煅烧晶种加量对钛白粉质量的影响研究

吴健春; 路瑞芳; 孙蔷; 石瑞成; 刘婵

doi:10.7513/j.issn.1004-7638.2023.01.003

煅烧晶种加量对钛白粉质量的影响研究

doi: 10.7513/j.issn.1004-7638.2023.01.003

吴健春^1,,
路瑞芳^{1, 2, ,},
孙蔷³,
石瑞成¹,
刘婵¹

1.
钒钛资源综合利用国家重点实验室, 攀钢集团研究院有限公司, 四川攀枝花 617000
2.
重庆大学化学化工学院, 重庆400030
3.
东北大学冶金学院, 辽宁沈阳 110819

基金项目: 国家自然科学基金青年科学基金项目（编号：22108019）

详细信息

作者简介:
吴健春，1978年出生，男，四川简阳人，高级工程师，主要从事硫酸法钛白及纳米二氧化钛的工艺开发及应用研究，E-mail: wujianchun@126.com

通讯作者:
路瑞芳，高级工程师，E-mail: 19982312680@163.com

中图分类号: TF823,TB34
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出版历程
- 收稿日期: 2022-01-15
- 刊出日期: 2023-02-28

Study on the effect of calcined seed crystal addition on the quality of TiO₂

1.
State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization, Pangang Group Research Institute Co., Ltd., Panzhihua 617000, Sichuan, China
2.
School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400030, China
3.
School of Metallurgy, Northeastern University, Shenyang 110819, Liaoning, China

摘要

摘要: 以水解偏钛酸和煅烧晶种为原料，在偏钛酸中加入不同比例的煅烧晶种，通过调整煅烧温度制备金红石含量98%～99%的钛白初品,考察煅烧晶种加量对煅烧温度的影响。然后通过XRD、SEM等手段对钛白粉的晶体结构、形貌、粒度分布和颜料性能进行分析。结果表明：随着煅烧晶种加量增加，金红石合格所需煅烧温度呈现下降趋势，煅烧晶种加量在4%～6%时对金红石合格所需煅烧温度影响不大。随着晶种加量的增加，初品平均粒径呈现下降趋势，离散系数呈现先下降后增加的趋势，当晶种加量达到6%，离散系数最小。随煅烧晶种加量的增加，铝系和锌系盐处理样品的蓝相（SCX）均随晶种加量的增加呈现增加趋势，消色力（TCS）均呈现先增加后降低的趋势，煅烧晶种加量在5%左右时，样品消色力达到最佳值。
- 二氧化钛 /
- 煅烧晶种 /
- 粒度分布 /
- 离散系数 /
- 颜料性能
Abstract: Using hydrolyzed metatitanic acid and calcined seed crystals as raw materials, different proportions of calcined seed crystals were added to metatitanic acid, and the calcination temperature was adjusted to prepare the TiO₂ product with a rutile content of 98% to 99%. The influence of the amount of calcined seed crystals on the calcining temperature was investigated. Then the crystal structure, morphology, particle size distribution and pigment properties of the TiO₂ were analyzed by XRD, SEM and other means. The results show that as the content of calcined seed crystals increases, the calcination temperature required for qualified rutile shows a downward trend. When the amount of calcined seed crystals increases from 4% to 6%, the required calcination temperature has little effect. As the amount of seed crystals increases, the average particle size of the TiO₂ product shows a downward trend, and the dispersion coefficient shows a trend of first decreasing and then increasing. When the amount of seed crystals increases to 6%, the dispersion coefficient is the smallest. With the increase in the amount of calcined seed crystals, the SCX value of the aluminum-based and zinc-based salt treated samples showed an increasing trend with the increase in the amount of seed crystals, and the TCS value showed a trend of first increasing and then decreasing. When the amount of calcined seed crystals is about 5%, the TCS value of the sample reaches the best value.
- titanium dioxide /
- calcined seed crystal /
- particle size /
- dispersion coefficient /
- pigment performance

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图 1 热处理前后煅烧晶种SEM形貌

Figure 1. SEM pictures of calcined seeds before and after heat treatment

下载: 全尺寸图片幻灯片

图 2 煅烧晶种加量对煅烧温度的影响

Figure 2. The effect of calcined seed crystal addition on the calcination temperature

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图 3 不同煅烧晶种加量的钛白初品SEM照片

Figure 3. SEM photos of TiO₂ products with different calcined seed crystals

下载: 全尺寸图片幻灯片

图 4 煅烧晶种加量对初品粒度分布的影响

Figure 4. The influence of the amount of calcined seed crystals on the particle size distribution of TiO₂

下载: 全尺寸图片幻灯片

图 5 晶种加量对钛白初品颜料性能的影响

Figure 5. The influence of the amount of calcined seed crystals on the properties of TiO₂

下载: 全尺寸图片幻灯片

表 1 煅烧晶种加量对晶胞参数的影响

Table 1. The effect of calcined seed crystal addition on unit cell parameters

类别	晶种加量/%	锐钛相			金红石相
类别	晶种加量/%	a/nm	c/nm	晶胞体积/nm³	a/nm	c/nm	晶胞体积/nm³
铝系	2	0.378 387 2	0.951 015 3	0.136 16	0.459 279 4	0.295 787 7	0.062 39
	4	0.378 405 1	0.950 974 4	0.136 17	0.459 280 8	0.295 779 2	0.062 39
	6	0.378 414 5	0.951 006 9	0.136 18	0.459 302 3	0.295 802 1	0.062 40
	8	0.378 427 6	0.951 021 2	0.136 19	0.459 308 0	0.295 807 8	0.062 40
锌系	2	0.378 429 5	0.951 082 2	0.136 20	0.459 310 5	0.295 826 0	0.062 41
	4	0.378 432 3	0.951 098 5	0.136 21	0.459 309 7	0.295 824 1	0.062 41
	6	0.378 446 2	0.951 068 0	0.136 21	0.459 330 2	0.295 833 6	0.062 42
	8	0.378 452 3	0.950 995 6	0.136 21	0.459 311 3	0.295 824 2	0.062 41

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参考文献(8)

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