氟硅酸氨解反应中对二氧化硅品质影响的因素  

Factors Affecting Quality of Silica in Ammonolysis Reaction of Fluorosilicic Acid

作　　者：丁蕾 陈洪声 代应会 陈梅梅 田光雨 陈思帆 DING Lei;CHEN Hongsheng;DAI Yinghui;CHEN Meimei;TIAN Guangyu;CHEN Sifan(Guizhou Chemical Research Institute,Guizhou Guiyang 550002,China)

机构地区：[1]贵州省化工研究院,贵州贵阳550002

出　　处：《广州化工》2025年第3期34-36,共3页GuangZhou Chemical Industry

基　　金：贵州科学院青年基金项目(黔科院J字[2021]51号)。

摘　　要：随着湿法磷酸和磷肥行业的发展不断壮大,其副产的氟硅酸数量惊人,每生产一吨磷酸约副产0.05 t氟硅酸,因其可以作为各种含氟产品的原料越来越受到人们关注,但因其浓度较低沉淀较多,又制约的它的应用范围,如果不加以正确的处理和处置,将对环境和人体健康造成严重威胁。本文通过实验探究氟硅酸和氨水反应中对氟硅分离效果影响的因素,探索氟硅酸氨解工业化生产白炭黑的可能性,不但可以减少污染,还有利于行业的发展,为磷矿伴生资源的高质量发展提供必要的技术支撑。结果表明:当氟硅酸浓度低于15%,与过量系数为1.2的浓度为5%氨水,控制反应温度60℃以下时,可以得到满足《橡胶配合剂沉淀水合二氧化硅HG/T 3061-2020》的标准要求的二氧化硅。With the continuous development of the wet-process phosphoric acid and phosphate-fertilizer industries,a large amount of fluorosilicic acid is astonishingly produced as a by-product,approximately 0.05 tons for every ton of phosphoric acid produced.Due to its potential as a raw material for various fluorine-containing products,it has attracted increasing attention.However,its low concentration and high precipitation limit its application range.If not properly treated and disposed of,it will pose a serious threat to the environment and human health.The factors affecting the fluorosilicon separation efficiency in the reaction between fluorosilicic acid and ammonia water through experiments,and the possibility of industrial production of white carbon black by fluorosilicic acid ammonolysis were explored.This not only reduced pollution but also benefited the industry s development,providing necessary technical support for the high-quality development of phosphate-associated resources.The results indicated that when the concentration of fluorosilicic acid was below 15%,with an excess coefficient of 1.2 and 5%ammonia water,and the reaction temperature was controlled below 60℃,silica that met the standard requirements of“Rubber compounding agent precipitation hydrated silica HG/T 3061-2020”can be obtained.

关 键 词：磷矿伴生资源 氟硅酸 氟硅酸铵 氟硅分离 白炭黑 

分 类 号：TQ127.2[化学工程—无机化工]