Ngaba i-carbon electrode, i-graphite electrode kunye ne-self-baking electrode kufuneka zisetyenziswe ngokuchanekileyo kwishishini le-arc elifakwe emanzini?

Uhlobo, ukusebenza kunye nokusetyenziswa kwe-electrode

Uhlobo lwe-Electrode

Ii-electrode zeCarbonaceous zingahlelwa zibe yi-carbon electrode, i-graphite electrode kunye ne-self-baking electrode ngokusetyenziswa kwazo kunye neenkqubo zokuvelisa.

I-carbon electrode yenziwe nge-low-ash anthracite, i-coke ye-metallurgical, i-pitch coke kunye ne-petroleum coke. Iqulunqwe ngomlinganiselo othile kunye nobukhulu bamasuntswana. Xa udibanisa, i-asphalt ye-binder kunye ne-tar ixutywe, kwaye umxube uxutywe ngokulinganayo kwiqondo lokushisa elifanelekileyo. Ukwenza, kwaye ekugqibeleni ukukhawuleza ukucima kwi-roaster. Inokwahlulwa ibe yi-electrode ye-graphite yendalo, i-electrode yegraphite eyenziweyo, i-carbon electrode kunye ne-carbon electrode ekhethekileyo.

I-electrode yegraphite (i-graphiteelectrode) yenziwe nge-petroleum coke kunye ne-pitch coke njengento ekrwada, kwaye emva koko ifakwe kwisithando sombane sokumelana nombane kunye nobushushu be-2273 ~ 2773K, kwaye yenziwe kwi-graphite electrode nge-graphitization. I-electrode yegraphite yahlulwe ngakumbi ngolu hlobo lulandelayo.

I-electrode eqhelekileyo yegraphite yamandla ivumela ukusetyenziswa kweeelectrode zegraphite ezinoxinano lwangoku olungaphantsi kwe-17 A/cm2, kwaye isetyenziswa ikakhulu kwiziko lombane eziqhelekileyo ezifana nokwenza intsimbi, ukucokisa isilicon, kunye nephosphorus etyheli.

Umphezulu we-anti-oxidation coated graphite electrode ugqunywe ngoluhlu olukhuselayo (i-graphite electrode antioxidant) eqhubayo kwaye ixhathisa i-oxidation yobushushu obuphezulu, okunciphisa ukusetyenziswa kwe-electrode ngexesha le-steelmaking (19% ~ 50%) kunye nokwandisa ubomi benkonzo ye-electrode (22% ~ 60%), ukunciphisa ukusetyenziswa kwamandla e-electrode.

I-electrode ye-graphite yamandla aphezulu ivumela ukusetyenziswa kwe-electrode ye-graphite kunye nokuxinana kwangoku kwe-18 ukuya kwi-25 A / cm2, esetyenziswa kakhulu kwii-ovens ze-arc zombane eziphezulu ze-steelmaking.

Iielectrode zegraphite ezinamandla aphezulu zivumela ukusetyenziswa kweeelectrode zegraphite ezinoxinano lwangoku olungaphezu kwe-25 A/cm2. Isetyenziswa kakhulu kwi-ultra-high power steelmaking arc furnaces zombane.

I-electrode yokubhaka (i-selfbakingelectrode) isebenzisa i-anthracite, i-coke, kunye ne-bitumen kunye ne-tar njengezinto eziluhlaza, ukwenza i-electrode paste kwiqondo lokushisa elithile, kwaye emva koko ulayishe i-electrode yokunamathisela kwi-electrode case efakwe kwisithando sombane (njengoko kubonisiwe kwi-FIG. eziko bayazenzela kwaye baphekwe. I-electrode enjalo ingasetyenziselwa ngokuqhubekayo, kwaye inokubunjwa ngokudibanisa umgca wecala elide kwaye inokukhutshwa kwi-diameter enkulu. I-electrode yokubhaka isetyenziselwa ngokubanzi ukuveliswa kwe-ferroalloy ngenxa yenkqubo yayo elula kunye neendleko eziphantsi.

Umzobo 1 Umzobo weSchematic weqokobhe le-electrode

I-1-electrode shell; Iqhekeza le-2-rib; Ulwimi olu-3-triangle

Ukusebenza kobugcisa obuphambili be-electrode

Izinto ze-electrode kufuneka zibe nezi mpawu zilandelayo ze-physicochemical:

I-conductivity ingcono, ukuxhathisa kuncinci, ukunciphisa ilahleko yamandla ombane, ukunciphisa ukuhla kwamandla ombane we-net omfutshane, kunye nokwandisa amandla ombane osebenzayo ukwandisa amandla echibi elinyibilikisiweyo;

Indawo yokunyibilika iphezulu;

I-coefficient yokwandiswa kwe-thermal incinci, xa iqondo lokushisa litshintsha ngokukhawuleza, akulula ukuguqulwa, kwaye uxinzelelo lwangaphakathi olubangelwa ukutshintshwa kweqondo lokushisa alukwazi ukuvelisa ukuqhekeka okulungileyo ukwandisa ukuchasana;

Yiba namandla aneleyo omatshini kumaqondo obushushu aphezulu;

Ukungcola kuphantsi kwaye ukungcola akungcolisi umnyibilikisi.

Iimpawu eziphambili zezobugcisa ze-carbon electrode, i-graphite electrode kunye ne-self-baking electrode iboniswe kwiThebhile 1 kunye neMifanekiso 2 kunye ne-3.

Itheyibhile yoku-1 yokusebenza kobugcisa be-Electrode

Umzobo 2 Utshintsho lwe-resistiveivity ye-carbon electrode kunye ne-graphite electrode kunye nobushushu

Umzobo 3 I-Thermal conductivity ye-carbon kunye ne-graphite electrode njengomsebenzi weqondo lokushisa

Ukukhethwa kwee-electrode kwishishini le-ferroalloy

Ii-electrodes ezizibhaka ngokwazo zisetyenziswa kakhulu kwi-iron alloy smelting, ukulungiswa kwe-ferrosilicon, i-silicon chromium alloy, i-manganese silicon alloy, i-carbon ferromanganese ephezulu, i-carbon ferrochrome ephezulu, i-carbon ferromanganese ephakathi kunye nephantsi, i-carbon ferrochrome ephakathi kunye nephantsi, i-silicon calcium alloy, i-tungsten iron Yima. Ii-electrodes ezizibhaka ngokwazo zikholisa ukunyusa imveliso yealloys, amabhanti entsimbi abe yikhabhoni, kwaye avelise ialloys zentsimbi kunye neentsimbi ezisulungekileyo ezinekhabhoni ephantsi kakhulu. Ukuba i-carbon ferrochrome, i-silicon yezoshishino kunye nesinyithi se-manganese, i-carbon okanye i-graphite electrode kufuneka isetyenziswe.

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為碳素电极、石墨电极和自焙电极三种.

碳素电极(carbonelectrode)是以低灰分的无烟煤、冶金焦、沥青焦和石油焦為原料，按一定的比例和粒度组成.混合时加入黏结剂沥.青和焦油，在适当的温度下搅拌均匀后压制成形，最后在焙烧炉缓慢焙烧制得。可分為天然石墨电极、人造石墨电极、碳电极以及特种碳素电极四类。

石墨电极(graphiteelectrode)以石油焦和沥青焦為原料制成碳素电极，再放到温14 石墨化电阻炉中，经石墨化而制成石墨电极„石墨电极又分為以下几。

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為18〜25A/cm2的石墨电极，主要用于炼钢的高功率电。

超高功率石墨电极允许使用电流密度大于25A/cm2的石墨电极。主要用于超高功率炼钢。

自焙电极(selfbakingelectrode)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)中依靠电流通过时所产生的焦耳热和炉内传导热，自行烧结焦化。边给结成形，且可焙烧成大直径的.