Kobe Steel, Ltd.

Air Products and Chemicals, Inc.

Dainippon Screen Mfg. Co., Ltd.

Kabushiki Kaisha Kobe Seiko Sho

Katsuyuki Iijima

Kaoru Masuda

Yoichi Inoue

Tetsuo Suzuki

Tetsuya Yoshikawa

Kimitsugu Saito

Yusuke Muraoka

Katsumi Watanabe

Tomomi Iwata

Takayasu Fujiura

Ikuo Mizobata

Eishi Kusaka

Darry W Peters

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.

Production method for low-sulfur iron ore

A remover contains an alkaline component, a bivalent zinc ion, a ferric ion, a chelating agent, and a nitrate ion. By using this remover, an anodized film can be selectively removed from an aluminum or aluminum-alloy member.

Methods and removers for removing anodized films

Disclosed is a high pressure processing method for subjecting a processing object to a high pressure processing using a high pressure fluid. In this method, the high pressure fluid is brought into collision with the surface of the processing object placed in a high pressure processing chamber, and then distributed along the surface of the processing object in an outward direction beyond the processing object.

High pressure processing method and apparatus

A process for removing residues from the microstructure of an object is provided, which comprises steps of preparing a remover including carbon dioxide, an additive for removing the residues and a co-solvent dissolving the additive in said carbon dioxide at a pressurized fluid condition; and bringing the object into contact with the remover so as to remove the residues from the object. A composition for removing residues from the microstructure of an object is also provided.

Process and composition for removing residues from the microstructure of an object

In a high pressure processing method for removing an unnecessary substrate on the surface of the surface of a workpiece by bringing it into contact with supercritical carbon dioxide and additives in a high-pressure chamber, removing the unnecessary substance on the workpiece, first rinsing and second rinsing are performed under a substantially same pressure with continuous flowing of supercritical carbon dioxide.

Method of high pressure treatment

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Kobe, Japan

Katsuyuki Iijima