Te tukanga whakahoro me te purenga o te arsenic

Ko te tukanga whakahoro me te purenga o te āheniki he tikanga e whakamahi ana i te rerekētanga o te piki me te heke o te āheniki me ōna pūhui hei wehe me te purenga, he mea tino pai mō te tango i te whanariki, te selenium, te tellurium me ētahi atu poke i roto i te āheniki.Anei ngā mahi matua me ngā whakaaro:

1.Te maimoatanga o mua o ngā rauemi mata

• Ngā pūtake o te āsenika matahe hua taha noa iho i te whakarewanga o ngā kohuke kei roto te āheniki (hei tauira, te āheniki, te rīkara) me ngā para hangarua kei roto te āheniki.
• Te tunu waikura(whiringa): Mena he arsenic sulfide te rauemi mata (hei tauira, As₂S₃), me tunu tuatahi kia huri hei As₂O₃ pūngāwerewere

As2S3+9O2→As2O3+3SO2As2​S3​+9O2​→Hei2​O3​+3SO2​

2.Wāhanga whakatōtō

• Ngā taputapuHe mea hanga ki te kuata, ki te uku rānei (ātete ki te waikura, ātete ki te pāmahana teitei), he ngongo whakamātao me te pounamu tango.
• Parenga kore mahiKa tāpirihia te hauota, te hauhā rānei hei ārai i te waikura, te mōrearea rānei o te pahūtanga o te āheniki (he mura te kohu āheniki).

3.Te tukanga whakatōtō

• Whakahaere pāmahana:
  • Te whakapūmautanga o te āheni: Te whakapūmautanga o te As₂O₃ i te 500-600 °C (te whakapūmautanga o te arsenic parakore i te 615 °C pea).
  • Wehenga pokeKo ngā poke iti te kohua pērā i te whanariki me te selenium ka memeha haere, ā, ka taea te wehe mā te whakapūhautanga wehewehea.
• Kohikohi whakapūpūKa whakapūpū te kohu ārani hei As₂O₃ tino parakore, hei ārani taketake rānei i te rohe whakapūpū (100-200°C).

4.Te tukatuka i muri i te tukatuka

• Whakaitinga(mēnā e hiahiatia ana te āheniki taketake): Te whakaiti i te As₂O₃ ki te waro, ki te hauwai rānei

As2O3+3H2→2As+3H2OAs2​O3​+3H2​→2As+3H2​Ō

• Te whakahorohoro korehau: te purenga atu o te āheniki taketake hei tango i ngā paru pūngāwerewere e toe ana.

5.Ngā Whakatūpato

• Te tiaki i te paitiniHe mahi kati te tukanga katoa, he taputapu kimi turuturu āheniki me ngā taputapu maimoatanga ohorere.
• Te maimoatanga hau hikuI muri i te whakatōtōtanga, me mimiti te hau hiku mā te wairewa lye (pērā i te NaOH) mā te waro whakahohe rānei hei karo i te As₂O₃.ngā tukunga
• Te rokiroki whakarewa āheni: rongoatia ki roto i te āhuarangi kore mahi hei ārai i te waikura, i te memeha rānei.

6. Te ParakoreWhakapai ake

• Te whakatōtō maha-wāhangaMā te whakahoromata anō ka taea te whakapai ake i te parakore ki te neke atu i te 99.99%.
• Te rewa o te rohe (whiringa): Te whakamahine i te āheniki taketake hei whakaiti i ngā poke o te konganuku.

Ngā mara tono

Ka whakamahia te arsenic tino parakore i roto i ngā rauemi semiconductor (hei tauira, GaAstioata), tāpiringa koranu, i roto rānei i te hanga o ngā karāhe motuhake. PMe tutuki e ngā tukanga ngā ture tino pakari mō te taiao kia noho haumaru ai, kia tutuki ai hoki ngā whakaritenga mō te whakakorenga para.