Ta yaya za a yi amfani da na'urorin lantarki na carbon, graphite electrodes da na'urorin yin burodi da kai daidai a cikin masana'antar tanderun da aka nutsar da su?

Nau'i, aiki da amfani da lantarki

Nau'in Electrode

Carbonaceous lantarki za a iya rarraba zuwa carbon electrodes, graphite electrodes da kai-baking electrodes bisa ga amfani da masana'antu tafiyar matakai.

An yi na'urar lantarki ta carbon da ƙananan ash anthracite, coke na ƙarfe, farar coke da coke mai. Ya ƙunshi wani ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙwayar cuta. Lokacin da ake ƙarawa, ana haɗa kwalta da kwalta mai ɗaure, kuma ana motsawa daidai gwargwado a yanayin da ya dace. Ƙirƙiri, kuma a ƙarshe a hankali ana yin lissafin a cikin roaster. Za a iya kasu kashi na halitta graphite lantarki, wucin gadi graphite lantarki, carbon lantarki da musamman carbon lantarki.

graphiteelectrode (graphiteelectrode) an yi shi da coke na man fetur da kuma farar coke a matsayin ɗanyen abu, sannan a sanya shi a cikin tanderun juriya na graphitized tare da zafin jiki na 2273 ~ 2773K, kuma an sanya shi cikin lantarki mai graphite ta hanyar graphitization. An ƙara rarraba wutar lantarki mai graphite zuwa nau'i mai zuwa.

Lantarki na graphite na yau da kullun yana ba da damar yin amfani da na'urorin lantarki na graphite tare da ƙimar yau da kullun ƙasa da 17 A/cm2, kuma ana amfani da su galibi don wutar lantarki ta yau da kullun kamar yin ƙarfe, tace silicon, da phosphorus mai launin rawaya.

A saman da anti-oxidation mai rufi graphite lantarki da aka mai rufi da wani m Layer (graphite electrode antioxidant) wanda shi ne conductive da kuma resistant zuwa high zafin jiki hadawan abu da iskar shaka, wanda rage yawan lantarki amfani a lokacin steelmaking (19% ~ 50%) da kuma tsawaita rayuwar sabis. na lantarki (22% ~ 60%), rage yawan amfani da wutar lantarki.

Lantarki mai ƙarfi na graphite yana ba da damar amfani da na'urorin lantarki na graphite tare da yawa na yanzu na 18 zuwa 25 A/cm2, waɗanda galibi ana amfani da su a cikin manyan murhun baka na lantarki don yin ƙarfe.

Matsanancin ƙarfin lantarki na graphite yana ba da damar amfani da na'urorin lantarki masu graphite tare da yawa na yanzu sama da 25 A/cm2. Ana amfani da shi sosai a cikin tanderun baka na lantarki.

Na'urar yin burodi da kai (selfbakingelectrode) ta amfani da anthracite, coke, bitumen da tar a matsayin albarkatun kasa, yin manna electrode a wani yanayi mai zafi, sannan a loda wutar lantarki a cikin akwati na lantarki wanda aka dora a kan tanderun lantarki (kamar yadda aka nuna). a cikin FIG 1), A cikin tsarin samar da tanderun lantarki, zafin Joule da aka samar ta hanyar wutar lantarki da zafin wutar lantarki a cikin tanderun. mai son kai da coked. Irin wannan na'urar za a iya amfani da shi akai-akai, kuma ana iya samuwa ta hanyar haɗuwa da dogon gefen gefen kuma za'a iya harba shi cikin babban diamita. Ana amfani da lantarki mai yin burodi da kai don samar da ferroalloy saboda sauƙin tsari da ƙananan farashi.

Hoto 1 Tsarin tsari na harsashi na lantarki

1-harsashi na lantarki; 2-yankakken haƙarƙari; 3-harshen triangle

Babban aikin fasaha na lantarki

Ya kamata kayan lantarki su kasance suna da kaddarorin physicochemical masu zuwa:

Ƙarfafawa ya fi kyau, tsayayyar ya fi ƙanƙara, don rage asarar makamashin lantarki, rage raguwar ƙarfin lantarki na gajeren gidan yanar gizon, da kuma ƙara ƙarfin lantarki mai tasiri don ƙara ƙarfin narkakken tafkin;

Matsayin narkewa yana da girma;

Matsakaicin haɓakar haɓakar thermal ƙananan ƙananan ne, lokacin da yanayin zafi ya canza da sauri, ba shi da sauƙi a ɓata, kuma damuwa na ciki wanda canjin zafin jiki ya haifar ba zai iya haifar da fashe mai kyau don ƙara juriya ba;

Samun isasshen ƙarfin injina a babban yanayin zafi;

Najasa ba ta da ƙarfi kuma ƙazanta ba sa gurɓata narke.

Ana nuna mahimman kaddarorin fasaha na carbon electrode, graphite electrode da na'urar yin burodi da kai a cikin Table 1 da Figures 2 da 3.

Tebur 1 Ayyukan fasaha na Electrode

Hoto 2 Canjin resistivity na carbon electrode da graphite electrode tare da zafin jiki

Hoto 3 Matsayin zafin jiki na carbon da graphite electrodes a matsayin aikin zafin jiki

Zaɓin na'urorin lantarki a masana'antar ferroalloy

Ana amfani da na'urori masu yin burodi da kansu sosai a cikin ƙarfe na ƙarfe, gyaran gyare-gyaren ferrosilicon, silicon chromium alloy, manganese silicon alloy, high carbon ferromanganese, high carbon ferrochrome, matsakaici da ƙananan carbon ferromanganese, matsakaici da ƙananan carbon ferrochrome, silicon calcium gami, tungsten iron Jira. . Na'urorin yin burodi da kansu suna ƙara haɓaka samar da gami, bel ɗin ƙarfe zuwa cikin carbon, kuma suna samar da alluran ƙarfe da ƙarfe mai tsafta tare da ƙarancin abun ciki na carbon. Idan carbon ferrochrome, silicon masana'antu da manganese karfe, carbon ko graphite lantarki ya kamata a yi amfani da.

电极的种类、性能及其用途

电极种类

碳质电极按其用途及制作工艺不同可分为碳素电极、石墨电极和作工艺不同可分为

碳素电极(carbonelectrode)是以低灰分的无烟煤、冶金焦、沥青焦和石油焦为原料，按一定的比例和粒度组成.混合时加入黏结割成青和焦油，在适当的温度下搅拌均匀后压制成形，最后在焙烧炉中缓慢焙烧制得。

石墨电极(graphiteelectrode)以石油焦和沥青焦为原料制成碳素电极，再放到温度为2273〜2773K的石墨化电阻炉中，经为2273

普通功率石墨电极允许使用电流密度低于17A/cm2的石墨电极，主要用于炼钢、炼硅、炼黄磷等的普通功率电炉。

抗氧化涂层石墨电极表面涂覆既能导电又耐高温氧化的保护层(石墨电极抗氧化剂)，降低炼钢时的电极消耗(19%〜50%),延长电极的使用寿命(22%〜60%),降低电极的电能消耗。

高功率石墨电极允许使用电流密度为18〜25A/cm2的石墨电极，主要用于主要用于电钢的高于

25 ga / cm2 的的. 主要用于超高功率炼钢电弧炉. 主要用于超高功率炼钢电弧炉.

自焙电极(self bakingelectrode)用无烟煤、焦炭以及沥青和焦油为原料，在一定温度下制成电极糊，然后把电极糊装入已安装在电炉上的电极壳中(如图1所示)，在电炉生产过程中依靠电流通过时所产生的焦耳热和炉内传导热，自行结焦化。边给给成形，且可焙烧成大直径的。自焙电极不仅工艺简单，成本也低，因此被广泛用于铁合金生产。