Displaying items by tag: industrial waste

Oman: Raysut Cement Company has launched a programme to recycle industrial byproducts for use as alternative fuel in cement production and electricity generation, to align with Oman's goal of net zero emissions by 2050.

Hilal bin Saif Al-Dhamri, Acting CEO of Raysut Cement, said "We use secondary industrial materials resulting from production processes across various industries. These are recycled in cement manufacturing and are categorised into two types: one that can be reused as an alternative fuel in plants, the other is used as a partial replacement to the main raw materials leveraged for cement production.” He added "We implemented a project to reuse exhaust heat and convert it to electrical energy at the Raysut Cement plant in Salalah. This innovative approach permits the plant to generate approximately 30% of its electrical energy, by reducing around 50,000t/yr of CO₂. As a result, the Salalah Raysut Cement plant stands out as environmentally friendly, distinguished by its capability to provide clean energy for cement production."

Al-Dhamri also noted that the company was able to enhance the efficiency of its Salalah plant through this programme, by reducing the clinker content while improving the performance of cement in concrete. This has reportedly contributed to a CO₂ emissions reduction of around 18% compared to ordinary cement.

Mexico: Geocycle Mexico aims to process 1Mt of industrial and urban waste into alternative fuel (AF) for use in Holcim Mexico's cement plants in 2023. The El Economista newspaper has reported that the company processed 600,000t-worth of waste in 2022. Geocycle Mexico says that it has helped to raise Holcim Mexico's AF substitution rate to 25%.

The supplier said "Latin America is the region that recycles the least in the world. According to the World Bank, less than 5% of the real capacity we have is recovered. That is why, for 30 years, we have sought to solve this problem by integrating waste into Holcim's production process."

Mexico: Cemex has launched its global waste management subsidiary Regenera. Regenera will be involved in the reception, management, recycling and coprocessing three major waste streams: municipal and industrial waste, construction, demolition and excavation waste (CDEW) and industrial by-products. It will tie in with Cemex’s own cement sustainability initiatives, for instance in its supply of waste recovered from the River Nile to Cemex Egypt’s Assiut cement plant for co-processing as alternative fuel (AF).

Vietnam: Vicem But Son Cement has reported that it now substitutes between 20% and 30% of its fuel with alternative fuel (AF). Viet Nam News has reported that company says that it eliminated 133,000t of CO₂ emissions through AF co-processing in 2021. It has used sewage sludge and industrial waste as sources of AF since September 2019.

Brazil: BNDES, the national development bank, has approved a US$7.4m loan for Votorantim Cimentos to co-process alternative fuels. The funds will be used to adapt the company's industrial units to process industrial waste, tyres and biomass, according to the O Estado de Sao Paulo newspaper. The cement producer is preparing to spend US$13.6m towards modifying its plants at Salto de Pirapora in Sao Paulo and Edealina in Goias.

China: Dongwu Cement has struck an agreement with Suzhou Dongfang Jiujiu Industry to start a waste disposal company to supply alternative fuels for its kiln. The cement producer based in Wujiang City, Suzhou Prefecture and its partner will invest US$7.3m in the joint venture to start with, according to the ET Net News Agency. Dongwu Cement will own a 52% share in the company.

It will co-process urban sludge, organic waste and industrial solid waste. It will also collect, store and dispose of soil for soil remediation. It is expected the company will dispose of 50,000t/yr of industrial solid waste.

Dongwu Cement operates a 0.75Mt/yr cement plant with two grinding mills, giving it a cement production capacity of 1.64Mt/yr. It manufactures 42.5 and 32.5 class Ordinary Portland Cement.

China: FLSmidth, Sino Environment Engineering Development (SEPTEC) and China Resources Cement (CRC) have signed a partnership to provide pyroprocessing co-processing systems to cement plants. FLSmidth will be responsible for the design, engineering and integration of the integrated waste burning solution, with SEPETC acting as a general contractor.

The agreement follows a project at CRC's Hongshuihe cement plant that took municipal and industrial waste from the city of Binyang in Guangxi. FLSmidth installed a Hotdisc system that could process 300t/day of waste to support the cement plant’s cement production capacity of 3200t/day.

"China's energy intensive industries, such as cement production, are coming under pressure from the government that wants to rebalance the economy towards a less energy-hungry mode of growth, curb pollution and reduce carbon emissions. CRC plans to initiate several similar municipal solid waste co-processing projects for other cement producers with FLSmidth and SEPETC as partners," said FLSmidth China Country Manager, Cyril Leung.

In China's latest five-year plan, the government encourages more cement producers to co-process municipal solid waste in the cement industry, with an aim of getting 15 - 20% of the cement kilns in the country to be co-processing waste by 2020. In 2017, China will introduce a national carbon-trading scheme in 2017.