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METHOD OF MANUFACTURING OF LIGHT CERAMIC PROPPANTS AND LIGHT CERAMIC PROPPANTS
METHOD OF MANUFACTURING OF LIGHT CERAMIC PROPPANTS AND LIGHT CERAMIC PROPPANTS
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机译:轻质陶瓷支撑剂的制造方法及轻质陶瓷支撑剂
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摘要
A method for manufacturing of light ceramic proppants made from a mixture of raw materials that is mechanically granulated in a granulator or that is granulated in a spray dryer from a pourable ceramc mass, to obtain granulate having a granule size of 150-1700 μm (12-100 U.S. Mesh, ASTM E11-04, ISO 13503-2), and next the granulate is fired and the fired granulate is fractioned. The mixture of raw materials is prepared from: illite-beidellite-ka-olinite high-plastic clays of the Poznan series in the amount of 10% to 40% by weight; kaolinite clays in the amount of 10% to 45% by weight; kaolin in the amount of 20% to 40% by weight; fly ash from brown coal combusted in a power plant in the amount of 10% to 35% by weight; and treatment agents in the amount of up to 10% by weight. The mixture of raw materials is mixed and homogenized in a homogenizer, and the obtained granulate is fed to a fluidised bed dryer, in which it is dried to a moisture content below 3%, and the granulate is fired in a rotary furnace in a temperature from 1150° C. up to 1410° C. in time from 120 to 600 min, obtaining proppants which contain from 18% to 32% by weight of Al203, from 40% to 76% by weight of SiO2, and have a specific gravity from 2.15 Mg/m3 to 2.90 Mg/m3 and a bulk density from 1.35 Mg/m3 to 1.70 Mg/m3, depending on the firing time.
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机译:一种用于制造轻质陶瓷支撑剂的方法,该支撑剂由可倾倒的陶瓷物料在制粒机中机械制粒或在喷雾干燥机中制粒的原料混合物制得,粒度为150-1700μm(12 -100 US Mesh,ASTM E11-04,ISO 13503-2),然后将颗粒焙烧,并将焙烧的颗粒分级。原料的混合物是由以下物质制备的:波兹南系列的伊利石-贝得石-钾-橄榄石高塑性粘土,其含量为10%至40%(重量);高岭石粘土的量为10重量%至45重量%;高岭土的量为20%至40%(重量);在电厂中燃烧的褐煤中的粉煤灰,按重量计为10%至35%;和处理剂的量按重量计可达10%。将原料混合物在均质器中混合并均质化,然后将获得的颗粒进料至流化床干燥器中,在其中干燥至水分含量低于3%,然后将颗粒在旋转炉中于一定温度下煅烧在120至600分钟的时间内从1150℃至1410℃,获得包含18重量%至32重量%的Al 2 O 3,40重量%至76重量%的SiO 2的支撑剂。 Sub>,比重为2.15 Mg / m 3 Sup>至2.90 Mg / m 3 Sup>,堆积密度为1.35 Mg / m 3 Sup >至1.70 Mg / m 3 Sup>,具体取决于烧结时间。
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