Compressed air is used in most industrial facilities, including the aluminum production industry where oil-free compressed air helps transport raw aluminum powder. In these facilities, oil-free air is essential because any level of oil contamination can cause quality defects and pipe clogging, in addition to posing a fire hazard.
Established in 2005, Henan Wanji Aluminum Co., Ltd. (Wanji Aluminum) is one of China’s largest aluminum smelters that relies on oil-free air in its production lines. With a facility that has two electrolytic aluminum production lines and a capacity of 650,000 tons per year, Wanji Aluminum requires both high-quality oil-free air and high levels of energy efficiency.
To meet both requirements, Wanji Aluminum uses 10 Atlas Copco ZH series oil-free centrifugal compressors in conveying alumina to the silo and from the silo into the pot lines, carbon anode production, air instrumentation and pneumatic conveying of recycled particulate. Here’s why:
ZH compressors are designed for reliability and energy efficiency in the most demanding environments, such as smelting plants.
The milled impellers are made from stainless steel and spin tested to ensure zero defects.
For trouble-free performance and long operating lives, the ZH series utilizes variable geometry flexible pad bearings, carbon ring air seals, labyrinth oil seal, AGMA Class A4 gears and stainless steel coolers.
The horizontal steel gear box makes is easily accessible for inspection and preventative maintenance.
The oil-free turbo core unit provides the optimum combination of high flow with low energy consumption.
The high compressor package efficiency includes ample-sized cooling, low pressure drops and an efficient drive drain.
Wanji Aluminum is able to provide 100 percent pure, clean, oil-free air for its operations thanks to the reliable and highly efficient ZH compressors. For more information on these compressors can benefit your applications, please contact an Atlas Copco expert.