Volume 13 (2022)
Volume 12 (2021)
Volume 11 (2020)
Volume 10 (2019)
Volume 9 (2018)
Volume 8 (2017)
Volume 7 (2016)
Volume 6 (2015)
Volume 5 (2014)
Volume 4 (2013)
Volume 3 (2012)
Volume 2 (2011)
Volume 1 (2010)
Alumina Extraction by Lime-soda Sinter Process from Low-grade Bauxite Soil of Semirom Mine

Elahe Ghaemmaghami; Mohamad Reza Samadzadeh Yazdi; Mohammad Amin Darvishi; Ali akbar Sadati; Abbas Najafi

Volume 13, Issue 4 , October 2022, , Pages 1159-1169


  As the mass ratio of alumina to silica (A/S ratio) in bauxite decreases, the cost of alumina production by the Bayer process sharply increases. With the increasingly fierce competition in the alumina industry and the gradual reduction in bauxite grade, when the A/S ratio drops to 3-4, the Bayer process ...  Read More

Mineral Processing
Modelling and optimization of digestion efficiency of bauxite in Bayer process: Iran Alumina company

M. R. Khani; M. Karamoozian

Volume 10, Issue 3 , July 2019, , Pages 799-809


  In the present work, we investigated and optimized the digestion efficiency, A/S (Al2O3/SiO2 in red mud), and N/S (Na2O/SiO2 in red mud) of mixed bauxite in Iran Alumina Company using the Bayer process. Digestion experiments were carried out in an induction rotary autoclave on a mix of Jajarm, Yazd, ...  Read More

Investigation of parameters affecting desilication of diasporic bauxite in Jajarm mine by thermo-chemical treatment

M. Rezaee Rad; Sh. Shahhoseini; M. Janfada; H. A. Mirzaee; P. Kelidari

Volume 8, Issue 1 , January 2017, , Pages 75-81


  Low grade diasporic bauxite in the Jajarm mine with an A/S (Al2O3/SiO2) ratio of 2.3 is not usable in the Bayer process at Jajarm Alumina Complex. Due to the severe interlocking effect between the diaspore and aluminosilicate minerals (Chamosite and Kaolinite) and iron-containing minerals in a microcrystal ...  Read More

Iron leaching from bauxite ore in hydrochloric acid using response surface methodology

soghra salehi; M. Noaparast; S.Z. Shafaei; A. Amini; A. Heidarnia

Volume 6, Issue 1 , January 2015, , Pages 103-108


  In this work, hydrochloric acid is used to remove iron impurities in the bauxite ore contained in the diasporite mineral located in the Sari region. The bauxite ore was calcined at different temperatures and times, and then dissolved in a hydrochloric acid solution. After determining the optimum calcination ...  Read More