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Potash - Deposits, Processing, Properties and Uses (Hardcover, 1996 ed.)
Loot Price: R15,396
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Potash - Deposits, Processing, Properties and Uses (Hardcover, 1996 ed.)
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Potash is the term generally given to potassium chloride, but it is
also loosely applied to the various potassium compounds used in
agriculture: po tassium sulfate, potassium nitrate or double salts
of potassium and magne sium sulfate (generally langbeinite, K S0 *
2MgS0 ). Sometimes the var 2 4 4 ious compounds are differentiated
by the terms muriate of potash, sulfate of potash, etc. When
referring to ores, or in geology, all of the naturally found
potassium salts are called "potash ores". However, originally
potash referred only to crude potassium carbonate, since its sole
source was the leaching of wood ashes in large pots. This "pot ash"
product was generally recovered from near-seacoast plants, such as
the saltwort bush, whose ashes were richer in potassium than sodium
carbonate. Inland plant's ashes were generally higher in sodium
carbonate, giving rise to the word alkali from the Arabic word for
soda ash, al kali. The term was then carried over after potassium
was discovered to form the latin word for it, kalium. The recovery
of potash from ashes became a thriving small cottage industry
throughout the world's coastal areas, and developing economies,
such as the early set tlers in the United States were able to
generate some much-needed income from its recovery and sale. This
industry rapidly phased out with the advent of the LeBanc process
for producing soda ash in 1792, and the discovery about the same
time of the massive sodium-potassium nitrate deposits in the
Atacama Desert of Chile.
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