Recovery of Rare Earth Elements from NdFeB Magnet by VIM-HMS Method
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Study on Rare Earths and Their Recycling
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Recycling of rare earths_ A critical review
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Extractive metallurgy of rare earths [Second edition] 2016
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عکس هوایی از مزارع پارس آباد دشت مغان استان اردبیل
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صبح است ساقیا قدحی پرشراب کن
دور فلک درنگ ندارد شتاب کن
زان پیشتر که عالم فانی شود خراب
ما را ز جام باده گلگون خراب کن
خورشید می ز مشرق ساغر طلوع کرد
گر برگ عیش می‌طلبی ترک خواب کن
روزی که چرخ از گل ما کوزه‌ها کند
زنهار کاسه سر ما پرشراب کن
ما مرد زهد و توبه و طامات نیستیم
با ما به جام باده صافی خطاب کن
کار صواب باده پرستیست حافظا
برخیز و عزم جزم به کار صواب کن

حافظ

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Banana screen
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What is Banana screens and how it works?

Banana or Multi-slope screens have become widely used in high-tonnage sizing applications where both efficiency and capacity are important. Banana screens typically have a variable slope of around 40-30 degree at the feed end of the screen, reducing to around 0-15 degree in increments of 3.5-5 degree. Banana screens are usually designed with a linear-stroke vibrator. The steep sections of the screen cause the feed material to flow rapidly at the feed end of the screen. The resulting thin bed of particles stratifies more quickly and therefore has a faster screening rate for the very fine material than would be possible on a slower moving thick bed. Towards the discharge end of the screen, the slope decreases to slow down the remaining material, enabling more efficient screening of the near-size material. The capacity of banana screens is significantly greater and is reported to be up to three or four times that of conventional vibrating screens.

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Vane Feedwell
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