Results 21 to 30 of about 4,537 (187)
Characterization of sand and sand–binder systems from the foundry industry with electrical impedance spectroscopy [PDF]
Journal of Sensors and Sensor Systems, 2021 The global economy consumes an estimated 4×1010 t of sand per year, with only 2×1010 t of sand being reproduced by natural sedimentation (Götze and Göbbels, 2017; Peduzzi, 2014).
L. Bifano +3 more
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Assessment of Foundry Chromite Sand Crushability under Thermal-Mechanical Loading
Archives of Foundry Engineering, 2022 When used for sand casting, foundry sand is stressed in several ways. These stresses, thermal and mechanical, compromise the grain integrity, resulting in size reduction and the production of small particles to the point where the sand is no longer viable for sand casting. This study evaluates the crushability of chromite sand, a crucial characteristic
J.K. Kabasele, K.D. Nyembwe, H. Polzin
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Tikrit Journal of Pure Science, 2023 Study of three Barchan sand dunes in Na'ama area southeast Tikrit city have been carried out for (10) samples, the investigation included petrographical, mineralogical and geochemical aspects of the sand dunes from grain size point, the sand grains are ...
Yaseen S. K. Al-Jwaini
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Effect of Temperature on Chromite-Based Moulding Sands Bonded with Sodium Silicate
Archives of Foundry Engineering, 2016 In the paper, a research on effects of baking temperature on chromite sand base of moulding sands bonded with sodium silicate is presented. Pure chromite sand and its chromite-based moulding sand prepared with use of sodium silicate were subjected to ...
Stachowicz M. +3 more
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GEOPOL®. The innovated environment friendly inorganic binder system [PDF]
, 2019 This paper deals with the complete technology of inorganic geopolymer binder system GEOPOL® which is a result of long term research and development. The objective of this paper is to provide a theoretical and practical overview of the GEOPOL® binder ...
Burian, Alois +2 more
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Influence of Molding Materials on the Self-Hardening of X46Cr13 Steel / Grey Cast Iron Bimetallic Castings [PDF]
Archives of Metallurgy and Materials, 2020 The paper presents the problem which concerning the technology of bimetallic castings in materials configuration: high-chromium steel as the working layer and grey cast iron as the base part.
N. Przyszlak, T. Wróbel, A. Dulska
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Widespread abiotic methane in chromitites [PDF]
, 2018 Recurring discoveries of abiotic methane in gas seeps and springs in ophiolites and peridotite massifs worldwide raised the question of where, in which rocks, methane was generated.
Etiope, G. +8 more
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Free Opening Performance of Steel Ladle as a Function of Filler Sand Properties [PDF]
Materials Research, 2016 The secondary steel refining process uses filler sand as a thermal insulating barrier that separates the liquid metal from direct contact with slide-gate system of the steel ladle. The effective use of this practice must provide a high free opening rate,
Ricardo Thomé da Cruz +3 more
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Enrichment Chromite Sand Grade Using Magnetic Separator
IOP Conference Series: Materials Science and Engineering, 2019 Abstract To fulfil requirements of mettalurgical grade 48% Cr2O3 with Cr:Fe ratio 3:1 need the right beneficiation, one of them is using magnetic separator. Chromite sand sample obtain from Konowe-Southeast Sulawesi have low grade, so it needs process to enrichment Cr:Fe Ratio.
S Subandrio +3 more
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Conodont dating of the Middle Ordovician breccia cap-rock limestone on Osmussaar Island, northwestern Estonia [PDF]
Estonian Journal of Earth Sciences, 2012 Various mechanisms have hitherto been suggested to explain the formation of the Kundan (Middle Ordovician) Osmussaar Breccia in northwestern Estonia. Following the recent discovery of L-chondritic chromite in these peculiar, sand-penetrated strata, it ...
Johanna I. S. Mellgren +4 more
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