To this end, a large number of related research work has been carried out in recent years, and the more prominent research results are combined processes such as weak magnetic-strong magnetic-flotation and magnetization roasting-reverse flotation. For example, the Maanshan Mine Research Institute used a strong magnetic-positive flotation process for fine ore-positive flotation of fine ore (-15 mm) of iron ore ore (including mirror iron ore, siderite and limonite), and compared to a single intensity magnetic separation process, the iron ore grade increased 2 percentage points (up to 49%, to 58% or more after burning) while the iron metal recovery increased above 12 percent (more than 74%) . In addition, closely combined with the characteristics of the roasting concentrate of Jiugang, avoiding the multi-section magnetic separation method and residual magnetic influence, using the re-grinding-reverse flotation and re-grinding-weakening-reverse flotation process to reduce the roasting magnetic separation concentrate Test for impurity content. Under the conditions of the selected particle size of 82%-75μm, the impurity content of SiO2+Al2O3 was reduced from 11% to less than 6%, and the grade of concentrate iron was increased from 55% to over 59% (the iron grade after burning was 60%). Above), the recovery rate of the miscellaneous work is up to 94%. Chocolate Fountain,Chocolate Fountain Machine,Fondue Fountain,Chocolate Fondue Fountain CIXI XINPU JIANKE ELECTRIC APPLIANCE FACTORY , https://www.cxjianke.com
Introduce the practical application of composite iron ore beneficiation technology
Most of the iron ore contains two or more iron minerals, the more species optionally worse. Among these iron ore, symbiotic iron ore, such as hematite, mirror iron ore, goethite, siderite, limonite, etc., are more difficult to select. The conventional beneficiation process can be used to sort the iron ore, but when the ore contains more siderite or limonite, the iron concentrate grade and recovery rate are difficult to increase.