云母是建筑用砂中的有害矿物成分,历来人们对建筑用砂中的云母含量都作了限制。经试验研究表明,含较多云母的砂可用与否,不能以简单的量来衡量,而应从是否影响制品性能来决定取舍,只有这样,才能使自然资源得以充分合理地利用。为处理江西星庐瓷土高岭土选矿中产生的固体废料——尾砂,笔者进行了利用高岭土尾砂生产蒸压灰砂砖的试验及研究。试验表明,含云母量达15%的尾砂不失为一种较好的硅质 Mica is a harmful mineral component in construction sand. Historically, mica content in construction sand has been limited. Tests have shown that sands containing cloudy mothers are available or not, and cannot be measured in simple quantities, but should be determined by whether or not they affect the performance of products. Only in this way can natural resources be fully and reasonably used. In order to deal with the tailings of solid waste produced in the processing of kaolin in Kaolinite clay in Jiangxi Province, the author conducted experiments and research on the use of kaolin tailings to produce autoclaved lime sand bricks. Tests show that tailings containing 15% of mica are a good type of siliceous