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| 1 | Mineralogical and sink-float studies of Jajarm low-grade bauxite显示文摘Jajarm's bauxite deposits are mainly diasporic,and they have a low mass ratio of Al2O3/SiO2. It is necessary to increase the run-of-mine mass ratio before feeding the material to the Bayer process. Chemical analysis indicated that the low-grade bauxite sample from Jajarm contained 43.9wt% Al2O3 and 13.35wt% SiO2, resulting in a mass ratio of 3.29. According to mineralogical studies, the presence of aluminosilicate minerals such as kaolinite, illite, and quartz was the main reason for the decrease of the mass ratio. Microscopic observations revealed that, with the size reduction from -1000+710 to -38 μm, the liberation degree of diaspore increased from 10% to 60%, and that of aluminosilicates increased from 20% to 85%. Heavy liquids with the densities of 2.8, 3.0, 3.2, and 3.4 g/cm3 were used to evaluate the heavy media separation in three sizes, i.e., -3350+710, -710+212, and -212+125 μm. Laboratory studies confirm that the density of 3.2 g/cm3 can produce the concentrates (in sunk fractions) with recoveries of 89.09%, 91.24%, and 84.68% with the Al2O3/SiO2 mass ratios of 5.03, 5.16, and 5.15 for the ?3350+710, ?710+212, and ?212+125 μm sizes, respectively. | Mohammad Zarbayani Esmaeil Jorjani Mirsaleh Mirmohammadi Mohammad Taghi Shadloo Mohammad Noaparast | 2010 | International Journal of Minerals,Metallurgy and Materials2010，17，3： | 8 |
| 2 | Bonded-particle model calibration using response surface methodology显示文摘 | Sajjad Chehreghani Mohammad Noaparast Bahram Rezai Sied Ziaedin Shafaei | 2017 | Particuology2017，15，3： | 6 |
| 3 | 采用响应面方法和中心复合旋转设计对低品位锰矿浸出过程建模与优化(英文)显示文摘采用实验设计软件对从低品位锰矿中浸出提取锰的过程进行优化。在中心复合响应面实验设计中,考察了4个主要影响浸出过程的参数,即硫酸浓度、草酸浓度、浸出时间和温度。将锰和铁的浸出率作为考察指标。采用统计分析和方差分析确定了最优条件,即最高的锰和铁浸出率、最短的浸出时间和最低的温度。结果表明,硫酸浓度是影响浸出过程的最显著的参数,在最优条件下:硫酸浓度7%,草酸浓度42.5g/L,浸出时间60min,反应温度65℃,锰和铁的浸出率可分别达到93.44%和15.72%。 | Dariush AZIZI Sied Ziaedin SHAFAEI Mohammad NOAPARAST Hadi ABDOLLAHI | 2012 | Transactions of Nonferrous Metals Society of China2012，22，9： | 5 |
| 4 | Removal of copper from molybdenite concentrate by mesophilic and extreme thermophilic microorganisms显示文摘Mixed mesophilic and extreme thermophilic bioleaching were evaluated to remove copper from the molybdenite concentrate.Bioleaching tests were carried out in shake flasks and in a 50-L bioreactor.The shake flask tests were performed with different inoculum size,solids density,pH.and temperature in order to identify optimum conditions.The highest amount of copper elimination,75%was obtained with extreme thermophilic microorganisms(at 12%inoculation,10%solids,65℃and a pH of 1.5).The highest copper elimination by mesophilic microorganisms was 55%(at 12%inoculation,5%solids,30℃at pH 2).The optimum conditions in shake flask tests were applied to 7 days batch tests in a50-L bioreactor.Extreme thermophilic experiment gave the best copper elimination of 60%(at 12%inoculation,10%solids,65℃and pH 1.5).Mesophilic test removed 50%of the copper(at 12%inoculation,10%solids,35℃at pH 2). | Abdollahi Hadi Manafi Zahra Shafaei Sied Ziaedin Noaparast Mohammad Manafi Moorkani Navid | 2013 | International Journal of Mining Science and Technology2013，23，6： | 4 |
| 5 | Modeling the effects of ore properties on water recovery in the thickening process显示文摘A better understanding of solid-liquid separation would assist in improving the thickening performance and perhaps water recovery as well. The present work aimed to develop an empirical model to study the effects of ore properties on the thickening process based on pilot tests using a column. A hydro-cyclone was used to prepare the required samples for the experiments. The model significantly predicted the experimental underflow solid content using a regression equation at a given solid flux and bed level for different samples, indicating that ore properties are the effective parameters in the thickening process. This work confirmed that the water recovery would be increased about 5% by separating the feed into two parts, overflow and underflow, and introducing two different thickeners into them separately. This is duo to the fact that thickeners are limited by permeability and compressibility in operating conditions. | Majid Unesi Mohammad Noaparast Seiyd Ziaedin Shafaei Esmaeil Jorjani | 2014 | International Journal of Minerals,Metallurgy and Materials2014，21，9： | 4 |
| 6 | Germanium separation and purification by leaching and precipitation显示文摘In this research work, extraction and purification of germanium from zinc leach residues(ZLR) were investigated. The results of ICP, XRF, and atomic adsorption spectroscopy(AAS) tests show that contents of germanium, iron, lead, and zinc within the leaching residue were 105×10^(-6), 3.53%, 10.35%, and 8.8%, respectively. XRD results indicate that the main minerals were in different forms of sulfates(CaSO_4·2H_2O, PbSO_4 and ZnSO_4·6H__2O), silicate(SiO_2), and oxide(Fe_2O_3). Dissolution of leaching filter cake was carried out using 5 parameters and each in 4 levels(acid concentration, temperature, time, liquid-to-solid ratio, and stirring speed) by Taguchi method(L_(16)), and then optimization of the effective parameters by response surface method. Under optimum conditions, zinc and germanium dissolution efficiencies were 88.71% and 8%, respectively. Leaching tests with sulfuric acid(added di-ammonium oxalate monohydrate) and hydrochloric acid(HCl) on the residues obtained from previous-stage sulfuric acid dissolution, yielded germanium and iron recoveries of 83%, 88%, 40%, and 90%, respectively. Thus, leaching experiment with sulfuric acid(added di-ammonium oxalate monohydrate) was superior to that with hydrochloric acid due to high and low extraction amounts of germanium and iron, respectively. Precipitation experiments revealed that germanium purification with tannic acid presented a better result compared to sodium hydroxide and ammonia. Under optimum conditions, contents of germanium and iron in the solution after precipitation were 0.1505% and 14.7% with precipitation yields of 91% and 52%, respectively. | Saeid Bayat Sajjad Aghazadeh Mohammad Noaparast Mahdi Gharabaghi Behrooz Taheri | 2016 | Journal of Central South University2016，23，9： | 3 |
| 7 | Nickel extraction from low grade laterite by agitation leaching at atmospheric pressure显示文摘This research work deals with the extraction of nickel from a low grade nickel laterite ore, taken from a deposit located in southwestern of Iran, through agitation leaching at atmospheric pressure. The assaying and mineralogical studies carried out on the nickel laterite sample, showed the 0.88% Ni, and principally consisted of oxide and silicate crystalline phases i.e. dolomite, quartz, magnetite, and goethite. Among numerous factors affecting such process, four major parameters i.e. temperature, agitator speed(r/min), leaching agents and their concentration were considered in a two-level full factorial experimental design. The agitation leach tests showed that the ore could be leached at atmospheric pressure with sulfuric acid while citric acid was almost unpromising. Analysis of variance(ANOVA) using DX7 software was employed to identify effective parameters. Sulfuric acid concentration and temperature were the most effective parameters on Ni extraction. Furthermore, the factorial models for experiment responses were developed. The results showed 83% Ni extraction after 4 h leaching, under optimized conditions i.e.temperature at 95 ℃, acid concentration at 5 N and agitator speed at 1000 r/min. This study revealed that factorial experimental design can be implemented to identify effective parameters on the agitation leaching process of nickel laterite. | Fatahi Mohammadreza Noaparast Mohammad Shafaei Seyyed Ziaeddin | 2014 | International Journal of Mining Science and Technology2014，24，4： | 3 |
| 8 | Recovery of coal particles from a tailing dam for environmental protection and economical beneficiations显示文摘 | M. Asghari M. Noaparast S. Z. Shafaie S. Ghassa S. Chehreh Chelgani | 2018 | International Journal of Coal Science & Technology2018，5，2： | 2 |
| 9 | Bioleaching of sphalerite sample from Kooshk leadizinc tailing dam 显示文摘 | Mehrabani J V Shafaei S Z Noaparast M | 2013 | Transactions of Nonferrous Metals Society of Chian2013，23，12： | 1 |
| 10 | Mesophilic and thermophilic bioIeaching of copper from a chalcopyrite-containing molybdenite concentrate显示文摘 | Abdollahi H Shafaei S Z Noaparast M | 2014 | Int J Miner Process2014，128，1： | 1 |
| 11 | A HER2-targeted RNA aptamer molecule labeled with gmTc for single-photon imaging in malignant tumors显示文摘 | Varmira K Hosseinimehr S J Noaparast Z | 2013 | Nucl Med Biol2013，40，8： | 1 |
| 12 | Process optimization and modeling of sphalerite flotation from a low-grade Zn-Pb using response surface methodology 显示文摘 | MEHRABANI J V NOAPARAST M MOUSAVI S M DEHGHAN R GHORBANI A | 2010 | Separation & Purification Technology2010，27，： | 1 |
| 13 | Depression of pyrite in the flotation of high pyrite low-grade lead-zinc ore using Aeidithiobaeillus ferrooxidans 显示文摘 | Mehrabani J V Noaparast M Mousavi S M Dehghan R Rasooli E Hajizadeh H | 2010 | Minerals Engineer- ing2010，23，1： | 1 |
| 14 | Adsorption of vanadium(V) from acidic solutions by using octylamine functionalized magnetite nanoparticles as a novel adsorbent显示文摘 | Masoome Parijaee Mohammad Noaparast Kamal Saberyan Sayyed Ziaadin Shafaie-Tonkaboni | 2014 | Korean Journal of Chemical Engineering2014，，12： | 1 |
| 15 | A reviewof the beneficiation of calcareous phosphate ores using organic acid leaching显示文摘 | Mahdi Gharabaghi Mehdi Irannajad Mohammad Noaparast | 2010 | Hydrometallurgy2010，103，： | 1 |
| 16 | Bioflotation of Sarcheshmeh copper ore using Thiobacillus ferrooxidans bacteria 显示文摘 | HOSSEINI T R KOLAHDOOZAN M TABATABAEI Y S M OLIAZADEH M NOAPARAST M ESLAMI A MANAFI Z ALFANTAZI A | 2005 | Miner Eng2005，18，： | 1 |
| 17 | A review ofthe beneficiation of calcareous phosphate ores usingorganic acid leaching显示文摘 | Gharabaghi M Irannajad M Noaparast M | 2010 | Hydrometallurgy2010，103，96： | 1 |
| 18 | A review of the beneficiation of calcareous phosphate ores using organic acid leaching显示文摘 | Gharabaghi M Irannajad M Noaparast M | 2010 | Hydrometallurgy2010，103，： | 1 |
| 19 | Application of response surface method and central composite design for modeling and optimization of gold and silver recovery in cyanidation process显示文摘 | KARIMI P ABDOLLAHI H ASLAN N NOAPARAST M SHAFAEI S Z | | 0，，01： | 1 |
| 20 | Double reverse flotation of a very low grade sedimentaryphosphate rock rich in carbonate and silicate显示文摘 | Mohammadkhani M Noaparast M Shafaei S Z | 2011 | International Journal of Mineral Processing2011，100，： | 1 |
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