Iron is the second most common element on Earth, comprising nearly 5% of Earth’s crust. Iron ores are rocks and minerals that contain iron, refined through mining and processing. כּמעט 100% פון מיינד אייַזן אַרץ איז געניצט אין שטאָל פּראָדוקציע, מאכן עס יקערדיק פֿאַר אַלץ פון סטייפּאַלז צו בנינים.
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.
סטריט עקוויפּמענט & טעכנאָלאָגיע (סטעט) 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 (אַניוזאַבאַל מינעראַלס), which are then discarded as tailings. עס זענען עטלעכע פאַרשידענע מעטהאָדס פון נאַס און טרוקן צעשיידונג. 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 אייַזן אַרץ בענעפיסיאַטיאָן processes such as gravity separation, מאַגנעטיק צעשיידונג, 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. אָבער, 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. עס איז מערסט קאַמאַנלי געניצט צו סאָרט מינעראַל אַרץ, העלפּינג צו באַזייַטיקן פרעמד מאַטעריאַל און לאָזן הינטער אַ פּיוראַפייד מאַטעריע. 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.
ילעקטראָוסטאַטיק צעשיידונג is a completely dry processing operation with zero water consumption, וואָס מיטל קיין ענערגיע איז יקספּענדיד פֿאַר פּאַמפּינג, טיקנינג, 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.
סטריט עקוויפּמענט & טעכנאָלאָגיע (סטעט) 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, אייראָפּע, and Asia thanks to a dedicated team of experts solving separation challenges for our customers.