Sabuwar fasaha ta rashin iskar oxygen mai narkewa a cikin tanderun narkewar alkaline na ZGMnl3

(1) Lokacin narkewa na induction narkewa tanderu

Wutar lantarki ta narke. Bayar da 60% na wutar lantarki a cikin mintuna 6-8 bayan farawa don ƙarfafawa, kuma a hankali ƙara ƙarfin zuwa matsakaicin bayan tasirin halin yanzu yana tsayawa. Ramin juzu’i. Yayin da cajin da ke cikin ƙananan ɓangaren crucible ya narke, kula da ramming a kowane lokaci don hana “gadowa”, kuma ci gaba da ƙara caji. Slagging. Bayan an narkar da mafi yawan cajin, ƙara kayan daɗaɗɗa (lime foda: foda foda = 2: -1), da kuma rufe narkakkar karfe da kayan daskarewa. Adadin kayan da aka ƙara shine 1% ~ 1.5%. Samfurori da slagging. Lokacin da cajin ya narke 95%, ɗauki samfurin don bincike, kuma ƙara sauran cajin a cikin tanderun. Bayan cajin ya narke, rage ƙarfin zuwa 40% ~ 50%, zubar da slag daga tanderun, kuma yi sabon slag.

(2) Rage lokacin induction narkewa tanderu

deoxidation. Bayan an narke slag, ƙara deoxidizer (lime foda: aluminum foda = 1: 2) zuwa ga slag surface don yadawa da deoxidation. A lokacin aikin deoxidation, ana iya amfani da foda na lemun tsami da foda na fluorite don daidaita danko na slag domin slag yana da ruwa mai kyau. Daidaita kayan aikin. Daidaita sinadarai na narkakkar karfe bisa ga sakamakon bincike, kuma abun cikin Si ya kamata a daidaita shi cikin mintuna 5-10 kafin a buga.

Auna zafin jiki kuma yi samfuran kofi zagaye. Auna zafin karfen da aka narkar da shi kuma yi samfurin kofi na zagaye don duba deoxidation na narkakken karfen (ko amfani da hanyar lanƙwasa don yin hukunci).

Saka alli silicate. Bayan narkakkar zafin jiki ya kai 15OOC ko sama da haka (maaunin zafin jiki), 0.2% calcium silicate ana saka shi don ƙara deoxidize, sa’an nan kuma ana ƙara deoxidizer zuwa saman slag kuma. Saka aluminum, bayan karfen zafin jiki ya kai 1500 ° C ko fiye, cire duk slag, sa’an nan kuma ƙara 0.07% cryolite foda (ko slagging cover agent) da kuma saka aluminum.

(3) Tatsin karfe da zuba

Karfe fita. Bayan shigar da aluminum, sai a motsa narkakken karfen sannan a matsa karfen bayan katsewar wutar lantarki. Bayan bugawa, ɗauki samfurori a cikin ladle don nazarin abubuwan da ke tattare da sinadarai na ƙãre narkakken ƙarfe. zubawa. Bayan dannawa, ƙara tokar ciyawa don rufe narkakkar saman saman don hana narkakkar ƙarfe daga iskar oxygen. Bayan an kashe narkakken karfen na tsawon mintuna 3-5, zafin jiki a cikin ladle ɗin shine 1460-1480 ° C, kuma yawan zafin jiki shine 1340-1380 ° C, ko ƙasa ko sama, dangane da buƙatun simintin.