低品位硼铁矿中提取硼酸  

The Extraction Technology of Boric Acid from Low-grade Ludwigite

作　　者：袁本福 牛祖国 张勇帅 肖博 Yuan Benfu;Niu Zuguo;Zhang Yongshuai;Xiao Bo(Shandong Yuhuang Chemical(Group)CO.,Ltd.,Heze 274512,China;Dongming Bureau of Natural Resources and Planning,Heze 274500,China)

机构地区：[1]山东玉皇化工有限公司技术与研发中心,山东菏泽274512 [2]东明县自然资源和规划局,山东菏泽274500

出　　处：《山东化工》2023年第6期41-43,46,共4页Shandong Chemical Industry

摘　　要：采用低温结晶法提取硼铁矿酸浸液中的硼酸,一次回收率为74.66%,并对其进行了XRD和SEM表征。分析其纯度为99.70%,达到了国家化工行业工业硼酸标准GB/T 538—2006中一等品的要求(硼酸质量含量在99.4%~100.8%之间)。最后分别测定了提取的硼酸中的杂质镁、铁和硫酸根的含量:采用火焰原子吸收光谱法测定了硼酸中杂质镁的含量,结果为硼酸中含镁1.34×10^(-4);采用分光光度法测定了硼酸中杂质铁的含量,结果为硼酸中含铁8.175×10^(-5);采用分光光度法测定了硼酸中杂质硫酸根的含量,结果为硼酸中含硫酸根1.116×10^(-5)。The boric acid was extracted from acid-leaching solution by low-temperature crystallization,the recovery of it reached to 74.66%.The purity of boric acid is 99.70%,which fits the first grade industrial products(boric acid content of between 99.4%~100.8%)according to the industrial standard of boric acid(GB/T 538-2006).In addition,the impurities content of boric acid were analyzed in this paper.The impurity magnesium content of boric acid was assayed by flame atomic absorption spectrometry(FAAS)and the impurity iron and impurity sulfate ion of boric acid were assayed by spectrophotometry.And the results of those wereω(Mg)=1.34×10^(-4),ω(Fe)=8.175×10^(-5),ω(SO 42-)=1.116×10^(-5).

关 键 词：硼铁矿 低温结晶 硼酸 杂质分析 

分 类 号：TQ111[化学工程—无机化工]