Back to results
US 4,566,877 AGranted
Carbon foam usable as blast-furnace fuel and method of making same
AssigneeInstitut de Recherches de la Siderurgie Francaise
InventorsRichard Pazdej, Albert Pavinato
Life of this patent
Estimating the term…
Abstract
A process for conditioning carbon rich material in the form of finely divided solid particles includes the steps of mixing at least 70% of the finely divided solid particles with an aqueous solution, mixing in approximately 0.1 to 5% of a surface active additive with foaming properties, homogenizing and aerating the resultant to produce a carbon foam.
Claims13
A mixture comprising:
- at least 70% by weight of a solid carbon-rich material;
- between 0.07% and 3.5% by weight of a foaming surfactant;
- and
- balance gaseous bubbles and aqueous liquid capable of suspending the carbon-rich material.
1 more element
A method of preparing a mixture containing finely divided solid carbon-rich particulates, the method comprising the steps of:
- mixing together
- at least 70% by weight of a solid carbon-rich material,
- between 0.07% and 3.5% by weight of a foaming surfactant, and
- balance mainly an aqueous liquid capable of suspending the carbon-rich material;
- homogenizing the mixture;
- and
- aerating the mixture to form therein stable gaseous bubbles.
4 more elements
The use as blast-furnace fuel of a mixture comprising:
- at least 70% by weight of a solid carbon-rich material;
- between 0.07% and 3.5% by weight of a foaming surfactant;
- and
- balance gaseous bubbles and aqueous liquid capable of suspending the carbon-rich material.
1 more element
Dependencies are inferred from the claim text.