摘要
There is much graphite tailing in Nanshu area of Shandong province,which is the main locality of graphite in China.The chemical compositions and mineral components of the graphite tailing are similar to that of the common clay and gangue.The tailing can be made into sintering bricks by mixing 70%～30% coarse tailing with 30%～70% fine tailing ,and compressed into unburnt brick,then sintered at 1040～1060℃ for 20 minutes.The relationship between percent sorption, shrinkage ratio and compressive strength is examined by using samples with different mixing ratios and different sintering temperatures.A clear positive linear correlation is recognized between the shrinkage ratio and compressive strength. A clear negative linear correlation is found out between the shrinkage ratio and percent sorption.The results show that the shrinkage ratio is an important parameter to evaluate physical properties of the products.
There is much graphite tailing in Nanshu area of Shandong province,which is the main locality of graphite in China.The chemical compositions and mineral components of the graphite tailing are similar to that of the common clay and gangue.The tailing can be made into sintering bricks by mixing 70%～30% coarse tailing with 30%～70% fine tailing ,and compressed into unburnt brick,then sintered at 1040～1060℃ for 20 minutes.The relationship between percent sorption, shrinkage ratio and compressive strength is examined by using samples with different mixing ratios and different sintering temperatures.A clear positive linear correlation is recognized between the shrinkage ratio and compressive strength. A clear negative linear correlation is found out between the shrinkage ratio and percent sorption.The results show that the shrinkage ratio is an important parameter to evaluate physical properties of the products.
出处
《矿物岩石地球化学通报》
CAS
CSCD
1999年第4期221-225,共5页
Bulletin of Mineralogy, Petrology and Geochemistry
关键词
石墨尾矿
烧结砖
制备工艺
物理性质
graphite tailing
sintering brick
processing techniques
physical properties
