CAJ | 학술논문

以石煤酸浸渣为原料，矿渣经煅烧后采用碱浸制备白炭黑。探讨了碱矿质量比、固液比、反应温度、反应时间等因素对二氧化硅浸出率的影响及沉硅pH值和淋洗液pH值对白炭黑产量和质量的影响。结果表明：在碱矿质量比为1.4、固液比为1∶3、反应温度120℃和反应时间6 h的条件下，二氧化硅的浸出率为96.2%。在室温下沉硅，沉硅时间1 h，沉硅pH值为8.5、淋洗液pH值为3.0的条件下，二氧化硅回收率为91.9%。白炭黑产品中二氧化硅含量为96.9%，其比表面积为305.2 m2/g，经红外、X射线衍射分析白炭黑产品为非晶态结构的水合SiO2。
이석매산침사위원료，광사경단소후채용감침제비백탄흑。탐토료감광질량비、고액비、반응온도、반응시간등인소대이양화규침출솔적영향급침규pH치화림세액pH치대백탄흑산량화질량적영향。결과표명：재감광질량비위1.4、고액비위1∶3、반응온도120℃화반응시간6 h적조건하，이양화규적침출솔위96.2%。재실온하침규，침규시간1 h，침규pH치위8.5、림세액pH치위3.0적조건하，이양화규회수솔위91.9%。백탄흑산품중이양화규함량위96.9%，기비표면적위305.2 m2/g，경홍외、X사선연사분석백탄흑산품위비정태결구적수합SiO2。
White carbon black was prepared from acidic leaching residues of stone coal which was calcined by means of alkali leaching. The effects of the mass ratio of alkali versus mass, solid-liquid ratio, reaction temperature, reaction time on silica leaching rate were investigated. And silicon precipitation pH value and elution pH value were discussed in terms of white carbon black production and quality. Research results indicated that under the conditions of mass ratio of alkali versus ore was 1.4, solid-liquid ratio was 1∶3, reaction temperature was 120℃, reaction time was 6 h, the leaching rate of silica in slag was 96.2%. At the room temperature, when the reaction time was 1 h, elution solution pH value was 8.5, the recovery rate of SiO2 was 91.9%. The content of SiO2 in white carbon black product was 96.9%, the speciifc area is 305.2 m2/g, white carbon black product was proven to be amorphous structure of the hydration SiO2 by FTIR and XRD analysis.