CAJ | 학술논문

以赣南离子型稀土尾砂提取高岭土后的二次尾砂为骨料，以适量低温砂、中温砂、黑滑石、石灰石和粘土等为高温粘结剂制备陶瓷透水砖，研究了二次尾砂含量和制备工艺对陶瓷透水砖的抗折强度和透水性能的影响。结果表明，陶瓷透水砖的抗折强度随着尾砂含量的增加而降低，透水系数则先增后降，当二次尾砂用量为75wt.%时达到最大。当二次尾砂用量为75wt.%，在成型压力为12 MPa、煅烧温度为1240℃、保温30 min条件下，所得陶瓷透水砖的抗折强度为5.5 MPa、透水系数为3.0×10-2 cm/s。
이공남리자형희토미사제취고령토후적이차미사위골료，이괄량저온사、중온사、흑활석、석회석화점토등위고온점결제제비도자투수전，연구료이차미사함량화제비공예대도자투수전적항절강도화투수성능적영향。결과표명，도자투수전적항절강도수착미사함량적증가이강저，투수계수칙선증후강，당이차미사용량위75wt.%시체도최대。당이차미사용량위75wt.%，재성형압력위12 MPa、단소온도위1240℃、보온30 min조건하，소득도자투수전적항절강도위5.5 MPa、투수계수위3.0×10-2 cm/s。
Water-permeable bricks were prepared by mainly using as an aggregate the recycled South Jiangxi rare earth tailings from which kaolin was separated, and appropriate amounts of low temperature sand, mid-temperature sand, black talc, limestone and clay as sintering aids. The effects of the content of the tailings and the preparation processes on the bending strength and permeation coefifcient of water-permeable bricks were studied. The results show that the bending strength decreased with the increase of the tailings content. However, the permeation coefifcient ifrstly increased, then decreased, and it reached the maximum value when the tailings content was 75wt.%. Under the conditions of the tailings content of 75wt.%, the molding pressure of 12 MPa, the sintering temperature of 1240 °C and the holding time of 30min, the obtained water-permeable bricks have the bending strength of 5.5 MPa and the permeation coefifcient of 3.0×10-2cm/s.