Systematic Analysis of the SiC and Al2O3 in the Refractory for BF Lander
FU Shigang
WANG Junxiu
ZHANG Xiaoyan
WEI Xinhui
WANG Yanqin
Abstract：Utilizing the characteristic that SiO2, elemental Si, Al2O3 are soluble in hydrofluoric acid and nitric acid but SiC is insoluble in them, the simple was dissolved in hydrofluoric acid and nitric. The ashing and Filtering non melt matter together with the filter paper was incinerated and burned. The SiC content in lander material was determined by gravimetric method. Perchloric acid was added into the filtrate. By evaporating smoking, the residual fluoride ion effecting the measurement of the Al2O3 was removed. The Al2O3 content was analyzed by strong alkali separation, villiaumite replacement and EDTA titration method. The determination result is accurate and reliable and the relative standard deviations:SiC<0.134%and Al2O3<1.438%.
Keywords：refractory for BF landerSiCAl2O3gravimetric methodEDTA titration method
Publication Date：2014-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：2( 44-45 )