硫酸法钛白副产钛石膏中碳酸钙分析方法的研究及应用  

Determination of CaCO_(3) in Titanium Gypsum from Sulfate TiO_(2) Process

作　　者：仝宇 王瑞 徐琳 徐梦 葛利平 Tong Yu;Wang Rui;Xu Lin;Xu Meng;Ge Liping(Jinan Yuxing Chemical Co.,Ltd.,Jinan 250119,China)

机构地区：[1]济南裕兴化工有限责任公司,济南250119

出　　处：《涂层与防护》2022年第10期7-11,共5页Coating and Protection

摘　　要：钛石膏产生于硫酸法钛白行业中石灰石粉及石灰中和废水(主要含有硫酸和硫酸亚铁)的水处理工序,其量大且成分复杂,包含Si、Al、Mg、Mn、Na、K、Zn、P、Zr、Sr等杂元素,同时不可避免地造成原料碳酸钙的残留及浪费。而业内缺乏钛石膏中CaCO_(3)含量的分析方法及标准,导致无法准确监测原料碳酸钙的利用率。本文将高频红外碳硫分析仪用于钛石膏中CaCO_(3)含量分析,通过优化分析条件、加标法验证分析准确性,建立了钛石膏中CaCO_(3)含量分析方法。该方法可快速、高效、准确地测定硫酸法钛白副产钛石膏中CaCO_(3)的含量,可有效规避钛石膏中多杂元素的干扰,为硫酸法钛白水处理工艺的优化提供了基础条件。In sulfate TiO_(2) industry,limestone powder and industrial lime are used to neutralize wastewater containing sulphuric acid and ferrous sulfate,which forms a large amount of titanium gypsum containing impurity elements such as Si,Al,Mg,Mn,Na,K,Zn,P,Zr and Sr,resulting in residue and over consumption of raw material(CaCO_(3)).There has not yet a standard to determine CaCO_(3) in the titanium gypsum and the utilization rate of CaCO_(3).In this article,a new method based on high frequency infrared carbon analyzer can be used for determination of CaCO_(3) in titanium gypsum by optimization analysis and internal standard calibration.This method is fast,high efficient and accurate with good anti-interference capability.Meanwhile,it can provide a basis for the optimization of the water treatment process in sulfate TiO_(2) industry.

关 键 词：硫酸法钛白 钛石膏 CaCO_(3) 高频红外碳分析 

分 类 号：TQ630[化学工程—精细化工]