粘土质原料是水泥的主要配料,主要利用其二氧化硅(SiO_2),三氧化二铝(Al_2O_3)和少量的三氧化二铁(Fe_2O_3)。天然粘土质原料有黄土、粘土以及砂页岩、粉砂质泥岩、粉砂岩、泥岩等(以下简称粘土岩)。立窑生产水泥,生料须先成球。因粘土的塑性比较好,颗粒比较细,容易成球,有利于煅烧。所以最常用的是黄土、粘土。 (一)粘土矿规模及矿石质量特征我省粘土分布虽广,但在质量、数量以及开采技术条件都能满足建矿要求的矿山却不多,不是与农业争地,就是储量分散,规模小,或者矿石质量不稳定,开采技术条件差。 Clay raw materials are the main ingredients of cement, mainly using its silicon dioxide (SiO 2), aluminum oxide (Al 2 O 3) and a small amount of ferric oxide (Fe 2 O 3). Natural clay materials are loess, clay and sand shale, silty mudstone, siltstone, mudstone (hereinafter referred to as clay rock). Shaft kiln production of cement, raw materials to be first ball. Due to the plasticity of clay is better, the particles are thin, easy to ball, is conducive to calcination. So the most commonly used is loess, clay. (I) Clay Scale and Ore Quality Characteristics Although the clay distribution in our province is wide, there are not many mines that can meet the requirements of the construction quality in terms of quality, quantity and mining technology. They do not compete with agriculture and are scattered reserves and small scale , Or unstable ore quality, poor mining technology.