Qattiq temir vanadiy
(2) Termit usuli
Juda erta fervanadiy ishlab chiqarish usullari bugungi kunda ham qo'llanilmoqda va alyuminiy kuchli qaytaruvchi vositadir. Vanadiy pentoksidini alyuminiy bilan kamaytirish natijasida hosil bo'ladigan issiqlik juda katta (4577kj/kg aralashma). Termitni eritish jarayonini yakunlabgina qolmay, balki reaktsiya haroratini pasaytirish uchun ferrovanadiy chiqindilarini ham o'choqqa qaytarish mumkin; shlakni kamaytirish uchun ohak, magnesiya va florit qo'shilishi mumkin Viskozite; reaktsiya tezligini kamaytirish, chayqalish yo'qotilishini kamaytirish va vanadiy hosildorligini oshirish uchun alyuminiy zarralari va vanadiy pentoksid parchalarining zarracha hajmini sozlang. Eritish uchun magniyli pechning qoplamasi yoki vanadiyli temir cüruf bilan bog'langan halqali reaksiya o'choq barrel. Eritma kam ateşleme usulini qabul qiladi. V2O5 erituvchi varaqning V2O5 tarkibi 98% dan katta yoki teng bo'lishi kerak. Bloklanish - bu<20mm×20mm, and the plate thickness is 3~5mm. Aluminum refers to aluminum particles with an aluminum content greater than 98%, a particle size less than 3mm, and aluminum bubbles of 3 to 10mm. The steel chips are ordinary carbon steel turning chips, and the roll length is <15mm. After the smelting reaction is completed, cool naturally for 16 to 24 hours. Pull out the furnace barrel, take out the iron vanadium ingot, clean and package it. The composition of ferrovanadium obtained by smelting is: V75%-80%, al1%-4%, si1.0%-1.5%, co.13%-0.2%, s≤ 0.05%, P≤ 0.075%. The composition of the slag includes About 55%-6% V2O3, about 85% (cao+mgo) Al2O3 and about 10%. Ferrovanadium consumption to produce 1t80% vanadium: 1500~1600kg molten vanadium oxide (v2o598%), 810~860kg aluminum (al98%). The smelting recovery rate of vanadium is 90%-95%. In order to reduce the vanadium content in the slag, the slag is heated immediately after the reaction to cause the metal particles suspended in the slag to sink and continue to react with the vanadium oxide and residual aluminum in the slag to increase the recovery rate of vanadium.
Ferrovanadiy qorong'i
(3) Silikon elektrotermik usul
Qaytaruvchi moddalar sifatida 75% ferrosilikon va alyuminiy ishlatiladi. V40%-60% bo'lgan ferrovanadiy yaxshilangan uch fazali ishqorli elektr yoy pechida ishlab chiqariladi. Elektr kamonli pech transformatorining quvvati 1800kVA, ish kuchlanishi 127/22{{20}}v, nominal oqimi 475{{3{{ 37}}}}a. Grafit elektrodining diametri 200 mm. Magnesiya g'ishtlari o'choq qoplamalari sifatida ishlatiladi. Pech qopqog'i xrom magnesiya g'ishtlaridan qilingan. Amaldagi xom ashyolar: V2O5 termoyadroviy plitasi (V2O5 98% dan katta yoki teng, Si 0,25% dan kam yoki teng, temir 0,30% dan kam yoki teng, P 0,05% dan kam yoki teng, s dan kam yoki 0,03% ga teng 0,02% dan kam yoki teng, na2o+k2o 1,5% dan kam yoki unga teng, plastinka qalinligi taxminan 8,0 mm , parcha o‘lchami 200 mm × 200 mm dan kam yoki teng) ferrosilikon (75% ferrosilikon, bloklar) 30 mm dan katta yoki teng); alyuminiy blok (alyuminiy ingotni 20 mm dan kam yoki unga teng ishlov berish); ohak (Cao 85% dan katta yoki unga teng, P 0,015% dan kam yoki teng, blok o'lchami 30 ~ 50 mm) va oddiy karbonli po'latdan yasalgan po'lat yoki po'lat parchalari.
ferrovanadiy changi
