C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
C22B 1/24 (2006.01) C22B 1/243 (2006.01) C22B 1/245 (2006.01) C22B 7/02 (2006.01)
Patent
CA 2635025
A process for producing metal ore pellets from a particulate carbon-based material, a metal ore material, and a silicate-based binder which includes one or more surfactants, comprising the steps of : admixing the materials and binder, and agglomerating the so-formed mixture by tumbling to form the pellets at ambient temperature. The tumbling action, such as in a rotary drum, serves to agglomerate the particles and bind the mixture into the pellets. No mechanical compression force is required. The process provides a simple but efficient process for using waste carbon-based materials and waste metal ore materials, and forming a useable product, which is ready for smelting. Rotating drum or pan agglomerators are relatively low cost to build, and are capable of very high tonnage throughputs.
L~invention concerne un procédé de fabrication de pastilles de minerai métallique à partir d~un matériau particulaire à base de carbone, d~un matériau de minerai métallique et d~un liant à base de silicate comprenant un ou plusieurs tensioactifs, ledit procédé comprenant les étapes suivantes : mélanger les matériaux et le liant et agglomérer le mélange ainsi formé par tonnelage afin de former les pastilles à température ambiante. L~action de tonnelage, telle que dans un tambour rotatif, permet d~agglomérer les particules et de lier le mélange pour former des pastilles. Aucune force de compression mécanique n~est nécessaire. Le procédé constitue un procédé simple mais efficace d~utilisation de matériaux usagés à base de carbone et de matériaux usagés à base de minerai métallique, et permet de former un produit utilisable, prêt à la fusion. Les tambours rotatifs et les agglomérateurs ont un coût de fabrication relativement faible et sont capables de rendements de tonnages très élevés.
Gilbert John Kenneth
Webster John Samuel
Fasken Martineau Dumoulin Llp
Solsys Limited
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