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Njira yopangira ferro-tungsten

Tsiku: Mar 8th, 2024
Werengani:
Gawani:
Njira ya Agglomeration Ng'anjo yamagetsi yotseguka yomwe imatha kusunthidwa panjanji ndipo gawo lapamwamba la ng'anjo ya ng'anjo limagwiritsidwa ntchito, ndipo kaboni imagwiritsidwa ntchito ngati chochepetsera. Fine tungsten ore, phula coke (kapena petroleum coke) ndi slagging wothandizila (bauxite) wopangidwa ndi chisakanizo cha malipiro anawonjezera ku ng'anjo mu magulu angapo, zitsulo woyengedwa mu ng'anjo zambiri viscous, ndi makulidwe apamwamba, m'munsi mwa kulimba kwapang'onopang'ono. Ng'anjo kudzikundikira pambuyo kuyimitsa ng'anjo, kukoka ng'anjo thupi kunja, kuchotsa chapamwamba chigawo cha ng'anjo thupi kuti mtanda condensation. Kenako tulutsani ma agglomerates kuti muphwanye ndikumaliza; sankhani m'mphepete, ndi slag ndi zigawo zosayenerera kubwerera ku ng'anjo kuti zisungunuke. Mankhwalawa ali ndi 80% tungsten komanso osapitilira 1% kaboni.



Njira yochotsera chitsulo ndi yoyenera kusungunula ferro-tungsten yomwe ili ndi 70% tungsten yokhala ndi malo otsika osungunuka. Silikoni ndi kaboni amagwiritsidwa ntchito ngati zochepetsera; imayendetsedwa m'magawo atatu: kuchepetsa (komwe kumatchedwanso kuchepa kwa slag), kuyenga ndi kuchotsa chitsulo. Kuchepetsa siteji ng'anjo lili ng'anjo kutenga chitsulo anasiyidwa pambuyo slag munali WO3 wamkulu kuposa 10%, ndiyeno motsatizana anawonjezera kwa tungsten maganizo mlandu, ndiyeno anawonjezera pakachitsulo 75% ferrosilicon ndi pang'ono phula coke (kapena petroleum coke) pofuna kuchepetsa kusungunuka, kukhala slag yokhala ndi WO3 mpaka 0.3% pansi pa slag. Kenako anasamutsidwa siteji kuyenga, mu nthawi imeneyi, kuwonjezera tungsten maganizo, phula coke osakaniza mu magulu, opareshoni ndi voteji apamwamba, pa kutentha apamwamba kuchotsa pakachitsulo, manganese ndi zosafunika zina. Chitsanzo mayeso kudziwa zikuchokera oyenerera, anayamba kutenga chitsulo. Panthawi yochotsa chitsulo, tungsten concentrate ndi asphalt coke amawonjezeredwabe moyenera malinga ndi momwe ng'anjo imayendera. Kugwiritsa ntchito mphamvu zosungunula pafupifupi 3,000 kW-hr/ton, tungsten kuchira kwa pafupifupi 99%.



Aluminiyamu matenthedwe njira kuti agwiritse ntchito zinyalala tungsten carbide ufa tungsten ndi cobalt kulekana kwa cobalt m'zigawo za regenerated tungsten carbide, anapanga aluminium matenthedwe njira ya ferro-tungsten ndondomeko, ndi regenerated tungsten carbide ndi chitsulo monga zopangira, zotayidwa ngati reductant, ndi kugwiritsa ntchito tungsten carbide mu kuyaka kwake kwa kaboni ndi aluminiyamu pakuwotcha, kotero kuti zopangira mu tungsten ndi chitsulo mu ferro-tungsten, zitha kupulumutsa magetsi ambiri, komanso kuchepetsa ndalama. Panthawi imodzimodziyo, chifukwa zonyansa za tungsten carbide ndizochepa kwambiri kuposa zomwe zili mu tungsten concentrate, khalidwe la mankhwala ndilokwera kuposa la ferrotungsten pogwiritsa ntchito tungsten concentrate monga zopangira. Chiwopsezo cha kuchira kwa tungsten ndichokweranso kuposa momwe chimagwirira ntchito pogwiritsa ntchito tungsten concentrate ngati zopangira.