氟硫矿化剂对高石英含量水泥生料煅烧的影响

硅酸盐通报 ›› 2021, Vol. 40 ›› Issue (9): 2884-2890.

氟硫矿化剂对高石英含量水泥生料煅烧的影响

马合沙提·韩索尔坦¹, 卢普光², 艾红梅³

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

收稿日期:2021-02-20 修回日期:2021-06-07 出版日期:2021-09-15 发布日期:2021-10-08
通讯作者: 卢普光,高工。E-mail:394719209@163.com
作者简介:马合沙提·韩索尔坦(1977—),男,高工。主要从事工程材料方面的研究。E-mail:20989785@qq.com
基金资助:
大连市科技基金(2011J21DW002)

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

MAHESHATI Hansuoertan¹, LU Puguang², AI Hongmei³

1. Xinjiang Irtysh River Basin Development Engineering Construction Administration, Urumqi 830000, China;
2. Beifang Investigation, Design &Research Co. Ltd, Tianjin 300202, China;
3. Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian 116024, China

Received:2021-02-20 Revised:2021-06-07 Online:2021-09-15 Published:2021-10-08

摘要/Abstract

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SiO₂,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(SO₃)=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C₃S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CaF₂的质量掺量从0.5%增加至1.5%时,C₃S晶体长径比变小,熟料水化后的抗压强度有少许降低。

关键词: 废弃混凝土, 石英, 生料, 氟硫矿化剂, 煅烧, 水化

Abstract: 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(SO₃)=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 C₃S, hydration products of clinker is more compacted and compressive strength is higher than raw material. When the mass content of CaF₂ of F-S mineralizer increases from 0.5% to 1.5%, the long slenderness ratio of C₃S crystal becomes smaller, and the compressive strength of hydrated clinker decreases slightly.

Key words: waste concrete, quartz, raw material, F-S mineralizer, calcination, hydration

中图分类号:

TQ172

马合沙提·韩索尔坦, 卢普光, 艾红梅. 氟硫矿化剂对高石英含量水泥生料煅烧的影响[J]. 硅酸盐通报, 2021, 40(9): 2884-2890.

MAHESHATI Hansuoertan, LU Puguang, AI Hongmei. Effect of F-S Mineralizer on Calcining Raw Materials with High Quartz Content[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(9): 2884-2890.

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