Enwere ụzọ igwe, kemịkalụ, na electrochemical iji wepụ ọnụ ọgụgụ oxide nke ọkpọkọ igwe anaghị agba nchara.

N'ihi mgbagwoju anya nke ngwongwo oxide nke ọkpọkọ igwe anaghị agba nchara nke ịdị ọcha, ọ dịghị mfe iwepụ ọnụ ọgụgụ oxide n'elu, kamakwa ime ka elu dị elu dị elu nke ịdị ọcha na ịdị nro.Mwepụ nke ọnụ ọgụgụ oxide na ọkpọkọ igwe anaghị agba nchara na-emekarị nzọụkwụ abụọ, otu bụ pretreatment, na nzọụkwụ nke abụọ bụ iwepụ ash na slag.

Ntụle oxide pretreatment nke ịdị ọcha igwe anaghị agba nchara ọkpọkọ na-eme ka oxide ọnụ ọgụgụ efu, na mgbe ahụ ọ dị mfe wepụ site pickling.Enwere ike kewaa usoro ọgwụgwọ n'ime ụzọ ndị a: usoro ọgwụgwọ ịgbaze alkaline nitrate.Agbazekwa alkaline nwere 87% hydroxide na 13% nitrate.Ekwesịrị iji nlezianya chịkwaa oke nke abụọ dị na nnu a wụrụ awụ ka nnu ahụ a wụrụ awụ wee nwee ike oxidizing kacha sie ike, ebe mgbaze, na viscosity kacha nta.N'ime usoro mmepụta, naanị sodium nitrate ọdịnaya abụghị ihe na-erughị 8% (wt).A na-eme ọgwụgwọ ahụ n'ime ọkụ bat nke nnu, okpomọkụ bụ 450 ~ 470℃, na oge bụ 5 nkeji maka ferritic igwe anaghị agba nchara na 30 nkeji maka austenitic igwe anaghị agba nchara.N'otu aka ahụ, ígwè oxides na spinels nwekwara ike ịbụ oxidized site na nitrates na-efunari trivalent iron oxides, nke na-adị mfe wepụ site pickling.N'ihi mmetụta dị elu na-ekpo ọkụ, oxides ndị na-apụta na-ewepụ akụkụ ụfọdụ wee banye n'ime bat ahụ n'ụdị sludge.Ala nke ọkụ.

Usoro nhazi nhazi nke alkaline nitrate: nkwụsịtụ uzuoku→ikpo ọkụ (150-250℃Oge 20 ~ 30 min)→ọgwụgwọ nnu a wụrụ awụ→mmiri na-emenyụ→ịsacha mmiri ọkụ.Ngwọta nnu a wụrụ awụ adịghị mma maka mgbakọ nwere oghere weld ma ọ bụ crimping.Mgbe a na-ewepụ akụkụ ndị ahụ n'ọkụ nnu gbazere na mmiri menyụọ, a ga-efesa alkali na-egbuke egbuke na alụlụ nnu, n'ihi ya, e kwesịrị ịnakwere ụdị don miri emi maka imenyụ mmiri.tankị na-emenyụ mmiri na-adịghị agbasa.Mgbe mmiri na-emenyụ, buru ụzọ bunye nkata akụkụ ahụ n'ime tank, kwụsị n'elu elu nke kwụ ọtọ, mechie mkpuchi tank, wee belata nkata ahụ n'ime mmiri ruo mgbe ọ ga-emikpu.

Alkaline potassium permanganate pretreatment: ngwọta ọgwụgwọ nwere sodium hydroxide 100→125g / L, sodium carbonate 100→125g/L, potassium permanganate 50g/L, ngwọta okpomọkụ 95 ~ 105℃, oge ọgwụgwọ 2 ~ 4 hour.Ọ bụ ezie na ọgwụgwọ alkaline potassium permanganate adịghị mma dị ka ọgwụgwọ nnu a wụrụ awụ, uru ya bụ na ọ dabara maka mgbakọ na-eji akwa welded ma ọ bụ crimping.

Iji tọpụ ọnụ ọgụgụ oxide, a na-anabata acid siri ike na-esote maka nhazi ya site na usoro ntinye.

Iji gbochie acid ka ọ gbazee ígwè isi, a ghaghị ịchịkwa oge imikpu na okpomọkụ acid nke ọma.