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Introduction Advanced compound material is since 1976, through the development of more than 30 years, already extensively applied in the realms, such as aviation and aerospace etc.
[2] S．H．Yeo,K．Ramesh, Z.W.Zhong．Ultra—high-speed grinding spindle characteristics upon using oil／air mist lubrication[J]．International Journal of Machine Tools＆Manufacture．2002(42)：815—823
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A Comparison on Tailings Treatment and Disposal of Aba Lead-Zinc Concentrator Shu Zhao1,a, Siqing Liu2,*, Baoxu Song2,b, Jize Pan1,c 1Research and Design Institute of Yunnan Tin Group, Gejiu 641000, China 2 Department of Mineral Processing Engineering, Kunming University of Science and Technology, Kunming 650093, China asam647@163.com, b690880140@qq.com, c383070757@qq.com *Corresponding author: 647647@163.com, Fax: +86-0871-5187068 Keywords: Tailings; Dewatering; Dry disposal Abstract.
Then the oversize (dry material A) and the dry cake (dry material B) can easily be transported to the stock pile.
Once the worked out section has formed, the dry tailings material can be moved to there by carry-scrapers directly.
References [1]Xu Yuming, Dabros T, Kan Jianmin: submitted to Journal of Process Safety and Environmental Protection (2008) [2]Liang Guohai, Hong Xiaopeng: submitted to Journal of Gold (2003) (In Chinese) [3]Naureen Alam, Orhan Ozdemir, Marc A.
Nguyen: submitted to Journal of Fuel (2011) [4]Fang Yonghao, Gu Yamin, Kang Qiubo, Wen Quan, Dai Pin: submitted to Journal of Construction and Building Materials (2011) [5]Luis Moreno, Ivars Neretnieks: submitted to Journal of Hydrometallurgy (2006)

DOAE, F-59313 Valenciennes, France a,*khaoulaomri2@yahoo.fr , brabebbelghouthi@gmail.com , cmichel.aillerie@univ-lorraine.fr ,drached_gharbifr@yahoo.fr Keywords: Perovskite; solar cells; Electron transport materials; Hole transport materials; Defect density.
In contrast, inorganic materials have high hole mobility and conductivity, and in this case, HTM layer allows a high Voc for the PSC.
Seok, High-performance photovoltaic perovskite layers fabricated through intramolecular exchange, Science 348(2015) 1234 -1237
Ghorashi, The Effect of SnO2 and ZnO on the Performance of Perovskite Solar Cells, Journal of Electronic Materials. 49(2020), 364–376
Gong, Nano-structured electron transporting materials for perovskite solar cells, Nanoscale 8(2016) 6209–6221

Porphyrin and its derivatives are ideal materials for the decoration of SWCNTs.
Chen, Journal of Porphyrins and Phthalocyanines, 6, 241(2002)
Prato, Journal of Material Chemistry, 16, 62(2006)
Nakashima, Science and Technology of Advanced Materials, 7, 609(2006)
Xu, Journal of materials chemistry, 19, 8950(2009).

Materials and methods 2.1 Materials The blast furnace dust used in the study was obtained from Jinan Iron and Steel Co.
All of the reagents are AR. 2.2 Preparation of composite flocculation Blast furnace dust and aluminum gray were immersed in hydrochloride with different temperatures, stripping time and ratios of acid and materials.
Cheremisinoff, Hazardous Materials and Waste Management, 1995, Pages 53-70 [7] Choi, S.Y., Park, L.S., Im, S.H., Ryoo, J.J., Choi, S.J., Hwang, W.J., 1998.
Journal of the Korean Industrial and Engineering Chemistry 9 (7), 1043–1046 [8] Y.
Environmental science and technology (China), (2004), 27, 28, 29, 51

Materials Science and Technology, 2004, 12(5): 524-528.
Journal of Materials Science, 2005, 40(16): 4387-4390
Journal of materials processing technology, 2009, 209: 2887–2891
Materials Letters, 2006, 60: 109-113
Journal of Materials Processing Technology, 2003, 142: 725-737.

Journal of Materials Science and Engineering, 2003,21: 430-435 [2] V.M.Malhotra, P.K.Mehta.
Journal of Hazardous Materials, 2007,139：506-513 [4] Van Jaarsveld J G S, van Deventer J G J,Lukey G C.
The characterization of source materials in fly ash-based geopolymers.
Materials Letters, 2003, 57: 1272-1280 [5] Djwantoro Hardjito, Dody M.
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Safety culture of enterprises is divided into four parts by most scholars: safety material culture, safety spirit culture, safety system culture and safety behavior culture.
0.000 0.189 0.187 0.252 0.372 0.200 0.184 0.320 0.296 According to Table 2, we can find the weight vector A1 of safety material culture.
Thus, the evaluation vector B1 of safety material culture is calculated as follows: B1=A1R1= (0.1730, 0.3175, 0.3654, 0.1441) Similarly, we can calculate the evaluation vector B2, B3 and B4.
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It not only provides a wide range of food, raw materials and water resources, but also plays an important role in maintaining ecological balance and biodiversity, water conservation, waterforuseinadrought, degradation of pollution, regulating climate, supplementary groundwater, prevent erosion and so on.
(Source material: Final Feasibility Report and PEIS 1999 [5]) Natural Measures.
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The strong and narrow diffraction peaks indicate that the material has a good crystallinity.
Feick, et al.: Science Vol.292(2001), p.1897 [2] M.
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