(中南工業(yè)大學(xué)礦物工程系，長(zhǎng)沙 410083)
摘 要: 提出了一種新的繪制φ—pH圖的方法，即先求出所有的單變線方程，再選取某一種組分Mi為主組分，把含有該組分的所有單變線方程兩兩求解，求出交點(diǎn)(φi , pHi)，然后用化學(xué)勢(shì)約束原理法，將主組分同其它組分在該點(diǎn)的化學(xué)勢(shì)作比較，若前者的化學(xué)勢(shì)小于后者，則該點(diǎn)為所求的三相點(diǎn)。把生成該三相點(diǎn)的所有組分用數(shù)組標(biāo)記，若任意兩個(gè)三相點(diǎn)有兩種組分相同，便可連成線。
關(guān)鍵字: φ—pH圖；三相點(diǎn)；單變線
（Department of Mineral Processing Engineering,
Central South University of Technology, Changsha 410083, P. R. China）
Abstract:A new method of drawing φ—pH diagram has been proposed. Firstly, all of univariant line equations are attained; secondly, a crossing-point (φi, pHi) is got by solving univariant line equations including a main component(Mi) one another; thirdly, φi is compared with the chemical potentials φ of other components in this crossing-point by chemical potentials minimization. If φi<φ, then the crossing-point is the point of three-phase, components in the point of three-phase are labeled in an array; if two components of two points of three-phase are same, then the two points of three-phase are lined safely.
Key words: φ—pH diagram; point of three-phase; univariant line
