scholarly journals Recovery of Cassiterite and Topaz Minerals from an Old Metallurgical Dump, Eastern Desert of Egypt

2021 ◽  
Author(s):  
Suzan Sami Ibrahim ◽  
Ayman Hagrass ◽  
khaled Yassin ◽  
Wael Fathy ◽  
Tawfik Boulos
Keyword(s):  
Size Fraction ◽  
Eastern Desert ◽  
Shaking Table ◽  
Flow Sheet ◽  
Mathematical Approach ◽  
Statistical System ◽  
Magnetic Separator ◽  
Belt Speed ◽  
Tailing Dumps ◽  
Working Parameters

Abstract Huge amounts of tailing dumps as a result of mines’ blasting operations were impacting both economical and environmental problems. This issue was in serious need to be treated with suitable solutions. Evaluation of one of these tailing dumps in the Eastern Desert of Egypt showed the presence of reasonable amount of cassiterite mineral reaching 0.199%. The mineral was found as finely disseminated particulates within varieties of quartz-feldspar-hornblende-biotite granitic formations. In the present study, the processing regime relied upon the synergy between reaching liberation size, and mineral over grinding due to its extreme brittleness. However, delicate grinding via attrition scrubbing was adopted to produce − 0.51 + 0.074 mm attrition product with fine fractions, reaching 62.31% and 37.59%, respectively. The recovery of cassiterite from the − 0.50 + 0.074 mm size fraction was accomplished by the physical difference between mother granitic formations that shielded the mineral grains. Under these conditions, joint shaking table/dry high intensity magnetic separation techniques were conducted to recover cassiterite mineral. The CCD statistical system was used as a mathematical approach to optimize the effect of the main working parameters of the magnetic separator, i.e., splitter inclination angle, and belt speed, and their interactions on the cassiterite recovery of the final concentrate. The suggested flow sheet succeeded to recover cassiterite mineral with a grade reaching 11.25% SnO2 with 94.08% operational recovery from a feed contained 0.19% SnO2. These results are highly imperative to achieve applicable processing flow-sheet of such kind of minerals’ secondary resources.

Beneficiation and Separation of Egyptian Tantalite Ore

2020 ◽  
Vol 835 ◽  
pp. 208-213
Author(s):  
El-Sayed R.E. Hassan ◽  
Fabrice Mutelet ◽  
Nagui A. Abdel-Khalek ◽  
Mohamed A. Youssef ◽  
Mahmoud M. Abdallah ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Cell Phones ◽  
Eastern Desert ◽  
Consumer Products ◽  
Shaking Table ◽  
Enrichment Ratio ◽  
High Tech ◽  
Aliquat 336 ◽  
Magnetic Separator ◽  
Industrial Materials

The demand for tantalum and niobium has increased steadily due to their importance in the production of modern industrial materials and high tech consumer products such as super alloys and cell phones. This work aims at recovery of tantalum and niobium from Abu Dabbab deposits at the Eastern Desert of Egypt. The beneficiation was successfully performed using shaking table concentrator and carpco magnetic separator. The enrichment ratio reached up to 160-times for both Ta2O5 and Nb2O5. Aliquat 336 ionic liquid was used for separating Ta2O5 with purity of 90%. Amberlite anion exchanger was used for separating Nb2O5 with purity of 87%.

Enrichment of a Nigerian chromite ore for metallurgical application by dense medium flotation and magnetic separation

2019 ◽  
Vol 116 (3) ◽  
pp. 324 ◽  
Author(s):  
Kuranga Ibrahim Ayinla ◽  
Alafara Abdullahi Baba ◽  
Bankim Chandra Tripathy ◽  
Malay Kumar Ghosh ◽  
Rajan Kumar Dwari ◽  
...  
Keyword(s):  
Particle Size ◽  
Magnetic Separation ◽  
Organic Liquid ◽  
Size Fraction ◽  
Dense Medium ◽  
Chromium Alloy ◽  
Magnetic Separator ◽  
Electro Deposition ◽  
Chromite Ore ◽  
Wet Chemical

This study, focused on the beneficiation of a Nigerian complex chromite ore sourced from Tunga-Kaduka, Anka Local Government of Zamfara State, Nigeria, assaying 45.85% Cr2O4 and 54.15% mineral impurities, was enriched concurrently through sink floatation and magnetic separation techniques. The chromite ore initially analyzed to contain silicate impurities was found not suitable for metallurgical purposes. Thus, enrichment was examined through gravity separation studies using organic liquid with different specific gravities at 2.8, 3.3, and 4.0. The separation of chromite ore with lowest particle size fraction was done using Mozley mineral separator followed by the magnetic separation of the sink product by magnetic separator. The results obtained revealed about 77% of the total material containing 300 μm particle size, 52% ˂ 212 μm and 17% below 75 μm. Subsequent analysis of the beneficiated ore was carried out by wet chemical analysis and atomic absorption spectrophotometer. The results showed that Cr2O4 content increased to 78.34% from initial 45.83% with maximum Cr:Fe ratio of 3.2:1, representing 84.27% of chromium metal present in the ore. The enrichment of Cr2O4 obtained in this study could be found metallurgically applicable in the electro-deposition and ferro-chromium alloy production practices.

scholarly journals Physical separation for upgradation of valuable minerals: a study on sands of the Someswari river

2015 ◽  
Vol 50 (1) ◽  
pp. 53-58 ◽  
Author(s):  
MA Rahman ◽  
MN Zaman ◽  
PK Biswas ◽  
S Sultana ◽  
PK Nandy
Keyword(s):  
Separation Method ◽  
Shaking Table ◽  
Heavy Minerals ◽  
Grain Size Analysis ◽  
Size Analysis ◽  
Magnetic Separator ◽  
Physical Separation ◽  
Iron Coating ◽  
Light Mineral ◽  
Plate Separator

The study is carried out to develop a physical separation method for upgradation of valuable minerals from sands of the Someswari River. Understanding the morphology and mineralogy of the heavy minerals may allow development of processing methods that produce the higher grade products. For this purpose, grain size analysis, microscopic, spectroscopic study and feasibility of physical separation by shaking table, electrostatic plate separator and induced roll magnetic separator have been done. Considering the huge quantity of sandy materials of the studied river sands and separation of heavy minerals magnetite, ilmenite and garnet from the bulk sands and further treatment of the light mineral quartz to remove iron coating could be use as glass-sands; either the light mineral quartz or heavy minerals will be the main product. From the overall study by physical separation method, the Someswari River is identified as potential resources for mineral processing.Bangladesh J. Sci. Ind. Res. 50(1), 53-58, 2015

scholarly journals Phase, Microstructural Characterization and Beneficiation of Iron Ore by Shaking Table

2021 ◽  
Vol 64 (1) ◽  
pp. 19-25
Author(s):  
Sajad Ali ◽  
Fahad Nawaz ◽  
Yaseen Iqbal
Keyword(s):  
Iron Oxide ◽  
Chemical Composition ◽  
Iron Ore ◽  
Microstructural Characterization ◽  
Xrd Analysis ◽  
Shaking Table ◽  
Minor Phase ◽  
Magnetic Separator ◽  
Major Phase ◽  
Magnetic Nature

To know about the nature of gangue associated with the ores, characterization has become an integral part in mineral processing and beneficiation, therefore, the as-mined iron ore collected from Karak region of KP has been characterized for its phase, microstructure and chemical composition via XRD, SEM and EDS respectively. Beneficiation of the iron ore has been carried out by shaking table and magnetic separator. XRD analysis confirmed the presence of iron oxide (Fe203) as the major phase along with quartz (Si02) as the minor phase. Finely grinded iron ore powder of 100 (149 µm) and 200 (74 µm) mesh sizes were passed via shaking table and magnetic separator subsequently. The iron ore was successfully upgraded from 28.27 wt.% to 36.51 wt.% at 100 mesh and 38.70 wt.% at 200 mesh via shaking table, thus achieving a maximum of 10% upgraded iron ore. The magnetic separator did not become so effective due to non- magnetic nature of hematite.    

scholarly journals Heavy Mineral Sands in Brazil: Deposits, Characteristics, and Extraction Potential of Selected Areas

Minerals ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 176 ◽  
Author(s):  
Caroline Gonçalves ◽  
Paulo Braga
Keyword(s):  
Inductively Coupled Plasma ◽  
Coastal Region ◽  
Optical Emission ◽  
Heavy Mineral ◽  
Shaking Table ◽  
Heavy Minerals ◽  
Emission Spectrometry ◽  
Magnetic Separator ◽  
X Ray ◽  
Accessible Information

In Brazil, heavy mineral sand deposits are still barely exploited, despite some references to Brazilian reserves and ilmenite concentrate production. The goal of this project is to characterize and investigate the potential recovery of heavy minerals from selected Brazilian placer occurrences. Two areas of the coastal region were chosen, in Piaui state and in Bahia Provinces. In all samples, the heavy minerals of interest (ilmenite, monazite, rutile, and zircon) were identified by scanning electron microscopy (SEM) and X-ray diffraction (XRD) techniques and also quantified by X-ray fluorescence spectrometry (XRF) and Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES). The total heavy minerals (THM) in the Piaui samples were 6.45% and 10.14% THM, while the figure for the Bahia sample was 3.4% THM. The recovery test of the Bahia sample, using only physical separation equipment such as a shaking table and magnetic separator, showed valuable metallurgical recoveries at around or greater than 70% for each stage, and the final concentrate of pure ilmenite was composed of up to 60.0% titanium dioxide after the differential magnetic separation. Another aim is to compile accessible information about Brazilian heavy mineral main deposits complemented with a short economic overview.

scholarly journals Characterization of the sand of Brahmaputra river of Bangladesh

2012 ◽  
Vol 47 (2) ◽  
pp. 167-172 ◽  
Author(s):  
Md Aminur Rahmanb ◽  
Pradip Kumar Biswasb ◽  
Mohammad Nazim Zamanb ◽  
Md Yunus Miah ◽  
Tofazzal Hossain ◽  
...  
Keyword(s):  
Relative Proportion ◽  
Size Fraction ◽  
Heavy Minerals ◽  
Magnetic Fraction ◽  
X Ray Diffraction ◽  
Brahmaputra River ◽  
Magnetic Separator ◽  
X Ray ◽  
Mineral Assessment

The aim of this paper is to study on the mineralogy, morphology, magnetic property and composition of the sand of Brahmaputra River, Bangladesh. The sand has been collected from randomly selected seven places and separated by High Intensity Rolling Magnetic Separator  into three fractions, viz. magnetic, para-magnetic and non-magnetic parts. The identifications of the valuable heavy minerals existing in these fractions have been performed. The valuable heavy minerals in the separated fractions have been counted under reflected and polarizing microscope and it is found that the magnetic fraction contains ilmenite, magnetite and garnet. The major grain size fraction of the magnetic fraction is 125 - 250 ?m (57.18%). Zircon, rutile, xenotime, monazite, sillimanite etc. have been counted in other two fractions. X-ray Diffraction (XRD), X-ray Fluorescence (XRF) and Isodynamic Separator have been applied for mineral assessment and to quantify the relative proportion of mineral species.   DOI: http://dx.doi.org/10.3329/bjsir.v47i2.11448   Bangladesh J. Sci. Ind. Res. 47(2), 167-172, 2012  

scholarly journals Physical processing for polymetallic mineralization of Abu Rusheid mylonitic rocks, South Eastern Desert of Egypt

2021 ◽  
Author(s):  
Mona M. Fawzy ◽  
Mohamed S. Kamar ◽  
Gehad M. Saleh
Keyword(s):  
Mineral Content ◽  
Eastern Desert ◽  
Raw Material ◽  
Flow Sheet ◽  
Base Metals ◽  
Sulphide Minerals ◽  
Physical Processing ◽  
Polymetallic Mineralization ◽  
Set Up ◽  
Industrial Economic

AbstractIn this study, the mineralogical content of Abu Rusheid mylonite sample was investigated and revealed that the sample is essentially composed of quartz and feldspar (72.14% mass), muscovite (16.6% mass), and contains heavy economic polymetallic minerals of about 2.65% by mass. By studying the differences in the physical properties of this mineral content, a proposed flow sheet was set up to explain the successive physical upgrading steps for concentrating and separating the valuable minerals content and getting rid of the associated gangue minerals. Industrial, economic and strategic polymetallic minerals were identified at Abu Rusheid mylonite sample, including cassiterite, titanite, brass, kasolite, monazite, and uranothorite. A group of sulfide minerals also existed as pyrite, arsenopyrite, galena, and molybdenite in addition to the presence of fluorite and iron oxides bearing rare earth elements (REEs) and base metals. Using dry high intensity magnetic separation followed by wet gravity separation and flotation, three concentrates were obtained; heavy paramagnetic concentrate (monazite, columbite, brass, and jarosite), heavy diamagnetic concentrate (zircon, kasolite, uranothorite, cassiterite, and sulphide minerals) and muscovite concentrate for industrial uses. Physical processing of Abu Rusheid mylonite sample was carried out to produce high grade mineral concentrate used as a raw material for chemical treatment to extract economic elements that necessary for several industries.

A light optical diffractometer for electron microscopical images operating in line

1978 ◽  
Vol 36 (1) ◽  
pp. 86-87
Author(s):  
P. Bonhomme ◽  
A. Beorchia
Keyword(s):  
Electron Microscopy ◽  
Electron Transfer ◽  
Electron Microscope ◽  
Image Converter ◽  
Coherent Light ◽  
Spatial Filters ◽  
Electron Image ◽  
Electron Microscopical ◽  
Working Parameters ◽  
Amorphous Part

We have already described (1.2.3) a device using a pockel's effect light valve as a microscopical electron image converter. This converter can be read out with incoherent or coherent light. In the last case we can set in line with the converter an optical diffractometer. Now, electron microscopy developments have pointed out different advantages of diffractometry. Indeed diffractogram of an image of a thin amorphous part of a specimen gives information about electron transfer function and a single look at a diffractogram informs on focus, drift, residual astigmatism, and after standardizing, on periods resolved (4.5.6). These informations are obvious from diffractogram but are usualy obtained from a micrograph, so that a correction of electron microscope parameters cannot be realized before recording the micrograph. Diffractometer allows also processing of images by setting spatial filters in diffractogram plane (7) or by reconstruction of Fraunhofer image (8). Using Electrotitus read out with coherent light and fitted to a diffractometer; all these possibilities may be realized in pseudoreal time, so that working parameters may be optimally adjusted before recording a micrograph or before processing an image.

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