Experimental formation of Pb, Sn, Ge and Sb sulfides, selenides and chlorides in the presence of sal ammoniac: A contribution to the understanding of the mineral formation processes in coal wastes self-ignition

0482846 - FZÚ 2018 RIV NL eng J - Článek v odborném periodiku
Laufek, F. - Veselovský, F. - Drábek, M. - Kříbek, B. - Klementová, Mariana
Experimental formation of Pb, Sn, Ge and Sb sulfides, selenides and chlorides in the presence of sal ammoniac: A contribution to the understanding of the mineral formation processes in coal wastes self-ignition.
International Journal of Coal Geology. 176-177, May (2017), s. 1-7. ISSN 0166-5162. E-ISSN 1872-7840
Institucionální podpora: RVO:68378271
Klíčová slova: coal wastes * metalloids * mineral formation * self-burning processes
Obor OECD: Geology
Impakt faktor: 4.130, rok: 2017

The formation of sulfides, selenides and chlorides was experimentally studied at 800 or 900 °C in the presence of sal ammoniac in sealed silica glass tubes. Synthetic PbS, PbSe, SnS, GeS, SnGeS2, PbSnS3, SnS, Sb2S3, and natural uraninite were used as substrates. Depending on the chemical composition of the sulfide/selenide charge, compounds corresponding to cotunnite, galena, herzenbergite, berndtite, ottemannite, stibnite, panichiite, and unnamed SnGeS3, SnSb2S4 and Sn2Sb3S6 phases were identified in sublimates. Results of the experiments revealed that an addition of chlorine may contribute to the mobility of metals and metalloids in coal wastes self-burning processes.
Trvalý link: http://hdl.handle.net/11104/0278240