氟硫矿化剂对高石英含量水泥生料煅烧的影响  

Effect of F-S Mineralizer on Calcining Raw Materials with High Quartz Content

作　　者：马合沙提·韩索尔坦 卢普光 艾红梅 MAHESHATI Hansuoertan;LU Puguang;AI Hongmei(Xinjiang Irtysh River Basin Development Engineering Construction Administration,Urumqi 830000,China;Beifang Investigation,Design&Research Co.Ltd,Tianjin 300202,China;Faculty of Infrastructure Engineering,Dalian University of Technology,Dalian 116024,China)

机构地区：[1]新疆额尔齐斯河流域开发工程建设管理局,乌鲁木齐830000 [2]中水北方勘测设计研究有限责任公司,天津300202 [3]大连理工大学建设工程学部,大连116024

出　　处：《硅酸盐通报》2021年第9期2884-2890,共7页Bulletin of the Chinese Ceramic Society

基　　金：大连市科技基金(2011J21DW002)。

摘　　要：使用全组分废弃混凝土替代部分原材料烧制水泥熟料能够提高建筑垃圾利用率,但这将不可避免地引入石英态的SiO_(2),对生料易烧性和熟料质量带来不利影响。本文以石英砂为硅质原料,配制高石英含量的生料,按不同比例掺入氟硫矿化剂(m(F)/m(SO_(3))=0.4),研究了氟硫矿化剂对高石英含量水泥生料易烧性、熟料煅烧过程、熟料矿物组成与结构、熟料水化后抗压强度以及水化产物形貌的影响。试验结果表明,氟硫矿化剂掺加到高石英含量水泥生料中能够显著改善生料的易烧性,减少系统液相出现和降低C_(3)S析晶温度,促进熟料矿物形成,熟料水化后的抗压强度也更高,水化产物更致密。氟硫矿化剂中CaF_(2)的质量掺量从0.5%增加至1.5%时,C_(3)S晶体长径比变小,熟料水化后的抗压强度有少许降低。The all-components of waste concrete used in cement production can improve the utilization rate of construction waste,however,the quartz will be brought in raw material inevitably,and the burnability of raw material and the quality of clinkers can be affected.Different proportions of F-S mineralizer(m(F)/m(SO_(3))=0.4)were mixed in raw material in the experiment,the effect of F-S mineralizer on clinker property and burnability of raw material whose silicon materials were quartz sand was studied.The results show that while the F-S mineralizer is added in the raw material,the burnability of raw material is improved,it also lowers the temperature of liquid phase appeared and crystallization of C_(3)S,hydration products of clinker is more compacted and compressive strength is higher than raw material.When the mass content of CaF_(2)of F-S mineralizer increases from 0.5%to 1.5%,the long slenderness ratio of C_(3)S crystal becomes smaller,and the compressive strength of hydrated clinker decreases slightly.

关 键 词：废弃混凝土 石英 生料 氟硫矿化剂 煅烧 水化 

分 类 号：TQ172[化学工程—水泥工业]