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采用纯磁铁矿和磁铁矿与石英各占50％(重量)的人工合成混合物进行了初步试验。试验表明,用Cu~(++)离子活化,在热矿浆中活化-调浆,最适宜的温度是80～100℃,并用氢氟酸作脉石的抑制剂时,能改善磁铁矿的浮选。本方法对实际矿石的适用性的研究是采用芬兰奥坦麦基选矿厂的钛铁矿浮选给矿进行的,其中包括脱泥和不脱泥的两种矿浆。采用通常的脱泥矿浆能得到含TiO_2很高的钛铁矿精矿,甚至超过47.5％ TiO_2(奥坦麦基钛铁矿中含TiO_2约49％),而此时TiO_2的浮选回收率亦高(约94％)。浮选前的脱泥是不必要的。由未脱泥的矿浆产出之精矿,其中TiO_2含量相当于现场日产的精矿含量(约45％TiO_2),而TiO_2的回收率(约90％)大大高于通常指标(70～80％)。这种新方法具有以下优点:活化剂用量较少,约400～500克/吨固体;捕收剂塔尔油的耗量亦低,视含泥量多少而采用400～1000克/吨固体;不需用燃料油和乳化剂;没有必要脱泥;活化-调桨时间和浮选时间短;浮选尾矿仅含少量的脂肪酸而毫无燃料油;消除了有关尾矿水的化学污染问题。
A preliminary experiment was carried out using a synthetic magnet mixture of pure magnetite and 50% by weight of magnetite and quartz each. The results show that activation with Cu ~ (+ +) ion and activation - slurrying in hot slurry are the most suitable temperature of 80 ~ 100 ℃. When hydrofluoric acid is used as an inhibitor of gangue, it can improve the magnetite Flotation. The applicability of this method to actual ores has been investigated using flotation of ilmenite flotation at the Oamakki beneficiation plant in Finland, including both deslimed and non-deslimed slurries. Using conventional slurries can result in ilmenite concentrates that are very high in TiO 2 and even more than 47.5% TiO 2 (about 90% of TiO 2 in the Otan-Magetite ilmenite), at which point the flotation recovery of TiO 2 High (about 94%). Slurry removal before flotation is not necessary. The concentrate produced from non-deslimed pulp, with TiO 2 content equivalent to that of on-site Nissan concentrate (about 45% TiO 2), while the recovery of TiO 2 (about 90%) is much higher than the normal index (70-80% ). The new method has the following advantages: the amount of activator is less, about 400-500 g / t solid; the collector tar oil consumption is also low, depending on the amount of mud and the use of 400 to 1000 g / t solid; No need to use fuel oil and emulsifiers; No need for mud removal; Activation - Shorter pitching time and flotation time; Flotation tailings contain only a small amount of fatty acids without fuel oil; Eliminate chemical contamination of tailings water .