Kalit so‘zlar
rux
gidrometallurgiya
sulfat kislotali tanlab eritish
elektroliz
ikkilamchi resurslar
kompleks qayta ishlash
Iqtibos keltirish tartibi
Annotatsiya
Elektr yoyli po‘lat eritish pechi changi (EYPE changi) yuqori dispersligi, tarkibida rux, qo‘rg‘oshin va boshqa yo‘ldosh elementlarn-ing ko‘pligi sababli zamonaviy metallurgiyada ekologik va texnologik jihatdan eng muammoli chiqindilardan biri hisoblanadi. So‘nggi yillarda metall shixtasida rux saqlovchi ikkilamchi xomashyolar ulushining ortib borishi natijasida ushbu chang miqdori ham ko‘paymoqda. Mazkur tadqiqot ishida EYPE changini kompleks qayta ishlashning sulfat kislotali tanlab eritishga asoslangan gidrometallurgik usuli ko‘rib chiqildi. Erituvchi reagent sifatida tarkibida H₂SO₄ (120–160 g/l) va Zn (30–50 g/l) bo‘lgan ishlatilgan sulfat kislotali elektrolit qo‘llanildi. Tanlab eritish jarayoni 60–65 °C haroratda, qattiq-suyuqlik nisbatida 1:6, 120–240 daqiqa davomida olib borildi. Tadqiqot natijalari rux tarkibli fazalarning eritish kinetikasini jadallashtirishi, energiya sarfini kamaytirishi hamda ruxni eritmadan samarali ajratib olish va keyinchalik elektroliz orqali katod metallini olish imkoniyatini ta’minlashini ko‘rsatdi. Bundan tashqari, tanlab eritishdan keyin hosil bo‘ladigan temir tarkibli qoldiqni po‘lat eritish jarayoniga shixta qo‘shimchasi sifatida qaytarish mumkinligi asoslandi. Taklif etilayotgan texnologiya EYPE changini qayta ishlashning an’anaviy pirometallurgik usullariga nisbatan resurs tejamkor, energiya jihatdan samarali va ekologik toza muqobil yechim hisoblanadi. Ushbu yondashuv metallurgiya chiqindilarini qayta ishlash, ruxni qayta tiklash va temir komponentlarini ishlab chiqarishga qaytarish orqali aylanma iqtisodiyot tamoyillarini amalga oshirishga xizmat qiladi.
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