Process for inhibiting particulate emission during friction...

C - Chemistry – Metallurgy – 22 – B

Patent

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C22B 1/14 (2006.01) C22B 1/244 (2006.01)

Patent

CA 2759271

Description of a process for the inhibition of particulate emission during friction of heat-treated iron ore pellets comprising the following steps: a) removal of heat-treated iron ore pellets at a temperature of 200°C; and b) spraying of an alcohol by-product on pellets. The use of an alcohol by-product as an inhibitor of particulate emission is further described, with the alcohol by-product being sprayed on heat-treated iron ore pellets, which can partially or completely replace water during the handling, stacking, loading, and unloading of materials such as pellets, granules, fines, and other products from iron ore and other minerals. This process significantly reduces the emission of particulates in the company's operational area.

L'invention porte sur un procédé pour l'inhibition de l'émission de matière particulaire pendant le frottement des boulettes de minerai de fer traité thermiquement comprenant les étapes suivantes : a) le retrait de boulettes de minerai de fer traité thermiquement à une température de 200 °C et b) la pulvérisation d'un sous-produit alcoolique sur les boulettes. L'invention porte en outre sur l'utilisation d'un sous-produit alcoolique comme inhibiteur d'émission de matière particulaire, le sous-produit alcoolique étant pulvérisé sur des boulettes de minerai de fer traité thermiquement, lequel peut remplacer en partie ou en totalité l'eau pendant la manipulation, l'empilement, le chargement et le déchargement de matières telles que des boulettes, des granulés, des fines et d'autres produits provenant de minerai de fer et d'autres matières minérales. Ce procédé réduit considérablement l'émission de matières particulaires dans la zone opérationnelle de la société.

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