以光伏产业晶硅切割废砂浆为主要原料,通过真空碳化法制备了 SiC 粉末。在通过物理和化学方法测定废砂浆组分含量的基础上,确定了初始原料 Si/C 配比。随后,利用 XRD 和 SEM 分别研究了真空热处理温度、无机碳源种类等对所制备粉末的物相和组织的影响,产物粉末的粒径分布范围通过激光粒度仪测试。研究表明,在900~1100℃温度范围,随着反应温度的升高,硅粉与活性炭的碳化反应越来越完全,并在1100℃完全生成了 SiC 粉末。继续升温,X 射线衍射峰的强度逐渐升高,SiC 产物粉末的粒度越来越大。此外,不同碳源在相同条件的碳化反应结果表明,活性炭作为碳源比石墨效果更佳。
SiC powder was prepared from crystalline silicon cutting waste mortar in photovoltaic industry by the method of vacuum carbonization.The proportion of Si/C was determined on the basis of test result of components con-tent in waste mortar by physical and chemical methods.After that,the influences of vacuum heat treatment tempera-ture,inorganic carbon source types on the phase and structure of the powder were studied by using XRD and SEM. Particle size distribution was tested by laser particle size instrument.Researches showed that,with the increase of car-bonization temperature in the range of 900-1 100 ℃,the reaction of Si and activated carbon gradually progressed,and completely reacted at 1 100 ℃.When the temperature continued to be raised,X-ray diffraction peak intensity gradually increased,and particle size of SiC powder rose.In addition,carbonization reaction with different carbon sources under the same conditions inferred that activated carbon acted better as a carbon source than graphite.
参考文献
| [1] | Sumeet Bhagavat;Imin Kao .Theoretical analysis on the effects of crystal anisotropy on wiresawing process and application to wafer slicing[J].International Journal of Machine Tools & Manufacture: Design, research and application,2006(5):531-541. |
| [2] | Neesse T .Review on SiC recycling in wafer sawing opera-tion[J].Interceram,2005,55(6):430. |
| [3] | 邢鹏飞,赵培余,郭菁,刘燕,李峰,涂赣峰.太阳能级多晶硅切割废料浆的综合回收[J].材料导报,2011(01):75-79. |
| [4] | 李吉超,黄凯,储少军,朱鸿民.太阳能级硅切割废料的回收技术[J].材料导报,2011(19):123-126. |
| [5] | 铁生年,侯思懿,汪长安,王涛.新能源硅产业碳化硅切割废料回收利用研究进展[J].科技导报,2013(04):74-79. |
| [6] | M. Yamaguchi;Y. Ohshita;K. Arafune;H. Sai;M. Tachibana .Present status and future of crystalline silicon solar cells in Japan[J].Solar Energy,2006(1):104-110. |
| [7] | Zhang LF;Ciftja A .Recycling of solar cell silicon scraps through filtration, Part I: Experimental investigation[J].Solar Energy Materials and Solar Cells: An International Journal Devoted to Photovoltaic, Photothermal, and Photochemical Solar Energy Conversion,2008(11):1450-1461. |
| [8] | Marie-Laure Bouchetoua;Jean-Pierre Ildefonse;Jacques Poi-rier et al.Mullite grown from fired andalusite grains:The role of impurities and of the high temperature liquid phase on the kinetics of mullitization and consequences on thermal shocks resistance[J].CERAMICS INTERNATIONAL,2005,31:999. |
| [9] | Lin Yen-Chih;Wang Tengyu;Lan Chungwen et al.Re-covery of silicon powder from kerf loss slurry by centrifuga-tion[J].Powder Technology,2010,200:216. |
| [10] | Mühlbauer A;Diers V;Walther A et al.Removal of C/SiC from liquid silicon by directional solidification[J].Journal of Crystal Growth,1991,108:41. |
| [11] | Yen-Chih Lin;Clifford Y. Tai .Recovery of silicon powder from kerfs loss slurry using phase-transfer separation method[J].Separation and Purification Technology,2010(2):170-177. |
| [12] | Shigehiro Nishijima;Yoshinobu Izumi;Shin-ichi Takeda;Hiroki Suemoto;Atsushi Nakahira;Shin-ichi Horie .Recycling of abrasives from wasted slurry by superconducting magnetic separation[J].IEEE Transactions on Applied Superconductivity: A Publication of the IEEE Superconductivity Committee,2003(2 Pt.2):1596-1599. |
| [13] | Tzu-Hsuan Tsai;Jui-Hsiung Huang .Metal removal from silicon sawing waste using the electrokinetic method[J].J Taiwan Inst Chem Engineers,2009,40:1. |
| [14] | Tzu-Hsuan Tsai .Pretreatment of recycling wiresaw slurries-Iron removal using acid treatment and electrokinetic separation[J].Separation and Purification Technology,2009(1):24-29. |
| [15] | Ewa Klugmann-Radziemska;Piotr Ostrowski .Chemical treatment of crystalline silicon solar cells as a method of re-covering pure silicon from photovoltaic modules[J].Renew Energy,2010,35:175 1. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%