CAJ | 학술논문

研究针对四川石棉县石棉尾矿高铁性质,采用二步酸浸、磁化除铁工艺,在较温和的反应条件下制备得满足HG/T3061-1999中A类标准要求的工业级白炭黑:SiO_2＞95.8%,比表面积为233m~2/g,平均孔径1～10μm,DPB吸油值为2.42mL/g.工艺流程设计简洁,操作便宜,为以高铁石棉尾矿为原料制备白炭黑提供切实可行的工艺.
연구침대사천석면현석면미광고철성질,채용이보산침、자화제철공예,재교온화적반응조건하제비득만족HG/T3061-1999중A류표준요구적공업급백탄흑:SiO_2＞95.8%,비표면적위233m~2/g,평균공경1～10μm,DPB흡유치위2.42mL/g.공예류정설계간길,조작편의,위이고철석면미광위원료제비백탄흑제공절실가행적공예.
According to the especial character of the asbestos tailings with high iron content from Shimian county Sichuansichuan province, the two-step acid-leaching and magnetization technology was adopted. Under a mild reaction condition the technical grade silica was prepared from asbestos tailings, which could meet the quality index of criter A in HG/T 3061-1999, the total content of amorphous silica was above 95.8%, and the specific surface area was 233m~2/g, the average aperture was 1～10μm, the DPB adsorption value was 2.42mL/g. The process flow was simplified and easy to operate, which was a feasible process for preparation of technical grade silica from the asbestos railings with high iron content.