Study of the feasibility of producing artificial pozzolana at existing cement facility for use as an alternative raw material in Portland Cement

研究在现有水泥设施生产人造火山灰作为波特兰水泥替代原材料的可行性

• 批准号: 91257
• 金额: $ 30.29万
• 依托单位: MANNOK BUILD LIMITED
• 依托单位国家: 英国
• 项目类别: Collaborative R&D
• 财政年份: 2021
• 资助国家: 英国
• 起止时间: 2021 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=91257
• 关键词: Study; feasibility; producing; artificial; pozzolana

The larger share of CO2 emissions in cement production is due to the calcination of limestone. This share can be mitigated through a process that reduces the clinker-cement ratio, using supplementary cementitious materials (SCM) such as natural pozzolans, blast furnace slags, fly ash and limestone filler.Natural pozzolans are plentiful in some countries due to volcanic formation, but not in the UK or Ireland. Blast furnace residue and fly ash are becoming increasingly scarce following the mandatory closure of coal-fired power stations by 2025\.This project will complete an in-depth feasibility study into the possibility of using abundant clay deposits in N.Ireland to produce an artificial SCM in the form of Natural Calcined Pozzolans (NCPs) for use in cement production. This will be aimed at replacing by-products such as Pulverised Fuel Ash (PFA) and Granulated Ground Blastfurnace Slag (GGBS) which are currently used as SCMs but are in decreasing availability in the UK.It will also examine the commercial viability of processing the product in an existing standard rotary kiln used previously for clinker production.

水泥生产中二氧化碳排放的较大份额是由于石灰石的煅烧。这一比例可以通过使用补充胶凝材料（SCM）（如天然火山灰、高炉炉渣、粉煤灰和石灰石填料）降低熟料与水泥的比例来缓解。由于火山的形成，天然火山灰在一些国家很丰富，但在英国和爱尔兰却没有。在2025年之前强制关闭燃煤电厂之后，高炉渣和飞灰变得越来越稀缺。该项目将完成一项深入的可行性研究，探讨利用北爱尔兰丰富的粘土矿床生产用于水泥生产的天然煅烧火山灰（ncp）形式的人工SCM的可能性。这将旨在取代副产品，如粉状燃料灰（PFA）和颗粒状地面高炉渣（GGBS），它们目前被用作SCMs，但在英国的可用性正在减少。它还将审查在以前用于熟料生产的现有标准回转窑中加工该产品的商业可行性。