Temat: bog ore - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Iron-containing phases in metallurgical and coke dusts as well as in bog iron ore
Autorzy:: Szumiata, T.
Rachwał, M.
Magiera, T.
Brzózka, K.
Gzik-Szumiata, M.
Gawroński, M.
Górka, B.
Kyzioł-Komosińska, J.
Tematy:: metallurgical dusts
coke dusts
bog ore
phase analysis
Mössbauer spectrometry
magnetic susceptibility; Pokaż więcej
Wydawca:: Instytut Chemii i Techniki Jądrowej
Powiązania:: https://bibliotekanauki.pl/articles/148303.pdf Link otwiera się w nowym oknie
Opis:: Several samples of dusts from steel and coke plants (collected mostly with electro filters) were subjected to the investigation of content of mineral phases in their particles. Additionally, sample of bog iron ore and metallurgical slurry was studied. Next, the magnetic susceptibility of all the samples was determined, and investigations of iron-containing phases were performed using transmission Mössbauer spectrometry. The values of mass-specific magnetic susceptibility varied in a wide range: from 59 to above 7000 × 10−8 m3kg−1. The low values are determined for bog iron ore, metallurgical slurry, and coke dusts. The extremely high was obtained for metallurgical dusts. The Mössbauer spectra and X-ray diffraction patterns point to the presence of the following phases containing iron: hematite and oxidized magnetite (in coke and metallurgical dusts as well as metallurgical slurry), traces of magnetite fi ne grains fraction (in metallurgical dusts), amorphous glassy silicates with paramagnetic Fe3+ and Fe2+ ions, traces of pyrrhotite (in coke dusts), α-Fe and nonstoichiometric wüstite (in metallurgical slurry), as well as ferrihydrite nanoparticles (in bog iron ore). For individual samples of metallurgical dusts, the relative contributions of Fe2+/3+ ions in octahedral B sites and Fe2+ ions in tetrahedral A sites in magnetite spinel structure differs considerably.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: The Comparison of Biogas Desulphurisation Process Using Bog Iron Ore and SulfurE – A Case Study
Autorzy:: Wierzbinska, Monika
Juraszek, Dawid
Tematy:: hydrogen sulphide
bog iron ore
Sulfure
desulphurisation
biogas; Pokaż więcej
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Powiązania:: https://bibliotekanauki.pl/articles/59316039.pdf Link otwiera się w nowym oknie
Opis:: Biogas desulphurisation plants aim to remove hydrogen sulphide and other gaseous compounds that occur in the gas mixture. This mainly concerns the reduction of H 2S which reacts with most metals such as iron or copper, which leads to the corrosion of pipelines and equipment. The aim of this research was to use two materials to adsorb hydrogen sulphide from biogas and to compare the efficiency of these two processes. Biogas was passed through both adsorbents. The concentration of hydrogen sulphide was measured upstream and downstream of the adsorbent bed. The results are summarised in diagrams. The first material used in the biogas desulphurisation plant at the wastewater treatment plant was bog iron ore. The bed was replaced several times during the year to maintain the efficiency of hydrogen sulphide removal from the biogas. After a year, a new adsorbent called “SulfurE” was used in place of the bog iron ore. The new bed operated with higher efficiency than the bog iron ore. The operating period between bed replacements was also extended. The bog iron ore bed in the desulphurisation plant was replaced on average 3 to 4 times a year, depending on the amount of hydrogen sulphide flowing into the desulphurisation plant (the more H 2S, the higher the frequency of bed replacement). The bed in the desulphurisation plant filled with the “SulfurE” product operated for about 9 months with 90% hydrogen sulphide absorption efficiency (depending on the quality of biogas produced).
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Między koniecznością a pragmatyzmem. Znaczenie kamienia, gliny i rudy darniowej w architekturze pogranicza mazowiecko-dobrzyńskiego
Between necessity and pragmatism: Stone, clay and bog ore in rural architecture in the borderland of the Mazovian Region and the Dobrzyń Region
Autorzy:: Piotrowski, Robert
Tematy:: architektura kamienna
architektura gliniana
architektura z rudy darniowej
architektura wiejska
ochrona architektury wiejskiej
stone architecture
clay architecture
bog ore architecture
rural architecture
preservation of rural architecture; Pokaż więcej
Wydawca:: Stowarzyszenie Konserwatorów Zabytków
Powiązania:: https://bibliotekanauki.pl/articles/1841649.pdf Link otwiera się w nowym oknie
Opis:: Artykuł omawia problem „niekanonicznej” architektury wiejskiej pogranicza mazowiecko-dobrzyńskiego, do której zaliczone zostały przykłady budownictwa kamiennego, glinianego i z rudy darniowej. Pomimo dotychczasowego nikłego zainteresowania wśród badaczy tego typu budownictwem z pogranicza mazowiecko-dobrzyńskiego stanowi ono istotny element pejzażu kulturowego tego obszaru i jest powiązane zarówno z kontekstem historyczno- społecznym, jak i geograficzno-przyrodniczym. Tym samym stanowi istotną część dziedzictwa kulturowego pogranicza mazowiecko-dobrzyńskiego i powinno zostać objęte badaniami konserwatorskimi i etnograficznymi, uwzględniającymi konstrukcje, materiał, techniki budowlane oraz szeroki kontekst społeczny odnoszący się do tego rodzaju architektury.
The paper discusses the problem of “non-canonical” rural architecture of the Mazovia–Dobrzyń borderland, which includes examples of stone, clay and bog ore architecture. Despite low previously interest among scholars in this type of architecture from the Mazovia–Dobrzyń borderland, it is an essential element of the cultural landscape of the area and is linked with its, historical, social, geographical and natural contexts. It is therefore an essential part of the cultural heritage of the Mazovia–Dobrzyń borderland and should be targeted for detailed conservation and ethnographic studies accounting not only for their structural systems, materials and construction techniques, but also the broader social context that refers to this type of architecture.
Dostawca treści:: Biblioteka Nauki

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