由含钛高炉渣低温酸碱法制取富钛料

Preparation of Titanium-rich Raw Material from Titanium-bearing Blast Furnace Slag by Low Temperature Acid-base Method

根据攀枝花高钛型高炉渣的组分性能和特点，采用低温化学分离提取法，将含钛高炉渣中的其它主要杂质组分除去，使钛富集成可用于工业生产的富钛料。试验过程分2个步骤：第一步是将5～6mol／L盐酸溶液按酸渣比为0．9～1．0的比例，在100℃下与空冷含钛高炉渣反应4h，将主要的酸溶性组分镁、铝、钙等分离；第二步用NaOH与前面得到的主成分为钛和硅的过滤渣在碱渣比为0．5，100℃下反应2h，将硅与钛组分分离，即得到含TiO2达73％左右的富钛料。

According to the component properties and characteristics of high titanium blast furnace slag in Panzhihua, the other main impurity components in titanium-bearing blast furnace slag were removed to make titanium-rich raw material for industrial use by low temperature chemical separation and extraction method. The test procedure was divided into 2 steps. The first step was that 5 -6 mol/L hydrochloric acid solution reacted with cool titanium-bearing blast furnace slag with the mole ratio of acid and slag 0.9 - 1.0 at 100 ℃ for 4 h, which can separate the main acid-soluble components such as Mg,A1 and Ca. The second step was that NaOH reacted with the filter slag at 100 ℃ for 2 h in which the mole ratio of base and slag was 0.5, which can separate Si and Ti components, and titanium-rich raw material with the content of TiO2 about 73% was obtained.