Flotability Improvement of Ilmenite Using Attrition-Scrubbing as a Pretreatment Method

Abstract

Flotation technology of the recovery and utilization of ilmenite from tailings of iron beneficiated in Panzhihua was investigated based on mineralogical study. The results of mineralogical study show that the main occurrence of the valuable mineral are liberated grains of ilmenite. Experimental results of flotation conditions show that attrition-scrubbing raw ores exhibit good flotability with higher recoveries and a slight decrease in grade compared to ores without attrition-scrubbing. Further, open-circuit experiments also prove the superiority of attrition-scrubbing raw ores. The results of closed-circuit experiments show that qualified ilmenite concentrate can be obtained and the yield, grade, and recovery are 22.26%, 47.06%, and 60.73%, respectively. Theoretical study and analysis show that there are two contributions to superior flotability for attrition-scrubbing samples. The first is that the attrition-scrubbing samples can uncover more ferrous ions on the newly-produced fresh ilmenite surface, resulting in the increase in active sites. The other is that in the process of attrition-scrubbing, the transformation of ferrous ions to ferric ions can be promoted.

Pyrophyllite: An Economic Mineral for Different Industrial Applications

“…Chemical separation techniques include calcination/roasting and leaching using oxalic acid and an ammonia solution. Separation techniques that combine chemical and physical separation techniques include sequential calcination or roasting followed by magnetic separation [90][91][92][93][94]. These techniques are discussed based on researchers' contributions to the processing of low-grade pyrophyllite ore.…”

A New Route of Roasting-Flotation-Leaching for the Beneficiation of Ti-Bearing Minerals from Altered Vanadium Titanomagnetite

“…During the flotation process, reagents play conclusive roles in modifying the surface properties to promote their floatability. On an industrial production scale, the frequently used collectors in ilmenite flotation are fatty acids and their soaps, along with fuel oils [21,22]. Fatty acids and hydroxymates are usually used as collectors to float anatase, and the performance of hydroxymates is superior to fatty acids [23,24].…”

Discovery of a Novel Cationic Surfactant: Tributyltetradecyl-Phosphonium Chloride for Iron Ore Flotation: From Prediction to Experimental Verification

“…Bench-scale flotation tests were performed in an XFD type flotation cell (self-aeration) of which the volume for rougher flotation and cleaner flotation were 1.5 L and 1 L, respectively [41]. 500 g actual magnetite ores (−0.074 mm, 90%) were used in the rougher flotation with a speed of 1650 r/min.…”