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七十年代以来,国外多数矿物原料需求量都有不同程度的增长,特别是非金属矿物原料中的建筑材料,其矿产产值的增长速度和产量都是急剧上升的。作为建筑材料的白水泥(矿产原料为灰岩)主要用于建筑装饰。在加入各种颜料后可配制成装饰高级建筑物的彩色灰浆或各种彩色混凝土。白水泥与普通水泥,均以灰岩为主要原料,但价格上白水泥要高于普通水泥的2-3倍。目前需求量大于产量,故找寻白水泥灰岩原科基地,是提高白水泥生产的关键。焙烧白水泥的灰岩,要求钙高、铁低,主要质量指标CaO 为52-54%、Fe_2O_3为0. 1-0. 45%。
Since the 1970s, most of the foreign mineral raw material demand has increased to varying degrees, especially in the construction materials of non-metallic mineral raw materials, and the growth rate and output of the mineral output value have risen sharply. White cement as a building material (mineral raw material is limestone) is mainly used for architectural decoration. After adding various kinds of pigments, it can be formulated into colored mortar or colored concrete of decorative high buildings. White cement and ordinary cement are mainly made of limestone, but the price of white cement is 2-3 times higher than that of ordinary cement. At present, the demand is greater than the output, so finding the white cement limestone base is the key to improving the production of white cement. 5%。 Calcined white cement limestone, requiring high calcium, low iron, the main quality indicators CaO is 52-54%, Fe_2O_3 is 0. 1-0. 45%.