石家庄矿产品技术开发部研制成功的SD-1型、SD-4型活性功能矿物填料,是以煤矸石为原料,采用科学的工艺加工而成。其工艺流程是:(1)原料的粉碎。煤矸石粉碎前应除去大量煤屑,此步骤也可在粗碎后筛分。细碎可用雷蒙磨机加工至—325目。(2)焙烧。其目的是将煤矸石中的有机炭、硫、水分(H_2O~-、H_2O~+)等除去,以增强其活性和提高白度。不过必须严格控制焙烧温度,过低或过高均为不利,温度过低焙烧不完全;过高将会导致高岭石内部结构破坏,活性降低。(3)矿物改拄。煤矸石主要矿物成分 Shijiazhuang Mineral Technology Development Department successfully developed SD-1, SD-4 type active functional mineral filler, coal gangue as raw material, the use of scientific technology from processing. The process is: (1) grinding of raw materials. Coal gangue should be removed before crushing large amounts of coal, this step can also be crushed after crushing. Fine grinding available Raymond mill processing to -325 mesh. (2) roasting. Its purpose is to remove the organic carbon, sulfur, moisture (H_2O ~ -, H_2O ~ +) in coal gangue to enhance its activity and improve the whiteness. However, it is necessary to strictly control the calcination temperature, too low or too high are unfavorable, the temperature is too low calcination is not complete; too high will lead to the destruction of the internal structure of kaolinite, activity decreased. (3) mineral change Zhu. Coal gangue main mineral composition