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Process for producing iron-making material composition comprising bauxite dissolution residue

机译:包含铝土矿溶解残余物的炼铁材料组合物的生产方法

摘要

A process for producing an iron-making material composition from a bauxite dissolution residue, of which any economical use has not been found heretofore, having an Na2O content of 3 wt.% or less and an ignition loss of 10 wt.% or less, which process comprises mixing bauxite with an alkali solution to prepare a slurry, feeding the slurry to an extractor to extract alumina under such a condition that most of extractable alumina can be extracted from bauxite but the dissolution of reactive silica can be minimized, separating silica dissolved in the extract deposits substantially in the form of a desilicification product, and washing and drying the separated dissolution residue.
机译:一种由迄今尚未发现任何经济用途的铝土矿溶解残余物生产炼铁材料组合物的方法,其Na 2 O含量为3重量%以下,灼烧损失为10重量%以下,该方法包括将铝土矿与碱性溶液混合以制备浆料,将浆料送入萃取器以在可从铝土矿中萃取大部分可萃取氧化铝但可将反应性二氧化硅的溶解减至最小的条件下分离氧化铝,提取物中的残留物基本上以脱硅产物的形式沉积,并洗涤和干燥分离的溶解残余物。

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