攀枝花钛渣流化焙烧试验研究
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摘要
针对用于生产特种焊接材料的钛系原料对其品质要求,进行了流态化焙烧攀枝花钛渣的试验研究。考察了焙烧温度为950℃,空气流量为3.3 m3/h,螺旋推料器频率为45.4 Hz条件下,流化焙烧对钛渣品质的影响。结果表明,由于焙烧过程中细颗粒直接被吹出流化床腔体而被冷却水吸收,流化焙烧后,钛渣颗粒变粗,粒度增大;XRD及Raman分析显示,攀枝花钛渣经流化氧化焙烧后,钛渣中发生晶型转变,610 cm-1处振动特征峰发生红移,低价钛转变成高价钛,金红石型Ti O2长大增多。
In order to meet the quality requirements of the titanium materials used in the production of special welding material,the experimental study of fluidized bed roasting of Panzhihua titanium slag was carried out. In this study,the influence of fluidized roasting on titanium slag quality was investigated under the condition of the roasted temperature 950 ℃,the air flow rate 3. 3 m3/h and the screw pusher frequency 45. 4 Hz. The results showed that the fine particles were directly blown out of the fluidized bed and were absorbed by the cooling water.After the fluidized roasting,the titanium slag particles becomes thicker and the particle size increases. XRD and Raman analysis revealed that after the fluidized bed oxidation roasting of Panzhihua titanium slag,the crystal transformation occurred in the titanium slag,the vibration characteristic peak of 610 cm-1 was red shifted,the low valent titanium turned into high valent titanium,and the growth of rutile Ti O2 increased.
In order to meet the quality requirements of the titanium materials used in the production of special welding material,the experimental study of fluidized bed roasting of Panzhihua titanium slag was carried out. In this study,the influence of fluidized roasting on titanium slag quality was investigated under the condition of the roasted temperature 950 ℃,the air flow rate 3. 3 m3/h and the screw pusher frequency 45. 4 Hz. The results showed that the fine particles were directly blown out of the fluidized bed and were absorbed by the cooling water.After the fluidized roasting,the titanium slag particles becomes thicker and the particle size increases. XRD and Raman analysis revealed that after the fluidized bed oxidation roasting of Panzhihua titanium slag,the crystal transformation occurred in the titanium slag,the vibration characteristic peak of 610 cm-1 was red shifted,the low valent titanium turned into high valent titanium,and the growth of rutile Ti O2 increased.
引文
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[24]张会丰,曾玺,崔丽杰,等.石煤提钒流化床焙烧条件优化[J].煤炭学报,2014,39(12):2531-2536.
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[2]杨坤,朱红波,彭金辉,等.微波焙烧高钛渣中试研究[J].矿冶工程,2014,23(2):77-79.
[3]CHEN G,CHEN J,SONG Z,et al.A new highly efficient method for the synthesis of rutile Ti O2[J].Journal of Alloys&Compounds,2014,585(1):75-77.
[4]陈菓,陈晋,彭金辉,等.高温焙烧高钛渣工艺的试验研究[J].轻金属,2009(2):46-48.
[5]孙康.钛提取冶金物理化学[M].北京:冶金工业出版社,2001:7-18.
[6]蒋伟,蒋训雄,汪胜东,等.高钛渣制备人造金红石工艺研究[J].有色金属(冶炼部分),2012(3):22-25.
[7]董海刚,郭宇峰,姜涛,等.高钙镁型钛渣物相重构法制取人造金红石[J].中国有色金属学报,2012,22(9):2642-2647.
[8]LIU S S,GUO Y F,QIU G Z,et al.Preparation of Ti-rich material from titanium slag by activation roasting followed by acid leaching[J].Transactions of Nonferrous Metals Society of China,2013,23(4):1174-1178.
[9]王曾洁,张利华,王海北,等.盐酸常压直接浸出攀西地区钛铁矿制备人造金红石[J].有色金属,2007,59(4):108-111.
[10]FILIPPOU D,HUDON G.Iron removal and recovery in the titanium dioxide feedstock and pigment industries[J].JOM,2009,61(10):36-42.
[11]周建军,朱庆山,王化军,等.某鲕状赤褐铁矿流化床磁化焙烧—磁选工艺[J].过程工程学报,2009,9(2):307-313.
[12]王麟书,杜淼,吴妍.中国焊接协会[J].现代焊接,2014(10):3-5.
[13]苏允海,刘政军.国内外焊接材料的应用及发展趋势[J].现代焊接,2009(7):1-4.
[14]张凯,张元彬.焊条性能改进的研究进展[J].焊接技术,2010,39(11):1-5.
[15]杨坤,张利波,彭金辉,等.微波焙烧连续制备电焊条涂料人造金红石工业化试验研究[J].昆明理工大学学报(自然科学版),2014,39(5):6-10.
[16]雷鹰.电焊条用还原钛铁矿制备新工艺研究[D].昆明:昆明理工大学,2007:2-5
[17]张清辉.焊接材料研制理论与技术[M].北京:冶金工业出版社,2002:74-78.
[18]贾景岩.微波碳热还原钛铁矿制备焊条药皮[M].材料与冶金工程学院,2014:5-15.
[19]YAO C,DONG L,WANG Y,et al.Fluidized bed pyrolysis of distilled spirits lees for adapting to its circulating fluidized bed decoupling combustion[J].Fuel Processing Technology,2011,92(12):2312-2319.
[20]XU G W,YAO C B,DONG L.Spirits lees utilization via circulating fluidized bed decoupling combustion[C]//BIT’s 3rd World Congress of Industrial Biotechnology.2010:311-312.
[21]李云,刘洪晓,张立征,等.循环流态化固硫固砷焙烧金矿的试验及应用实践[J].矿冶,2016,25(4):29-32.
[22]冯文洁,白永民,樊俊钊.流态化焙烧技术与国内发展情况[J].山西冶金,2004,27(2):65-67.
[23]朱庆山,李洪钟.难选铁矿流态化磁化焙烧研究进展与发展前景[J].化工学报,2014,65(7):2437-2442.
[24]张会丰,曾玺,崔丽杰,等.石煤提钒流化床焙烧条件优化[J].煤炭学报,2014,39(12):2531-2536.
[25]廖雪峰,刘钱钱,胡途,等.高钛渣氧化焙烧行为研究[J].矿冶,2016,25(4):41-44.