摘要
以烧结矿中的铁酸钙粘结相为研究对象,考察了粘结相自身的抗折、抗压强度随粘结相组成的变化规律.实验考察了不同n(CaO)∶n(Fe2O3)(摩尔比)以及MgO,SiO2和Al2O3含量对铁酸钙粘结相的抗折、抗压强度的影响规律.结果表明,n(CaO):n(Fe2O3)=1∶2时,粘结相的抗折、抗压强度最高,添加MgO使粘结相抗折、抗压强度下降,适量的SiO2(w(SiO2)<3%)能提高粘结相的抗折、抗压强度,但随Al2O3含量的增加,粘结相的抗折、抗压强度下降.
The self-strength of calcium ferrite binding phase in sinter and relationship between the fracture/compression strength and binding phase＇ s composition were studied experimentally. Tested with the different mol ratios of CaO to Fe2O3 and the different contents of MgO, SiO2 and Al2O3, the fracture/compression strength of different binding phases was discussed. It is found that the highest fracture/compression strength is given when the ratio n （CaO） ： n （Fe2O3） = 1：2, but the strength decreases when increasing MgO content. The appreciate content of SiO2 （〈 3wt% ） will improve the strength of binding phase, while the strength of binding phase decreases with increasing Al2O3 content.
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2009年第2期225-228,共4页
Journal of Northeastern University(Natural Science)
基金
国家自然科学基金资助项目(50474014)
关键词
烧结矿
铁酸钙粘结相
抗折强度
抗压强度
sinter
ferrite calcium binding phase
fracture strength
compression strength
