Abstract
In this work we study the possibility of utilizing steel converter slag,
a byproduct of steel manufacturing, for production of pure calcium
carbonate. The dissolution of calcium from steel converter slag by using
acetic acid as a solvent and the precipitation of pure calcium
carbonate from the resulting solution were experimentally investigated.
It was found that, while strong solutions of acetic acid dissolve most
of the calcium from the slag, weak acetic acid solutions dissolve
calcium selectively. Precipitation of any substantial amount of calcium
carbonate was found to require the addition of sodium hydroxide. Calcium
conversion from the solution into the precipitate was as high as 86%,
and the purity of the precipitate was over 99%. The calcium carbonate
particles produced at low temperatures were found to have rhombohedral
particle shapes, a very high brightness (98.7%), and a small particle
size (mean value of 0.6 μm).
Original language | English |
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Pages (from-to) | 7104-7111 |
Number of pages | 8 |
Journal | Industrial & Engineering Chemistry Research |
Volume | 47 |
Issue number | 18 |
DOIs | |
Publication status | Published - 2008 |
MoE publication type | A1 Journal article-refereed |