scholarly journals Beneficiation of Talc-Magnesite Ore with Cu-Co Mineralization

2021 ◽  
Vol 1 (1) ◽  
Author(s):  
Ivan BREZÁNI ◽  
Martin SISOL ◽  
Michal MARCIN ◽  
Maroš SÝKORA ◽  
Michal MAŤAŠOVSKÝ ◽  
...  
Keyword(s):  
Magnetic Separation ◽  
Froth Flotation ◽  
Gravity Separation ◽  
Shaking Table ◽  
Raw Material ◽  
Electrostatic Separation ◽  
Accessory Minerals ◽  
Size Fractions ◽  
Preliminary Results ◽  
Flotation Cell

Magnesite ore with a low chalcopyrite – cobaltite mineralization was subjected to a series of separations designed to evaluate thepossible concentration of the two accessory minerals. Although the Cu-Co grade in the ore (> 0.01% Co, > 0.1% Cu) is significantlylower than the typical economic grades, content of the main valuable mineral for which the ore is mined and processed incombination with a listing of cobalt as a critical raw material, coupled with their higher price might compensate for the additionalbeneficiation stages. The ore was first crushed and subsequently classified to -100 μm and +100 -400 μm size fractions. The finefraction was upgraded by froth flotation processing in laboratory froth flotation cell. The coarser fraction was processed in severalseparation stages including gravity separation on shaking table, magnetic separation and corona electrostatic separation. The sameprocedure was also repeated with a higher-grade sample as a verification of the procedures. Preliminary results suggest that theaccessory minerals can be separated from the talc-magnesite ore and individual mineral concentrates with about 19% Co and 28%Cu were prepared. However, further work must be done to achieve desirable recoveries for the processing to be economically viable.

scholarly journals Possibilities of Tetrahedrite Separation from Polymetallic Ore

2020 ◽  
Vol 2 (1) ◽  
Author(s):  
Michal MARCIN ◽  
Martin SISOL ◽  
Peter VARGA ◽  
Ivan BREZÁNI ◽  
Michal MAŤAŠOVSKÝ ◽  
...  
Keyword(s):  
Froth Flotation ◽  
Gravity Separation ◽  
Shaking Table ◽  
Second Step ◽  
Flotation Column ◽  
Efficient Separation ◽  
Polymetallic Ore

Using the separation methods, the tetrahedrite concentrate, which contains multiple elements, was obtained from the tetrahedrite ore.We focused mainly on copper, but also on iron and antimony. Ore also contains undesirable elements such as arsenic or mercury. Theaim of this paper is an efficient separation of the utility components. Gravity separation and flotation was used. The first processingstep was gravity separation on shaking table the second step was froth flotation in flotation column.

scholarly journals Concentration of bauxite fines via froth flotation

2009 ◽  
Vol 62 (3) ◽  
pp. 271-276 ◽  
Author(s):  
Renata Salles Kurusu ◽  
Arthur Pinto Chaves ◽  
Christian Fonseca de Andrade ◽  
Claret Antônio Vidal Abreu
Keyword(s):  
Magnetic Separation ◽  
Froth Flotation ◽  
Minas Gerais ◽  
The State ◽  
Gravity Separation ◽  
Processing Plant ◽  
Bench Scale ◽  
Processing Plants ◽  
Poços De Caldas ◽  
New Processing

Companhia Brasileira de Alumínio (CBA) has bauxite processing plants at Poços de Caldas and Itamarati de Minas, and a new processing plant at Miraí that has been operating since June, 2008; all of them are in the State of Minas Gerais. The plants haveunits for the crushing, scrubbing and screening operations. The screened oversize is the concentrate or washed bauxite. At Itamarati de Minas, the fines are de-slimed and concentrated by gravity separation of the iron-titanium minerals in Reichert spirals followed by HIWMS. The tailings still contain bauxite, which can be separated by reverse froth flotation (flotation of the quartz and depression of the bauxite), using starch as a depressant and amine as a promoter; the pH must be around 10.0. The iron and titanium bearing minerals are depressed with the bauxite and an additional magnetic separation operation is necessary on the depressed bauxite. This paper describes the work performed on Itamarati de Minas samples on a bench scale at Escola Politécnica, University of S. Paulo.

Experimental Studies on a Mineral Containing Titanium in Baoding Area

2013 ◽  
Vol 826 ◽  
pp. 34-37 ◽  
Author(s):  
Guo Zhen Liu ◽  
Shu Juan Dai ◽  
Li Mei Bai ◽  
Yu Xin Ma ◽  
Yong Zhang
Keyword(s):  
Magnetic Separation ◽  
High Intensity ◽  
Ph Value ◽  
Experimental Studies ◽  
Mineral Processing ◽  
Shaking Table ◽  
Gravity Concentration

The main elements can be recovered for mineral processing in a mineral containing titanium of Baoding area were Ti, Fe and V, and the elements in the main gangue minerals were Si and Al. Gravity concentration, gravity concentration-high intensity magnetic separation and gravity concentration-flotation tests were performed on the ore sample respectively. The results showed that, in the test of shaking table, when the grinding fineness was -0.074mm 93%, the productivity of concentrate can reach 32.24%; when grinding fineness was -0.074mm 93%, after gravity concentration-magnetic separation, 30.25% of concentrate productivity can be attained; when the grinding fineness was -0.074mm 85%, after gravity concentration-flotation, the productivity of concentrate was 3.31%. Maybe it's the condition of the tests wasn't controlled well, especially adjusting pH value in the flotation stage, it's hard to control, so the results were not very good.

Beneficiation of Ilmenite in Yunnan Province

2014 ◽  
Vol 543-547 ◽  
pp. 3882-3885
Author(s):  
Xiao Feng Yang ◽  
Quan Jun Liu ◽  
Rong Dong Deng
Keyword(s):  
Magnetic Separation ◽  
Yunnan Province ◽  
Shaking Table

This paper studied the recovering of Fe and TiO2 minerals from a refractory ore in Yunnan province. The grade of Fe in raw ore is 27.25% and the grade of TiO2 in raw ore is 5.79%. Through technological mineralogy study, we found that the Fe was mainly in the forms of Hematite and limonite, and the Ti was mainly in the forms of ilmenite and anatase. Through the process of strong magnetic separation and shaking table separation, the minerals of Fe and Ti were recovered. Finally, we got two products. They were Fe concentrate with the grade of 44.30%, recovery of 62.65%, and Ti concentrate with the grade of 43.60%, recovery of 32.55%.

scholarly journals Paper Analyses of Tocharian manuscripts of the Pelliot Collection stored in the National Library of France (Bibliothèque nationale de France)

2020 ◽  
Vol 14 (3) ◽  
pp. 387-410
Author(s):  
Emilie Arnaud-Nguyen
Keyword(s):  
Central Asia ◽  
Manufacturing Process ◽  
Storage Conditions ◽  
Paper Analysis ◽  
Raw Material ◽  
National Library ◽  
Local Adaptations ◽  
Preliminary Results ◽  
Paper Manufacturing ◽  
The Many

This paper describes the preliminary results of my PhD research within the ERC pro­ject “HisTochText”. The aim is to perform macroscopic analyses of archaeological papers from the Pelliot Collection. They are stored in the National Library of France (Bibliothèque nationale de France). Most were discovered in the oasis kingdom of Kucha, inscribed in an ancient Indian writing, brāhmῑ. The language was unknown in France. Kucha was a meeting place for many influences both western and eastern, insofar as paper analysis seeks to determine technological influences and local adaptations. Macroscopic analyses rely on traces found in the material of the paper which may be the result of the many stages in the life of the document: the raw material, the manufacturing process, the conditions of use and the storage conditions, both ancient and modern. To this day 350 fragments have been observed. Little is known about papermaking in Central Asia. As a consequence, every shred of information must be examined in order to deter­mine the differences from and similarities to paper manufacturing in Xinjiang.

scholarly journals Characterization and Economic Potential of Historic Tailings from Gravity Separation: Implications from a Mine Waste Dump (Pb-Ag) in the Harz Mountains Mining District, Germany

Minerals ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 303 ◽  
Author(s):  
Kerstin Kuhn ◽  
Jeannet A. Meima
Keyword(s):  
Mine Waste ◽  
Froth Flotation ◽  
Economic Value ◽  
Gravity Separation ◽  
Mining District ◽  
Economic Potential ◽  
Waste Dump ◽  
Breakdown Spectroscopy ◽  
Mine Waste Dump ◽  
Drill Cores

In contrast to modern tailings from froth flotation, little is known about historic tailings from gravity separation. However, they may be of economic interest due to their higher metal grades compared to modern tailings. As an example for these types of historic tailings, the inner structure, as well as the economic potential (Pb, Zn, Cu, Ag, Sb), of the old Bergwerkswohlfahrt mine waste dump in Germany were studied. The investigations focused on textural, geochemical, and mineralogical properties. For this purpose, an extensive drilling program was undertaken. The drill cores were subsequently analyzed with a laser-induced breakdown spectroscopy (LIBS) core scanner to obtain the detailed spatial distribution of potentially valuable elements. The fine-sized residues could be differentiated into different layers, all of them including valuable metals in varying proportions. The strong variations in stratification and in metal distribution over short distances are caused by the batch-wise deposition of the tailings. This heterogeneity within short distances has to be taken into account for future exploration of these types of deposits. The application of a core scanner using LIBS is very convenient for detailed spatial analysis of drill cores, however, the calibration effort, particularly for heterogeneous sample material, is proportionally large. The valuable metal content for Bergwerkswohlfahrt was estimated to be 8000 metric tons of Pb and 610,000 ounces of Ag. Although of limited economic value, recycling might finance future remediation costs. Furthermore, the occurrence of historic tailings in nearby clusters may present further recycling opportunities.

scholarly journals State controllability of a froth flotation cell

2019 ◽  
Vol 52 (14) ◽  
pp. 54-59
Author(s):  
J.D. le Roux ◽  
I.K. Craig
Keyword(s):  
Froth Flotation ◽  
Flotation Cell

Mineralogical and chemical heterogeneity of three standard clay mineral samples

Clay Minerals ◽  
1996 ◽  
Vol 31 (3) ◽  
pp. 417-422 ◽  
Author(s):  
H. M. Köster
Keyword(s):  
Particle Size ◽  
Chemical Analysis ◽  
Clay Mineral ◽  
Chemical Heterogeneity ◽  
X Ray Diffraction ◽  
Accessory Minerals ◽  
Size Fractions ◽  
X Ray ◽  
Compositional Variations

AbstractMineralogical and chemical heterogeneity within three standard clay mineral samples have been identified by X-ray diffraction and chemical analysis of various size-fractions. This heterogeneity is partly attributed to accessory minerals, but mostly to structural and compositional variations in the 2:1 layer minerals of different particle size in the same specimen.

scholarly journals Obsidian from the Bronze Age Village of San Vincenzo, Stromboli, Aeolian Islands: A Preliminary Investigation

2019 ◽  
Vol 5 (1) ◽  
pp. 31-45 ◽  
Author(s):  
Sara Tiziana Levi ◽  
Diego Calliari ◽  
Marta Arzarello ◽  
Valentina Cannavò ◽  
Andrea Di Renzoni ◽  
...  
Keyword(s):  
Bronze Age ◽  
Preliminary Investigation ◽  
Raw Material ◽  
Aeolian Islands ◽  
Preliminary Results ◽  
Production Areas ◽  
Non Destructive ◽  
The Bronze Age

AbstractWe present the preliminary results of the ongoing investigation of the obsidian from the Bronze Age village of San Vincenzo, Stromboli, Aeolian Islands, for the purpose of providing technological and typological characterization, and also provenance of the raw material, the latter with non-destructive p-XRF. Regarding provenance, the source of the raw material is likely to be neighbouring Lipari. It was transported to Stromboli and used mostly in a highly opportunistic manner and for the production of blade(let), non-bladelike tools (mainly scrapers) and micro bladelets. The obsidian distribution around the site shows concentration in both domestic and production areas.

scholarly journals Review of Coal-Fired Electrification and Magnetic Separation Desulfurization Technology

2019 ◽  
Vol 9 (6) ◽  
pp. 1158 ◽  
Author(s):  
Yan Chen ◽  
Min Cao ◽  
Chunyan Ma
Keyword(s):  
Magnetic Separation ◽  
Development Trend ◽  
Research Process ◽  
Paper Briefly ◽  
Electrostatic Separation ◽  
High Gradient Magnetic Separation ◽  
High Gradient ◽  
Separation Technology ◽  
Coal Desulfurization ◽  
The Development Trend

This paper briefly introduces various methods of coal desulfurization (physical desulphurization, chemical desulfurization, biological desulfurization, etc.) and analyzes some problems existing in each method. The principle and research process of friction electrostatic separation technology and high gradient magnetic separation technology in pre-combustion desulfurization technology are emphatically introduced, and the development trend of coal-fired desulfurization technology in the future is prospected.

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