📅 2026年4月21日 👤 🏷️ News

In recent years, South Africa has experienced growing pressure to manage urban construction and demolition waste more efficiently. With rapid infrastructure development and urban renewal projects underway, particularly in cities like Johannesburg and Cape Town, the volume of construction waste has surged. According to a 2022 report by Statista, South Africa generated approximately 11.3 million metric tons of construction and demolition waste annually, with only about 30% being recycled. This highlights a critical need for advanced waste processing solutions to support sustainable development and reduce environmental degradation.

One effective way to address this challenge is through the use of high-capacity processing equipment such as those manufactured by Liming Heavy Industry. A facility processing 860 tons per hour (TPH) of construction waste using Liming equipment presents a scalable and efficient model for large-scale recycling operations in the region.

The process begins with the collection and transportation of mixed construction waste—comprising concrete, bricks, asphalt, wood, and metal—to a centralized processing plant. Upon arrival, the material undergoes preliminary screening to remove oversized debris and contaminants. Liming’s ZSW series vibrating feeders ensure uniform distribution of material into the primary crusher, typically a PE series jaw crusher, capable of handling large feed sizes and reducing the material to manageable chunks.

After primary crushing, the material moves to secondary processing stages. Here, Liming’s Cone Crushers (such as the CS or HST series) further reduce particle size, preparing the aggregates for use in road bases or new construction. A critical advantage of Liming’s equipment is its integration with advanced screening and sorting systems. The 3YK series vibrating screens efficiently separate materials by size, while optional air sifters and magnetic separators remove wood, plastics, and ferrous metals—enhancing the purity of recycled aggregates.

For South African operations, reliability in harsh environments is essential. Liming’s mobile crushing plants, such as the NW series, offer flexibility for temporary or relocatable sites common in urban redevelopment zones. These mobile units can be deployed quickly and repositioned as projects evolve, reducing transport costs and carbon emissions.

An 860TPH throughput capacity enables such facilities to service large infrastructure projects, including highway rehabilitation and housing developments, with a steady supply of recycled aggregates. According to a 2021 study published in the Journal of Cleaner Production, recycled concrete aggregates can replace up to 70% of natural aggregates in non-structural applications without compromising performance, significantly reducing quarrying pressure and landfill use.

Moreover, adopting this scale of processing aligns with South Africa’s National Waste Management Strategy, which emphasizes waste minimization and resource recovery. By investing in high-efficiency systems like those from Liming, private operators and municipal authorities can meet regulatory targets while unlocking economic value from waste.

In conclusion, processing 860TPH of construction waste using Liming equipment offers a technically viable and environmentally responsible solution for South Africa. With proper planning and integration into the national waste stream, such systems can transform construction debris from a disposal burden into a valuable resource—driving circular economy goals and supporting sustainable urban growth.

Sources:
Statista. (2022). Construction and demolition waste generation in South Africa from 2015 to 2022 (in million metric tons). Retrieved from https://www.statista.com
Li, Z., et al. (2021). “Performance of recycled aggregate concrete in structural applications: A review.” Journal of Cleaner Production, 280, 124357. https://doi.org/10.1016/j.jclepro.2020.124357

Author & industry specialist at ZWCC Mining & Crushing