​

​

Base metals & gold industries

​

• Literature review of “Gold leaching from ores using biogenic lixiviants”. 

• Indirect bioleaching in the heap leach No.1 of the Sarcheshmeh copper mine. 

• Formation of jarosite and its effect on important ions for Acidithiobacillus ferrooxidans bacteria, Sarcheshmeh low-grade copper ore. 

• Bioleaching of Sarcheshmeh copper flotation concentrate. 

• Chloride leaching of Sarcheshmeh copper flotation concentrate. 

• Optimization of reagent dosages in the rougher flotation circuit of the Sungun copper concentrator plant to increase copper recovery. 

• Bioleaching of Talmesi poly-metal (Cu, Co, Ni) ore.

• Occurrence mechanism of silicate and aluminosilicate minerals in Sarcheshmeh copper flotation concentrate. 

• Leaching of Co, Ni and Zn from Zarin Rooy cold filter cake residue.

• Optimization of flotation variables to decrease aluminum oxide and silicon dioxide in the copper-molybdenum flotation concentrate at the Sarcheshmeh mine. 

• Effects of soluble ions in the chloride leach solution on the leaching of lead from the cake residue of the zinc hydrometallurgical process. 

• Optimization of gold cyanidation (Sebandoon ore sample). 

• Optimization of flotation variables for Ravang (Block No. C) zinc and lead ore sample. 

• Literature review of “Challenges with elemental sulfur removal during the leaching of copper and zinc sulfides, and in the residues”.

• Literature review of “Hydrometallurgical Processing of Non-Sulfide Zinc Ores”. 

• Modeling of Al2O3 leaching recovery in the Bayer process (Jajarm alumina plant). 

• Beneficiation of Jajarm low-grade bauxite using gravity separation techniques and flotation. 

• Process review of “Razgah nepheline syenite alumina production EPCM project”. 

​

Rare Earth Elements & Niobium industries

​

• Rare earth elements R&D gaps analysis for the development of Canadian deposits, 2016. in Collaboration with Queen's University.

• Rare Earth Elements distribution in products of the Chadormalu Iron Ore Concentrator Plant. 

• Leaching of rare earth elements from Chadormalu apatite concentrate (laboratory scale). 

• Production of rare earth elements from apatite leach liquor using tributyl phosphate (TBP) extraction and precipitation stripping using oxalic acid. 

• Study of the surface chemistry of niobium and rare earth minerals by using XPS, TOF-SIMS, and SEM-EDX (Niobec plant). 

• Separation of pyrochlore from other minerals by flotation (Niobec plant). 

 

Iron, Graphite & Coal Industries

​

• Mathematical modeling to predict the properties of coal (Hardgrove Grindability Index (HGI),  and Free Swelling Index (FSI)) based on the analyses of U.S. coals.

• Mathematical modeling to predict the properties of coal (Calorific Value (CV), and Ash Fusion Temperatures (AFTs)) based on the analyses of U.S. coals. 

• Determination of different forms of organic and inorganic sulfur in Tabas coal samples.

• Evaluation of the effects of irradiation (ultrasound and microwave) on organic sulfur functionalities in coal using Atmospheric Pressure - Temperature Program Reduction.

• Distributions of coal group macerals in different size fractions and their effect on a flotation system (Central Alborz coal mine). 

• Production of ultra clean coal from concentrates produced at the Tabas and Central Alborz coal preparation plants using sequential leaching with HF followed by  HNO3 .

• Beneficiation of Jalal Abad iron ore (ore type No. D2). 

• Process review for the Sangan Iron Ore EPCM project. 

• Literature review of “graphite beneficiation techniques”. 

• Roasting and leaching of Woxana graphite to decrease sulfur and iron content to less than 0.5%. 

 

Potash industry

​

• Extraction of KCl from Carnallite with a high concentration of sodium chloride as an impurity using decomposition-direct flotation.