Maɓallin Maɓalli Suna Taimakawa Ƙimar Farko na Zinare a Sodium Cyanide Leaching

Gabatarwa

Sodium cyanide leaching wata hanya ce da ake amfani da ita sosai a masana'antar haƙar zinare don fitar da zinare daga ma'adinai. Duk da haka, ingancin dawo da zinare a wannan tsari yana da tasiri ta hanyar wasu muhimman sigogi. Fahimtar waɗannan sigogi yana da mahimmanci don inganta tsarin cire zinare, ƙara dawo da zinare, da rage farashin samarwa. Wannan labarin zai bincika manyan abubuwan da ke tasiri ga ƙimar dawo da zinare yayin cire zinare .

Nika Mai Kyau

Kafin aiwatar da leaching na cyanide, ana buƙatar taman gwal da aka riga aka gyara, tare da niƙa shine muhimmin mataki. Makasudin niƙa shine don cimma daidaituwar monomer na zinari, raba shi da ma'adanai na gangue gwargwadon yiwuwa. Lokacin da zinariyar da ke cikin ma'adinan ta kasance da kyau a ciki ko a rufe, kyakkyawan niƙa mai dacewa yana da mahimmanci. Idan niƙan ya yi ƙanƙara sosai, ƙwayar gwal ɗin na iya zama ba za a fallasa su gaba ɗaya ba, wanda zai haifar da rashin cikawa da ƙarancin dawo da gwal. A gefe guda, kan - niƙa ba kawai yana ƙara farashin niƙa ba amma yana haifar da mummunan tasiri. Abubuwan da ke kan ƙasa na iya shigar da ƙarin ƙazanta masu ƙyalli a cikin leach ɗin, wanda zai iya amsawa tare da maganin cyanide, wanda zai haifar da ɓarna na cyanide. Bugu da ƙari, kan - niƙa na iya haifar da matsaloli a cikin rabuwar ruwa mai ƙarfi, kuma yana iya haifar da asarar narkar da zinariya. Gabaɗaya, don taman gwal tare da zinari mai kyau - hatsi na halitta, girman ƙwayar niƙa na - 38 μm tare da rabon abun ciki na 75% na iya tabbatar da ingantaccen tasirin leaching yayin sarrafa farashin niƙa.

Sashi na sodium cyanide

Adadin Sodium Cyanide da aka ƙara a cikin tsarin cirewa yana da tasiri sosai akan ƙimar dawo da zinare. A cikin wani takamaiman iyaka, adadin cyanide yana daidai da ƙimar cirewa na ɓangaren litattafan ma'adinan zinare. Lokacin da abun ciki na cyanide ya yi ƙasa, tasirin cirewa na zinare ba shi da kyau, kuma saurin cirewa yana da jinkiri. Wannan ba wai kawai yana ƙara lokacin da ake buƙata don cirewa ba, har ma yana iya haifar da rashin cikakken cirewa na zinare, don haka yana rage ƙimar dawo da zinare. Duk da haka, idan adadin cyanide ya yi yawa, bayan ingancin cirewa na zinare ya kai wani matsayi, ƙaruwar ƙimar dawo da zinare ba zai bayyana ba. Madadin haka, zai haifar da ɓatar da cyanide kuma ya ƙara farashin samarwa. Misali, lokacin cire tarin zinare daga ma'adinan zinare mai girman ƙwayar cuta, Yawan sodium cyanide ya fi dacewa a 1.5 - 3.0 kg/t. A cikin ainihin samarwa, masana'antun haƙar ma'adinai suna buƙatar tantance adadin sodium cyanide da ya dace bisa ga halayen gwaje-gwajen ma'adinan da fa'idodi.

Adadin Lemun tsami

Ana ƙara lemun tsami zuwa maganin cyanide a matsayin alkali mai karewa. Cyanide ions a cikin bayani suna da kaddarorin sinadarai marasa ƙarfi kuma suna da sauƙin canzawa kamar iskar hydrogen cyanide, wanda zai haifar da asarar maganin sodium cyanide. Ta hanyar ƙara lemun tsami, ana iya kiyaye ɓangaren litattafan almara a daidaitaccen alkalinity, wanda ke taimakawa wajen inganta kwanciyar hankali na maganin cyanide. Dangane da bincike na gwaji, adadin leaching na zinari shima yana inganta sosai bayan ƙara lemun tsami. Lokacin da adadin lemun tsami da aka ƙara shine 2 kg/t da sama, ƙimar pH na ɓangaren litattafan almara yana tsakanin 11 - 12. kuma adadin leaching na gwal a cikin ɓangaren litattafan almara yana da inganci. Duk da haka, idan adadin lemun tsami ya yi girma sosai, yana iya haifar da mummunan tasiri a kan tsarin leaching, kamar canza yanayin jiki da sinadarai na ɓangaren litattafan almara, wanda zai iya rinjayar abin da ke tsakanin cyanide da zinariya.

Leaching Pulp Concentration

Matsakaicin ɓangaren leaching wani abu ne wanda ke shafar saurin leaching kai tsaye da ingancin gwal. Gabaɗaya magana, lokacin da maida hankali na ɓangaren litattafan almara ya yi ƙasa, ƙarancin ɓangaren litattafan almara yana da kyau, wanda ke ba da damar haɗuwa tsakanin maganin cyanide da gwal ɗin gwal, don haka tasirin leaching na tattara gwal zai kasance mafi girma. Duk da haka, wannan yanayin yana buƙatar ƙara yawan adadin da aka ƙara. A lokaci guda kuma, girman kayan aiki da kudin zuba jari kuma za su karu. Akasin haka, idan ƙwayar ɓangaren litattafan almara ya yi yawa, dankon ɓangaren litattafan almara zai ƙaru, ruwa zai zama mara kyau, wanda zai hana yaduwar maganin cyanide da haɗuwa tare da ɓangarorin gwal, wanda zai haifar da raguwar saurin leaching da ingancin zinariya. Don taman gwal tare da tarar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar cuta za a iya kiyaye shi a kusan 20% - 33% don tabbatar da sakamako mai kyau. A cikin ainihin samarwa, tsire-tsire masu hakar ma'adinai na iya daidaita daidaituwa daidai da takamaiman yanayin, amma bai kamata ya yi girma ba.

Lokacin Leaching

Lokacin leaching kuma muhimmin abu ne da ke shafar ƙimar dawo da gwal a cikin tsarin cyanidation. Zaɓin lokacin leaching mai dacewa zai iya tabbatar da cewa barbashi na gwal sun narkar da cikakke. Koyaya, yayin narkar da barbashi na gwal, sauran ƙazanta a cikin ɓangaren litattafan almara kuma za su ci gaba da narkewa. Yayin da lokacin leaching ya tsawaita, ci gaba da rushewa da tara waɗannan ƙazanta na iya tsoma baki tare da rushewar zinariya, har ma da hana leaching na zinariya. Bugu da kari, ma - dogon leaching lokaci yana buƙatar daidaita manyan kayan aikin leaching da shafuka, wanda zai ƙara farashin samarwa. Don taman gwal tare da tarar ƙwayar ƙwayar ƙwayar cuta, yana da kyau a kiyaye lokacin leaching na cyanidation a kusan awanni 4. Idan lokacin leaching ya wuce sa'o'i 24, ana iya hana leaching na zinare, kuma adadin ion zinariya a cikin ruwa mai daraja shima zai ragu.

Kammalawa

A cikin tsarin cire zinare na sodium cyanide don cire zinare, sigogi kamar niƙa mai kyau, yawan sodium cyanide, adadin lemun tsami, yawan cire ɓawon burodi, da lokacin cirewa duk suna taka muhimmiyar rawa wajen tantance ƙimar dawo da zinare. Masana'antun haƙar ma'adinai ya kamata su gudanar da gwaje-gwajen faneficiation dalla-dalla bisa ga halayen ma'adinan su don inganta waɗannan sigogi. Ta hanyar yin hakan, ba wai kawai za su iya inganta ƙimar dawo da zinare ba, har ma da rage farashin samarwa da tasirin muhalli, don cimma ci gaba mai ɗorewa a masana'antar haƙar zinare.