈ 840 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.
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.
Domestic energy-efficiency grants are limited here; industrial decarbonisation is mainly funded externally:
CBAM. Exporters of cement, steel, aluminium, fertiliser, hydrogen and electricity to the EU face the Carbon Border Adjustment Mechanism — cutting embedded emissions (efficiency + insulation) lowers the levy.
Routed via national development banks / accredited entities — not a direct factory grant. Verified 2026.
Zhengzhou Prefecture City is a aluminium smelter in China. It smelts alumina into primary aluminium by high-current electrolysis.
Zhengzhou Prefecture City has a reported capacity of 8,897,160 t of alumina/aluminum.
Zhengzhou Prefecture City emits about 12,071,667 tonnes of CO₂e per year (Climate TRACE) — roughly the tailpipe emissions of 2,813,908 cars. That ranks #26 among tracked facilities in China.
Zhengzhou Prefecture City is in China, near coordinates 34.62629, 113.47149.
