YU HO REFRACTORIES Co., LTD.


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【REFRACTORY PATCHING】

They are commonly installed into place by hand. Patching Refractories have been widely used for steel industry, chemical furnaces, boilers, nonferrous furnaces and the other high temperature furnaces. The storage of brick has become serious, and the expense of installed by labor much higher year by year. Judged from this trend, use of patching refractories will be expanded in the future.

＼　代號 Brand 特性質Properties		PL-70C	PL-70	PL-70G	PL-90	PL-90M	PL-90P
最高使用溫度 (℃) Max. Service Temp.		1650	1650	1650	1800	1800	1800
施工需要量 (T/M3) Quantity Required		2.65	2.65	2.65	2.95	2.95	2.95
體密度(g/cm3) Bulk Density	110℃×24hrs 1500℃×3hrs	2.50 2.40	2.50 2.40	2.50 2.40	2.90 2.75	2.90 2.70	2.90 2.65
耐壓強度 (kg/cm2) Compressive Strength	110℃×24hrs 1500℃×3hrs	≧120 ≧550	≧120 ≧550	≧120 ≧550	≧150 ≧550	≧150 ≧550	≧150 ≧550
再熱變形率 (%) 1500℃×3hrs Permanent Linear Change		+1.2	+1.2	+1.6	+1.0	+1.2	+1.0
熱傳導率(kcal-m.hr.℃) Thermal Conductivity	500℃ 1000℃	1.15	1.15	1.15	1.32	1.30	1.30
粒度 (%) Grain Size	+1 mm -1 mm	30～40 60～70	15～25 75～85	5～10 90～95	25～40 60～75	20～30 70～80	--- 100
化學成份 (%) Chemical Composition	Al2O3 SiO2 P2O5	70 25 3	70 25 3	70 25 3	90 5 3	90 5 3	90 5 3