A study of reactivity of alumina (in Clays) with phosphoric acid. | [Pakistan journal of scientific research • 1989]

Author(s):

1. M. Sohail: Glass & Ceramics Division, PCSIR Laboratories Complex, Lahore, Pakistan

2. M. Siddique Chaudhry: Glass & Ceramics Division, PCSIR Laboratories Complex, Lahore, Pakistan

3. M. Khalid Farooq: Glass & Ceramics Division, PCSIR Laboratories Complex, Lahore, Pakistan

Abstract:

The chemical reactivity of the alumina content in different Pakistani clays with phosphoric acid was studied for use in phosphate bonded refractories and refractory castables. In chemically bonded refractories, the alumina from clays react with the phosphoric acid producing aluminium-polyorthophosphate, which is a white viscous liquid, soluble in water at room temperature acts as a strong bonding agent in high temperature unfired refractories. Refractory castables bonded with this material remain permanently bonded at furnace temperatures. The objective of this work is to achieve better understanding of the mechanism of phosphate bonding in high alumina refractory compositions through the formation of aluminium polyorthophosphate.

Page(s): 69-78

DOI: DOI not available

Published: Journal: Pakistan journal of scientific research, Volume: 41-42, Issue: , Year: 1989

Keywords:

Keywords are not available for this article.

References:

References are not available for this document.

Citations

Citations are not available for this document.

Citations

Downloads

Views