METHOD FOR PRODUCING MAGNESIA CHROME BRICK

PROBLEM TO BE SOLVED: To suppress a crack that generates in the firing process of a magnesia chrome brick.SOLUTION: In a method for producing magnesia chrome fired brick containing MgO and CrOas main components of a refractory raw material, a phenolic resin having a residual carbon ratio of 3% or mo...

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Bibliographische Detailangaben
Hauptverfasser:	IGABO KOICHI, KOYAKE TAMIATSU, IIDA MASAKAZU, SUWA TAKESHI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	ARTIFICIAL STONE BLASTING CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS,IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KINDOF FURNACE FURNACES HEATING KILNS LIGHTING LIME, MAGNESIA MECHANICAL ENGINEERING METALLURGY OVENS REFRACTORIES RETORTS SLAG TREATMENT OF NATURAL STONE WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To suppress a crack that generates in the firing process of a magnesia chrome brick.SOLUTION: In a method for producing magnesia chrome fired brick containing MgO and CrOas main components of a refractory raw material, a phenolic resin having a residual carbon ratio of 3% or more and 20% or less by mass is used as much as 0.5 to 5% by weight of original weight as a binder added to the refractory raw material. The main components of the refractory raw material comprises 25 to 85 mass% of MgO, 5 to 55 mass% of CrO, 1 to 14 mass% of AlO, 2 to 17 mass% of FeOand less than 5 mass% of impurities.SELECTED DRAWING: None 【課題】マグネシア−クロム質煉瓦の焼成過程でできる亀裂を抑制する。【解決手段】MgOとCr2O3を耐化原料の主成分とした焼成マグネシア−クロム質煉瓦の製造方法であって、耐化原料にバインダーとして残炭率が３〜２０質量％以下のフェノール樹脂を外掛け０．５〜５質量％用いるものである。前記耐化原料の主成分は、MgOを２５〜８５質量％、Cr2O3を５〜５５質量％、Al2O3を１〜１４質量％、Fe2O3を２〜１７質量％及び不純物を５質量％未満有である。【選択図】なし