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Increased solubility of calcium sulphate in sea water containing hydrochloric acid

โœ Scribed by Oliver Flint

Book ID
104112886
Publisher
Elsevier Science
Year
1968
Tongue
English
Weight
515 KB
Volume
4
Category
Article
ISSN
0011-9164

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โœฆ Synopsis

Data are presented which indicate that uptake of calcium sulphate by sea Water brines can be increased from about 0.8% to 3 or 6",/, by aiuminium chloride or hydrochloric acid additions resp-G&y. The advantage of such ittmaxd sotubility in postponement of calcium sulphatc scaling and of descaling of sea water e-apotltion ptants etc. is ckarly indicated. A possible relationship between cqstaf structure and solubility is discussed and 'closed Ioop' dcscaling u-zth the addition of hydrochloric acid is suggested as an alternative to mechanicA chipping for rerno~l of calcium sulphare deposits.

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actunlly flowiug through them ; this will lctrd to precipitntion of tllc bulk of the cnlciuni sulphnte present in supersnturnted solution. It liirs been observed thnt settled ningnesiir slurry, originrilly free from crystals of cnlciiuui sulphnte, heconies henvily contnminnted on standing in a settl