scholarly journals Situation and trends of recycling of container packaging, especially waste plastic products. Blast furnace feed recycling system of waste plastics.

1997 ◽  
Vol 26 (12) ◽  
pp. 815-819
Author(s):  
Kenichi NEMOTO ◽  
Mikoto IEMOTO ◽  
Shinya SEKINE
2003 ◽  
Vol 11 (6) ◽  
pp. 433-440 ◽  
Author(s):  
Debes Bhattacharyya ◽  
Krishnan Jayaraman

Plastic products used for packaging are often discarded after a single use resulting in an inexhaustible supply of waste polymeric materials. The stiffness and strength of polymeric materials have been known to improve with the addition of lignocellulosic fibres available in abundance in nature. Hence, composite materials containing natural fibres and waste plastics would result in the reduction of solid wastes and the use of cheap, renewable resources. Composite sheets have been manufactured from Pinus Radiata woodfibre mats produced by a novel mat forming technique and Kerbside waste plastics. The tensile modulus and strength of these composite sheets have been shown to improve with the amount of woodfibres. The formability of these sheets has been assessed through dome forming. The presence of woodfibres reduces the localised thinning while thermoforming, which is a significant advantage since excessively thin areas may cause component weakness and as a result, defective parts. Complex parts have been thermoformed successfully from these composite sheets confirming the enormous potential for their use in industry.


2018 ◽  
Vol 4 (11) ◽  
pp. 6
Author(s):  
Upendra Kumar ◽  
Avinash Patidar ◽  
Bhupendra Koshti

The design and control of blast furnace (BF) ironmaking must be optimized in order to be competitive and sustainable, particularly under the more and more demanding and tough economic and environmental conditions. To achieve this, it is necessary to understand the complex multiphase flow, heat and mass transfer, and global performance of a BF. In this paper injection of alternative reducing agents via lances in the tubers of blast furnaces is discussed to reduce the consumption of metallurgical coke. Besides liquid hydrocarbons and pulverized coal the injection of recycled waste plastics is possible, offering the opportunity to chemically reuse waste material and also utilize the energy contained in such remnants.


Author(s):  
D. Gowrishankar ◽  
G.D. Kumar ◽  
R. Prithviraj ◽  
V. Sanjay ◽  
D. Hariharan ◽  
...  

Plastics are an integral part of our lives and the production of plastics has drastically increased over the years, because of its vast range of applications and usage. Due to this the accumulation of waste plastics has also increased in time. The waste plastic generated in India is 15000 tons per day (as per survey). The breakdown of plastics requires around 500 years in the earth and these waste plastics affect the humans, animals, birds, earth and environment. The demand for conventional fuel has also increased lately and the quantity of this fuel reserve has decreased simultaneously. The extensive usage of the conventional fuels has paved the path for alternative ways for energy sources and alternate fuels. The extraction of waste plastic oil is obtained by the process of pyrolysis which is nothing but the thermochemical decomposition of organic matter without oxygen. The extracted plastic pyrolysis oil is then blended with diesel which helps in reducing the consumption of diesel fuel. Different blend ratios are prepared consisting of the extracted waste plastic pyrolysis oil and diesel fuel. These fuels are tested in the engine to understand the variation in the engine performance and emissions with the help of a gas analyser. By this way, the suitable blend ratio is selected for further works. This blend of fuel can exhibit high thermal efficiency and increases machine efficiency. The fuel does not emit sulphur dioxide (SO2) and the residue obtained is only 5 percent which is said to be carbon.


2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Airong Xu ◽  
Yongxin Wang ◽  
Xingmin Xu ◽  
Zhihong Xiao ◽  
Rukuan Liu

With the widespread use and increasing consumption of PET, the amount of waste PET is growing rapidly, and the accompanied environmental problems will become more and more serious. Therefore, the recycling and reuse of PET are of great significance for not only saving resources but also solving environmental issues. In this study, Methylcellulose (MC) composites reinforced with waste plastics polyethylene terephthalate (PET) were prepared by casting an MC/PET solution with a varying mass ratio of MC to PET. Systematic investigations were performed to reveal the effect of the MC/PET mass ratio on the mechanical property, chemical structure, and thermal properties. The resultant findings indicate that the addition of 3% waste plastics PET to MC could notably enhance the tensile strength by about 24% as compared with neat MC. Interestingly, the elongation of the MC/PET composite kept increasing with increasing waste plastics PET. At the same time, thermal compression treatment could also enhance the mechanical properties of the composite. Moreover, the composites also displayed higher thermal stability than MC. In addition, the crystallinity and morphology of the composite were estimated by XRD and SEM.


2001 ◽  
Vol 2001.11 (0) ◽  
pp. 172-174
Author(s):  
Kaoru SOYAMA ◽  
Takeshi YAMAGUCHI ◽  
Tadayuki HIGASHI ◽  
Hirotoshi KONDO

2002 ◽  
Vol 2002.42 (0) ◽  
pp. 100-101
Author(s):  
Toshiki HASEBE ◽  
Shigeru TOSAKA ◽  
Yasuhiro FUJIWARA ◽  
Yoshinori TOMITA ◽  
Isao KUNITA

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