Simenti Carbide Products Tungsten Powder Kukonzekera

Ufa wapamwamba kwambiri wa tungsten ndi wakuda, tinthu tating'onotungstenufa ndi wotuwa wakuda, ndipo tinthu tating'onoting'ono ta tungsten ndi imvi komanso chitsulo chonyezimira.Metal tungsten ufa amatha kupangidwa pochepetsa tungsten oxide.Njira zazikulu zochepetsera ndi kuchepetsa hydrogen ndi kuchepetsa mpweya.Pakalipano, njira yochepetsera haidrojeni imagwiritsidwa ntchito.Kugwirizana kwa haidrojeni ndi mpweya pa kutentha kwakukulu ndi kwakukulu kuposa kuyanjana kwa tungsten ndi mpweya.Choncho, tungsten trioxide imayamba kuchepetsedwa ndi haidrojeni pa 380 ~ 400 ° C.Hydrogen imatha kuchepetsa tungsten dioxidetungsten ufapamwamba pa 630 ° C.

.Thetungsten ufaopangidwa ndi njira ya hydrogen kuchepetsa ali mkulu chiyero ndipo n'zosavuta kulamulira tinthu kukula kwa ufa.Popanda haidrojeni, njira yochepetsera mpweya imapezekanso.Ubwino wa udzu wouma ndikuti mpweya wakuda ndi wotchipa komanso wosavuta kupeza, koma kukula kwa tinthu ta ufa kumakhala kovuta kuwongolera.Pali njira yochepetsera nthawi imodzi yochepetsera tungsten oxide ndi haidrojeni kukonzekera ufa wa tungsten, komanso pali njira yochepetsera masitepe ambiri omwe poyamba amachepetsa WO3 ku WO2, ndiyeno amachepetsa oxalic acid poyamba kupanga w ufa.Pakupanga kwamakono, tungsten ufa nthawi zambiri umapangidwa ndi njira imodzi yochepetsera mwachindunji.

Kuphatikiza apo, palinso njira yochepetsera mwachindunji ammonium paratungstate kukhala tungsten ufa.Ma tungsten ena apadera amakonzedwanso ndi njira yochepetsera halide.
Palinso njira ya aluminothermic yochepetsera ufa wa ore ndikukonzekera.Kuyambira 2000, njira yokonzekera ufa wa ultrafine tungsten ndi hydrogen kuchepetsa violet tungsten yakhala ikulimbikitsidwa kwambiri.