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Boric oxide in seawater derived magnesia (CROSBI ID 104615)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Martinac, Vanja ; Labor, Miroslav ; Petric, Nedjeljka Boric oxide in seawater derived magnesia // Indian journal of marine sciences, 33 (2004), 3; 226-230-x

Podaci o odgovornosti

Martinac, Vanja ; Labor, Miroslav ; Petric, Nedjeljka

engleski

Boric oxide in seawater derived magnesia

The study has examined the possibility of application of the combined rinsing method used to rinse the precipitate of magnesium hydroxide obtained from seawater by substoichiometric precipitation with the addition of 80 percentage of the stoichiometric quantity of the dolomite lime as the precipitation agent. The rinsing agent was distilled water with pH=6.25 and alkalised distilled water with pH=12.50. The product quality was established by determining the concentrations of MgO, CaO and B_2O_3 in the calcined magnesium oxide. The purpose of the study was to determine the operating conditions that might be used for production of good quality caustic magnesia from seawater, i.e. caustic MgO with a low B_2O_3 and CaO content. It has been noted that the contents of B_2O_3 and CaO in caustic magnesia from seawater are significantly reduced by this rinsing method, which is of considerable importance as the substoichiometric precipitation is much more economical than the overstoichiometric one in the so-called "wet phase".

substoichiometric precipitation; rinsing method; boric oxide; seawater; magnesia

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Podaci o izdanju

33 (3)

2004.

226-230-x

objavljeno

0379-5136

Povezanost rada

Kemijsko inženjerstvo

Indeksiranost