RUX VA TEMIRNI O‘Z ICHIGA OLGAN PO‘LAT ERITISH CHANGINI QAYTARUVCHI KUYDIRISH JARAYONI BO‘YICHA TADQIQOTLAR
Referat
Elektr yoyli pechlarda hosil bo‘ladigan po‘lat eritish changi temir va rux kabi qimmatbaho metallarni o‘z ichiga olgan muhim texnogen resurs hisoblanadi. Shu bilan birga, ushbu changni noto‘g‘ri utilizatsiya qilish jiddiy ekologik xavf tug‘diradi. Mazkur tadqiqotda rux saqlovchi po‘lat eritish changini qaytaruvchi kuydirish usuli orqali, qaytaruvchi sifatida neft koksidan foydalangan holda qayta ishlash imkoniyati ko‘rib chiqilgan. “Uzmetkombinat” AJ elektro-po‘lat eritish sexining gaz tozalash tizimidan yig‘ib olingan changning kimyoviy tarkibi tahlil qilindi. Tajribaviy tadqiqotlar 1200 °C gacha bo‘lgan haroratlarda, qaytaruvchi moddaning chang massasiga nisbatan 40–90 massa foiz miqdorida olib borildi. Ruxning uchib chiqish darajasi hamda temir oksidlarining qaytarilish xatti-harakati atom-absorbsion spektroskopiya usuli yordamida baholandi. Olingan natijalar shuni ko‘rsatdiki, koks miqdorini 80–90 massa foizgacha oshirish ruxni 50 % dan ortiq miqdorda ajratib olishni hamda temir oksidlarini deyarli to‘liq metall holatgacha qaytarishni ta’minlaydi. Hosil bo‘lgan qattiq mahsulot (klinker) bevosita po‘lat ishlab chiqarish jarayonlarida qo‘llanishi mumkin, rux esa bug‘ fazasida kontsentratsiyalanadi. Taklif etilayotgan texnologiya ekologik va iqtisodiy jihatdan maqsadga muvofiq bo‘lib, Waelz turidagi mavjud uskunalardan foydalangan holda amaliyotga joriy etilishi mumkin.
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