OPTIMIZATION OF NICKEL EXTRACTION FROM LATERITIC ORE IN HYDROCHLORIC ACID SOLUTION WITH HYDROGEN PEROXIDE BY TAGUCHI METHOD

Öz

Taguchi optimization method was used to determine optimum conditions for the extraction of nickel from lateritic ore in hydrochloric acid solution with hydrogen peroxide. Leaching time, stirring speed, temperature, hydrochloric acid concentration and hydrogen peroxide concentration were chosen as parameters. The optimum conditions for dissolution were found as leaching time of 240 min, a temperature of 70°C, hydrochloric acid concentration of 3 M, hydrogen peroxide concentration of 0.1 M and without stirring. The experimental results under optimum leaching conditions, showed that the extraction of nickel from lateritic ore was 90.66%. Analysis of variance (ANOVA) was applied to experimental results. Percentage contributions of each factor for the extraction of nickel were determined.

Anahtar Kelimeler

• Leaching
• Lateritic ore
• Nickel; Hydrochloric acid
• Hydrogen peroxide

Nikelin Lateritik Cevherden Hidrojen Peroksitli Hidroklorik Asit Çözeltisinde Çözündürülmesinin Taguchi Yöntemiyle Optimizasyonu

Öz

Nikelin lateritik cevherden hidrojen peroksitli hidroklorik asit çözeltisinde çözündürülmesinin optimum koşullarını belirlemek için Taguchi optimizasyon yöntemi kullanılmıştır. Deney parametreleri olarak, süre, karıştırma hızı, sıcaklık, hidroklorik asit derişimi ve hidrojen peroksit derişimi seçilmiştir. Çözündürme için optimum koşullar, karıştırma yapılmadan, 240 dakika liç süresi, 70 °C sıcaklık, 3 M hidroklorik asit derişimi ve 0.1 M hidrojen peroksit derişimi olarak bulunmuştur. Optimum koşullarda yapılan deney sonuçları, nikelin lateritik cevherden çözündürülmesinin %90.66 olduğunu göstermiştir. Deney sonuçlarına varyans analizi (ANOVA) uygulanmış ve her faktörün nikel çözündürülmesine olan katkısı belirlenmiştir.

Anahtar Kelimeler

• Liç
• Lateritik cevher
• Nikel; Hidroklorik asit
• Hidrojen peroksit
• Taguchi metodu

Kaynakça

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