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

水泥生产中二氧化碳排放量的较大部分是由于石灰石的煅烧。这一比例可以通过减少熟料-水泥比的过程来减轻，使用补充胶凝材料（SCM），如天然火山灰，高炉矿渣，粉煤灰和石灰石填料。由于火山形成，天然火山灰在一些国家很丰富，但在英国或爱尔兰却没有。随着到2025年强制关闭燃煤发电站，高炉矿渣和粉煤灰变得越来越稀缺。本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天然煅烧火山灰（NCP）形式的人工SCM用于水泥生产的可能性。该项目旨在取代目前用作超临界水泥但在英国供应量减少的粉煤灰和粒化高炉矿渣等副产品，并将研究在现有的标准回转窑中加工该产品的商业可行性，该回转窑以前用于熟料生产。

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.