Ca(OH)_2-Na_2CO_3反应体系工艺参数对白泥碳酸粒径控制研究  

Study on the control of processing parameters on particlediameter of the Calcium Carbonate in the Ca(OH)_2 and Na_2CO_3 reaction system

作　　者：王建[1] 邱金锋[1] 

机构地区：[1]陕西科技大学轻工与能源学院陕西省造纸技术及特种纸品开发重点实验室,陕西西安710021

出　　处：《陕西科技大学学报（自然科学版）》2014年第6期14-17,32,共5页Journal of Shaanxi University of Science & Technology

基　　金：国家科技部十二五科技支撑计划项目(2012BAD23B02);制浆造纸工程国家重点实验室基金项目(201103)

摘　　要：研究了Ca(OH)2-Na2CO3反应体系的碳酸钙粒径控制.研究结果显示:苛化工艺对苛化碳酸钙粒径具有不同程度的影响,对粒径影响程度按照高低顺序依次为消化热水温度、苛化温度、消化时间、搅拌速度和加料时间,其中消化热水温度和苛化温度是影响碳酸钙粒径的主要因素.随着消化水温度和苛化温度的增加,合成CaCO3颗粒粒度逐渐变小,但消化水温度超过60℃时,碳酸钙粒径基本保持不变.合成碳酸钙的陈化时间对其粒度有一定的影响,测试碳酸钙粒径时,陈化(静置)时间超过24h,测试结果较为准确.This paper investigates the control of particle diameter of the Calcium Carbonate based on Ca（OH）2 and Na2CO3 reaction system ,the result indicate ：causticizing process have different level of influence on particle diameter of the Calcium Carbonate ,the relatively order is slaking temperature ,causticizing temperature ,slaking time ,stirring speed ,adding time of Na2 CO3 ,the major factors w hich influence particle diameter of the Calcium Carbonate are slaking temperature and causticizing temperature ,with the increasing of their temperature , the particle diameter of the Calcium Carbonate will be decreased gradually ,but when the slaking temperature exceed 60 ℃ ,the particle diameter remained about the same ,the ageing time of the Calcium Carbonate have influence on the particle diameter to some extend ,while testing the particle diameter of the Calcium Carbonate ,the result has high accuracy if the ageing time over 24 hours .

关 键 词：苛化 碳酸钙 静置 粒径 

分 类 号：O69[理学—化学]