Occurrence of talc in soils with high iron content from the south-west of Spain

Soil Research ◽  
1996 ◽  
Vol 34 (5) ◽  
pp. 635 ◽  
Author(s):  
JL Perez-Rodriguez ◽  
C Maqueda ◽  
P Rodriguezrubio ◽  
MCJ Deharo
Keyword(s):  
Iron Oxides ◽  
Iron Content ◽  
Clay Fraction ◽  
Parent Material ◽  
High Iron Content ◽  
High Iron ◽  
Notable Feature ◽  
Iron Mineral ◽  
Residual Phase ◽  
South West

The mineralogy of the clay fractions of 2 soil profiles classified as an Alfic Dystric Eutrochrept (Soil I) and a Xerochreptic Haploxeralf (Soil II) has been determined. A notable feature of these soils is the presence of talc and the high iron content as goethite, hematite, lepidocrocite, and maghemite. Talc was the most abundant non-iron mineral of the clay fraction of Soil II. In Soil I, talc occurs as a residual phase from the parent material with its persistence in the profile aided by coatings of iron oxides, which inhibit further weathering. In these soils there is a high proportion of goethite accompanied by hematite. In Soil I the proportion of iron oxides changes within the profile. Another notable feature of this profile is the presence of maghemite in the upper horizons where this is the predominant iron oxide mineral.

ON THE PROCESSING OF HEMATITE RAW MATERIALS AT THE KRYVOROZHSK MINING AND PROCESSING PLANT OF OXIDIZED ORE ON TECHNOLOGY OF DIRECT RECOVERY ITmk3

2018 ◽  
pp. 32-37
Author(s):  
P.I. Loboda ◽  
Younes Razaz ◽  
S. Grishchenko
Keyword(s):  
Magnetic Properties ◽  
Cast Iron ◽  
Iron Content ◽  
Raw Materials ◽  
Direct Reduction ◽  
Processing Plant ◽  
High Iron Content ◽  
High Iron ◽  
Direct Restoration ◽  
First Time

Purpose. To substantiate the efficiency of processing hematite raw materials at the Krivoy Rog Mining and Processing Plant of Oxidized Ores using the direct reduction technology itmk3®. Metodology. Analysis of the results of the itmk3® direct restoration technology developed by Kobe Steel Ltd., Japan and Hares Engineering GmbX, Austria, with a view to using it to process Krivbass hematite ores into granulated iron (so-called “nuggets”). Findings. The involvement in the production of hematite ores (oxidized quartzite) of Krivbass with high iron content, but with low magnetic properties for their processing into granular cast iron is grounded. Originality. The use of itmk3® direct reduction technology from Kobe Steel Ltd., Japan and Hares Engineering GmbH, Austria for the processing of Krivbass hematite ores into granular cast iron is justified for the first time. Practical value. The efficiency of the use of hematite ores (oxidized quartzite) has been substantiated, which can significantly reduce the costs in the mining cycle for the economical production of metallurgical products.

Fabrication of bisferrocenyl derivative grafted HTPB with high iron content and its application in dopamine detection

2021 ◽  
pp. 121789
Author(s):  
Alireza Aghaiepour ◽  
Shabnam Rahimpour ◽  
Elmira Payami ◽  
Reza Mohammadi ◽  
Reza Teimuri-Mofrad
Keyword(s):  
Iron Content ◽  
High Iron Content ◽  
High Iron ◽  
Dopamine Detection

High iron content of Ankaferd hemostat as a clue for its hemostatic action of red blood cell origin

2015 ◽  
Vol 26 (2) ◽  
pp. 233-234 ◽  
Author(s):  
Nejat Akar ◽  
Yasemin Ardçoğlu ◽  
Zeki Öktem ◽  
Nuran Erduran ◽  
Ibrahim C. Haznedaroglu
Keyword(s):  
Blood Cell ◽  
Red Blood Cell ◽  
Iron Content ◽  
High Iron Content ◽  
High Iron

scholarly journals Studies on high iron content in water resources of Moradabad district (UP), India

Water Science ◽  
2017 ◽  
Vol 31 (1) ◽  
pp. 44-51 ◽  
Author(s):  
Vipin Kumar ◽  
Pawan Kumar Bharti ◽  
Meenu Talwar ◽  
Ajay K. Tyagi ◽  
Pamposh Kumar
Keyword(s):  
Water Resources ◽  
Iron Content ◽  
High Iron Content ◽  
High Iron

Ductile Fe-based amorphous alloys with high iron content

2010 ◽  
Vol 17 (2) ◽  
pp. 199-203
Author(s):  
Feng-juan Liu ◽  
Tao Zhang ◽  
Shu-jie Pang ◽  
Ke-fu Yao
Keyword(s):  
Iron Content ◽  
Amorphous Alloys ◽  
High Iron Content ◽  
High Iron

scholarly journals In Situ Control of Thermal Activation Conditions by Color for Serpentines with a High Iron Content

Materials ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 6731
Author(s):  
Tatiana K. Ivanova ◽  
Irina P. Kremenetskaya ◽  
Andrey I. Novikov ◽  
Valentin G. Semenov ◽  
Anatoly G. Nikolaev ◽  
...  
Keyword(s):  
Iron Content ◽  
Large Scale ◽  
Color Change ◽  
Reference Sample ◽  
Chemical Activity ◽  
High Iron Content ◽  
Color Palette ◽  
High Iron ◽  
Serpentine Minerals ◽  
Heat Treated

Serpentine heat treatment at temperatures of 650–750 °C yields magnesium–silicate reagent with high chemical activity. Precise and express control of roasting conditions in laboratory kilns and industrial aggregates is needed to derive thermally activated serpentines on a large scale. Color change in serpentines with a high iron content during roasting might be used to indicate the changes in chemical activity in the technological process. This study gives a scientific basis for the express control of roasting of such serpentines by comparing the colors of the obtained material and the reference sample. Serpentines with different chemical activity were studied by X-ray diffraction, Mössbauer spectroscopy, and optical spectroscopy. The color parameters were determined using RGB (red, green, blue), CIELAB (International Commission on Illumination 1976 L*a*b), and HSB (hue, brightness, saturation) color models. The color of heat-treated samples was found to be affected by changes in the crystallochemical characteristics of iron included in the structure of the serpentine minerals. The color characteristics given by the CIELAB model were in good coherence with the acid-neutralizing ability and optical spectra of heat-treated serpentines. Thus, in contrast to the long-term analysis by these methods, the control by color palette provides an express assessment of the quality of the resulting product.

Catalytic Polymerization of Anthracene in a Recyclable SBA-15 Reactor with High Iron Content by a Friedel-Crafts Alkylation

2012 ◽  
Vol 51 (12) ◽  
pp. 2859-2863 ◽  
Author(s):  
Jeonghun Kim ◽  
Chokkalingam Anand ◽  
Siddulu N. Talapaneni ◽  
Jungmok You ◽  
Salem S. Aldeyab ◽  
...  
Keyword(s):  
Iron Content ◽  
Catalytic Polymerization ◽  
High Iron Content ◽  
High Iron
Sign in / Sign up

Export Citation Format

Share Document