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The materials input in the process include energy, water and raw materials. 
Water and gangue are the main materials could be recycled.
The amount of recycled materials was 9,733,400t and material consumption was 73,378,500t. 
Recycled materials account for 5.24% of total material requirements.
[6] Guiying Gao, et al: Journal of Ningxia University (Natural Science Edition). 2009, 30(4):411-414.

All materials were studied their composition, microstructure and optical properties. 2.
All diffraction intensities were identified for both materials using Match software.
WinPLOTR: a Windows tool for powder diffraction patterns analysis Materials Science Forum.
Structure analysis Crystal structure of materials was determine by XRD technique.
The statistical distribution of values are shown in Figures 4b, 5b and 6b with 10±2 nm, 2.5±0.4 nm and 8±1.7 nm for as synthesized ZnO and ZnO2, and for ZnO obtained by annealing, respectively; the last two materials have narrow size distribution, confirming the material synthesis methodology for both materials are adequately.

However certain cylindrical products which are made of hard materials are cast.
References [1] Hai-Liang Yu, Jin-Wu Kang, and Tian-You Huang, "Efficient and economical manufacture of heavy steel castings," Frontiers of Materials Science in China, vol. 4, pp.332-338, 2010/12/01 2010
Dantzig, "Optimal riser design for metal castings," Metallurgical and Materials Transactions B, vol. 26, pp. 871-885, 1995/08/01 1995
Chao, "An investigation into the effective heat transfer coefficient in the casting of aluminum in a green-sand mould," Materials transactions, vol. 50, pp. 1396-1403, 2009
[14] S Sun, M Brandt, and MS Dargusch, "Thermally enhanced machining of hard-to-machine materials—a review," International Journal of Machine Tools and Manufacture, vol. 50, pp. 663-680, 2010

Semarang 5 Malang 65145, Indonesia 2Centre of Advanced Materials for Renewable Energy, Universitas Negeri Malang, Jl.
Morkoç, A comprehensive review of ZnO materials and devices, Journal of Applied Physics 98 (2015) 041301 [2] R.
Xie, ZnO-Based Light-Emitting Diodes, Optoelectronics - Advanced Materials and Devices, S.
Briscoe., Control of oxygen vacancies in ZnO nanorods by annealing and their influence on ZnO/PEDOT:PSS diode behaviour, Journal of Materials Chemistry C 6 (2018) 1815–1821 [9] H.
Harrison, Synthesis, structural and optical properties of Ni-doped ZnO micro-spheres, Journal of Materials Science: Materials in Electronics, 24 (2013) 1670–1676 [23] S.

To obtain a reliable figure of thermal stress induced by grinding, temperature-dependent properties of workpiece materials were taken into account.
To obtain a reliable figure of thermal stress, temperature-dependent properties of work materials should be taken into account.
Zhang, Residual stress in ground components caused by coupled thermal and mechanical plastic deformation, Journal of Materials Processing Technology 95 (1995)238-245
Chandrasekar, Simulation of thermal stress due to grinding, International Journal of Mechanical Sciences 43 (2001)831-851
Hamdi, Hassan Zahouani, Jean-Michel Bergheau, Residual stress computation in a grinding process, Journal of Materials Processing Technol [12] ogy 147 (2004)277-285.

Materials and experimental methods Materials.
Journal of Railway Science and Engineering.Vol,6(2009), p1(In Chinese) [6] Qiang Wang, Peiyu Yan, A Ruhan.
Journal of Building materials.Vol,12(2009), p519(In Chinese) [7] Hun Song, Jeongyun Do, Yangseob Soh.
Construction and Building Materials.
Construction and Building Materials.

Experimental procedure Pure aluminum and Al3003 alloy, the core materials were used in this experiment.
Core materials were manufactured by using induction furnace and homogenous heat treatment was performed.
Table 1 showed the chemical composition of the core materials.
Results and discussion Fig. 2 showed the variation of flow stress of the sheath material and the core materials at 623K.
Kwon: International Journal of Mechanical Sciences Vol.44 (2002) p.247-267 [4] J.

Based on the previous study, different introduced varieties were used as materials in this test for the identification and varieties selection of tomato resistant to late blight, by measuring the DIS of inoculated seedlings and detached leaves.
Materials and methods Materials.
Employ different tomato varieties O-33-1, A-10, 25-1 of Russia, Fugui, Kuiguan, Qingshou, Jianhuang of china and Naiyun 2000, Jingle 502 of Japan as the experimental materials.
[3] Xiangui Yin, Yun Zhang and Qifeng Yang: Southwest China Journal of Agricultural Sciences, 2004, 17(6), 797-797, in Chinese
[6] Chaowei Bi, Zhongkang Wang and Xingbi Che: Southwest China Journal of Agricultural Sciences, 2003, 16(1): 68- 70, in Chinese

The reason for this change may be that the organic acid generated at the earlier stage of the compost has been gradually decomposed or compound into humus with other materials with the proceeding of the compost, at the same time, the release and accumulation of NH3 cause the pH of materials to increase and stabilize at the end.
Manios: Journal of environmental science and health, part B: pesticides, food contaminants, and agricultural wastes.
Li : Journal of Anhui Agriculture Science.
Nie: Enironmental Science.
Zou: Journal of Soil and Water Conservation.

MATERIALS AND METHODS All the HAp containing calcium phosphate powder samples were prepared by calcination following a similar routine throughout this work.
Journal of Materials Science: Materials in Medicine, 4, 150- 158, (1993)
Journal of Materials Science In Medicine, 3, 299-305, (1992)
"Biodegradation of four calcium phosphate ceramic; in vivo rates and tissue interactions", Journal of Materials Science: Materials in Medicine, 2, 63-70, (1991)
Z.Le Geros, "Calcium Phosphates in Oral Biology and Medicine" Monographs in Oral Science, vol. 15, Ed.