Use of hydrophobically associating copolymers as binders for pelletizing metal containing ores
AssigneeBASF SE
InventorsAdrian Mauricio VILLANUEVA BERINDOAGUE, Alexej MICHAILOVSKI, Gregor BRODT, Sylvia VON KROG, Dominic Rene BECHEN, Rainer PACKE-WIRTH, Shane HOFF
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Abstract
The present invention relates to the use of hydrophobically associative copolymers as binders for pelletizing metal containing ores such as iron containing ores. The copolymers comprise monomer unitsderived from at least one hydrophobically as sociative monomer, preferably at least one unsaturated hydrophobically associating monomer.
Claims20
A process, comprising pelletizing a metal containing ore in contact with Use of a hydrophobically associating copolymer.
A composition for metal containing ore pelletizing,. the composition comprising:
- (i) a hydrophobically associating copolymer;
- and
- (ii) a pelletisation aid, a water soluble treatment polymer, or both,
- wherein:
- the pelletizing aid is a water soluble material selected from the group consisting of sodium carbonate, sodium bicarbonate, sodium silicate, sodium phosphate, sodium stearate, sodium benzoate, sodium tartrate, sodium oxalate, sodium citrate, sodium acetate, the corresponding ammonium, potassium, calcium and magnesium salts of the preceding sodium salts, urea and calcium oxide;
- and
- the water soluble treatment polymer has molecular weight of from about 1,000 to about 20,000 and is a synthetic polymer formed by polymerisation of water soluble ethylenically unsaturated anionic monomer or water soluble ethylenically unsaturated monomer blend containing at least 50% by weight anionic monomer.
Dependencies are inferred from the claim text.