Книга: Open Pan Salt Making: Brine, Briquetage, Lead, Middle Ages, Alberger process, Grainer evaporation Process, Salt in Cheshire, History of Salt in Middlewich, Lion Salt Works

High Quality Content by WIKIPEDIA articles! In Europe virtually all domestic salt is obtained by solution mining of underground salt formations although some is still obtained by the solar evaporation of sea water. Salt is extracted from the Brine using vacuum pans, where brine is heated in a partial vacuum in order to lower the boiling point. In the past salt has been extracted by heating the brine in pans operating at normal atmospheric pressure, known as open pans.