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News Ash

Displaying items by tag: Ash

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New Dasherkandi sewage works to produce ash for cement plants

14 July 2023

Bangladesh: The government inaugurated the Dasherkandi sewage works, the largest sewage treatment plant in South Asia, in Dhaka on 13 July 2023. United News of Bangladesh has reported that the plant will incinerate dried sewage sludge to produce 16,400t/yr of ash. The plant will supply this to the local cement industry for use as a raw material.

The Dasherkandi sewage works is one of five planned new sewage plants expected to process 100% of Dhaka's sewage by 2030.

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Golden Bay Cement secures bottom ash supply

09 May 2023

New Zealand: Golden Bay Cement has signed a deal with Genesis Energy for a supply of bottom ash from Huntly power plant for use in cement production at its Portland cement plant in Northland. Genesis Energy generates 20,000t/yr of bottom ash at the Huntly plant, situated in Waikato, 260km south of the Portland cement plant. The plant currently uses 15,000t/yr of fly ash from the Huntly power plant in its operations. The producer was previously investigating the use of volcanic ash in cement production in 2022. It currently uses waste tyres and wood waste as alternative fuels (AF) to produce its EcoSure low-carbon general-purpose cement.

Golden Bay Cement's general manager Gian Raffainer said "We are driven to decarbonise and achieve 30% less carbon by 2030. Contributing to waste reduction at a large scale for the benefit of all New Zealanders is incredibly exciting. It is a win-win for the environment and for Kiwis who want to use more environmentally friendly products."

Published in Global Cement News
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EU Carbiow project to develop new biofuel with CO2 captured from cement production

15 November 2022

Europe: The Carbon Negative Biofuels from Organic Waste (Carbiow) project has received EU funding under the Horizon Europe initiative. Carbiow seeks to develop a dense, dry homogenous marine and aviation biofuel by carbonising gasification ash with oxygen and captured CO2 from cement plants. 12 consortium members from the Benelux, Germany, Nordic countries, Slovenia and Spain are participating in the project.

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SK Ecoplant aims to process Seoul's ash and sludge into 150,000t/yr of cement

19 October 2022

South Korea: SK Ecoplant is at the centre of an initiative in partnership with the city administration of Seoul to co-process 52,000t/yr of incineration ash and 110,000t/yr of sewage sludge from the city in local cement production. AJU News has reported that the waste management company expects to supply the raw materials to make 150,000t/yr of cement production under the initiative.

Seoul generates 113,000t/yr of incineration ash and 200,000t/yr of sewage sludge. Currently, recycled incineration ash is used in concrete block and paving slab production, which have a limited strength when using the material.

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SK Ecoplant and CMD Group to deliver ash-based building materials

14 July 2022

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.

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Aggregate Industries partners with Coomtech for ash drying

12 July 2022

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.”

Published in Global Cement News
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Eco Material Technologies secures Georgia Power ash mining contract

30 June 2022

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."

Published in Global Cement News
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Holcim France produces 100% recycled clinker

21 June 2022

France: 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.

Published in Global Cement News
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Vicem Hoàng Mai Cement targets US$79.2m in sales in 2022

07 April 2022

Vietnam: 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.

Published in Global Cement News
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Conch North Sulawesi Cement uses 50t/day of fly ash and bottom ash in its cement production

23 March 2022

Indonesia: 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.

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