Izindlela Eziyinhloko Zokukhiqiza I-Tungsten Powder

I-Tungsten powder iyisisetshenziswa esiyinhloko sokukhiqizwa kwe-tungsten carbide, i-tungsten ehlanzekile, ama-tungsten alloys neminye imikhiqizo ye-tungsten, ngaphezu kuka-70% wempushana ye-tungsten esetshenziswa ekukhiqizeni i-tungsten carbide. Njengamanje, izindlela eziyinhloko zokuthola i-tungsten powder yilezi:

Indlela yokunciphisa i-hydrogen ye-tungsten oxide

Lena indlela yokunciphisa i-tungsten oxide ku-tungsten powder usebenzisa i-H2 njenge-ejenti yokunciphisa. Ukuthatha ukuncishiswa kwe-hydrogen kwe-WO₃ njengesibonelo, ukusabela okuphelele yilokhu:

WO₃+3H₂=W+3H₂O

Njengamanje, ama-tungsten oxide asetshenziswa njengezinto zokusetshenziswa zokunciphisa i-hydrogen ikakhulukazi ahlanganisa i-tungsten trioxide ephuzi (WO₃), i-tungsten oxide eluhlaza okwesibhakabhaka (ikakhulukazi i-WO₂.₉), ne-tungsten oxide ensomi (WO₂.₇₂), njll. Indlela yokunciphisa i-hydrogen ye-tungsten oxide iyindlela eyinhloko yokukhiqiza i-tungsten metal powder at the present.

2. Ukunciphisa i-hydrogen yama-tungsten halides

Lena indlela esebenzisa i-H2 njenge-ejenti yokunciphisa ukunciphisa i-tungsten halides (njenge-tungsten chloride, i-tungsten fluoride) ibe yi-metallic tungsten. Isibonelo, esimweni sokunciphisa i-hydrogen ku-WCl6, ukusabela okuphelele yilokhu:

WCl6+3H₂=W+6HCI

Inqubo yokunciphisa i-hydrogen ye-tungsten halides iwukusabela kwesigaba segesi, ikakhulukazi esetshenziswa ekubekeni umhwamuko wamakhemikhali ukuze kukhiqizwe i-ultrafine tungsten powder noma i-tungsten coatings. Njengamanje, indlela yokunciphisa i-chlorination ye-tungsten halides isetshenziselwa kuphela ukukhiqiza okuncane.

3. Indlela Yokunciphisa Ikhabhoni Ye-Tungsten Oxides

Lapho ingxube ye-tungsten oxides nekhabhoni ishiselwa ezingeni lokushisa elithile, ama-tungsten oxides ancipha abe yimpuphu ye-tungsten. Ukuthatha ukuncishiswa kwekhabhoni kwe-WO₃ njengesibonelo, ukusabela okuphelele kuthi:

WO₃+3C=W+3CO

WO₃+3CO=W+3CO₂

Ngezinye izikhathi, inani elincane le-hydrogen lingeniswa esithandweni ukukhuthaza inqubo yokunciphisa i-carbon. Kodwa-ke, i-tungsten powder ekhiqizwa yile ndlela inokuqukethwe kwekhabhoni ephezulu futhi ayifanele imikhiqizo ye-tungsten. Njengamanje, indlela yokunciphisa i-carbon yokulungiselela i-tungsten powder ayisetshenziswa kancane, kodwa isetshenziswa ngokuya ekukhiqizeni okuqondile kwe-tungsten carbide, ikakhulukazi i-ultrafine tungsten carbide powder kanye ne-tungsten carbide composite powder.

4. Ezinye Izindlela

Ezinye izindlela zokukhiqiza i-metallic tungsten zifaka i-electrolysis kasawoti encibilikisiwe, ukunciphisa i-zinc, nokunciphisa i-plasma hydrogen, phakathi kokunye.