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Joint effect of parameters of hydrochemical nepheline processing on alumina |
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| Authors: | V G Kazakov V A Lipin V A Matveev D V Maiorov V N Korovin |
| Institution: | 1. St. Petersburg State Technological University of Plant Polymers, St. Petersburg, Russia 2. St. Petersburg State Polytechnical University, St. Petersburg, Russia 3. Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw, Kola Scientific Center, Russian Academy of Sciences, Apatity, Russia |
| Abstract: | A scheme of nepheline processing by a hydrochemical method was technically justified. In this process, silica is transformed into calcium hydrosilicate under autoclave conditions at a low concentration of caustic alkali. This allows the process at high heat regeneration and low steam flow for evaporation of a solution. A joint effect of temperature, leaching time, and concentration of caustic alkali solution was examined on an alumina recovery. Experiments were designed using a combined rotatable design of a second order. |
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