脉冲微波助磨工艺参数对钛铁矿升温性能的影响研究

doi:10.11872/j.issn.1005-2518.2020.04.170

黄金科学技术 ›› 2020, Vol. 28 ›› Issue (4): 595-602.doi: 10.11872/j.issn.1005-2518.2020.04.170

脉冲微波助磨工艺参数对钛铁矿升温性能的影响研究

侯明^1,⁴(),李军^1,⁴,杨黎^1,^2,⁴,范培强⁵,郭胜惠^1,^2,^3,⁴(),严妍^1,⁴

^1.昆明理工大学冶金与能源工程学院，云南昆明 650093
^2.国家超硬材料先进制备技术国际联合研究中心，云南昆明 650093
^3.微波能工程应用和装备技术国家地方联合工程实验室，云南昆明 650093
^4.复杂有色金属资源清洁利用国家重点实验室，云南昆明 650093
^5.云南磷化集团有限公司，云南昆明 650600

收稿日期:2019-10-22 修回日期:2020-03-26 出版日期:2020-08-31 发布日期:2020-08-27
通讯作者: 郭胜惠 E-mail:houmingkmust@163.com;1978327655@qq.com
作者简介:侯明（1995-），男，辽宁锦州人，博士研究生，从事微波选矿和超硬材料制备研究工作。houmingkmust@163.com
基金资助:
国家自然科学基金项目“高功率脉冲微波场中矿物强化解离行为研究”(51664035);“微波—流场耦合强化软锰矿湿法还原浸出的基础研究”(U1802255);云南省应用基础研究计划“微波等离子体CVD制备金刚石膜基础研究”(2018FA029);云南省杰出青年基金“沉积金刚石膜的生长调控机制”(2019FJ006MPCVD);云南省“万人计划”青年拔尖人才专项(YNWRQNBJ-2018-311)

Study of Effect of Pulsed Microwave Assisted Grinding Process Parameters on the Ilmenite Heating Performance

Ming HOU^1,⁴(),Jun LI^1,⁴,Li YANG^1,^2,⁴,Peiqiang FAN⁵,Shenghui GUO^1,^2,^3,⁴(),Yan YAN^1,⁴

^1.Faculty of Metallurgical and Energy Engineering，Kunming University of Science and Technology，Kunming 650093，Yunnan，China
^2.State International Joint Research Center of Advanced Technology for Superhard Materials，Kunming University of Science and Technology，Kunming 650093，Yunnan，China
^3.National Local Joint Laboratory of Engineering Application of Microwave Energy and Equipment Technology，Kunming University of Science and Technology，Kunming 650093，Yunnan，China
^4.State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization，Kunming University of Science and Technology，Kunming 650093，Yunnan，China
^5.Yunnan Phosphate Group Co. ，Ltd. ，Kunming 650600，Yunnan，China

Received:2019-10-22 Revised:2020-03-26 Online:2020-08-31 Published:2020-08-27
Contact: Shenghui GUO E-mail:houmingkmust@163.com;1978327655@qq.com

摘要/Abstract

摘要：

为了提高钛铁矿回收效率，对钛铁矿在脉冲微波条件下的升温行为进行了研究，采用自制的脉冲微波设备，对钛铁矿进行脉冲微波预处理。研究了不同辐照时间、脉冲微波功率、矿样质量和不同矿样粒度对钛铁矿升温性能的影响。采用X射线衍射仪对矿样组成进行分析，利用激光粒度仪对样品粒度进行检测。研究结果表明：物料在微波场中的升温行为，既决定于矿物本身的性质，又与微波加热设备的功率密切相关。当矿样粒度为25 mm、质量为40 g、辐照时间为30 s、微波平均功率为3 kW时，样品的升温性能最好。该研究对脉冲微波在助磨领域的应用具有重要意义。

关键词: 脉冲微波, 钛铁矿, 升温性能, 工艺参数, 辐照时间, 助磨技术

Abstract:

Because of its light weight，high strength，and good corrosion resistance，the development and application of titanium have attracted widespread attention from Chinese and foreign scholars.The higher the content，the lower the grade of titanium concentrate that can be recovered，and it is difficult to improve the recovery rate.In order to improve the recovery efficiency of ilmenite，the heating behavior of ilmenite under pulsed microwave conditions was studied.In this study，pulsed microwave pretreatment of ilmenite was carried out using a self-made pulsed microwave device.The effects of different irradiation time，pulse microwave power，weight of ore sample and particle size of different ore samples on the heating performance of ilmenite were studied.The composition of the ore sample was analyzed by X-ray diffractometer，and the particle size of the sample was detected by a nano-laser particle size analyzer.The research results show that the heating behavior of materials in the microwave field is determined not only by the nature of the mineral itself，but also by the power of the microwave heating equipment.The temperature increase rate of ilmenite is significantly affected by the quality of the sample.At the same time，the change law shows consistency under different heating time conditions：When the mass of ilmenite is 40~60 g，the temperature increase rate reaches the maximum.The changes in the quality of ilmenite can significantly affect the heating temperature of the ore sample.Under the condition of a certain microwave power，the longer the microwave acts on the material，the higher the temperature of the ore sample.With the change of the particle size of the material，the microwave temperature showes a trend of increasing first and then decreasing.When the ore sample has a particle size of 25 mm，a weight of 40 g，an irradiation time of 30 s，and an average microwave power of 3 kW，the sample is heated to the best effect.The research in this paper is of great significance for the application of pulsed microwave in the field of grinding aid.

Key words: pulsed microwave, ilmenite, heating performance, process parameters, irradiation time, grinding aid technology

中图分类号:

TD951

侯明, 李军, 杨黎, 范培强, 郭胜惠, 严妍. 脉冲微波助磨工艺参数对钛铁矿升温性能的影响研究[J]. 黄金科学技术, 2020, 28(4): 595-602.

Ming HOU, Jun LI, Li YANG, Peiqiang FAN, Shenghui GUO, Yan YAN. Study of Effect of Pulsed Microwave Assisted Grinding Process Parameters on the Ilmenite Heating Performance[J]. Gold Science and Technology, 2020, 28(4): 595-602.

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矿物成分	质量分数	矿物成分	质量分数
TiO₂	52.86	MgO	2.01
Fe	35.12	SiO₂	1.86
CaO	3.22	其他	4.93

粒度/mm	温度/℃	粒度/mm	温度/℃
2	243	35	280
10	265	45	238
25	300

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脉冲微波助磨工艺参数对钛铁矿升温性能的影响研究

Study of Effect of Pulsed Microwave Assisted Grinding Process Parameters on the Ilmenite Heating Performance

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温度/℃	试验条件				温度/℃	试验条件
温度/℃	辐照时间/s	脉冲微波功率/W	矿样质量/g	矿样粒度/mm	温度/℃	辐照时间/s	脉冲微波功率/W	矿样质量/g	矿样粒度/mm
150	10	1 000	50	25	175	30	1 000	50	25
240	20	1 000	50	25	250	30	1 500	50	25
300	30	1 000	50	25	270	30	2 000	50	25
330	40	1 000	50	25	305	30	2 500	50	25
350	50	1 000	50	25	330	30	3 000	50	25
370	60	1 000	50	25	155	10	1 000	40	25
386	70	1 000	50	25	242	20	1 000	40	25
398	80	1 000	50	25	320	30	1 000	40	25
409	90	1 000	50	25	360	40	1 000	40	25
420	100	1 000	50	25	380	50	1 000	40	25
429	110	1 000	50	25	400	60	1 000	40	25
440	120	1 000	50	25	150	10	1 000	50	25
90	10	1 000	20	25	240	20	1 000	50	25
168	10	1 000	40	25	300	30	1 000	50	25
170	10	1 000	60	25	326	40	1 000	50	25
132	10	1 000	80	25	352	50	1 000	50	25
95	10	1 000	100	25	370	60	1 000	50	25
182	20	1 000	20	25	140	10	1 000	60	25
256	20	1 000	40	25	234	20	1 000	60	25
248	20	1 000	60	25	308	30	1 000	60	25
185	20	1 000	80	25	326	40	1 000	60	25
145	20	1 000	100	25	352	50	1 000	60	25
250	30	1 000	20	25	360	60	1 000	60	25
320	30	1 000	40	25	243	30	1 000	50	2
295	30	1 000	60	25	265	30	1 000	50	10
210	30	1 000	80	25	300	30	1 000	50	25
176	30	1 000	100	25	280	30	1 000	50	35
25	30	0	50	25	238	30	1 000	50	45
110	30	500	50	25