labarai

Lokacin konewa, ƙazantattun ƙwayoyin cuta a cikin samfurin suna da ƙarfi (kamar sodium chloride, potassium chloride, sodium sulfate, da dai sauransu), idan ba saboda ƙonawa da ƙazantawa ba, ana iya amfani da wannan hanya don ƙayyade ash a cikin samfurin.

[Hanyar Ƙaddara] Sanya murfin yumbu (ko nickel crucible) a kan tanderun lantarki mai zafi mai zafi (watau ver furnace) ko harshen wuta, ƙone zuwa madaidaicin nauyi na kusan (kimanin awa 1), matsar da shi zuwa na'urar bushewar calcium chloride. da sanyi zuwa zafin jiki. Daga nan aka auna murfin murfi tare akan ma'aunin nazari kuma an saita shi zuwa G1 g.

A riga an auna crucible, dauki samfurin da ya dace (dangane da ash a cikin samfurin, kullum ana kiransa 2-3 grams), ya ce zuwa 0.0002 grams, da crucible murfin bakin game da uku bariki, tare da low wuta a hankali dumama crucible, sa samfurin a hankali carbonization. , bayan crucible a cikin wutar lantarki tanderu (ko iskar gas), ba kasa da 800℃ƙonawa zuwa matsakaicin nauyi na dindindin (kimanin sa'o'i 3), an koma zuwa drier calcium chloride, sanyaya zuwa zafin jiki, aunawa. Zai fi kyau a rika konewa bayan awa 2, a yi sanyi, a auna, sannan a kona na tsawon awa 1, sannan a yi sanyi, a auna, kamar auna biyu a jere, nauyin ya kusa canzawa, sannan yana nufin ya kone gaba daya, idan nauyin ya ragu. bayan ƙonawa na biyu, to, dole ne ya zama ƙonawa na uku, ƙone har sai kama da madaidaicin nauyi, saita G grams.

(G-G1) / samfurin nauyi x100 = launin toka%

[Lura] - - Za'a iya ƙayyade girman samfurin bisa ga adadin ash a cikin samfurin, ƙananan samfurin ash, ana iya kiransa kimanin gram 5 na samfurin, ƙarin samfurin ash, ana iya kiransa kimanin 2 grams na samfurin.

2. Tsawon lokacin ƙonawa ya dogara da nauyin samfurin, amma ƙonawa yana kama da nauyin kullun.

3. Bambanci na aunawa wanda ya ƙone sau biyu a jere yana da mafi kyau a cikin 0.3 MG a ƙasa, matsakaicin bambanci ba zai iya wuce 1 MG ba, la'akari da kimanin a cikin nauyi akai-akai wato.