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US 8,999,032 B2Granted
Application of carbon nanotubes on agglomerates of ore fines to increase the mechanical strength thereof
AssigneeVale S.A.
InventorsFlavio de Castro Dutra, Hamilton Porto Pimenta, Valdirene Gonzaga De Resende, Aloísio Antônio de Melo Borges
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Abstract
An application of carbon nanotubes on agglomerates of ore fines to increase the mechanical strength is provided. A process for the preparation of ore agglomerates having enhanced mechanical strength by the application of the carbon nanotubes is also provided.
Claims12
An agglomerate product comprising:
- iron, nickel or manganese ore fines, or a mixture thereof;
- and
- a binding agent comprising sodium silicate and carbon nanotubes;
- wherein the agglomerate product has a mechanical strength higher than a corresponding agglomerate product without carbon nanotubes.
1 more element
A method of applying carbon nanotubes on agglomerates of ore fines to increase the mechanical strength, comprising:
- dispersing carbon nanotubes into a matrix by mechanical mixing or by ultrasonic processing;
- performing a mechanical mixture with the ore fines;
- and
- agglomerating the mixture.
1 more element
A process for the preparation of ore agglomerates having high mechanical strength, comprising:
- dispersing carbon nanotubes into a matrix to form a mixture;
- preparing the mixture;
- pelletizing or briquetting or extruding the mixture to form pellets or briquettes;
- screening the formed pellets or briquettes;
- drying the pellets or briquettes;
- and
- screening the pellets or briquettes.
4 more elements
Dependencies are inferred from the claim text.