СТАН ТА ПЕРСПЕКТИВИ ПЕРЕРОБКИ ПИЛУ ЕЛЕКТРОСТАЛЕПЛАВИЛЬНОГО ВИРОБНИЦТВА І ТЕХНОГЕННИХ ЗАЛІЗОВМІСНИХ МАТЕРІАЛІВ
DOI:
https://doi.org/10.34185/1991-7848.2025.01.21Ключові слова:
електродугова піч, пил, цинк, вуглець, технологія, термодинамікаАнотація
Металургійна технологія переробки пилу ДСП та залізовмісних відходів металургійного виробництва.
Аналіз фізико-хімічних процесів, експериментальні дослідження та розробка інноваційних технологічних рішень та рекомендацій щодо пилу ДСП та залізовмісних відходів металургійного виробництва.
Теоретичні дослідження базуються на основних положеннях фізичної хімії і теорії металургійних процесів. Розрахунки термодинамічної рівноваги оксидних систем основані на теорії Гіббса та реалізовані за допомогою комп’ютерної програми «FASTSage 6.0»; дослідження хімічного складу фазових складових марганцевих феросплавів виконали з застосуванням растрового електронного мікроскопу YSM-6300LA фірми JEOL, Японія.
Ефективне видалення цинку з пилу ДСП можливе вже при помірних температурах 1000…1100оС, у тому числі при використанні як вуглецевого відновника некондиційних вуглецевих матеріалів. Для отримання рідкого продукту слід передбачити надмірну кількість вуглецю на навуглецювання з тим, щоб знизити температуру одержуваного розплаву.
При температурах порядку 1000…1100оC залізовмісний пил і шлам зазнають змін, що призводить до зменшення вмісту Zn в обробленому матеріалі, переходу вихідних пилуватих матеріалів в компактну, досить міцну масу.
Спільна переробка окалини та пилу ДСП шихтуванням у різних пропорціях не є раціональною, оскільки в цьому випадку відбувається зменшення концентрації цинку, що збирається в газоочистці переробного агрегату. Більш ефективним буде організація почергової переробки пилу ДСП та окалини у різні часові періоди (наприклад, помісячно).
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