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酸化アルミニウム

The extraction of alumina involves energy-intensive processes, such as digestion, evaporation and liquor heating. The challenge? How best to recover and reuse process waste heat to reduce costs and raise yields. To succeed, aluminum manufacturers require process know-how as well as highly reliable equipment and smart services that optimize performance, ensure uptime and increase profitability.

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Reducing alumina production costs

Alumina refineries face constant challenges – from ongoing energy challenges and limited bauxite supply to compliance with environmental regulations. At the same time, costs must be cut and yields improved.

Digestion, evaporation, liquor heating and other energy-intensive processes generate vast amounts of heat. Smart reuse can deliver significant energy savings and higher yields.

Extremely thermally efficient and highly corrosion-resistant, Alfa Laval compact plate heat exchangers handle aggressive media and harsh operating environments with ease.

Our gasketed plate heat exchangers can be used in tandem as a liquor exchanger, capturing the heat from the pregnant liquor for use to pre-heat the spent liquor before evaporation.

Alfa Laval gasketed plate heat exchangers use flash steam from the evaporation of spent liquor to pre-heat the same liquor before feeding it back into the evaporators. This significantly reduces energy consumption while maximizing uptime and minimizing maintenance.

With space-saving, easy-to-install and energy-efficient designs, all Alfa Laval heat exchangers achieve high turbulence, thereby reducing the risk of fouling during operation. This makes high-pressure cleaning and chemical cleaning highly effective while reducing downtime.

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