Production method for low-sulfur iron ore
AssigneeKabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
InventorsEishi KUSAKA, Katsuyuki IIJIMA, Takayasu FUJIURA
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Abstract
A process for producing an iron ore having a sulfur content reduced to 0.08% or less, which includes a step of subjecting an iron ore containing sulfur in an amount of more than 0.08% and 2% or less to a flotation. The flotation satisfies any one of the following (1) to (3): (1) a xanthate-based compound and a salt of an amine compound are used as collectors, (2) a xanthate-based compound is used as a collector and a substance which releases a sulfur ion in water is used as an activator, or (3) a xanthate-based compound and a salt of an amine compound are used as collectors and a substance which releases a sulfur ion in water is used as an activator.
Claims8
A process for producing an iron ore having a sulfur content reduced to 0.08% or less, comprising subjecting an iron ore containing sulfur in an amount of more than 0.08% and 2% or less to a flotation, wherein during the flotation,
- (1) a xanthate-based compound and a salt of an amine compound are used as collectors,
- (2) a xanthate-based compound is used as a collector and a substance which releases a sulfur ion in water is used as an activator, or
- (3) a xanthate-based compound and a salt of an amine compound are used as collectors and a substance which releases a sulfur ion in water is used as an activator.
Dependencies are inferred from the claim text.