column flotation, iron ore, column tests, silica, froth flotation inTroducTion The depletion of high grade reserves coupled with increasing market pressure for improved product quality has forced iron ore producers to re examine their process flowsheets and evaluate alternate or supplemental processing routes. The requirement for
Flotation studies of naturally occurring iron ores further established the fact that it is easier to upgrade the iron values from a high silica ore compared to a high alumina ore. It was possible to produce an overall iron concentrate containing 62% Fe with 86% recovery for a silica bearing ore, but the grade and recovery of an alumina bearing ...
flotation cells. CPT Inc. has developed a flotation process for the production of Direct Reduction as well as Blast Furnace grade concentrates utilising column flotation technology. This process has been adopted by several major iron ore producers and current aggregate production is approximately 50 MTPY of DR grade concentrates.
With the depletion of high grade iron ore, the removal of alumina containing minerals and phosphorous from low grade iron ore has received increasing attention in iron ore industry. The flotation behaviour of kaolinite was found to be opposite to that of quartz and special care has to be taken for the successful removal of the clay mineral.
Iron ore is the key raw material for steel production enterprises. Generally, iron ore with a grade of less than 50% needs to be processed before smelting and utilization. After crushing, grinding, magnetic separation, flotation, and gravity separation, etc., iron is gradually selected from the natural iron ore.
To answer your question I think its best to consider the anatomy of forced air vs. induced air flotation cells. The induced air flotation cell has the rotor position at the top of the cell as it needs to be close to the surface to pull in air; hence the majority of the mixing energy is dissipated in the top of the cell.