Potential utilization of LD slag and waste glass in composite production Manila Mallik, Sristy Hembram, Damayanti Swain, Gautam Behera ⇑ Department of Metallurgical and Materials Engineering, Veer Surendra Sai University of Technology, Burla, Odisha 768018, India article info Article history: Received 25 December 2019 Received in revised form 22 February 2020 Accepted 25 February 2020 Available online xxxx Keywords: Waste glass LD slag Theoretical density Actual density Porosity abstract In the present era of material production, the most crucial issue is the generation of waste along with the desired material. In this context, 4R i.e. reduce, reuse, recycle, and recover is the best practice to save our environment from pollution. The production rate of waste glasses and LD (Linz Donawitz) slag is very high. The present work is about the utilization of waste glass and LD slag for the synthesis of a glass- ceramic composite. Composite of different compositions were synthesized by varying the amount of LD slag and waste glass and it was prepared by the powder metallurgy route. The amount of glass in com- posite was maintained like 30, 35, 40, and 50 wt%. Collected slag and glass were crushed with a hammer and the crushed powder was milled in a planetary ball mill for 6 hrs at 200 rpm. Green pellets were pre- pared in a hydraulic press with a pressure of 30 MPa. The sintering was carried out in a double chamber muffle furnace at 1050 °C with a heating rate of 10 °C/min for 2 hrs. Surface characterization of the sin- tered pellets was carried out by an optical microscope and scanning electron microscope (SEM). Pores are visualized from the microstructural analysis. The size of the pores, as well as the fraction of pores, are found to be large in the case of composite that comprises of an equal wt% of slag and glass. The highest density is observed for S60G40 and it is found to be 2.23 gm/cm 3 . Hardness was measured by Vickers hardness tester and the compression strength was evaluated from the compression test by using a uni- versal tensile testing machine (UTM). Both reveal the reverse trend as observed in porosity data. Ó 2020 Elsevier Ltd. All rights reserved. Selection and Peer-review under responsibility of the scientific committee of the 2nd International Conference on Processing and Characterization of Materials. 1. Introduction Nowadays, authorities are more apprehensive about the huge industrial waste. Everybody is marching with a slogan of 4R i.e. ‘‘Reduce, reuse, recycle and recover”. The volume of waste genera- tion is huge and disposing them in a suitable place is highly burden for many of the industrialists. Different techniques have been adopted to utilize those waste as a valuable product. In this con- text, utilizing the wastes for making composite is highly com- mendable [1,2]. Many authors have been reused industrial as well as domestic waste. These wastes include plastics, waste glass, stone dust, blast furnace slag, electric arc furnace dust, and slag, red mud, and fly ash [3–6]. Achukwu et al. have worked on waste bottle glass which was a reinforcement in polyester composite [7]. Waste glasses are also used for the synthesis of porous material which is used as a biomaterial and electronic components [8]. Because, porous material possesses low thermal conductivity, low density, and high surface area [9]. Waste glass is highly endorsed for the partial replacement of cement [10]. Nurhayat et al. have worked on the utilization of waste glass for cement mortar where it replaces sand [11]. Expansion of ASR (alkali silica reaction) which is a measure issue in concrete that has been diminished due to the use of colored waste glass instead of sand. Many authors have worked on waste slag and TV glass for the synthesis of ceramic glass composite. Darko et al. have pro- duced dense and porous composites by taking different composi- tions of BF slag and TV glass at different sintering temperatures [12]. In this work, the various amount (wt%) of domestic container waste glass and LD slag are used to synthesize composite which could be utilized as a porous material for different applications like dust collectors and filters. 2. Experimental Collected waste glass and LD slag were crushed separately with a hammer. The crushed particles were sieved and the particles belong to the aperture size between 0.045 to +0.037 mm were https://doi.org/10.1016/j.matpr.2020.02.881 2214-7853/Ó 2020 Elsevier Ltd. All rights reserved. Selection and Peer-review under responsibility of the scientific committee of the 2nd International Conference on Processing and Characterization of Materials. ⇑ Corresponding author. E-mail address: gautamiitkgpian@gmail.com (G. Behera). Materials Today: Proceedings xxx (xxxx) xxx Contents lists available at ScienceDirect Materials Today: Proceedings journal homepage: www.elsevier.com/locate/matpr Please cite this article as: M. Mallik, S. Hembram, D. Swain et al., Potential utilization of LD slag and waste glass in composite production, Materials Today: Proceedings, https://doi.org/10.1016/j.matpr.2020.02.881