如何制造水泥 - 波特兰水泥协会
水泥非常细，一磅水泥含有1500亿粒。水泥现在可以运输到预拌混凝土公司，用于各种建设项目。虽然干法是最现代和最流行的水泥制造方法，但美国的一些窑炉使用湿法。水泥制造过程-Advancing Mining,Aug 20, 2015· Cement manufacturing is a complex process that begins with mining and then grinding raw materials that include limestone and clay, to a fine powder, called raw meal, which is then heated to a sintering temperature as high as 1450 °C in a cement kiln. In this process, the chemical bonds of the raw materials are broken down and then they are,Cement - Extraction and processing | Britannica,Cement - Cement - Extraction and processing: Raw materials employed in the manufacture of cement are extracted by quarrying in the case of hard rocks such as limestones, slates, and some shales, with the aid of blasting when necessary. Some deposits are mined by underground methods. Softer rocks such as chalk and clay can be dug directly by excavators.