Calculation Of Thermal Equilibrium For The Purification Facility Of Industrial Grade Lithium

This article set industrial grade lithium from Non-ferrous metal research instituteof Xinjiang as an object of study, according to the given working conditions, thermalequilibrium analysis was did on the distillation experiment device of lithium, and thena probable model for the calculation was established. The parameters got fromcalculation were reviewed and corrected. The main content includes：(1) To make a thermal equilibrium analysis on the distillation device of lithiumindustrial grade, set up thermal equilibrium model, find out requisite PHYSICALDATE, determine heat computing models of different parts, established thermalequilibrium equation. The parameters of the device were determined: The heightof condensing period was1.3meters, cooling area was0.555m2, time forgasification was105minutes.(2) To perform a distillation experiment on industrial grade lithium, measuretemperature at different heights of the cooling area (through thermal couplebuilt-in), which was compared with computing results in part (1), in order to testand verify the deviation. This paper discussed the probable causes which resultedthe deviation from the following several aspects: warming rate of the furnace,differences between ideals and reality, equipment, heat source and heatdissipating.(3) To make an analysis on the purity of the product to obtain the contains of someimpurities like K, Na, Ca, Mg, Fe, Al with national standard methods to determinethe provisions of the analysis. The results showed that the purity of the product ofthe first experiment was99.12%and the second one was99.25%. To a certainextent, a preliminary separation was realized through the distilling experiment andpurity of the product got improved to some extent. On the basis of the physicaltruth, the thermal equilibrium equation was modified and calculated again. Andthus the results after modified showed that the gasification time was90minutes, along with the cooling area and height was0.512m2and1.2m.(4) Through the analysis of the experiment dates, we found that at the temperature of650℃, the lithium pounds could boil away within a reasonable period of time, andthen got condensed when through the cooling area.