Gutandukanya Arsenic no gutunganya

Uburyo bwa arsenic distillation no kweza nuburyo bukoresha itandukaniro muguhindagurika kwa arsenic hamwe nibiyigize kugirango bitandukane kandi bisukure, cyane cyane bikwiriye gukuraho sulfure, seleniyumu, tellurium nibindi byanduye muri arsenic.Dore intambwe z'ingenzi n'ibitekerezo:

1.Kwibeshya

• Inkomoko ya arsenic: mubisanzwe nkibicuruzwa byo gushonga amabuye y'agaciro arimo arsenic (urugero: arsenite, realgar) cyangwa imyanda irimo arsenic irimo imyanda.
• Gutwika Oxidative.

As2S3 + 9O2 → As2O3 + 3SO2As2 S3 + 9O2 → Nk2O3 + 3SO2

2.Igice cyo gusibanganya

• Ibikoresho: Quartz cyangwa ceramic iracyariho (irwanya ruswa, irwanya ubushyuhe bwo hejuru), ifite umuyoboro wa kondenseri no kwakira icupa.
• Kurinda: Azote cyangwa dioxyde de carbone yatangijwe kugirango irinde okiside ya arsenic cyangwa ibyago byo guturika (imyuka ya arsenic irashya).

3.Inzira yo gusibanganya

• Kugenzura ubushyuhe:
  • Arsenic sublimation: As₂O₃ sublimation kuri 500-600 ° C (sublimation ya arsenic yuzuye kuri 615 ° C).
  • Gutandukana kw'umwanda: umwanda utetse nka sulfure na seleniyumu bihindagurika cyane kandi birashobora gutandukanywa na kondegisiyo.
• Icyegeranyo: Imyuka ya Arsenic yegeranya cyane-As₂O₃ cyangwa arsenic yibanze muri zone yegeranye (100-200 ° C)).

4.Nyuma yo gutunganywa

• Kugabanuka(niba arsenic yibanze isabwa): Kugabanya As₂O₃ hamwe na karubone cyangwa hydrogen

As2O3 + 3H2 → 2As + 3H2OAs2 O3 + 3H2 → 2As + 3H2O.

• Gukuramo Vacuum: gukomeza kweza arsenic yibanze kugirango ikureho imyanda ihindagurika.

5.Kwirinda

• Kurinda uburozi: Inzira yose irafunze imikorere, ifite ibikoresho byo gutahura arsenic nibikoresho byihutirwa.
• Gutunganya gaze umurizo: Nyuma ya kondegene, gaze umurizo igomba kwinjizwa nigisubizo cya lye (nka NaOH) cyangwa gukora carbone adsorption kugirango wirinde As₂O₃imyuka ihumanya ikirere.
• Kubika ibyuma bya Arsenic: ibitswe mukirere cya inert kugirango wirinde okiside cyangwa deliquescent.

6. UbuziranengeGutezimbere

• Ibyiciro byinshi: Gusubiramo inshuro nyinshi birashobora kuzamura isuku kurenza 99,99%.
• Gushonga (bidashoboka): Gutunganya zone ya arsenic yibanze kugirango irusheho kugabanya umwanda wibyuma.

Imirima yo gusaba

Arsenic-yera cyane ikoreshwa mubikoresho bya semiconductor (urugero nka GaAskristu), inyongeramusaruro, cyangwa mugukora ibirahuri byihariye. P.rocesses igomba kubahiriza amabwiriza akomeye y’ibidukikije kugirango umutekano urusheho no guta imyanda.