STUDY ON SOLIDIFICATION OF LAO CAI PHOSPHORUS WASTE SLAG USING FENSPAT FOR APPICATION OF ADOBE BRICK

Abstract

The phosphorus slag from yellow phosphorus production in Lao Cai was
determined by X-Ray fluorescence spectroscopy (XRF) in which contains mainly
calcium oxide (46.62%), silic oxide (38.85%), aluminium oxide (3.31%) and
other metal oxide. The mainly component SiO2, Al2O3 was play the important
role to solification process by using the clay mineral with high silic and
aluminium oxide as fenspat and alkalization process by sodium hydroxide. The
solid material by phosphorus slag and fenspat, sodium hydroxide had the high
compressive strength, reach to 14.56MPa after 28 days. The good results used to
the application of adobe brick production base on the concrete technology of
polymerization.