Ammonium Chlorochromate in Solventless System Majid M. Heravi* and Maryam M. Aghayan Chemistry and Chemical Engineering Research Center of Iran. P.O. Box 14335-186, Teheran, Iran. Fax: 0098(21) 8037185, E-mail: [email protected] Z. Naturforsch. 54b, 815Ð817 (1999); received December 2, 1998 Oxidation, Alcohols, Carbonyl Compounds, Wet Alumina, Solventless System, Ammonium Chlorochromate A simp...

In the present study, prediction of Alumina recovery efficiency (A.R.E), the amount of produced red mud (A.P.R), red mud settling rate (R.S.R) and bound-soda losses (B.S.L) in Bayer process red mud has been carried out for the first time in the field. These predictions are based on Lime to bauxite ratio and chemical analyses of bauxite and lime as Bayer process feed materials. Radial basis func...

Optimisation of PM scheduling for multi-component systems – a simulated annealing approach Mohammad Doostparast a , Farhad Kolahan b & Mahdi Doostparast c a Iranian Oil Pipeline and Telecommunication Company (IOPTC) , Tehran , Iran b Department of Mechanical Engineering , Ferdowsi University of Mashhad , Mashhad , Iran c Department of Statistics, School of Mathematical Sciences , Ferdowsi Unive...

Optimisation of facility layout design problem with safety and environmental factors by stochastic DEA and simulation approach A. Azadeh, T. Nazari & H. Charkhand a School of Industrial and Systems Engineering and Center of Excellence for Intelligent Based Experimental Mechanics, University College of Engineering, University of Tehran, Tehran, Iran b HSE Department, National Petrochemical Compa...

Polymyxin B effects on motility parameters of cryopreserved bull semen Mojtaba Rashedi, Mohammad Hashem Fazeli, Hamid Gholami, Mohammad Bahreini Young Researchers and Elites Club, Faculty of Veterinary Medicine, Islamic Azad University, Shahrekord Branch, Shahrekord, Iran Department of Clinical Science, Faculty of Veterinary Science, Islamic Azad University, Shahrekord Branch, Shahrekord, Iran ...

Large-scale events such as COVID-19 show that there are situations that can lead to huge stress on health infrastructuresystems (HIS). The pandemic reveals that it is very difficult to protect HIS from all kinds of possible hazards. Considerthe trend of these types of viruses, such as N1H1, SARS and Ebola. These types of hazards could be more frequentand extreme in the future....

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, Tash, and Shirin Cheshmeh baux...