FILLING SAND FOR APPARATUS FOR SLIDABLY OPENING AND CLOSING LADLES

Title:

FILLING SAND FOR APPARATUS FOR SLIDABLY OPENING AND CLOSING LADLES

Document Type and Number:

WIPO Patent Application WO/1998/052708

Kind Code:

A1

Abstract:

Filling sand for an apparatus for slidably opening and closing ladles, obtained by preparing a mixture of 70-90 wt.% of chromite sand and 10-30 wt.% of silica sand, and compounding 0.05-5 wt.%, with respect to a total weight of the mixture, of carbon black into the mixture; or preparing a mixture of 70-90 wt.% of chromite sand and 10-30 wt.% of silica sand so that the mixture contains grains of chromite sand of 150-850 $g(m)m in size accounting for not less than 99 %, grains of chromite sand of 200-600 $g(m)m in size accounting for not less than 95 %, grains of silica sand of 150-850 $g(m)m in size accounting for not less than 95 % and grains of silica sand of 200-600 $g(m)m in size accounting for not less than 80 %.

Inventors:

TAKASUGI HIDETO (JP)
TANO MANABU (JP)
ISHII TAKESHI (JP)
AKAI SHINICHI (JP)
SHIRAYAMA AKIRA (JP)
NAKASHIMA HIROHISA (JP)

Application Number:

PCT/JP1998/002240

Publication Date:

November 26, 1998

Filing Date:

May 21, 1998

Export Citation:

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Assignee:

NIPPON KOKAN KK (JP)
TAKASUGI HIDETO (JP)
TANO MANABU (JP)
ISHII TAKESHI (JP)
AKAI SHINICHI (JP)
SHIRAYAMA AKIRA (JP)
NAKASHIMA HIROHISA (JP)

International Classes:

B22D41/46; (IPC1-7): B22D41/46; B22D11/10

Foreign References:

JPH0947863A	1997-02-18
JPH07308763A	1995-11-28
JPH058022A	1993-01-19

Other References: