Optimizing the removal of iron oxide from Egyptian feldspar ore

IF 1.3 4区工程技术 Q4 CHEMISTRY, PHYSICAL

Physicochemical Problems of Mineral Processing Pub Date : 2023-12-09 DOI:10.37190/ppmp/176420

K. Yassin, A. Elbendari, El-Sayed Hassan

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Abstract

The demand for feldspar as a raw material for various industrial applications continuously increases. Feldspar is a primary raw material in manufacturing ceramics, glass, fillers, welding electrodes, and enamel. Feldspar is often associated with iron oxide, which decreases its economic value and hinders its industrial application. The present work aimed at reducing iron oxide content in Egyptian feldspar ore from the Wadi Zerabi locality. Ball milling was used for preparing feldspar feed of size -250+45µm. Carpco dry high-intensity magnetic separation followed by acid leaching processes were carried out in order to decrease the iron contamination and increase the feldspar content. A Box-Behnken statistical design was used to optimize the magnetic separation results. From a feldspar feed containing 1.40% Fe2O3, a non-magnetic concentrate of 0.25% Fe2O3 was obtained. The Fe2O3 removal reached up to 82% with a high yield as the % weight of non-magnetic feldspar reached up to 97.5%. The leaching process further reduced the iron oxide content down to 0.19 %. Also, the feldspar whiteness was improved from 65.17% in the original ore to 85.60% in the leached product.

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优化去除埃及长石矿石中的氧化铁

长石作为各种工业用途的原料，需求量不断增加。长石是制造陶瓷、玻璃、填料、焊条和搪瓷的主要原料。长石常与氧化铁联系在一起，这降低了长石的经济价值，阻碍了其工业应用。目前的工作旨在减少来自瓦迪泽拉比地区的埃及长石矿石中的氧化铁含量。采用球磨法制备-250+45µm长石进料。为了降低铁污染，提高长石含量，对矿石进行了干法强磁选后酸浸工艺。采用Box-Behnken统计设计对磁选结果进行优化。从含Fe2O3 1.40%的长石进料中，获得了Fe2O3 0.25%的非磁性精矿。当非磁性长石的%重量达到97.5%时，Fe2O3去除率高达82%，收率较高。浸出工艺进一步降低了氧化铁含量至0.19%。长石白度由原矿石的65.17%提高到浸出产物的85.60%。

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来源期刊

Physicochemical Problems of Mineral Processing CHEMISTRY, PHYSICAL-MINING & MINERAL PROCESSING

自引率

6.70%

发文量

期刊介绍： Physicochemical Problems of Mineral Processing is an international, open access journal which covers theoretical approaches and their practical applications in all aspects of mineral processing and extractive metallurgy. Criteria for publication in the Physicochemical Problems of Mineral Processing journal are novelty, quality and current interest. Manuscripts which only make routine use of minor extensions to well established methodologies are not appropriate for the journal. Topics of interest Analytical techniques and applied mineralogy Computer applications Comminution, classification and sorting Froth flotation Solid-liquid separation Gravity concentration Magnetic and electric separation Hydro and biohydrometallurgy Extractive metallurgy Recycling and mineral wastes Environmental aspects of mineral processing and other mineral processing related subjects.