Phosphorus-gypsum is a by-product of phosphoric acid and some Compound Washing product industry . Powdered coal ash is a kind of powder which collected from waste gases of coal ash boiler .
磷石膏是磷酸工业和某些合成洗涤产品工业的副产品，粉煤灰是在煤灰锅炉废气中收集下来的粉末。
2
They are widely used for the accessory elements of refrigerator sets, central air-conditioning, hot pump sets, compressor sets, washing machine, boiler and other machinery.
作为配套产品，广泛应用于制冷机组、中央空调、热泵机组、压缩机组、洗涤设备、水处理设备等诸多设备中。
3
The black flue from boiler was analyzed. The method of removing flue dust in which washing powder is filled into wet dust remover is introduced.