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1. WO2022075174 - FILLER SAND

Publication Number WO/2022/075174
Publication Date 14.04.2022
International Application No. PCT/JP2021/036116
International Filing Date 30.09.2021
IPC
B22D 41/22 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
41Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
14Closures
22sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
B22D 41/46 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
41Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
14Closures
44Consumable closure means, i.e. closure means being used only once
46Refractory plugging masses
CPC
B22D 41/22
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
41Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
14Closures
22sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
B22D 41/46
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
41Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
14Closures
44Consumable closure means, i.e. closure means being used only once
46Refractory plugging masses
Applicants
  • キンセイマテック株式会社 KINSEI MATEC CO., LTD. [JP]/[JP]
Inventors
  • 末本 智紀 SUEMOTO Tomoki
  • 小▲柳▼ 清一 KOYANAGI Seiichi
  • 井筒 一希 IZUTSU Kazuki
Agents
  • 鈴江 正二 SUZUE Shoji
Priority Data
2020-16923106.10.2020JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) FILLER SAND
(FR) SABLE DE CHARGE
(JA) 充填砂
Abstract
(EN) Provided is filler sand with which it is possible to increase a sintering initiation temperature, and to inhibit the penetration of molten steel. The filler sand contains chromite. The filler sand contains secondary particles 10. The secondary particles 10 contain a plurality of primary particles 12. The particle sizes of the plurality of primary particles 12 are greater than 0 micrometers and at most 50 micrometers. At least some of the plurality of primary particles 12 contained in the secondary particles 10 contain chromite. Preferably, the abovementioned primary particles 12 contain at least 20 wt% and less than 50 wt% Cr2O3, and at least 10 wt% and less than 30 wt% FeO.
(FR) La présente invention concerne un sable de charge avec lequel il est possible d’augmenter une température de démarrage de frittage, et d’inhiber la pénétration d’acier fondu. Le sable de charge contient de la chromite. Le sable de charge contient des particules secondaires 10. Les particules secondaires 10 contiennent une pluralité de particules primaires 12. Les tailles de particules de la pluralité de particules primaires 12 sont supérieures à 0 micromètre et d’au plus 50 micromètres. Au moins une partie de la pluralité de particules primaires 12 contenues dans les particules secondaires 10 contiennent de la chromite. De préférence, les particules primaires 12 mentionnées ci-dessus contiennent au moins 20 % en poids et moins de 50 % en poids de Cr2O3, et au moins 10 % en poids et moins de 30 % en poids de FeO.
(JA) 焼結開始温度を高温化でき、かつ、溶鋼の浸透を抑えることができる充填砂を提供する。 充填砂は、クロマイトを含む。この充填砂が、二次粒子10を含む。この二次粒子10が複数の一次粒子12を含む。それら複数の一次粒子12の粒径が0マイクロメートルを超え50マイクロメートル以下である。この二次粒子10に含まれる複数の一次粒子12の少なくとも一部がクロマイトを含む。好ましくは、上述された一次粒子12が、20重量%以上50重量%未満のCrと、10重量%以上30重量%未満のFeOとを含む。
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