Fluorine　(F)　additives　could　enhance　lithium　(Li)　extraction　from　alpha-spodumene　without　phase　transformation　(typically　at　similar　to　1100　degrees　C).　Fluorine　additives　participated　in　the　destruction　of　the　crystal　structure　of　alpha-spodumene　by　forming　HF　with　sulfuric　acid.　The　sulfuric　acid　was　employed　to　catalyze　the　destruction　of　the　alpha-spodumene　crystal　structure　and　convert　insoluble　fluorides　to　sulfates.　Residual　fluorine　mainly　existed　as　HF/F-　and　a　samll　amount　of　AlFx　after　acid　pre-leaching.　Based　on　different　boiling　points　of　HF-H2O　and　H2SO4-　H2O　systems,　a　stepwise　heat　treatment　was　proposed　herein　to　recycle　F　and　avoid　lithium　loss　caused　by　coordination　with　F.　A　systematical　investigation　of　effects　of　different　factors　such　as　heating　temperature　(200-350　degrees　C),　heating　time　(3-12　h),　initial　ratio　of　ore/H2SO4　(1:1,　1:2　g/mL)　and　different　heating　style　(directly　or　stepwise)　on　F　removal　was　conducted.　The　results　indicated　that　only　2.03%　of　F　remained　in　the　leaching　solution　after　the　stepwise　heat　treatment　for　an　ore/HF/H2SO4　ratio　of　1:3:2　g/mL/mL　at　120　degrees　C　for　3　h　and　250　degrees　C　for　3　h.　About　93.73%　of　Li　and　73.14%　of　Al　were　extracted　during　this　stepwise　heat　treatment.　More　importantly,　premiliary　separation　of　Li　and　Al　was　realized　due　to　the　formation　of　acid　insoluble　Al-2(SO4)(3),　which　was　conducive　to　the　subsequent　separation　and　purification　of　lithium　production.