Ecofriendly bricks elaborated from coal waste of Moroccan Jerrada Mining

Abstract

Solid waste generated during mining is one of the major environmental problems associated with this industrial activity. The best solution to overcome the environmental impact of this waste is to find recycling facilities in mass-produced products that can absorb the large quantities of these available byproducts. The present study shows the feasibility of using the coal waste of Moroccan Jerrada mining in the production of ecological brick. The first step consists of consecutive stages of crushing, grinding and heating at 650°C of the coal waste with a small amount of lime in order to promote the reactive products of elaborated binders. The second step of the process consists of mixing treated coal waste with a small amount of marble dust, sand, gravel, and water, then pressed and dried at room temperature to manufacture a laboratory ecofriendly bricks. The mechanical strength and thermal conductivity are investigated.

Recovery of mining and agri-food wastes in fired materials: A case study of the Moroccan industry

“…This research demonstrates how decarbonizing coal gangue through otation can enhance brick mechanical strength while reducing greenhouse gas emissions. On a related point, the production of eco-friendly bricks by combining marble dust with coal gangue processed at 650°C presented a remarkable mechanical strength and thermal insulation (Ez-zaki et al, 2018). Furthermore, another paper investigated the feasibility of incorporating coal gangue (10,20,30,40, and 50 wt.%) in the production of clay bricks.…”