Usoro mmepụta elektrọd graphite

Usoro mmepụta ihe na usoro mmepụta nke graphite electrode

Electrode graphite bụ ihe na-eguzogide okpomọkụ nke graphite na-eduzi nke sitere na mmanụ ala, coke agịga dị ka mkpokọta na bitumen coal dị ka ihe na-ejikọ, nke a na-emepụta site na usoro dị iche iche dịka ịcha, ịkpụzi, ịchacha, itinye ihe na nhazi igwe.

Elektrọd graphite bụ ihe dị mkpa maka imepụta ígwè eletrik. A na-eji elektrọd graphite etinye ike eletrik na ọkụ eletrik, a na-ejikwa okpomọkụ dị elu nke arc dị n'etiti njedebe elektrọd na chajị ahụ na-emepụta dị ka isi iyi okpomọkụ iji gbazee chajị maka imepụta ígwè. Oven ndị ọzọ na-esi ísì ihe dị ka phosphorus odo odo, silicon ụlọ ọrụ mmepụta ihe, na abrasives na-ejikwa elektrọd graphite dị ka ihe na-eduzi. A na-ejikwa ihe ndị dị mma na nke pụrụ iche nke elektrọd graphite eme ihe n'ọtụtụ ebe na ngalaba ụlọ ọrụ ndị ọzọ.

Ihe ndị e ji emepụta elektrọd graphite bụ petroleum coke, agịga coke na coal tar pitch.

Mmanụ kọke bụ ngwaahịa siri ike nke a na-enweta site na coking coal residue na petroleum pitch. Agba ya bụ oji ma nwee oghere, ihe bụ isi bụ carbon, ọdịnaya ntụ ya dịkwa obere, n'ozuzu ya na-erughị 0.5%. Mmanụ kọke so na klas nke carbon graphitized dị mfe. Mmanụ kọke nwere ọtụtụ ojiji na ụlọ ọrụ kemịkalụ na metallurgical. Ọ bụ isi ihe eji emepụta ngwaahịa graphite arụrụ arụ na ngwaahịa carbon maka electrolytic aluminum.

Enwere ike kewaa koke mmanụ ụgbọala ụzọ abụọ: koke raw na koke calcined dịka okpomọkụ ọgwụgwọ okpomọkụ si dị. Koke mmanụ ụgbọala mbụ e nwetara site na koke oge na-adịghị anya nwere ọtụtụ ihe ndị na-agbanwe agbanwe, ike igwe dịkwa ala. A na-enweta koke calcined site na koke raw. Ọtụtụ ụlọ ọrụ mmepụta ihe na China na-emepụta naanị koke, a na-arụkwa ọrụ calcination na-abụkarị n'ụlọ ọrụ carbon.

Enwere ike kewaa koke mmanụ ala ụzọ abụọ: koke sọlfọ dị elu (nwere ihe karịrị sọlfọ 1.5%), koke sọlfọ dị ọkara (nwere sọlfọ 0.5%-1.5%), na koke sọlfọ dị obere (nwere ihe na-erughị sọlfọ 0.5%). A na-ejikarị koke sọlfọ dị ala emepụta mmepụta nke elektrọd graphite na ngwaahịa graphite ndị ọzọ e ji aka rụọ.

Coke agịga bụ ụdị coke dị elu nke nwere udidi fibrous doro anya, obere oke mgbasa okpomọkụ na mfe eserese. Mgbe coke gbajiri, enwere ike kewaa ya n'ime iberibe dị gịrịgịrị dịka udidi si dị (oke akụkụ ya na-adịkarị karịa 1.75). Enwere ike ịhụ nhazi anisotropic fibrous n'okpuru igwe onyonyo polarizing, ya mere a na-akpọ ya coke agịga.

Anisotropy nke njirimara physico-mechanical nke coke agịga pụtara ìhè nke ukwuu. O nwere ezigbo eletriki na okpomọkụ conductivity nke yiri ntụziaka ogologo axis nke ihe ahụ, yana oke nke mgbasawanye okpomọkụ dị ala. Mgbe a na-akpụzi extrusion, a na-ahazi axis ogologo nke ọtụtụ ihe ahụ n'akụkụ extrusion. Ya mere, coke agịga bụ ihe dị mkpa maka imepụta elektrọd graphite dị elu ma ọ bụ nke dị elu. Elektrọd graphite emepụtara nwere obere iguzogide, obere oke mgbasa okpomọkụ na ezigbo iguzogide ujo okpomọkụ.

A na-ekewa coke agịga n'ime coke agịga e ji mmanụ mee nke sitere na ihe fọdụrụ n'ime mmanụ na coke agịga e ji kol mee nke sitere na ihe ndị e ji kol mee nke a na-emepụta nke ọma.

Kol tar bụ otu n'ime ihe ndị bụ isi e ji eme nhazi miri emi nke kol tar. Ọ bụ ngwakọta nke ọtụtụ hydrocarbons dị iche iche, ojii na okpomọkụ dị elu, ọkara siri ike ma ọ bụ siri ike na okpomọkụ dị elu, enweghị ebe agbaze edobere, a na-eme ka ọ dị nro mgbe a kpochara ya ọkụ, wee gbazee, na njupụta nke 1.25-1.35 g/cm3. Dịka ebe ọ na-eme ka ọ dị nro si dị, a na-ekewa ya n'ime obere okpomọkụ, okpomọkụ dị n'etiti na asfalt dị elu. Mkpụrụ asfalt dị n'etiti okpomọkụ bụ 54-56% nke kol tar. Ihe mejupụtara kol tar dị oke mgbagwoju anya, nke metụtara ihe onwunwe nke kol tar na ọdịnaya nke heteroatoms, sistemụ usoro coking na ọnọdụ nhazi kol tar na-emetụtakwa ya. E nwere ọtụtụ ihe ngosi maka ịkọwapụta kol tar pitch, dị ka bitumen softening point, toluene insolubles (TI), quinoline insolubles (QI), uru coking, na coal pitch rheology.

A na-eji kol tar eme ihe dị ka ihe na-ejikọ ma na-etinye mmiri n'ime ụlọ ọrụ carbon, arụmọrụ ya na-emetụtakwa usoro mmepụta na ịdị mma nke ngwaahịa carbon. Asphalt nke na-ejikọta ihe na-ejikarị asphalt nke dị n'etiti okpomọkụ ma ọ bụ nke dị n'etiti okpomọkụ nke nwere ebe dị nro dị ala, uru coking dị elu, na resin β dị elu. Ihe na-etinye ihe na-etinye ihe na-etinye ihe na-etinye ihe na-etinye ihe na-etinye ihe na-eme ka ihe dị nro dị ala, obere QI, na ezigbo ihe ndị dị na rheological.