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Red mud recycling technology research

Author: ChenLaiBao
Tutor: MaZhengXian
School: Liaoning Technical University
Course: Mineral Processing Engineering
Keywords: Red mud Silica Iron oxide red Aluminum hydroxide Orthogonal
CLC: X758
Type: Master's thesis
Year: 2009
Downloads: 213
Quote: 1
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Abstract


This paper provides a Shandong Aluminum waste red mud and industrial hydrochloric acid as raw materials , using the most simple chemical precipitation method , the different non-metallic and metal compounds ( silicon dioxide , red iron oxide , aluminum hydroxide and anhydrous chlorine calcium ) from the complex composition of red mud sequential isolated and purified by . According exploratory trials and single- factor test results to determine the impact of red mud extract useful elements of the main factors are: the reaction temperature , reaction time and solid-liquid mass ratio . In order to study investigated the useful elements of different factors on the rate of extraction , orthogonal experiment was designed and conducted , and ultimately determine the optimal experimental conditions : the solid-liquid mass ratio of 1:3 , the reaction temperature is 50 ℃, reaction time was 90min. Characterized by trial and testing , the main factors for the useful elements extraction rate changes on the level of theoretical analysis , test results and theoretical analysis. The nature of the extracted material and application are briefly described. Experimental and theoretical analysis shows that the formulated test technology is feasible , the technical route correctly , can achieve all of the red mud comprehensive recycling of useful components , and the entire recycling process produces no other wastes. The research results will follow in the pilot and industrial scale production with some guidance and reference.

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CLC: > Environmental science, safety science > Processing and comprehensive utilization of waste > Mining, metallurgical industry,waste disposal and comprehensive utilization > Metallurgical Industry > Nonferrous Metals Industry
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