齐齐哈尔造纸有限公司自备电厂于１９９４年，建成一条浮选脱灰生产线，生产出符合国标二级的粉煤灰。尔后，在实际生产中，为提高产品质量，降低成本，又对原生产工艺做了一些改动。改动后的工艺，在保证产品质量的前提下，成本大幅度降低，所用设备比原工艺节约了７台，电 Qiqihar Paper Co., Ltd. owned power plant in 1994, built a flotation ash production line to produce two in line with the national standard fly ash . Later, in the actual production, in order to improve product quality, reduce costs, but also made some changes to the original production process. After the change of technology, under the premise of guaranteeing product quality, the cost is greatly reduced, the equipment used has saved 7 sets of power than the original technology