Amfanin Sodium Cyanide a cikin Masana'antar Karfe da Ƙwarewar Rarraba

Gabatarwa

Sodium cyanide (NaCN), a matsayin ingantacciyar wakili mai haɗaɗɗiya da wakili na leaching, yana taka muhimmiyar rawa a cikin Masana'antu na Kayan karfe. Abubuwan sinadarai na musamman suna ba shi damar samar da barga masu ƙarfi tare da ions ƙarfe daban-daban, don haka cimma hakar, rabuwa, da tsarkake karafa. Wannan labarin zai bincika ainihin aikace-aikacen sodium Cyanide a cikin filin ƙarfe da kuma taƙaita mahimman wuraren aiki bisa ga kwarewa mai amfani.

I. Babban Amfanin Sodium Cyanide a cikin Masana'antar Karfe

1.Gold hakar (Tsarin Cyanidation don hakar Zinariya)

• {a'ida: Sodium cyanide yana amsawa da zinari a gaban iskar oxygen don samar da hadadden cyanide na gwal (kamar [Au(CN)₂]⁻). Ana samun gwal ɗin ta hanyar kunna carbon adsorption ko maye gurbin zinc.

• Abũbuwan amfãni: Yana da ƙarfin daidaitawa zuwa ƙananan nau'in zinare na zinariya da hadaddun ma'adanai, kuma ƙimar leaching na iya kaiwa fiye da 90%.

• Harka: Wani ma'adinin zinare ya karu da adadin dawo da gwal zuwa 92% ta hanyar inganta yawan taro sodium cyanide (0.05% -0.1%) da lokacin leaching (24-48 hours).

2.Electroplating da Metal Surface Jiyya

• Nufa: A matsayin ƙari a ciki Girkawa mafita, ana amfani da shi don electroplating karafa irin su jan karfe, zinc, da azurfa, wanda zai iya inganta daidaituwa da mannewa na shafi.

• Tsanani: Ana buƙatar sarrafa yawan ƙwayar cyanide sosai don guje wa ragowar da ya wuce kima, wanda zai iya haifar da gurɓataccen muhalli.

3.Rabuwar Karfe da Tsarkakewa

• Scenarios aikace-aikace: Zaɓi ƙura da ƙarfe da aka yi niyya (kamar nickel da cobalt) daga ma'adinan polymetallic, ko cire ions na ƙazanta (kamar ƙarfe da gubar).

• Abubuwan Fasaha: Cimma the stepwise complexation na daban-daban karafa ta daidaita pH darajar da sashi na Sodium cyanide.

II. Ƙwarewar Maɓalli da Ƙwarewar Fasaha a cikin Amfani da Sodium Cyanide

1.Control of Concentration and Dosage

• Doka ta Empirical: A lokacin leaching na zinariya, ƙaddamar da ƙwayar sodium cyanide yawanci shine 0.03% -0.1%, kuma yana buƙatar daidaitawa bisa ga kaddarorin ma'adinai (kamar abun ciki na carbon da abun ciki na sulfide).

• Harka: Wani mahakar ma'adinai ya gano cewa yawan shan sodium cyanide ya karu da yawa. Bayan bincike, an gano cewa sinadarin sulfur da ke cikin ma'adinan ya wuce misali. An warware matsalar bayan yin amfani da tsari na farko (gasashe ko oxidation).

2. Inganta Yanayin Leaching

• pH Darajar: Kula da yanayin alkaline (pH 10-11) na iya hana samar da iskar hydrogen cyanide kuma inganta yanayin. Ingantaccen Leaching a lokaci guda.

• Zafin jiki: Dumama mai dacewa (30-40 ° C) zai iya hanzarta amsawa, amma amfani da makamashi da farashi yana buƙatar daidaitawa.

3.Kare Muhalli da Gudanar da Tsaro

• Rashin Tsabtace ruwa: Yi amfani da hanyar chlorination na alkaline (sodium hypochlorite + sodium hydroxide) don lalata cyanide don tabbatar da cewa fitarwa ya dace da ma'auni (haɗin CN⁻ bai wuce 0.5 mg / L ba).

• Kariyar Kariya: Sanya tare da cikakken layin samarwa, tsarin kulawa ta atomatik, da na'urar yayyafawa ta gaggawa. Masu aiki suna buƙatar sanya suturar kariya ta sinadarai da abin rufe fuska.

III. Matsalolin gama gari da Magani

1.Hadarin Guba na Cyanide

• m Matakan: Tabbatar duba kullun kayan aiki akai-akai kuma ku guje wa hulɗar maganin cyanide tare da abubuwan acidic (don hana haɓakar iskar HCN mai guba mai guba).

• Maganin Gaggawa: Nan da nan kurkura wurin hulɗar fata tare da babban adadin ruwa mai tsabta. Idan an sha cikin haɗari, wanda aka azabtar yana buƙatar neman magani nan da nan kuma a yi masa allura da sodium thiosulfate don cirewa.

2. Rage Aikin Leaching

• Dalilin da Zai Iya: Rashin isashshen digiri na ma'adinai, bazuwar sodium cyanide (saboda haske ko yanayin zafi), da tsangwama na ions na ƙazanta (kamar gubar da tagulla).

• Solutions: Ƙara oxidant (kamar hydrogen peroxide) don inganta oxidation na tama, ko cire ƙazanta ta hanyar pretreatment.

IV. Abubuwan Gabatarwa da Madadin Fasaha

• Fasahar Leaching-Free Cyanide: Hanyoyin kore irin su hanyar thiourea da hanyar bioleaching suna fitowa a hankali, wanda zai iya rage haɗarin muhalli.

• Kulawa da hankali: Saka idanu na lokaci-lokaci na sigogi kamar ƙaddamar da sodium cyanide da ƙimar pH ta hanyar AI algorithms don cimma daidaitaccen sarrafawa.

Kammalawa

Sodium cyanide yana da babban inganci da haɗarin haɗari a cikin masana'antar ƙarfe. Aikace-aikacen ma'ana ya dogara da ƙirar tsarin kimiyya, kulawar tsaro mai tsauri, da ci gaba da haɓakar fasaha. Ta hanyar inganta sigogin aiki da ƙarfafawa Kariya na muhalli matakan, ƙimarsa za a iya ƙarawa da kuma rage haɗarin haɗari, inganta masana'antu don haɓakawa a cikin kore mai dorewa.