鐵是地球上第二常見的元素, 包括近 5% 地殼. 鐵礦石是含有鐵的岩石和礦物, 通過採礦和加工進行精鍊. 幾乎 100% 開採的鐵礦石用於鋼鐵生產, 使其對從訂書釘到建築物的所有事物都至關重要.
The dry separation industry is fast-growing, developing environmentally friendly methods to contend with the growing risks of iron ore tailings management. Recent high-profile failures of tailing dams and impoundments have generated a strong interest in the industry to find alternative uses for tailings and eliminate high-risk wet tailing storage ponds.
ST 設備 & 技術 (STET) is a leader in the water-free minerals separation equipment field. Our groundbreaking electrostatic separation equipment utilizes a dehydrated method of fine iron separation based on electrical conductivity.
Beneficiation is the term for reducing the size of valuable iron ore particles and separating them from the gangue (無法使用的礦物), which are then discarded as tailings. 有幾種不同的濕法和干法分離方法. The type of beneficiation employed depends on the physical and mineralogical properties specific to each iron ore deposit.
Iron ore processing involves a series of steps to extract and refine iron from its ore deposits. The first stage is mining, where large-scale open-pit or underground operations extract iron ore from the Earth. Once extracted, the ore undergoes crushing and screening to break it into smaller pieces and classify it based on size. Following this, the ore is subjected to various 鐵礦石選礦 processes such as gravity separation, 磁選, and flotation to remove impurities and increase iron content. Magnetic separation is particularly effective in separating iron ore from gangue minerals due to the magnetic properties of iron. 然而, magnetic separation loses its effectiveness on finer particles, often lost as tailings.
Iron ore tailings, which are the byproducts generated during iron ore processing, can pose several environmental and safety challenges. Some of the key problems associated with iron ore tailings include:
Electrostatic separation is an industrial process using electrostatic charges to separate large quantities of material particles differentially. 它最常用於對礦石進行分類, 説明去除異物並留下純化物質. Because STET’s electrostatic separation equipment is uniquely suited to processing fine iron ore minerals, it can drastically reduce the amount of tailings generated during a traditional iron ore processing operation.
靜電分離 is a completely dry processing operation with zero water consumption, 這意味著泵送不會消耗任何能量, 變厚, and drying and no costs from water treatment and disposal. Other benefits of electrostatic separation include lower investment and operating costs and ease of permitting due to its minimized environmental impact. This process requires no chemical additives, further enhancing its environmental benefits.
ST 設備 & 技術 (STET) develops and manufactures Tribo electrostatic separators for the fly ash and minerals industry using a proprietary electrostatic separation process developed by an MIT scientist. We’re proud of our unique iron ore beneficiation process, which benefits the mining industry and the environment.
Our specialized separation equipment for fine minerals has developed an impeccable reputation in North America, 歐洲, and Asia thanks to a dedicated team of experts solving separation challenges for our customers.