Wechat QR code
Wechat QR code
The selection of magnetite beneficiation equipment is based on the beneficiation process, and the process is based on the properties of magnetite ore. Common process methods include: magnetic separation, flotation, gravity separation, etc. Below we understand the relevant equipment according to the process.
General magnetite magnetic separation equipment is mainly suitable for single magnetite separation. Most of the iron minerals in this type of ore are magnets. Minerals, magnetic separation method can effectively recover magnetic minerals. When the grinding particle size requirement is >0.2mm, a one-stage grinding-magnetic separation process is generally used; when the grinding particle size requirement is<0.2mm, a two-stage grinding-magnetic separation process can be used; if it is coarsely ground, qualified tailings will be separated When, the staged grinding-magnetic separation process is adopted.
The main equipment of this process is: grid ball mill, overflow ball mill, classifier, wet magnetic separator, magnetic drum
Grid Ball Mill:Generally used in the first-stage grinding operation of magnetite to process coarser-grained minerals;
Overflow ball mill:Suitable for the second stage of the two-stage grinding operation Grinding, the particle size of the magnet ore reaches the separation requirements;
Classifier:It can be combined with the first-stage and second-stage grinding operations to form a grinding classification system;
Wet magnetic separator: Mainly used to select qualified magnetite concentrate after grinding;
Magnetic drum:At all levels When a certain amount of single gangue minerals are produced in the crushed products, a magnetic drum needs to be used for pre-selection before grinding.
Generally, magnetite flotation equipment is used in conjunction with magnetic separation equipment. When the magnetite contains silicate or carbonate minerals, And when cobalt pyrite, chalcopyrite and apatite are associated, they need to be separated by flotation-magnetic separation. The process methods mainly include two processes: weak magnetic separation-cation reverse flotation and weak magnetic separation-anion reverse flotation.
Weak magnetic separation - cation reverse flotation: Starch is commonly used as a magnet inhibitor, and amines such as dodecylamine are used as collectors to deal with high silicon content. Magnetite.
Weak magnetic separation - anion reverse flotation: Use chemicals to make minerals alkaline to suppress iron minerals, suitable for magnetite containing more iron silicate minerals .
Commonly used equipment at this stage include: sf flotation machine, jjf flotation machine, xcf flotation machine, chemical mixing tank
SF flotation machine: In magnetite flotation operations, it mainly performs roughing and sweeping operations;
jjf flotation machine:It is often combined with sf flotation machine in several groups to complete roughing and sweeping operations in a horizontal configuration;
xcf flotation machine Selector: In magnetite flotation operation, it is mainly used for selection;
Pharmaceutical stirring tank: Used in front of the flotation machine, through stirring Minerals and chemicals are fully mixed;
Wet magnetic separator: Generally used to perform weak magnetic pretreatment before flotation operation.
Magnetite gravity separation equipment is generally a combined equipment with magnetic separation and flotation to complete magnetite separation operations and is suitable for separation. Containing polymetallic magnet-hematite siderite, the magnetite is recovered by weak magnetic separation, and then the weak magnetic iron mineral is recovered by gravity separation, flotation or strong magnetic separation.
The gravity separation equipment that can be applied to this mineral processing method include: shaker, jig, spiral chute and centrifuge equipment
Shaking table equipment: Generally suitable for processing particle size Finer polymetallic magnetite;
Jig equipment:In polymetallic magnetite, it is used to process coarser particles;
Spiral chute equipment:Suitable for processing fine-grained (0.1~0.37mm) ores with low mud content in composite magnetite ores;
Centrifugal Ore concentrator equipment:Suitable for processing coarse-grained magnetite with a large specific gravity difference, mainly used for pretreatment.
In addition to the above-mentioned processes and equipment, for some magnet ores containing rare earth mixtures, iron minerals can also be separated through the reduction roasting magnetic separation-flotation process.
According to the above introduction, due to the different types of iron contained in magnet minerals and the differences in other gangue minerals, the mineral processing methods and mineral processing equipment used are different, which need to be based on the actual ore characteristics and mineral processing plants. Only by designing appropriate beneficiation processes and customizing appropriate equipment can high-quality magnetite concentrate be obtained.
Consult
Message
