Development and utilization of Bosite low-grade magnetite, lean hematite ore beneficiation method

The development and utilization of low-grade magnetite in Bosite, the beneficiation method of lean hematite ore
The beneficiation of hematite and hematite ore
Hematite and hematite magnetite account for a high proportion of the selected ores proportion. They are mostly distributed in Anshan, China, the Kursk Magnetic Anomaly Area of the former Soviet Union, Michigan, the United States, Quebec, Canada, Cauai, Brazil, and Bangge, Libya. For ores based on hematite, the main task is to select coarse-grained ore with good physical properties, while the utilization of fine-grained hematite ore is still a subject of exploration in the world. China's hematite ore has a disseminated structure of fine grains and fine grains, mainly containing hematite and quartz. The proportion of hematite and magnetite in hematite ore varies greatly. According to their proportion, it can be divided into silicon Karnite type (such as Bangge ore) and specularite type (such as Carroll ore).
Ore beneficiation process of hematite ore. Nowadays, magnetic separation && gravity selection process, magnetic separation && flotation process or gravity selection && magnetic separation && flotation process are mostly used. Some processing plants first use gravity separation to recover hematite. Then magnetic separation method is used to recover magnetite from the gravity separation tailings, and flotation method (Lana concentrator in Norway) and electric separation method (Wabush concentrator in Canada) can be used for separation, or it can be used before the last stage of separation. Finely screened. The magnetic separation && gravity separation process first uses weak magnetic field magnetic separation to recover magnetite, and then uses gravity separation to recover hematite from the magnetic separation tailings. The magnetic separation && flotation process uses flotation as the separation of hematite concentrate. The main process is to use gravity separation to recover coarse-grained hematite and magnetite, and use magnetic separation to recover fine-grained magnetite. For dense crystalline hematite quartzite, gravity separation is widely used to select coarse-grained ores, and strong magnetic separation or flotation is used to select fine-grained ores. For clayey hematite ore, ore washing or dry magnetic separation is mainly used.
Ore beneficiation of hematite ore. Ore washing, gravity separation, flotation, magnetic separation and roasting magnetic separation can be used, or flotation and electric separation can be used as beneficiation operations to form different forms of mineral processing processes according to different ore properties. When coarse-grained or massive ores are mixed with depleted materials, heavy suspension is often used for mineral processing. Some concentrators use jigging for granular ore, and use spiral concentrators for gravity separation of medium and fine-grained ores, or use strong magnetic separators for magnetic separation.
For the quartz iron rock embedded with fine particles, it is processed by flotation method or roasting magnetic separation method. American mineral processing plants use selective flocculation and cation reverse flotation to process ores that are finely ground to %. Anshan Sintering Plant and Qidashan Ore Concentrator once used shaft furnaces. The former Soviet Union's Krivo Central Mining and Dressing Company's ore dressing plant used a rotary kiln to reduce and roast fine-grained hematite ore and then magnetically separate it to obtain iron concentrate. .
Henan Bosite Machinery Manufacturing Co., Ltd. has a complete set of mineral processing equipment production lines. The main products include: ball mill, cement ball mill, steel slag ball mill, gold selection ball mill, rod mill, jaw crusher, impact crusher, spiral classifier, high weir classifier, mining flotation machine, flotation machine, Magnetic separator, high-intensity magnetic separator, permanent magnet magnetic separator, high-intensity magnetic dry separator, dryer, pellet dryer, slime dryer, feeder, vibrating screen, high-frequency screen, etc.