Here, "high-titanium slag" refers to a metallurgical slag product with titanium dioxide as the main constituent obtained after reductive separation of the iron phase during the smelting of ilmenite or titanium-containing feedstock in a blast furnace or electric furnace, typically containing a relatively high content of TiO₂, accompanied by small amounts of iron oxide, magnesium oxide, calcium oxide and other impurities. After such high-titanium slag is used as a by-product or intermediate product, following crushing, grading and further processing it can be used as a raw material for titanium dioxide production, titanium chemical processing or the preparation of other titanium-containing materials, achieving resource recovery.