发明名称 |
Process for making macro porous ceramic spheres |
摘要 |
Process for making thermally stable macro porous spheres with or without central core cavity includes steps of homogenizing dry pulverized selective constituents with or without burnable core particles and with <25% combustibles; sprinkling over pan pelletizer wetted with PVA aqua sol binder and rolling to form spheres having <25% moisture and dry compacting in pelletizer before oven drying at 90-100° C. until moisture and core particles are partially destroyed and sintering under rotary motion of the spheres for 45-60 minutes at 1350-1380° C. before being rapidly cooled down to ambient temperature and sieving and recovering therefrom low-to-high temperatures >90% loose fill macro porous spheres for catalyst and moulded bricks/monoliths forming refractory insulation applications.
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申请公布号 |
US6616873(B1) |
申请公布日期 |
2003.09.09 |
申请号 |
US20010890724 |
申请日期 |
2001.08.01 |
申请人 |
ASSOCIATED CEMENT COMPANIES LTD. |
发明人 |
DURAISWAMI VENKATESWARAN;PARVEZ VAJIFDAR;MINOCHER CURSETJI RUSTOM;ANJAN KUMAR CHATTERJEE |
分类号 |
C04B38/00;(IPC1-7):B29C65/00 |
主分类号 |
C04B38/00 |
代理机构 |
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代理人 |
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地址 |
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