Considering the mass balance law for solute , and combining with the populance balance model and the mccabe ' s l law , a linear crystal growth rate model was presented for potassium nitrate aqueous system . the test variables of both the liquid and solid for kinetic parameter estimations were given on this model , and the experimental apparatus were also set up 基于粒數(shù)衡算模型,以kno _ 3 - h _ 2o為模型研究體系,根據(jù)結(jié)晶過(guò)程中溶質(zhì)質(zhì)量守恒和mccabe定律,首先建立了晶體線性生長(zhǎng)動(dòng)力學(xué)模型,并確定出動(dòng)力學(xué)參數(shù)估計(jì)所需要表征的固液兩相物理參數(shù),進(jìn)而建立了實(shí)驗(yàn)表征方法和測(cè)定裝置。