Salt production History of salt

1 salt production

1.1 solar evaporation of seawater
1.2 open pan production brine
1.3 closed pan production under vacuum
1.4 salt mines

salt production

a zouthuisje , i.e. little salt-house, used salt making today. many of these structures can found near twekkelo in twente

on industrial scale, salt produced in 1 of 2 principal ways: evaporation of salt water (brine) or mining. evaporation can either solar evaporation or using heating device.

solar evaporation of seawater

in correct climate (one ratio of evaporation rainfall suitably high) possible use solar evaporation of sea water produce salt. brine evaporated in linked set of ponds until solution sufficiently concentrated final pond salt crystallizes on pond s floor.

open pan production brine

one of traditional methods of salt production in more temperate climates using open pans. in open-pan production, salt brine heated in large, shallow open pans. earliest examples of date prehistoric times , pans made of either type of ceramic called briquetage, or lead. later examples made iron. change coincided change wood coal purpose of heating brine. brine pumped pans , concentrated heat of fire burning underneath. crystals of salt formed, these raked out , more brine added.

closed pan production under vacuum

the open pan salt works has been replaced closed pan system brine solution evaporated under partial vacuum.

salt mines

in second half of 19th century, industrial mining , new drilling techniques made discovery of more , deeper deposits possible, increasing mine salt s share of market. although mining salt more expensive extracting brine via solar evaporation of seawater, introduction of new source reduced price of salt due reduction of monopolization. extraction of salt brine still heavily used, example, vacuum salt produced british salt in middlewich has 57% of uk market

salt used in cooking.