Tsarin dawo da sinadarin sodium sulfate a cikin samar da batirin lithium

A cikin tsarin sake amfani da batirin lithium na sharar gida da batirin lithium iron phosphate, ba makawa sulfuric acid da caustic soda za a mayar da su zuwa gishirin sodium sulfate saboda buƙatun fasaha. Maganin da aka yi amfani da shi wanda ke ɗauke da sodium sulfate ya haɗa da maganin dawo da tsarin gishirin lithium, maganin bayan haɗa nickel-cobalt na ternary, ruwan gishirin kafin magani, maganin bayan hazo na lithium iron phosphate, ruwan gishirin lithium iron phosphate, maganin bayan hazo na lithium lithium ta hanyar gishirin lithium, maganin da ya rage na cire gishirin nickel-cobalt-manganese, maganin bayan haɗa nickel-cobalt-manganese, da sauransu. Waɗannan maganin ana tsarkake su kai tsaye ko a cikin tsarin fitar da MVR, kuma mafi kyawun crystallization da bushewa don samar da samfuran sodium sulfate marasa ruwa. Babban tsarin samarwa shine kamar haka:

1. Haɗa ruwan
Ruwan hada nickel-cobalt na Ternary, ruwan fitar da ruwa da aka riga aka yi wa magani, ruwan lithium iron phosphate bayan ya daidaita lithium, ruwan fitar da ruwa na lithium iron phosphate, gishirin lithium bayan ya daidaita lithium nickel cobalt manganese da aka cire gishirin nickel, ruwan hada nickel cobalt manganese da sauran ruwaye masu gauraya.

2. Cire ƙazanta da kuma tacewa
Bayan an shirya maganin sodium sulfate ta hanyar amfani da ruwa mai alkali + zurfin sodium sulfide don cire ƙarfe masu nauyi (danna tace ƙaramin adadin nickel da cobalt slag, mayar da shi don amfani da shi), daidaita PH zuwa 5~7; Bayan an cancantar nazarin, ana shigar da tankin ruwa mai ɗanɗano, kuma tankin ruwa mai ɗanɗano yana taka rawar adanawa da daidaita ruwan ɗanɗano don biyan buƙatun mai fitar da ruwa mai sharar MVR. Tankin ruwa mai ɗanɗano yana da famfon ruwa mai ɗanɗano. Famfon ruwa mai ɗanɗano yana jigilar ruwan sodium sulfate daidai gwargwado zuwa tsarin maganin ƙafewa. Ana daidaita bawul ɗin sarrafawa bayan famfon ruwa mai ɗanɗano don kiyaye daidaito tsakanin adadin ɗaga ruwan ɗanɗano da adadin ƙafewa.

3. Maganin dawowa
Ana ƙara lu'ulu'u na sodium sulfate decahydrate da tsarin gishirin lithium ke samarwa a cikin ruwan da aka tanada da kuma ruwan wanke-wanke na lithium da aka nutsar don samar da ruwan sodium sulfate mai cikakken haske, wanda aka adana a cikin wani tanki na ruwa daban sannan a kai shi kai tsaye zuwa tsarin fitar da iska da tattarawa na MVR.

4. Tururin MVR da kuma lu'ulu'u na maganin sodium sulfate
Ana sanya ruwan da ke ɗauke da sodium sulfate a cikin ruwan zafi ta hanyar na'urar dumama iska sannan a shiga ɗakin fitar da iskar gas ta tsarin MVR evaporation crystallization. Tsarin evaporation na MVR yana da na'urar musayar zafi a tsaye bayan famfon da aka tilasta amfani da shi. A ƙarƙashin aikin famfon da aka tilasta amfani da shi, ruwan kayan yana gudana a cikin irin wannan zagayawa a cikin ɗakin fitar da iskar gas - mai musayar zafi - famfon zagayawa da aka tilasta amfani da shi - mai musayar zafi - ɗakin fitar da iskar gas, ana dumama ruwan kayan a cikin mai musayar zafi, kuma ana gano rabuwar gas-ruwa mai ƙarfi a cikin ɗakin fitar da iskar gas. Ana aika da sinadarin gishiri mai ƙarfi zuwa wurin fitar da gishiri ta hanyar famfon fitarwa don tattarawa da rabawa, sannan a fitar da shi zuwa wurin nutsewar gishiri don tattarawa da rabawa, sannan a ƙarshe a fitar da shi zuwa centrifuge don raba centrifugal. Ana tattara filtrate na centrifugal da supernatant na raba gishiri a cikin tankin tacewa kuma a mayar da shi zuwa mai fitar da iskar MVR don fitar da iskar gas da lu'ulu'u. Sodium sulfate da aka raba daga centrifuge yana shiga tsarin bushewa.

5. Busarwa – Marufi
Sodium sulfate da aka samu daga crystallization yana ɗauke da ƙaramin adadin ruwa, kuma ya danganta da yanayin sake amfani da shi, ana tantance ko za a yi amfani da kayan busarwa don rage ruwa. Ana iya busar da kayan busarwa ta hanyar busarwa ta hanyar ruwa (samar da zafin busarwa ~ 150℃), buɗe gadon da aka girgiza da kuma na'urar tattara ƙura, sannan a kai shi wurin busarwa ta hanyar amfani da abin ciyar da sukurori don samun samfuran sodium sulfate marasa ruwa (ƙarin ruwa