Njira yobwezeretsa sodium sulfate popanga batri ya lithiamu

Mu njira yobwezeretsanso mabatire a lithiamu a zinyalala ndi lithiamu iron phosphate, sulfuric acid ndi caustic soda zimasanduka mchere wa sodium sulfate chifukwa cha zofunikira zaukadaulo. Yankho losaphika lomwe lili ndi sodium sulfate limaphatikizapo yankho lobwezera la dongosolo la mchere wa lithiamu, yankho pambuyo pa kapangidwe ka nickel-cobalt ya ternary, ternary pre-treatment discharge brine, yankho pambuyo pa kunyowa kwa lithiamu iron phosphate, yankho pambuyo pa kunyowa kwa lithiamu iron phosphate, yankho pambuyo pa kunyowa kwa lithiamu lithium ndi mchere wa lithiamu lithium, yankho lotsalira la nickel-cobalt-manganese salt extraction, yankho pambuyo pa kapangidwe ka nickel-cobalt-manganese, ndi zina zotero. Mayankho awa amayeretsedwa mwachindunji kapena mu dongosolo la MVR evaporation, ndipo amapangidwa ndi makristalo ambiri ndi kuumitsa kuti apange zinthu za anhydrous sodium sulfate. Njira yayikulu yopangira ndi iyi:

1. Sakanizani madzi
Madzi opangidwa ndi nickel-cobalt a Ternary, madzi otuluka omwe adakonzedwa kale, phosphate ya lithiamu iron pambuyo pokhazikika kwa lithiamu, phosphate ya lithiamu iron pambuyo pokhazikika kwa lithiamu, mchere wa lithiamu pambuyo pokhazikika kwa lithiamu nickel cobalt manganese salt extraction nickel residue, madzi opangidwa ndi nickel cobalt manganese ndi zina zosakaniza.

2. Kuchotsa zinyalala ndi kuyeretsa
Pambuyo pokonza yankho la sodium sulfate pogwiritsa ntchito madzi a alkali + sodium sulfide kuti muchotse zitsulo zolemera (kanikizani sefa pang'ono ya nickel ndi cobalt slag, bweretsani ku chakudya kuti mugwiritsenso ntchito), sinthani PH kukhala 5 ~ 7; Pambuyo poyesa, thanki yamadzimadzi yosaphika imalowetsedwa, ndipo thanki yamadzimadzi yosaphika imagwira ntchito yosungira ndikuwongolera madzi osaphika kuti ikwaniritse ntchito yokhazikika komanso yokhazikika ya evaporator yamadzi otayira a MVR. Thanki yamadzimadzi yosaphika ili ndi pampu yamadzimadzi yosaphika. Pampu yamadzimadzi yosaphika imanyamula madzi a sodium sulfate mofanana kupita ku njira yochizira evaporation. Valavu yowongolera pambuyo pa pampu yamadzimadzi yosaphika imasinthidwa kuti isunge bwino pakati pa kuchuluka kwa madzi osaphika ndi kuchuluka kwa evaporation.

3. Yankho lobwezera
Makristalo a sodium sulfate decahydrate opangidwa ndi dongosolo la mchere wa lithiamu amawonjezeredwa m'madzi oundana ndi madzi osambira a lithiamu omwe ali pansi pa madzi kuti apange yankho la sodium sulfate lodzaza, lomwe limasungidwa mu thanki lina lamadzimadzi kenako limatumizidwa mwachindunji ku dongosolo la MVR evaporation and concentration.

4. Kutuluka kwa mpweya wa MVR ndi kupangika kwa sodium sulfate
Madzi okhala ndi sodium sulfate amatenthedwa ndi condensate preheater kenako amalowa m'chipinda chotenthetsera cha MVR evaporation crystallization system. MVR evaporation system ili ndi chosinthira kutentha choyima pambuyo pa pompo yoyendetsedwa ndi mphamvu. Pansi pa ntchito ya pompo yoyendetsedwa ndi mphamvu, madzi azinthu amayendayenda motere m'chipinda chotenthetsera - chosinthira kutentha - pompo yoyendetsedwa ndi mphamvu - chosinthira kutentha - chipinda chotenthetsera, madzi azinthu amatenthedwa mu chosinthira kutentha, ndipo kulekanitsidwa kwa gasi-liquid-solid kumachitika m'chipinda chotenthetsera. Mchere wokhuthala umatumizidwa ku malo otulutsira mchere ndi pompo yotulutsira madzi kuti ukhale wokhuthala ndi wolekanitsa, kenako umatulutsidwa mu sinki yamchere kuti ukhale wosonkhanitsidwa ndi wokhuthala ndi wolekanitsa, ndipo pamapeto pake umatulutsidwa mu centrifuge kuti ukhale wotalikirana. Centrifugal filtrate ndi salt separator supernatant zimasonkhanitsidwa mu thanki ya filtrate ndikutumizidwa ku evaporator ya MVR kuti ikhale yotenthetsera ndi yokonza. Sodium sulfate yolekanitsidwa ndi centrifuge imalowa mu dongosolo louma.

5. Kuuma - Kupaka
Sodium sulfate yomwe imapezeka kuchokera ku crystallization imakhala ndi madzi ochepa, ndipo kutengera momwe zinthu zigwiritsidwirenso ntchito, zimatsimikiziridwa ngati zipangizo zowumitsira zingagwiritsidwe ntchito kuchepetsa madzi. Zipangizo zowumitsira zimatha kusinthidwa kukhala madzi (kutentha kowumitsira ~ 150℃), kutsegula bedi logwedezeka ndi chipangizo chothandizira kusonkhanitsa fumbi, kenako nkutumizidwa ku bedi logwedezeka ndi chodyetsa chokulungira kuti mupeze zinthu za sodium sulfate zomwe sizili ndi madzi (madzi