CAJ | 학술논문

采用激光粒度仪、XRD、XRF、ICP-AES、SEM-EDS、比重法、筛分法等对硫酸法钛白生产过程中酸解尾渣进行系统的工艺矿物学特性分析，旨在为回收钛资源提供理论指导。研究表明，酸解尾渣表面潮湿，液相约占45%，其中易水解的可溶钛为4.06%（以TiO2质量分数计）；固相中不溶TiO2干基含量为17.14%，固相颗粒粒径主要分布于1～100μm，密度为3.21 g·cm?3，颗粒大小、形状不一，有块状、锥状及团聚絮状。通过筛分实验得知钛矿与其他杂质颗粒的粒径、密度有明显差异，少量120μm以上颗粒含有石膏，密度约3.41 g·cm?3；18～75μm主要为钛铁矿，密度大于3.54 g·cm?3，钛品位可达26%；18μm以下颗粒主要为硅泥，密度约2.90 g·cm?3，易团聚，与水形成黏稠物，难分离。
채용격광립도의、XRD、XRF、ICP-AES、SEM-EDS、비중법、사분법등대류산법태백생산과정중산해미사진행계통적공예광물학특성분석，지재위회수태자원제공이론지도。연구표명，산해미사표면조습，액상약점45%，기중역수해적가용태위4.06%（이TiO2질량분수계）；고상중불용TiO2간기함량위17.14%，고상과립립경주요분포우1～100μm，밀도위3.21 g·cm?3，과립대소、형상불일，유괴상、추상급단취서상。통과사분실험득지태광여기타잡질과립적립경、밀도유명현차이，소량120μm이상과립함유석고，밀도약3.41 g·cm?3；18～75μm주요위태철광，밀도대우3.54 g·cm?3，태품위가체26%；18μm이하과립주요위규니，밀도약2.90 g·cm?3，역단취，여수형성점주물，난분리。
Comprehensive process mineralogy analysis of waste residue from incomplete reaction of titanium concentrate and sulfuric acid in sulfate process of titanium dioxide industry was made with Mastersizer 2000, XRD, XRF, ICP-AES, SEM-EDS, specific gravity method and screening, to provide guidance to recycling ilmenite. The residue had wet surface with about 45%(mass) soluble substance, including 4.06%(mass)Ti ion which could be hydrolyzed easily. The insoluble particles with various appearances contained 17.14%(mass) TiO2, 10.78%(mass) Fe2O3, and 46.94%(mass) SiO2. Its particle size distribution was between 1μm and 100μm. Its density was 3.21 g·cm?3. From screening, there were different particle sizes and densities between ilmenite and other impurities. Particles above 120μm with average density about 3.4 g·cm?3were mainly anhydrite. Particles between 18μm and 75μm with average density greater than 3.5 g·cm?3 were mainly ilmenite. Particles below 18μm with average density about 2.9 g·cm?3 mainly contained silicon sludge, and became viscous and difficult to separate in water.