CAJ | 학술논문

以炼油废催化剂为原料,将炼油废催化剂放入箱式电阻炉中焙烧,用硫酸,盐酸,硝酸为浸提液,分别浸提焙烧后的废催化剂。结果表明,在400℃,煅烧时间3h,以质量分数为10%的硫酸与焙烧后的废催化剂按体积比5：1浸出5h,Cd、Cr,Ni、Hg、Pb的浸出效果最好。将分离有害金属后的滤渣在130℃,硫酸浓度为45%,液固体积比为10：1条件下反应6 h,过滤烘干可得SiO2含量>90%的白炭黑。向含金属离子的滤液中加沉淀剂硫化钠,将滤液中的有害金属沉淀,沉淀过滤后,再向母液中加入10%的盐酸(母液：盐酸=10：3),在80℃下搅拌反应4h后过滤,然后向滤液中加8%的NaOH溶液调pH=4．3搅拌反应2．5h,蒸发过滤烘干可得Al2 O3≥34%、盐基度≥44%的固体聚合三氯化铝。
이련유폐최화제위원료,장련유폐최화제방입상식전조로중배소,용류산,염산,초산위침제액,분별침제배소후적폐최화제。결과표명,재400℃,단소시간3h,이질량분수위10%적류산여배소후적폐최화제안체적비5：1침출5h,Cd、Cr,Ni、Hg、Pb적침출효과최호。장분리유해금속후적려사재130℃,류산농도위45%,액고체적비위10：1조건하반응6 h,과려홍간가득SiO2함량>90%적백탄흑。향함금속리자적려액중가침정제류화납,장려액중적유해금속침정,침정과려후,재향모액중가입10%적염산(모액：염산=10：3),재80℃하교반반응4h후과려,연후향려액중가8%적NaOH용액조pH=4．3교반반응2．5h,증발과려홍간가득Al2 O3≥34%、염기도≥44%적고체취합삼록화려。
The waste oil-refining catalysts selected as raw materials,were roasted in a box resistance furnace. Then,the catalysts af-ter roasting were treated with sulfuric acid,hydrochloric acid,nitric acid,respectively. The best leaching effect of Cd,Cr,Ni,Hg,Pb were obtained under the calcination temperature 400 ℃,calcination time 3h,10%sulfuric acid( mass fraction) as leaching medium and a volume ratio of liquid to solid 5:1. After the separation of harmful metals from spent wastes,the residues with a volume ratio of liquid to solid 10:1 were treated for 6h at the temperature of 130℃ in 45%sulfuric acid solution. The white carbon black with o-ver 90%content of silica was obtained after filtration and drying. Sodium sulfide was added to the filtrate containing metal ions,the resulted precipitate was filtered and the filtrate was again added 10%hydrochloric acid(filtrate:hydrochloric acid=10:3). At 80 ° C,the mixture was stirred for 4h. then filtered,and the pH value of the solution was adjusted to 4. 3 by addition of 8%NaOH solu-tion. After stirring was continued for 2. 5h,the solution was filtrated. The solid polyaluminum chloride with the content of over 34%Al2 O3 and over 44%basicity was prepared.