高钙钒渣焙烧过程中硅酸盐矿物变化特征研究

硅酸盐通报 ›› 2022, Vol. 41 ›› Issue (5): 1734-1741.

高钙钒渣焙烧过程中硅酸盐矿物变化特征研究

高健^1,2,3, 史志新^1,2,3, 钟祥^1,2,3

1.钒钛资源综合利用国家重点实验室,攀枝花 617000;
2.攀钢集团研究院有限公司,攀枝花 617000;
3.四川攀研检测技术有限公司,攀枝花 617000

收稿日期:2021-12-21 修回日期:2022-02-02 出版日期:2022-05-15 发布日期:2022-06-01
作者简介:高健(1989—),男,工程师。主要从事工艺矿物学研究。E-mail:gaojian3318@163.com

Variation Characteristics of Silicate Minerals During Roasting Process of High Calcium Vanadium Slag

GAO Jian^1,2,3, SHI Zhixin^1,2,3, ZHONG Xiang^1,2,3

1. State Key Laboratory of Vanadium and Titanium, Resources Comprehensive Utilization, Panzhihua 617000, China;
2. Pangang Group Research Institute Co., Ltd., Panzhihua 617000, China;
3. Sichuan Panyan Testing Technology Co., Ltd., Panzhihua 617000, China

Received:2021-12-21 Revised:2022-02-02 Online:2022-05-15 Published:2022-06-01

摘要/Abstract

摘要： 作为钒渣体系的重要组成部分,查明硅酸盐矿物在焙烧阶段的变化特征有助于更好掌握钒渣体系在焙烧过程的演变规律,对指导焙烧工艺的改进具有重要意义。文章综合应用X射线衍射分析仪、矿物分析仪、扫描电镜以及能谱仪等技术手段对高钙钒渣焙烧阶段主要硅酸盐矿物的变化特征进行分析,结果表明:铁橄榄石的氧化分解温度区间为334~850 ℃,分解初期颗粒内外形成非晶态石英,随温度上升,铁橄榄石颗粒外缘出现逐渐加厚的氧化铁边直至颗粒完全分解,其分解产物为石英和氧化铁;钙铁辉石的氧化分解温度区间为334~850 ℃,分解初期同样以颗粒内外形成非晶态石英为标志,随温度上升,钙铁辉石颗粒外缘出现钒酸钙环带和氧化铁直至颗粒完全分解,其分解产物主要为石英、钒酸钙和氧化铁;硅酸二钙的反应温度区间为640~850 ℃,反应初期以颗粒外缘出现钒酸钙环带为标志,随温度升高,硅酸二钙逐渐分解,其分解产物主要为钒酸钙、石英和氧化铁。

关键词: 高钙钒渣, 硅酸盐矿物, 铁橄榄石, 钙铁辉石, 硅酸二钙, 焙烧过程

Abstract: As an important part of the vanadium slag system, finding out the various characteristics of silicate minerals in the roasting stage will help to better grasp the evolution law of the vanadium slag system during the roasting process, and it is of great significance to guide the improvement of the roasting process. In this paper, the variation characteristics of main silicate minerals in the roasting stage of high calcium vanadium slag were analyzed through X-ray diffraction analyzer, mineral analyzer, scanning electron microscope and energy dispersive spectrometer. The results show that the temperature range of oxidative decomposition of fayalite is 334~850 ℃. At the initial stage of decomposition, amorphous quartz forms inside and outside the particles. With the increase of temperature, a gradually thickened iron oxide edge forms on the outer edge of fayalite particles until the particles are completely decomposed, and its decomposition products are quartz and iron oxide. The temperature range of oxidative decomposition of hedenbergite is 334~850 ℃, and the initial stage of decomposition is also marked by the formation of amorphous quartz inside and outside the particles. As the temperature rises, calcium vanadate ring and iron oxide appears on the outer edge of the hedenbergite particles until the particles are completely decomposed. And its decomposition products are mainly quartz, calcium vanadate and iron oxide. The reaction temperature range of dicalcium silicate is 640~850 ℃, and the initial stage of the reaction is marked by the presence of a calcium vanadate ring on the outer edge of the particles. With the increase of temperature, dicalcium silicate is gradually decomposed, and its decomposition products are mainly calcium vanadate, quartz and iron oxide.

Key words: high calcium vanadium slag, silicate mineral, fayalite, hedenbergite, dicalcium silicate, roasting process

中图分类号:

TF80

高健, 史志新, 钟祥. 高钙钒渣焙烧过程中硅酸盐矿物变化特征研究[J]. 硅酸盐通报, 2022, 41(5): 1734-1741.

GAO Jian, SHI Zhixin, ZHONG Xiang. Variation Characteristics of Silicate Minerals During Roasting Process of High Calcium Vanadium Slag[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2022, 41(5): 1734-1741.

参考文献

[1] 孟利鹏,王少娜,杜浩,等.钒渣焙烧-碱浸提钒工艺焙烧过程机理[J].过程工程学报,2016,16(3):445-451.
MENG L P, WANG S N, DU H, et al. Process mechanism of vanadium-containing slag roasting and alkali leaching[J]. The Chinese Journal of Process Engineering, 2016, 16(3): 445-451 (in Chinese).
[2] 李晓军,张润平,谢兵.钒渣钙化焙烧参数对钒浸出率的影响[J].过程工程学报,2012,12(1):54-58.
LI X J, ZHANG R P, XIE B. Effects of vanadium-containing slag calcium roasting conditions on leaching rate of vanadium[J]. The Chinese Journal of Process Engineering, 2012, 12(1): 54-58 (in Chinese).
[3] 张菊花,张伟,杨勇霞,等.钒渣钙化焙烧的影响因素及焙烧氧化动力学[J].东北大学学报(自然科学版),2014,35(6):831-835.
ZHANG J H, ZHANG W, YANG Y X, et al. Influencing factors of vanadium slag roasting with calcium and oxidation kinetics for roasting process[J]. Journal of Northeastern University (Natural Science), 2014, 35(6): 831-835 (in Chinese).
[4] 付念新,张林,刘武汉,等.钒渣钙化焙烧相变过程的机理分析[J].中国有色金属学报,2018,28(2):377-386.
FU N X, ZHANG L, LIU W H, et al. Mechanism analysis of phase transformation process in calcified roasting of vanadium slags[J]. The Chinese Journal of Nonferrous Metals, 2018, 28(2): 377-386 (in Chinese).
[5] 史志新.钒渣钠化焙烧过程中钒尖晶石和铁橄榄石的变化规律表征[J].有色金属(选矿部分),2018(4):4-8+14.
SHI Z X. Characterization of variation of vanadium spinel and fayalite during the calcination of vanadium slag[J]. Nonferrous Metals (Mineral Processing Section), 2018(4): 4-8+14 (in Chinese).
[6] 付念新,张林,刘武汉,等.钒渣添加石灰石氧化焙烧过程中物相的转化行为[J].过程工程学报,2017,17(2):285-291.
FU N X, ZHANG L, LIU W H, et al. Behavior of phase transformations in oxidation roasting of vanadium slags with participation of limestone[J]. The Chinese Journal of Process Engineering, 2017, 17(2): 285-291 (in Chinese).
[7] 王春梅,刘锦燕,史志新,等.钒渣物相结构及钙化焙烧相变对钒转化率的影响因素探讨[J].冶金分析,2015,35(6):26-30.
WANG C M, LIU J Y, SHI Z X, et al. Discussion on the influence factor of vanadium slag phase structure and calcification roasting phase transition on vanadium conversion rate[J]. Metallurgical Analysis, 2015, 35(6): 26-30 (in Chinese).
[8] 王俊,孙朝晖,苏毅,等.高钙高磷钒渣焙烧浸出的研究[J].稀有金属,2015,39(11):1038-1042.
WANG J, SUN Z H, SU Y, et al. Roasting and leaching of high calcium and high phosphorus vanadium slag[J]. Chinese Journal of Rare Metals, 2015, 39(11): 1038-1042 (in Chinese).
[9] 王俊,孙朝晖,余晓春,等.高钙高磷钒渣提钒工艺研究进展[J].金属矿山,2014(6):79-82.
WANG J, SUN Z H, YU X C, et al. Progress in vanadium extraction from high calcium and high phosphorus vanadium slag[J]. Metal Mine, 2014(6): 79-82 (in Chinese).
[10] 李宏,王艳南,宋文臣.熔融态高钙高磷钒渣氧化钠化-水浸提钒[J].重庆大学学报,2015,38(2):138-142.
LI H, WANG Y N, SONG W C. Vanadium extraction from molten vanadium slag with high contents of Ca and P by direct oxidation and adding Na₂CO₃ and water leaching method[J]. Journal of Chongqing University, 2015, 38(2): 138-142 (in Chinese).
[11] 范鹤林,陈登福,徐松,等.高钙钒比钒渣钠化焙烧熟料浸出条件研究[J].过程工程学报,2013,13(6):958-963.
FAN H L, CHEN D F, XU S, et al. Research on leaching conditions of sodium roasted vanadium slag with high Ca/V ratio[J]. The Chinese Journal of Process Engineering, 2013, 13(6): 958-963 (in Chinese).
[12] 彭毅,谢屯良,周宗权,等.高钙高磷低品位钒渣制取V₂O₅的研究[J].铁合金,2007,38(4):18-23.
PENG Y, XIE T, ZHOU Z Q, et al. Preparation V₂O₅ from low grade vanadiumbearing slag of high calcium and high phosphor[J]. Ferro-Alloys, 2007, 38(4): 18-23 (in Chinese).
[13] 王俊,付自碧,蒋霖.高钙高磷钒渣酸浸除磷研究[J].稀有金属,2018,42(3):331-336.
WANG J, FU Z B, JIANG L. Phosphorus removal of high calcium and high phosphorus vanadium slag in acid system[J]. Chinese Journal of Rare Metals, 2018, 42(3): 331-336 (in Chinese).
[14] 李新生.高钙低品位钒渣焙烧-浸出反应过程机理研究[D].重庆:重庆大学,2011.
LI X S. Mechanism research on oxidation roasting and leaching process of high calcium low-grade vanadium slag[D]. Chongqing: Chongqing University, 2011 (in Chinese).
[15] 任允芙.冶金工艺矿物学[M].北京:冶金工业出版社,1996:186-196.
REN R F. Metallurgical process mineralogy[M]. Beijing: Metallurgical Industry Press, 1996: 186-196 (in Chinese).
[16] 石晓燕,廖曾丽,张怀伟,等.铁橄榄石的氧化动力学研究[J].中国有色冶金,2013,42(4):74-78.
SHI X Y, LIAO Z L, ZHANG H W, et al. Research of oxidation kinetics of fayalite[J]. China Nonferrous Metallurgy, 2013, 42(4): 74-78 (in Chinese).