To provide sand for the sliding nozzle of a ladle, which is a mixture of chromite sand and silica sand and enables a high natural porosity rate to be obtained in a high-temperature long-time operation accompanying a secondary refining process even if the chromite sand content is lower.
The invented sand for the sliding nozzle of the ladle comprises 10-50 mass% silica sand and 50-90 mass% chromite sand. The silica sand contains 95 mass% or more of particles with a diameter of 0.425 mm or larger and smaller than 1.18 mm. The chromite sand contains 95 mass% or more of particles with a diameter of 0.075 mm or larger and smaller than 0.85 mm, 10 mass% or more of particles with a diameter of 0.106 mm or larger and smaller than 0.212 mm, and 30 mass% or more of particles with a diameter of 0.3 mm or larger and smaller than 0.6 mm.
TANAKA HIROSHI
FUJITA HIROKI
OKAMOTO YUKIO
OHASHI AKIRA
KAWAKAMI MANABU
TAKASUGI HIDETO
YAMAKAWA SANGYO KK
NIPPON ROTARY NOZZLE CO LTD
| JPS62244570A | 1987-10-24 | |||
| JPH11277220A | 1999-10-12 | |||
| JPH0671423A | 1994-03-15 |
| WO1998052708A1 | 1998-11-26 | |||
| WO2000073000A1 | 2000-12-07 |
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