Dry granulation of metallurgical slag
AssigneePaul Wurth S.A.
InventorsMarc Solvi, Bob Greiveldinger, Claudine Friederici, Daniel Michels, Mathias Hoffmann, Horst Kappes
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Abstract
A process for dry granulation of hot liquid slag wherein the hot liquid slag is mixed with solid metallic particles so as to form a solidified, vitrified slag cake mixed with the metallic particles, the slag cake is crushed so as to form hot slag particles and heated solid particles, said particles are cooled and said solid metallic particles are recycled.
Claims20
A process for dry granulation of hot liquid slag wherein the hot liquid slag is mixed with solid metallic particles so as to form a solidified, vitrified slag cake mixed with said metallic particles, said slag cake is crushed so as to form hot slag particles and heated solid particles, said particles are cooled and said solid metallic particles are recycled.
A process for dry granulation of hot liquid slag, comprising:
- collecting hot liquid slag in a plurality of receptacles;
- mixing solid metallic particles throughout said hot liquid slag in said receptacles;
- cooling said hot liquid slag in the receptacles using said solid metallic particles to form a plurality of solidified, vitrified slag cakes having said metallic particles distributed throughout said slag cakes;
- crushing said slag cakes to form hot slag particles and heated solid particles;
- transferring said hot slag particles and said heated solid particles to a plurality of heat exchangers;
- and
- sequentially extracting heat from said hot slag particles and said solid metallic particles in said heat exchangers.
Dependencies are inferred from the claim text.