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一、前言密度是铝酸钠溶液重要物理化学性质之一。为探讨铝酸钠溶液结构和满足生产、设计需要,人们做过许多测定和研究,也一直在追求一个简便而又准确的密度计算公式。但迄今,多以水在某温度下的密度为基准加合,再附以温度修正计算,仍显繁杂。本文试图在所研究的浓度范围内,建立一个更为简便和准确的密度计算公式。本文采用五因子二次回归正交设计的数理
I. INTRODUCTION Density is one of the important physical and chemical properties of sodium aluminate solution. In order to explore the structure of sodium aluminate solution and meet the needs of production and design, many measurements and studies have been done and a simple and accurate density calculation formula has been pursued. However, up to now, the addition of water based on the density of water at a certain temperature as a benchmark, followed by temperature correction, is still complicated. This paper attempts to establish a more convenient and accurate density calculation formula in the concentration range studied. In this paper, the quadratic regression of five factors quadratic design of the mathematical