Nkọwa ngwaahịa: graphite
Graphite ntụ ntụ dị nro, oji isi awọ, keruuru ma nwee ike imerụ akwụkwọ. Isi ike bụ 1-2, ma na-abawanye ruo 3-5 na mmụba nke adịghị ọcha n'akụkụ ụzọ kwụ ọtọ. Nnukwu ike ndọda bụ 1.9-2.3. N'okpuru ọnọdụ nke ikuku oxygen, ebe agbaze ya dị n'elu 3000 ℃, nke bụ otu n'ime mineral na-eguzogide okpomọkụ. N'ime ụlọ okpomọkụ, ihe ndị dị na kemịkalụ nke graphite ntụ ntụ na-adịtụ mma, na-adịghị edozi na mmiri, dilute acid, dilute alkali na organic solvents; ihe onwunwe nwere nnukwu okpomọkụ na-eguzogide na conductivity, na a pụrụ iji dị ka refractory, conductive ihe, eyi na-eguzogide ọgwụ na lubricating ihe.
N'ihi na ya pụrụ iche Ọdịdị, graphite nwere ndị na-esonụ e ji mara: 1. High okpomọkụ na-eguzogide: na-agbaze ebe nke graphite bụ 3850 ± 50 ℃, na esi ebe bụ 4250 ℃. Nke ahụ bụ, ọnụ ọgụgụ ọnwụ dị arọ na ọnụọgụ nke mgbasawanye ọkụ dị ntakịrị mgbe ị na-eji ultra-high okpomọkụ arc sintering, na ike nke graphite na-abawanye na mmụba nke okpomọkụ. Na 2000 ℃, ike nke graphite nwere okpukpu abụọ. 2. Lubricity: mmanu nke graphite dabere na nha graphite. Ka ọnụ ọgụgụ buru ibu, ka ọnụ ọgụgụ esemokwu dị ntakịrị, yana ka mma mmanu mmanu na-arụ ọrụ. 3. Nkwụsi ike nke kemịkalụ: graphite nwere ezigbo nkwụsi ike kemịkalụ na ụlọ okpomọkụ, na-eguzogide acid, alkali na organic mgbaze corrosion. 4. Plasticity: graphite nwere ezigbo ike ma nwee ike ịpịnye ya n'ime mpempe akwụkwọ dị mkpa. 5. Mgbochi ujo na-ekpo ọkụ: mgbe a na-eji graphite mee ihe na ụlọ okpomọkụ, ọ nwere ike iguzogide mgbanwe dị egwu nke okpomọkụ na-enweghị mmebi. Mgbe okpomọkụ na-ebili na mberede, olu nke graphite agaghị agbanwe nke ukwuu ma ọ gaghị enwe mgbawa.
Na-eji:
1. Dị ka ihe refractory: graphite na ngwaahịa ya nwere njirimara nke nguzogide okpomọkụ dị elu na ike dị elu. A na-ejikarị ha eme ihe maka nrụpụtagraphite cruciblen'ụlọ ọrụ metallurgical, ma na-ejikarị dị ka ihe nchebe maka nchara ingot na metallurgical oven lining.
2. Dị ka uwe na-eguzogide ọgwụ: graphite na-ejikarị eme ihe dị ka mmanu na ụlọ ọrụ igwe. Mmanụ lubricating anaghị adịkarị mma maka oke ọsọ, oke okpomọkụ na nrụgide dị elu.
3. Graphite nwere ezigbo nkwụsi ike nke kemịkal. A na-ejikarị ya eme ihe na ụlọ ọrụ petrochemical, hydrometallurgy, mmepụta acid-base, fiber sịntetik, mpempe akwụkwọ na mpaghara mmepụta ihe ndị ọzọ, nke nwere ike ịchekwa ọtụtụ ihe ígwè.
4. Enwere ike iji eserese dị ka ụzọ pensụl, pigmenti na onye na-egbuke egbuke. Mgbe nhazi pụrụ iche gasịrị, enwere ike ịme graphite ka ọ bụrụ ihe pụrụ iche dị iche iche maka iji ngalaba ụlọ ọrụ dị mkpa.
Oge nzipu: Mar-26-2021