【作者】 白志民； 常有军； 陈锦； 文智慧； 庞宁； 范莹莹；

【Author】 BAI Zhi-min, CHANG You-jun, CHEN Jin, WEN Zhi-hui, PANG Ning, FAN Ying-ying School of Material Science and Technology, China University of Geosciences, Beijing 100083, China

【机构】 中国地质大学材料科学与工程学院；

【摘要】 通过研究大洋锰结核经氨浸工艺提取Co,Ni,Cu等有价金属后的粉末状固体残渣(氨浸渣)对石英-长石-高岭土3组分陶瓷体系烧结行为及制品性能的影响发现:3组分体系中添加不超过10%的氨浸渣,在1140C烧结90min,烧结体的抗折强度大于65.9MPa,吸水率小于0.128%,达到JC/T665-1997规定的要求。氨浸渣的助熔效果明显,添加5%～10%即可降低3组分陶瓷烧结温度40 C～80 C,添加量过多(超过10%)会增加熔体相含量,易引起坯体过烧,不利于坯体致密化和烧成工艺控制。添加氨浸渣,烧结体呈灰白色-黄褐色,且烧结体颜色随氨浸渣含量增加而变深。研究认为,氨浸渣可以作为石英-长石-高岭土3组分陶瓷的助熔剂和色料。更多还原

【Abstract】 The effect of ammonia leaching residue which is the residues of manganese nodules af- ter the extraction of Co,Ni,Cu by ammonia leaching process was studied on the sintering behavior and properties of quartz-feldspar-kaolin ternary system ceramics. The result shows that the ammonia leaching residue has an obvious flux effect. Adding 5%～10% ammonia leaching residues into the ternary system,sinter temperature of the system can be reduced 40 C～80 C. If adding more than 10% of ammonia leaching residue,the content of melting will increase obviously in the sintering body and result in over-sinter of the body,which is unfavorable for forming compact structure and controlling sintering condition. The result indicates after adding less than 10% ammonia leaching residues into the ternary system and sintering at 1 140 C in 90 min, flexural strength of the sintering body is more than 65.9 MPa and water absorbance less than 0.128%, these are in accordance with the demands of JC/T665-1997. Adding ammonia leaching residue,the color of ceramics bodies will change from grayish-white to yellowish-brown,and the color of body beomes heavier with the increase of ammonia leaching residue. Therefore,the ammonia leaching residue can be used as the fluxing agent and pigment in quartz-feldspar-kaolin ternary system ceramics.更多还原