Raw ihe na mmepụta usoro nke graphite electrode
Graphite electrode bụ nnukwu okpomọkụ na-eguzogide graphite conductive ihe na-emepụta site petroleum igwakorita, agịga coke dị ka mkpokọta na coal bitumen dị ka ihe nkedo, nke a na-emepụta site na usoro nke usoro dị ka igwakorita, ịkpụzi, amịkpọ, impregnation, graphitization na n'ibu nhazi. ihe.
Grafite electrode bụ ihe dị mkpa na-eduzi okpomọkụ dị elu maka igwe eletrik. A na-eji electrode graphite tinye ike eletrik na ọkụ eletrik, na okpomọkụ dị elu nke arc na-emepụta n'etiti njedebe electrode na ụgwọ a na-eji dị ka ihe ọkụ ọkụ iji gbazee ụgwọ maka ịme ígwè. Igwe ọkụ ndị ọzọ na-agbaze ihe dị ka phosphorus odo, silicon ụlọ ọrụ mmepụta ihe, na abrasives na-ejikwa graphite electrodes dị ka ihe na-eduzi. A na-ejikwa ihe ndị dị mma na nke pụrụ iche anụ ahụ na kemịkal nke electrodes graphite n'ọtụtụ ebe na mpaghara ụlọ ọrụ ndị ọzọ.
Ngwa maka mmepụta nke electrodes graphite bụ mmanụ ala coke, agịga coke na coal tar pitch.
Coke mmanụ ala bụ ngwaahịa siri ike na-ere ọkụ nke a na-enweta site na ikpuchi ihe fọdụrụ na coal na pitch mmanụ ala. Agba bụ oji na porous, isi ihe bụ carbon, na ash ọdịnaya dị nnọọ ala, n'ozuzu n'okpuru 0,5%. Coke mmanụ ala bụ nke klaasị nke carbon grafitized dị mfe. Coke mmanụ ala nwere ọtụtụ ihe eji arụ ọrụ kemịkalụ na ụlọ ọrụ ọla. Ọ bụ isi akụrụngwa maka imepụta ngwaahịa graphite wuru na ngwaahịa carbon maka aluminum electrolytic.
Enwere ike kewaa coke mmanụ ala ụzọ abụọ: coke raw na calcined coke dị ka okpomọkụ ọgwụgwọ okpomọkụ si dị. Coke mmanụ ala mbụ enwetara site n'ịgba oge coking nwere nnukwu ihe na-agbanwe agbanwe, na ike ọrụ dị ala. A na-enweta coke calcined site na calcination nke raw coke. Ọtụtụ ụlọ nrụpụta na China na-emepụta naanị coke, a na-arụkwa ọrụ calcination na osisi carbon.
Enwere ike kewaa coke mmanụ n'ime nnukwu sọlfọ coke (nwere ihe karịrị 1.5% sọlfọ), ọkara sọlfọ coke (nwere 0.5% -1.5% sọlfọ), na obere sọlfọ coke (nwere ihe na-erughị 0,5% sọlfọ). A na-emepụtakarị mmepụta nke electrodes graphite na ngwaahịa graphite ndị ọzọ na-emepụta site na iji obere sọlfọ coke.
Coke agịga bụ ụdị coke dị elu nke nwere udidi fibrous doro anya, ọnụọgụ mgbasawanye ọkụ dị ala na eserese dị mfe. Mgbe agbajiri coke ahụ, enwere ike kewaa ya n'ime ibe ndị dị gịrịgịrị dịka udidi si dị (akụkụ akụkụ ya na-adịkarị karịa 1.75). Enwere ike ịhụ nhazi fibrous anisotropic n'okpuru microscope polarizing, ya mere a na-akpọ ya coke agịga.
Anisotropy nke physico-mechanical Njirimara nke agịga coke bụ ihe doro anya. Ọ nwere ezi eletriki na thermal conductivity yiri ogologo axis ntụziaka nke urughuru, na ọnụọgụ nke thermal mgbasa dị ala. Mgbe extrusion ịkpụzi, ogologo axis nke ọtụtụ ahụ na-ahaziri na extrusion direction. Ya mere, coke agịga bụ isi akụrụngwa maka imepụta electrodes graphite dị elu ma ọ bụ ike dị elu. Igwe elektrọn graphite emepụtara nwere obere resistivity, obere ọnụọgụ mgbasawanye ọkụ na ezigbo nguzogide ujo.
A na-ekewa coke agịga ka ọ bụrụ coke agịga nke sitere na mmanụ nke emepụtara site na mmanụ mmanụ na coke coke dabeere na coke nke sitere na akụrụngwa coal pitch a nụchara anụcha.
Coal tar bụ otu n'ime isi ngwaahịa a na-emepụta n'ime nhazi nke coal tar. Ọ bụ ngwakọta nke hydrocarbons dị iche iche, nwa na oke okpomọkụ, ọkara siri ike ma ọ bụ siri ike na okpomọkụ dị elu, ọ dịghị ebe mgbaze edozi, dị nro mgbe kpochara, wee gbazee, na njupụta nke 1.25-1.35 g / cm3. Dị ka ebe dị nro ya si dị, a na-ekewa ya na obere okpomọkụ, ọkara okpomọkụ na nnukwu okpomọkụ asphalt. Mkpụrụ asphalt na-ajụ oyi bụ 54-56% nke coal tar. Ngwakọta nke coal tar dị nnọọ mgbagwoju anya, nke metụtara njirimara nke coal tar na ọdịnaya nke heteroatoms, na-emetụtakwa usoro nhazi coking na ọnọdụ nhazi coal tar. Enwere ọtụtụ ihe na-egosi maka ịkọwapụta ụda coal tar, dị ka ihe na-adị nro bitumen, toluene insoluble (TI), quinoline insoluble (QI), ụkpụrụ coking, na coal pitch rheology.
A na-eji coal tar eme ihe dị ka ihe nkedo na ihe na-eme ka ọ bụrụ ihe na-emepụta carbon, na arụmọrụ ya nwere mmetụta dị ukwuu na usoro mmepụta na àgwà ngwaahịa nke ngwaahịa carbon. Asphalt a na-ekekọta n'ozuzu na-eji obere okpomoku ma ọ bụ nke na-ekpo ọkụ gbanwetụrụ asphalt nwere ebe dị nro na-agafeghị oke, uru coking dị elu, yana resin β dị elu. Onye na-eme ihe na-eme ihe bụ asphalt na-ajụ oyi na-enwe ebe dị nro dị ala, QI dị ala, yana ezigbo rheological Njirimara.
Oge nzipu: Sep-23-2019