Abstract
Titanium-bearing blast furnace slag in which TiO2 content reaches to 20%~23% is a kind of precious secondary resource. The research utilizes the stable characteristic of TiO2 in hydrochloric acid to digest acid-soluble matters in slag. Titanium-bearing slag is obtained after solid-liquid separation process. The optimum acidolysis reaction condition can be known through analysis of raw material granularity, acid-slag ratio, reaction temperature and effect caused by reaction time on TiO2 content in slag. XRD image analysis can prove that the chemical compounds of Al、Mg、Fe are totally acid-thinned and TiO2 content in slag reaches to above 40%. This technology provides a valuable new way for the comprehensive utilization of titanium-bearing Slag.
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