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US 11,846,005 B2Granted
Binder compositions and processes of preparing iron ore pellets
AssigneeKemira Oyj
InventorsYuping Luo, Lucas Moore, Patrick Macy
Life of this patent
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Abstract
Binder compositions for agglomerating iron ore fines are provided, the compositions comprising: one or more types of modified starch and one or more types of synthetic dry polymers. A process for preparing iron ore pellets with the binder compositions is also provided, the process comprising: (i) adding a binder composition to particulate iron ore to form a mixture; and (ii) forming the mixture into pellets.
Claims10
A binder composition for agglomerating iron ore fines comprising:
- one or more modified starches and one or more synthetic dry polymers wherein,
- (a) said one or more synthetic dry polymers has a net anionic charge of from 5 to 40 mole % charge;
- (b) said one or more modified starches is in a form of particles having a median size of 75 to 250 microns and said one or more synthetic dry polymers is in a form of particles having a median size of 75 to 800 microns;
- and
- (c) the one or more synthetic dry polymers has an average specific viscosity ranging from 2.5 to 6.5 cPs;
- (d) wherein said one or more synthetic dry polymers comprise a copolymer which consist of acrylamide and acrylic acid monomers.
3 more elements
Dependencies are inferred from the claim text.