Iron ore beneficiation and processing and utilization of iron concentrate
The main iron minerals with industrial value are magnetite ( Fe3O4), hematite, pseudo hematite (Fe2O3), and limonite
2Fe2O3*3H2O and siderite(FeCO3). These minerals are weak except for magnetite, which is a strong magnetic mineral
Magnetic minerals.
China has abundant iron ore resources, including:! Magnetite ore; Multi iron mineral iron ore (magnetite), hematite
Mineral ores. Magnetite, siderite, specularite, siderite, hematite, etc Vanadium titanium magnetite ore
Stone Polymetallic iron ore containing sulfides;% Polymetallic iron ore containing sulfides, phosphorus, or rare earths& Oolitic hematite
Stone (hematite), siderite ore, siderite ore, etc.
1, The beneficiation method of iron ore
(1) Strong magnetic magnetite ore+Single magnetite ore
Due to the fact that the vast majority of ores are highly magnetic and have a simple composition, weak magnetic separation methods are often used for selection+Magnetite ore containing multiple metals
Mainly sulfide containing magnetite ore and apatite containing magnetite ore, generally using weak magnetic separation and flotation combined flow Cheng uses weak magnetic separation to recover iron, flotation machine to recover sulfides or apatite, etc.
(2) Weak magnetic iron ore+Single weakly magnetic iron ore.
Mineral Processing Technology and Equipment for Black Metal Mines
Including hematite ore, siderite ore, limonite ore, and hematite (specular iron)! Siderite ore, etc. These weaknesses
Magnetic iron ore is commonly referred to as "red ore". The beneficiation methods for red ore include strong magnetic separation, flotation, gravity separation, roasting magnetic separation, and so on
The combined application of some methods.
Weak magnetic iron ore containing multiple metals
Hematite ore or siderite ore mainly containing phosphorus or sulfides. This type of ore is generally processed through gravity separation, flotation, and strong magnetism
Choose, or combine these methods to recover iron minerals, and use flotation to recover phosphorus or sulfides.
(3) Magnet! Red (siderite) iron ore
Single magnet! Red (siderite) iron ore
Mainly hematite! Magnetite ore and magnets! Siderite ore. The methods for selecting this type of ore include! Weak magnetic separation
Combined with gravity separation, flotation, and strong magnetic separation, i.e. using weak magnetic separation to recover magnetite, and using gravity separation, flotation, or strong magnetic separation to recover weak magnetic iron
Minerals; Magnetization roasting magnetic separation method or parallel process with other methods, and magnetization roasting of single weakly magnetic iron ore
Similar, but in the parallel process of magnetization roasting magnetic separation and other beneficiation methods, weak magnetic separation and other methods are used for fine ore.
French Union Selective flocculation and sludge removal method.
Containing polymetallic magnets! Red (siderite) iron ore
The main types of ore belonging to this category are sulfide containing iron ore and phosphorus, sulfur, or rare earth containing iron ore. Mineral processing of this type of ore
The method is the most complex in iron ore beneficiation, usually using a combined process of weak magnetic separation and other methods, that is, using weak magnetic separation to recover
Collecting magnetite ore; Recovery of weakly magnetic iron minerals using gravity, flotation, or strong magnetic separation, and recovery of associated components using flotation.
