Backfill for magnesium anodes

Chemistry: electrical and wave energy – Processes and products – Electrostatic field or electrical discharge

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Details

204197, 501141, 501142, 501143, 501144, 501151, 501154, C23F 1300

Patent

active

046234357

ABSTRACT:
A backfill composition for use with sacrificial magnesium anodes used in the cathodic protection of ferrous metal structures comprises an anion-releasing material capable of releasing fluoride, phosphate or zincate ions in water-soluble form and a magnesium-transporting adjuvant capable of transporting magnesium ion by ion exchange conduction. Suitable anion-releasing materials include calcium fluoride, cryolite, magnesium silicate and sodium silicofluoride, while suitable magnesium transporting adjuvants include bentonite clay, calcium sulfate, calcium carbonate, calcium hydroxide and magnesium silicate.

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