Displaying items by tag: Ash
South Korea: SK Group subsidiary SK Ecoplant has partnered with CMD Group to launch pilot production of building materials made using up to 60% recycled bottom ash from waste incinerators. The partners say that an exothermic reaction in the presence of non-sintered inorganic binders and expansion-reducing reactants increases the compressive strength of the end product to match that of concrete containing ordinary Portland cement (OPC).
AJU News has reported that South Korean waste incinerators produced 2.16Mt of bottom ash from 9.12Mt of waste in 2020.
UK: Aggregate Industries and Coomtech have partnered to develop low-energy kinetic drying technology for pulverised fuel ash (PFA) from power plant. The partnership will see Aggregate Industries use Coomtech’s kinetic dryers in its PFA processing, as part of its effort towards increasing the volume of waste materials incorporated in its products to 3Mt/yr from 1.5Mt/yr by 2025. The project has attracted funding from the UK government Department of Business, Energy and Industrial Strategy (BEIS).
Chief commercial officer Chris Every said “We’re delighted to have the support of Aggregate Industries in this grant project. Coomtech is especially pleased to have the business’ ongoing technical and commercial input to the project operation and analysis of performance. In addition, the opportunity to work together with a brand that is leading the way in creating new materials that will prove fundamental to the future of the construction sector and meet net zero objectives.” Every continued “The added benefit of our new drying technology is its flexibility - providing the potential to dry a wide range of materials being considered to aid the greening of the cement industry, including limestone, ground blast furnace slag (GBFS), natural pozzolans and other crushed and milled minerals that can offer an activated character to combine in cement and concrete mixes.”
US: Eco Material Technologies has won a contract with Georgia Power to mine 600,000t/yr from the energy company’s Plant Bowen ash dump in Cartersville, Georgia. Eco Material Technologies will use the ash to produce its 99% reduced-CO2 building materials, including an alternative cement with 20% greater compressive strength than ordinary Portland cement (OPC) after 28 days, according to the company.
Grant Quasha, CEO of Eco Material Technologies, said "As the largest partnership of its kind in the US, this project will not only use material from landfills and ash ponds, but also keep millions of tonnes of CO2 from going into the atmosphere."
Holcim France produces 100% recycled clinker
21 June 2022France: Holcim France has announced its successful industrial-scale production of the world's first 100% recycled clinker. The La Tribune newspaper has reported that the company's Altkirch, Alsace, cement plant produced the clinker. Holcim France chief executive officer Francois Petry said that the plant's team collaborated with researchers at the Holcim Innovation Center to develop a recipe that incorporated multiple waste streams, including mineral wastes and wood ash. The producer says that most of the waste materials were locally sourced.
Vicem Hoàng Mai Cement targets US$79.2m in sales in 2022
07 April 2022Vietnam: Vicem Hoàng Mai Cement has announced a full-year sales target of US$79.2m for 2022, down by 1.5% year-on-year from 2021 levels. Its target net profit for the year is US$656,000, more than five times its 2020 figure. The company forecasts cement production of 1.73Mt, up by 11% from 1.56Mt, and clinker production of 1.4Mt, down by 4.1% from 1.46Mt, for the year. It plans to replace 30 – 40% of the natural gypsum currently used in cement production with synthetic gypsum. It will also increase the proportion of ash and slag in its raw materials mix.
The Chúng Khoán newspaper has reported that Vicem Hoàng Mai Cement said that it is experiencing increased costs due to high raw materials and fossil fuel prices. A coal shortage has also disrupted production.
Conch North Sulawesi Cement uses 50t/day of fly ash and bottom ash in its cement production
23 March 2022Indonesia: Conch North Sulawesi Cement is receiving 50t/day of fly and bottom ash from the Amurang coal-fired power plant in North Sulawesi. Koran Metro News has reported that the Semen Conch subsidiary uses the ash as a supplementary cementitious material (SCM) in its cement production. The Amurang power plant currently holds 80,000t of the byproduct in stockpiles.
Eco Material Technologies acquires Green Cement
15 February 2022US: Eco Material Technologies has successfully completed its acquisition of near-zero carbon cement alternatives producer Green Cement. Eco Material Technologies previously agreed to acquire Boral’s US fly ash business in December 2021, a transaction which it expects to conclude in 2022.
Innovative Ash Solutions to establish 20,000t/yr ash processing plant in South Lanarkshire
02 December 2021UK: Innovative Ash Solutions has received a Euro588m Scottish government grant to establish a 20,000t/yr ash processing plant in South Lanarkshire. The Herald newpaper has reported that the plant will process boiler ash, cyclone ash and incineration fly ash for use in local cement production. When commissioned in 2022, the plant will eliminate 6104t/yr of CO2 emissions, according to the operator. The government granted the funding under its Zero Waste Scotland circular economic investment scheme.
The company said “Using this new patented process, which diverts waste materials from landfill and avoids the use of virgin sand, creates a product which is cheaper and will reduce the environmental impact of cement production compared to the use of imported pulverised fuel ash.”
Innovative Ash Solutions is a joint venture of waste management company Levenseat and consultancy Organic Innovative Solutions.
Charah Solutions wins ash and boiler slag handling contract with Associated Electric Cooperative
04 November 2021US: Charah Solutions has signed a contract with Associated Electric Cooperative (AECI) to receive bottom ash, fly ash and boiler slag from its Thomas Hill Energy Center coal-fired power plant in Missouri until 2026. Charah Solutions will recycle the by-products to produce supplementary cementitious products and redistribute these through its MultiSource materials network. The network consists of 40 locations across the US.
President and CEO Scott Sewell said "We are delighted to partner with AECI to manage their ash marketing needs at Thomas Hill while supplying our concrete producers with the high-quality material they need."
Germany: Scientists at the University of Kassel in Hessen have launched a study into the use of ash from waste incinerators in precast concrete production. The Hessische Allgemeine newspaper has reported that a waste-to-energy plant in Kassel will provide the ash for concrete production in partnership with local companies Kimm Baustoffe and Gebäudeke Baustoff-Recycling. The study aims to produce pre-cast concrete elements containing at least 30% ash, beginning with paving slabs and noise barriers.
Project leader David Laner said that ash has the potential to help lower concrete’s carbon footprint. He said “So far, it has been put to lesser-value uses; we make a product out of it - upcycling instead of downcycling.”