Muhimmin Matsayin Sodium Hydroxide a Masana'antar Karfe

A cikin babban yanki mai sarkakiya na masana'antar ƙarfe , sodium hydroxide (NaOH), wanda aka fi sani da caustic soda ko lye, yana taka rawa mai yawa kuma ba makawa. Wannan babban sinadarin alkaline, wanda ake samu a cikin sifofi masu ƙarfi (kamar flake ko granular) da ruwa, muhimmin abu ne a cikin hanyoyin ƙarfe daban-daban, tun daga haƙo ƙarfe daga ma'adanai har zuwa kammala kayayyakin ƙarfe na ƙarshe.

1. sarrafa ma'adinai da hakar ma'adinai

1.1 Juyawa zuwa Gishiri Mai narkewa

Ɗaya daga cikin manyan ayyukan sodium hydroxide a fannin ƙarfe shine mayar da abubuwan da ke cikin ma'adanai zuwa gishiri mai narkewa. Wannan yana da mahimmanci domin yana ba da damar raba ƙarfe da ake so daga ƙazanta mara narkewa da ke cikin ma'adinan. Misali, a cikin cire tungsten, aikin yana farawa da gasa tungsten - mai ɗaukar ma'adinan, kamar scheelite ko wolframite, tare da sodium hydroxide ko sodium Carbon ate. Wannan tsarin gasa yana canza ma'adanai na tungsten zuwa sodium tungstate mai narkewa. Daga nan za a iya ƙara sarrafa sodium tungstate mai narkewa, a raba shi da ragowar da ba ya narkewa, sannan a ƙarshe a mayar da shi zuwa tungsten mai tsarki ta hanyar halayen sinadarai masu zuwa.

1.2 Tsarin Leaching

Hakanan ana amfani da sodium hydroxide a cikin ayyukan leaching. Ga wasu ma'adanai na ƙarfe, leaching tare da mafita na sodium hydroxide na iya narkar da ƙimar ƙarfe da zaɓin. Wannan yana da dacewa musamman ga ƙarancin daraja ko hadaddun ma'adanai inda hanyoyin narkewar gargajiya ba za su yi tasiri ba. A cikin hakar aluminum daga bauxite tama ta hanyar Bayer, ana amfani da sodium hydroxide don fitar da alumina. Bauxite ya ƙunshi ƙazanta irin su baƙin ƙarfe oxides, silica, da titanium dioxide. Lokacin da aka bi da bauxite tare da zafi, maida hankali sodium hydroxide bayani, alumina yana amsawa don samar da sodium aluminate mai narkewa, yayin da yawancin ƙazanta ke zama maras narkewa kuma ana iya raba su ta hanyar tacewa.

2. Tace Karfe

2.1 Cire Najasa

A lokacin tace ƙarfe , sodium hydroxide yana aiki a matsayin wakili mai ƙarfi don cire ƙazanta daban-daban daga ƙarfe. Yana iya amsawa da oxides, sulfides, da sauran ƙazanta marasa ƙarfe da ke kan saman ko a cikin matrix na ƙarfe. Misali, a cikin tace jan ƙarfe, ana iya amfani da sodium hydroxide don cire ƙazanta na jan ƙarfe. Lokacin da aka yi wa jan ƙarfe da ƙazanta na oxide magani da sodium hydroxide, ana samun redox reaction. Ions na hydroxide suna rage jan ƙarfe oxide zuwa jan ƙarfe, kuma a lokaci guda, suna samar da gishirin sodium mai narkewa tare da wasu ƙazanta marasa ƙarfe, waɗanda za a iya cire su cikin sauƙi. Wannan tsari yana taimakawa wajen inganta tsarki da ingancin jan ƙarfe, yana haɓaka watsa wutar lantarki da halayen injiniya.

2.2 Taimakon Gyaran Electrolytic

A cikin tsarin gyaran gyare-gyare na lantarki, sodium hydroxide na iya taka rawa wajen kiyaye kwanciyar hankali na electrolyte da kuma sauƙaƙe ƙaddamar da ƙarfe mai tsabta a cathode. Ga wasu karafa, kamar zinc, a cikin baho na alkaline electroplating, ana amfani da sodium hydroxide azaman wakili mai rikitarwa da gishiri mai ɗaukar nauyi. Yana hadawa tare da ion zinc don samar da ion zincate, wanda ke taimakawa wajen kiyaye plating bath kuma yana inganta aikin wanka. Wannan yana haifar da ƙarin daidaituwa na tutiya akan cathode, yana haifar da ingantaccen suturar zinc mai inganci.

3. Maganin Sama

3.1 Ragewa da Tsaftacewa

Filayen ƙarfe galibi suna da gurɓatattun abubuwa kamar mai, mai, da sauran abubuwan da ke buƙatar cirewa kafin a ci gaba da sarrafawa. Sodium hydroxide wakili ne mai tasiri mai ragewa. Yana amsawa tare da esters na fatty acid da ke cikin mai da greases ta hanyar da ake kira saponification. Misali, lokacin da stearic acid esters a cikin mai kayan lambu suka amsa da sodium hydroxide, suna samar da ruwa - sodium stearate mai narkewa, wanda akafi sani da sabulu, da glycerol. Wannan ya sa ya yiwu a wanke gurɓataccen ruwa da ruwa, yana barin ƙasa mai tsabta. Wannan tsari na tsaftacewa yana da mahimmanci don ayyuka na gaba kamar su electroplating, zanen, ko walda, kamar yadda tsaftataccen wuri yana tabbatar da mafi kyawun mannewa na sutura ko haɗin gwiwa.

3.2 Shirye-shiryen Etching da Surface

Ana kuma amfani da sodium hydroxide a cikin hanyoyin etching na ƙarfe. Ga aluminum da ƙarfensa, ana amfani da sodium hydroxide sosai don etching na alkali, wanda galibi ana yin sa kafin anodizing ko wasu hanyoyin gyaran saman . Etching ɗin da sodium hydroxide ke yi yana haifar da yanayin saman da ya dace kuma mai tsabta akan aluminum alloy, yana ƙara yankin saman da inganta mannewar rufin da ke biyo baya. Ana iya sarrafa yawan etching ta hanyar daidaita yawan sodium hydroxide, zafin jiki, da lokacin fallasa.

4. Desulfurization a Karfe da sauran Karfe Production

A cikin samar da ƙarfe da wasu karafa, sulfur ƙazanta ce da ba a so saboda yana iya haifar da ɓarna a cikin ƙarfe, yana rage kaddarorin injinsa da walƙiya. Ana iya amfani da sodium hydroxide azaman wakili na desulfurizing. A cikin ƙarfe - yin tsari, lokacin da aka ƙara sodium hydroxide zuwa narkakkar ƙarfe, yana amsawa da sulfur don samar da sodium sulfide. Sodium sulfide da aka kafa ba shi da narkewa a cikin narkakkar karfe kuma ana iya cire shi ta hanyar ayyukan slagging. Wannan yana taimakawa inganta ingancin karfe da sauran karafa ta hanyar rage abun ciki na sulfur zuwa matakan karbuwa.

5. Matsayi a cikin Tsarin Electrochemical

5.1 Electrolysis na Aluminum

A cikin masana'antar aluminum na zamani, tsarin Hall - Héroult, hanyar farko don samar da aluminum, ya dogara da tsarin lantarki. Kodayake babban electrolyte shine cakuda cryolite da alumina, sodium hydroxide na iya kasancewa a cikin ƙananan adadi a wasu bambance-bambancen tsarin ko a cikin matakan farko na jiyya. Sodium hydroxide na iya rinjayar halayen wutar lantarki da kuma halayen sinadaran da ke faruwa a wayoyin lantarki. Yana taimakawa wajen sauƙaƙe gudanawar halin yanzu ta hanyar lantarki, wanda ke da mahimmanci ga bazuwar alumina cikin aluminum da oxygen a cathode da anode bi da bi.

5.2 Sauran Electrochemical Metal Deposition da Farfadowa

Sodium hydroxide kuma ana amfani da shi a wasu matakai na lantarki don ajiyar ƙarfe da dawo da su. Alal misali, a cikin electrodeposition na wasu karafa daga mafita, sodium hydroxide za a iya amfani da daidaita pH na electrolyte bayani. Wannan gyare-gyare na pH na iya samun tasiri mai mahimmanci akan halayen electrochemical, abubuwan da ke haifar da tasiri irin su yawan adadin ƙarfe na ƙarfe, ingancin ma'aunin ƙarfe da aka ajiye, da zaɓin ƙaddamar da ƙarfe lokacin da ions ƙarfe da yawa ke samuwa a cikin bayani.

A ƙarshe, sodium hydroxide wani sinadari ne mai mahimmanci a masana'antar ƙarfe. Amfaninsa daban-daban a fannin sarrafa ma'adinai , tace ƙarfe, gyaran saman ƙasa, cire sulfurization, da hanyoyin lantarki suna ba da gudummawa sosai ga samar da ƙarfe masu inganci da kayayyakin ƙarfe. Yayin da masana'antar ƙarfe ke ci gaba da bunƙasa, rawar da sodium hydroxide ke takawa za ta ci gaba da kasancewa mai mahimmanci, tare da ci gaba da bincike da haɓakawa da aka mayar da hankali kan inganta amfani da shi da kuma bincika sabbin aikace-aikace don inganta inganci da rage tasirin muhalli.