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MANUFACTURING METHOD OF GRANULATED BLAST FURNACE SLAG AND GRANULATED BLAST FURNACE SLAG OBTAINED BY THE SAME
PROBLEM TO BE SOLVED: To reduce fine granulation contained in circulation water, to prevent abrasion of piping and apparatuses in a circulation system and simultaneously reduce accumulation into a circulation water tank, to reduce time when facilities are stopped for cleaning an inside of the tank and to improve an operation ratio by collecting fine granulated blast furnace slag contained in the circulation water together with coarse granulated blast furnace slag as products with a simple method in a manufacturing process of the granulated blast furnace slag.SOLUTION: A manufacturing method of granulated blast furnace slag sprays fused blast furnace slag with pressurized-water (cooling water) and performs rapid cooling thereof in a path introducing the fused blast furnace slag into a granulation tank via a granulation gutter, and, subsequently, separates the fused blast furnace slag from the pressurized-water, extracts the granulated blast furnace slag and obtains the granulated blast furnace slag. The manufacturing method of the granulated blast furnace slag mixes polymer coagulant with the fused blast furnace slag by adding the polymer coagulant to the fused blast furnace slag at least at any point in the path until the fused blast furnace slag drops into the granulation tank and causes slag, water and the polymer coagulant to coexist inside the granulation tank.
【課題】水砕スラグの製造工程において、簡便な方法で、循環水に含まれる微粒水砕スラグを粗粒水砕スラグと共に製品として回収することで、循環水中に含有される微粒の水砕を低減し、循環系内の配管、装置の磨耗を防止し、同時に循環水槽への堆積を減少させて、槽内清掃のために設備を停止する時間を減らして操業率を向上させること。【解決手段】水砕樋を経て水砕槽内に溶融高炉スラグを導入する経路で、溶融高炉スラグに加圧水（冷却水）を吹き付けて急速冷却し、その後に、加圧水と分離して水砕スラグをとり出して水砕スラグを得る水砕スラグの製造方法において、前記経路の、溶融高炉スラグが前記水砕槽内に落下するまでの少なくともいずれかの地点で高分子凝結剤を添加することで、該高分子凝結剤を混合させ、前記水砕槽内で、スラグと水と高分子凝結剤とを共存させる水砕スラグの製造方法。【選択図】図１
MANUFACTURING METHOD OF GRANULATED BLAST FURNACE SLAG AND GRANULATED BLAST FURNACE SLAG OBTAINED BY THE SAME
PROBLEM TO BE SOLVED: To reduce fine granulation contained in circulation water, to prevent abrasion of piping and apparatuses in a circulation system and simultaneously reduce accumulation into a circulation water tank, to reduce time when facilities are stopped for cleaning an inside of the tank and to improve an operation ratio by collecting fine granulated blast furnace slag contained in the circulation water together with coarse granulated blast furnace slag as products with a simple method in a manufacturing process of the granulated blast furnace slag.SOLUTION: A manufacturing method of granulated blast furnace slag sprays fused blast furnace slag with pressurized-water (cooling water) and performs rapid cooling thereof in a path introducing the fused blast furnace slag into a granulation tank via a granulation gutter, and, subsequently, separates the fused blast furnace slag from the pressurized-water, extracts the granulated blast furnace slag and obtains the granulated blast furnace slag. The manufacturing method of the granulated blast furnace slag mixes polymer coagulant with the fused blast furnace slag by adding the polymer coagulant to the fused blast furnace slag at least at any point in the path until the fused blast furnace slag drops into the granulation tank and causes slag, water and the polymer coagulant to coexist inside the granulation tank.
【課題】水砕スラグの製造工程において、簡便な方法で、循環水に含まれる微粒水砕スラグを粗粒水砕スラグと共に製品として回収することで、循環水中に含有される微粒の水砕を低減し、循環系内の配管、装置の磨耗を防止し、同時に循環水槽への堆積を減少させて、槽内清掃のために設備を停止する時間を減らして操業率を向上させること。【解決手段】水砕樋を経て水砕槽内に溶融高炉スラグを導入する経路で、溶融高炉スラグに加圧水（冷却水）を吹き付けて急速冷却し、その後に、加圧水と分離して水砕スラグをとり出して水砕スラグを得る水砕スラグの製造方法において、前記経路の、溶融高炉スラグが前記水砕槽内に落下するまでの少なくともいずれかの地点で高分子凝結剤を添加することで、該高分子凝結剤を混合させ、前記水砕槽内で、スラグと水と高分子凝結剤とを共存させる水砕スラグの製造方法。【選択図】図１
MANUFACTURING METHOD OF GRANULATED BLAST FURNACE SLAG AND GRANULATED BLAST FURNACE SLAG OBTAINED BY THE SAME
水砕スラグの製造方法及び該方法によって得られた水砕スラグ
MAEDA KAZUJI (author) / SHIMASE MASAHIRO (author) / HIROKAWA YUICHI (author) / KOMON TAKESHI (author)
2015-12-24
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
/
C21B
Gewinnung von Eisen oder Stahl
,
MANUFACTURE OF IRON OR STEEL
/
F27D
Einzelheiten oder Zubehör für Industrieöfen, Schachtöfen, Brennöfen oder Retorten, soweit sie nicht auf eine Ofenart eingeschränkt sind
,
DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
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