With the rapid development of our economy in recent years, the crude steel production greatly increased at home which demands a big need for the iron ore mining or beneficiation capacity. Generally speaking, the iron ore in our country has fine overall size, complex composition, high impurity content and low grade, the beneficiation or mining of iron ore index is very poor by the conventional beneficiation process. In order to take advantage of the mineral resources, the iron ore reverse mining or beneficiation process came into being. This essay will focus on the iron ore reverse flotation.
Flotation technology is very common in the iron ore beneficiation. The conventional mining or beneficiation process has a poor effect on the removing the impurity among the iron ore mine. Therefore, in order to solve the dilemma and with more than fifty years development, humans find that the reverse mining or beneficiation is effective in removing the fine impurity (phosphorus and sulfur) of the iron concentration. They also find the unique advantages of the reverse iron ore mining or beneficiation in the process of the application of it. The mining or beneficiation process operates in the certain working condition by adding certain positive iron ore mine mining or beneficiation reagents and the floating material is mainly iron concentration. While the iron ore reverse mining or beneficiation takes advantage of the anti-flotation reagent and operate in the certain working condition. The floating material is mainly gangue minerals. As we all know that the density of the gangue minerals is smaller than the concentration. So comparing to the flotation, the effect of the reverse iron ore mining or beneficiation is universally better and the anti-flotation reagents used in the reverse mining or beneficiation is less than that used in the flotation, which reduces the production costs to a certain degree. The slurry after iron ore mining or beneficiation is easier to process and go into next process operation. The application of the reverse mining or beneficiation is frequent in the iron ore beneficiation. Except for the above reason, there is an important reason that is the usage range of the mining or beneficiation reagent is narrow. While the reverse mining or beneficiation is more flexible as well as has wider usage range and good mining or beneficiation effect in the iron ore mining or beneficiation equipment.
To make the reverse mining or beneficiation process more perfect, the study of the new reverse mining or beneficiation is very important. In terms of the trend of development, the reverse mining or beneficiation reagent is developing towards the diversification and compounding. The modern study direction is that using two kinds of reverse mining or beneficiation reagent to mix into a new compound pharmacy in a certain proportion.
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