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Acid process

   Also found in: Encyclopedia 0.01 sec.
Ac´id proc´ess
1.(Iron Metal.) That variety of either the Bessemer or the open-hearth process in which the converter or hearth is lined with acid, that is, highly siliceous, material. Opposed to basic process.


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In 1856, Henry Bessemer patents a bottom-blown acid process for melting low-carbon iron.
By acquiring DSM, SABIC gained one key technology - Stamicarbon - to add to three processes it has developed: the Acetic Acid process created at its R&T unit; Alpha-Sablin, developed jointly with Linde of Germany; and a new venyl acetate monomer process used at its semi-commercial acetic acid plant at Yanbu' on stream in 2004.
For silicon nitride removal, the industry has traditionally used a hazardous, 160 degrees Celsius to 180 degrees Celsius hot-phosphoric acid process in a wet bench.
 
 
 
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