水泥生产一直被认为是导致气候变化的元凶之一。据测算,生产这种工业原料的过程及使用的化石燃料排放的温室气体约占全球总量的5%。然而根据一项新的研究,这种现代文明的“积木”可能最终会吸收一部分二氧化碳气体——足以抵消近1/4的生产水泥所排放的温室气体。为了生产水泥,石灰石(碳酸钙)通过高温烘焙至1 000℃被转化成石灰(氧化钙)。这一转化过程向大气中释 Cement production has long been considered one of the culprits in climate change. It is estimated that greenhouse gas emissions from the production of such industrial raw materials and the use of fossil fuels account for about 5% of the global total. However, according to a new study, this modern civilization’s “building block” may eventually absorb part of the carbon dioxide gas - enough to offset nearly a quarter of the greenhouse gas emissions from production cement. For the production of cement, limestone (calcium carbonate) is converted to lime (calcium oxide) by baking at elevated temperatures to 1 000 ° C. This conversion process is released into the atmosphere