STUDY ON THE HIGH-ALUMINOUS REFRACTORY STUDY ON THE DESILICONING PHENOMENON BY THE METHOD OF THERMODYNAMICAL CALCULATIONS By Toshio watanabe Reducing the silica, which contained in high aluminous refractory, to metalic silicon with carbon at high temperature, is interesting process in Refractory Industry. Auther has studied the machanisms of the reducing reactions by the method of the thermodyn...

In a post-pandemic world, health and environmental safety will become more important issue than it was before the COVID-19 pandemic. Several fields of engineering, including foundry industry, have already adopted measures in workplace. The risk pulmonary disease caused by inhalation fine particles silica sand, main moulding material used is rampant that industry. terms protection, new regulator...

OBJECTIVE To investigate the relation between rheumatoid arthritis and occupational exposure to silica in pottery and related industries. METHODS Medical records of 8325 men and women born 1916-45 and employed in pottery, refractory material (aluminosilicate or silica), and sandstone industries were examined to identify cases of rheumatoid arthritis. Medical and employment histories were extr...

Abstract Cooling history of fused cast Alumina-Zirconia-Silica (AZS) refractory blocks is recorded with thermocouples. Postmortem investigations are performed including hot tears. Discussion about solidification path done the purpose to better understand phenomena occurring during casting. Heat transfer simulations compared temperature histories. Mechanical outputs from THERCAST ® analyzed, rev...