High Purity Selenium Purification Processes

Daahirinta Senium-ka safka sare (≥99.999%) waxay ku lug leedahay isku darka habab jireed iyo kiimiko ah si looga saaro cilado sida te, pb, iyo sida. Kuwa soo socdaa waa geedi socodyada muhiimka ah iyo xuduudaha:

1. Murugo Vacuum

Socodka socodka:

1. Dhig Senium Seniya (≥99.9%) oo ku qoran rubuc qumble oo ku dhexjira foornada jahwareerka.

2. Kuleylka 300-500 ° C vacuum (1-100 pa) 60-180 daqiiqo.

3. Buugga hoose ee Selenium-ka wuxuu siiyaa isku-darka laba-marxalad (marxalad hoose oo ay weheliso qayb ka kooban PB / CAST.

4. U soo ururi Selenium-ka korka sare ee korka; 碲 (TE) iyo kuwa kale ee ku karkaraya ee karkaraya ay wali ku jiraan marxaladda hoose.

Cayayaanka:

- heerkulka: 300-500 ° C

- Cadaadis: 1-100 pa

- Qalabka Conserdener: Quartz ama bir aan lahayn.

2. Qalliinka kiimikada + Vachum

Socodka socodka:

1. Community Community: Refely Communim: Refcent Secide Selenium (99.9%) oo leh o₂ 500 ° C si loo sameeyo gaasaska iyo gaaska teo₂.

2. Soosaarista xalka: Kala diri kartaa SEO₂ xalka ethanol-biyo, oo shaandhayso dusha sare ee teo₂ saadaalin.

3. Yaraynta: Isticmaal hydrazine (n₂h₄) si loo yareeyo SEO₂ illaa heer Selenium-ka.

4. De-T-TE: Markale selenium-ka mar labaad si seo₄²⁻, ka dib soo saar si aad u isticmaasho soo saarista xalka ah.

5. Musiibo Fookrum-ka ugu dambeeya: Nadiifiya Selecium-ka 300-500 ° C iyo 1-100 pa si loo gaaro 6n (99.9999%) daahirnimo) daahirnimo.

Cayayaanka:

- heerkulka oxidacation: 500 ° C

- Qiyaasta dhiig-baxa hydrazine: xad-dhaaf ah si loo hubiyo yareynta dhameystiran.

3. Daahirinta elektaroonigga ah

Socodka socodka:

1. Adeegso elektrolyte (tus. Acid selenous) oo leh cufnaanta hadda jirta ee 5-10 a / dm².

2. Selenium-ka ayaa ku yaal cattimus-ka cathode, halka Selenius Oxusis ay ka baxaan anade.

Cayayaanka:

- Cufnaanta hadda jirta: 5-10 a / dm²

- Electrolyte: aashitada saliida leh ama xalka Selenate.

4. Soo saarista xalka

Socodka socodka:

1. Soo saar SE⁴⁺ xalka adoo adeegsanaya TBP (Tribuunyl Phosphate) ama toa (triooctylanic) ee ku jira hydrochloric ama warbaahinta aashitada ee sullufric acid.

2. Xarig iyo saadaalin Senium, ka dibna dib u soo celi.

Cayayaanka:

- Soo-saarista: TBP (HCL dhexda) ama toa (h₂so₄ dhexdhexaad)

- Tirada marxaladaha: 2-3.

5. Aagga dhalaala

Socodka socodka:

1. Soojiidasho-celcelis aag-dhalaal ah oo ku dhajiya sicirka si looga saaro raacitaanka ciladaha.

2. Ku habboon in lagu gaaro> 5n daahir ah oo laga bilaabo qalabka bilowga ah ee laga bilaabo.

Xusuusin: Waxay u baahan tahay qalab ku takhasusay oo waa tamar badan.

Soo jeedinta sawirka

Tixraac muuqaal ah, tixraac tirooyinka soo socda ee suugaanta:

- vacuum deganaansho-goynta