Temat: germanium - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: The Effect of Addition of Germanium to the Surface Phenomena in Silver Alloys
Autorzy:: Jesiotr, M.
Trzaskowski, W.
Trochimiak, D.
Nawrocki, P.
Łukasik, K.
Myszka, D.
Powiązania:: https://bibliotekanauki.pl/articles/382325.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: silver
germanium
microstructure
oxide layers
corrosion
srebro
german
mikrostruktura
warstwa tlenku
korozja
Opis:: The article describes the impact of germanium on the course of surface phenomena in casting alloys of silver used in gold smithing. The aim of this works is to describe the assessment of resulting alloys, comparing the area of raw castings and the impact of the addition content of the alloy on the hardness of the samples. The evaluation also was subject to corrosion resistance of giving a comparison of their use in relations to traditional silver alloys.
Źródło:: Archives of Foundry Engineering; 2018, 18, 3; 81-85
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Development of hydrogen-enriched water gas production technology by processing Ekibastuz coal with technogenic waste
Autorzy:: Dikhanbaev, B.
Dikhanbaev, A. B.
Sultan, I.
Rusowicz, A.
Powiązania:: https://bibliotekanauki.pl/articles/140012.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: hydrogen-enriched water gas
reactor of inversion phase–rotary kiln–gas generator
cupreous cast iron
zinc-germanium containing sublimates
gaz wodny wzbogacony wodorem
reaktor fazy inwersyjnej-pieca obrotowego-generatora gazu
żeliwo miedziowe
sublimaty zawierające cynk-german
Opis:: In the dumps of metallurgical enterprises of Kazakhstan about 700 million tons of waste products are generated annually, and are polluting the atmosphere and the soil. The concentration of valuable components in waste products are no lower than in natural resources. The reserves of coal in the Ekibastuz basin are estimated to be more than a billion tons, and almost half of this is made up of ash. Every year, up to 30 million tons of ash-cinder waste is generated, which presents a serious threat to nature. Gallium and germanium concentrations in dumps are approximately 200 grams per ton, which is comparable to the content in coal before processing. The current research aims at creating a unit to obtain hydrogen-enriched water gas from Ekibastuz coal, with the production of zinc, gallium and germanium sublimates, copper-containing cast iron, slag wool and cast stone, through the joint processing of zinc-rich slag and ash-cinder wastes from thermal power plants. To achieve this, we used previous methods of extreme energy saving and a new method, the smelt layer with inversion phase. Experimental results from the “reactor inversion phase – rotary kiln” (RIPh) unit, which processed zinc-germanium contained slag, showed the potential to extract germanium from zinc sublimates, to reduce iron to the form of cupreous cast iron, and to obtain combustible gases and smelt suitable for slag-wool production. Calculations performed on the joint processing of Ekibastuz coal and zinc-rich slag using the proposed unit“ reactor of inversion phase–rotary kiln–gas generator” showed it can obtain hydrogen-enriched watergas, along with the extraction of valuable components of primary raw material.
Źródło:: Archive of Mechanical Engineering; 2018, LXV, 2; 221-231
0004-0738
Pojawia się w:: Archive of Mechanical Engineering
Dostawca treści:: Biblioteka Nauki

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