碳酸钡矿化剂在铜尾矿基硅质原料熟料煅烧中的作用机制研究#br#

金属矿山 ›› 2025, Vol. 54 ›› Issue (10): 279-285.

碳酸钡矿化剂在铜尾矿基硅质原料熟料煅烧中的作用机制研究#br#

颜美帼^1,2　任鑫燕^1,2　徐　迅¹　吴　鑫^1,2　宋猛猛¹

1. 西南科技大学土木工程与建筑学院,四川绵阳 621000;2. 西南科技大学材料与化学学院,四川绵阳 621000

出版日期:2025-10-15 发布日期:2025-11-10
通讯作者: 徐　迅 (1977—),男,特聘教授,博士,硕士研究生导师。
作者简介:颜美帼(1999—),女,硕士研究生。
基金资助:
广西自然科学基金重点项目(编号:2025GXNSFDA069046)。

Study on the Mechanism of Barium Carbonate Mineralizer in the Calcination of Copper Tailings Based Siliceous Raw Material Clinker#br#

YAN Meiguo^1,2　REN Xinyan^1,2　XU Xun¹　WU Xin^1,2　SONG Mengmeng¹

1. School of Civil Engineering and Architecture,Southwest University of Science and Technology,Mianyang 621000,China;
2. School of Materials and Chemistry,Southwest University of Science and Technology,Mianyang 621000,China

Online:2025-10-15 Published:2025-11-10

摘要/Abstract

摘要： 针对铜尾矿资源化利用过程中普遍存在有害组分多、利用风险高等问题,以铜尾矿经SiO2 富集处理后
的分离石英为硅质原料,研究了碳酸钡矿化剂对水泥熟料烧成过程的作用机制。通过调控碳酸钡掺量(0~1. 0%),结
合易烧性测试、XRD 物相分析、矿相微观形貌及烧成动力学计算等多种手段,系统评估其对熟料矿物形成与微观结构
的影响。结果表明:碳酸钡引入可显著降低C3S 生成的表观活化能,由基准样的199. 04 kJ/ mol 降至0. 8%掺量下的
104. 06 kJ/ mol,有效提升生料易烧性与反应速率;Ba2+可部分置换熟料矿物中的Ca2+ ,属于类质同晶现象,有助于调控
硅氧网络结构并诱导C3S 晶体良好发育,改善矿物形貌与结构致密性;此外,碳酸钡的引入缓解了铜尾矿处理所得的
分离石英结晶度高、反应活性弱的缺陷,为铜尾矿的大规模高值化利用提供了可行路径。

关键词: 硅质原料　钡盐　矿化剂　矿化机理

Abstract: In view of the common problems of numerous harmful components and high utilization risks in the process of
copper tailings resource utilization,this paper takes the separated quartz after SiO2 enrichment treatment of copper tailings as
the siliceous raw material to study the mechanism of action of barium carbonate mineralizer on the calcination process of cement
clinker. By adjusting the dosage of barium carbonate (0 to 1. 0%),and combining multiple methods such as flammability test,
XRD phase analysis,microstructure morphology of the mineral phase and firing kinetics calculation,the influence on the mineral
formation and microstructure of clinker was systematically evaluated. The results showed that the introduction of barium carbonate
can significantly reduce the apparent activation energy for the formation of C3S,from 199. 04 kJ/ mol of the reference
sample to 104. 06 kJ/ mol at a dosage of 0. 8%,effectively improving the combustibility and reaction rate of raw materials. Ba2+
can partially replace Ca2+ in clinker minerals,which belongs to the isomorphic phenomenon. It helps regulate the structure of
the silicon-oxygen network and induce the good development of C3S crystals,improving the morphology and structural compactness
of minerals. In addition,the introduction of barium carbonate alleviates the defects of high crystallinity and weak reactivity
of the separated quartz obtained from the treatment of copper tailings,providing a feasible path for the large-scale and high-value
utilization of copper tailings.

Key words: siliceous raw material,barium salt,mineralizer,mineralization mechanism

中图分类号:

TQ172

颜美帼, 　任鑫燕, 　徐　迅　吴　鑫, 　宋猛猛. 碳酸钡矿化剂在铜尾矿基硅质原料熟料煅烧中的作用机制研究#br#[J]. 金属矿山, 2025, 54(10): 279-285.

YAN Meiguo, 　REN Xinyan, 　XU Xun　WU Xin, 　SONG Mengmeng. Study on the Mechanism of Barium Carbonate Mineralizer in the Calcination of Copper Tailings Based Siliceous Raw Material Clinker#br#[J]. Metal Mine, 2025, 54(10): 279-285.

扫码分享