Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention discloses a sludge balling process. The sludge balling process comprises the following steps: 1) pretreating sludge until the water content is within 70%; screening and drying the fly ash subjected to high-temperature decarburization treatment, fully mixing the fly ash with a silane coupling agent and a solvent, and drying to obtain modified fly ash; pretreating clay until the moisture content is within 15% and the particle size is 2-5mm; 2) mixing 100 parts by mass of sludge, 18-25 parts by mass of modified fly ash and 50-60 parts by mass of clay in a stirrer, and fully mixing to obtain a mixture; (3) preparing the mixture into raw material balls with the particle size of 10-30mm, and aging the raw material balls in a shady and ventilated place for more than 24 hours; and 4) sintering the raw material balls in a rotary kiln to obtain the ceramsite. Sludge, clay and fly ash waste are consumed, secondary pollution is reduced, the raw material cost of ceramsite manufacturing is reduced, and certain economic benefits are achieved.
本申请公开了一种污泥成球工艺，包括以下步骤：1)将污泥预处理至含水率70％以内；将高温脱碳处理后的粉煤灰进行筛分，干燥处理，然后与硅烷偶联剂、溶剂进行充分混合后再干燥处理得到改性粉煤灰；将黏土预处理至含水率15％以内，粒径为2～5mm；2)将污泥、改性粉煤灰，以及黏土，按照污泥100份、改性粉煤灰18～25份、黏土50～60份的质量份数配比，置于搅拌机中充分混合，得到混合料；3)将混合料制成粒径为10～30mm的生料球后，放置于阴凉通风处陈化24h以上；4)将生料球置于回转窑中经烧结得到陶粒。本申请消耗了污泥、黏土及粉煤灰废弃物，减少了二次污染，降低了陶粒制造的原料成本，具有一定的经济效益。
The invention discloses a sludge balling process. The sludge balling process comprises the following steps: 1) pretreating sludge until the water content is within 70%; screening and drying the fly ash subjected to high-temperature decarburization treatment, fully mixing the fly ash with a silane coupling agent and a solvent, and drying to obtain modified fly ash; pretreating clay until the moisture content is within 15% and the particle size is 2-5mm; 2) mixing 100 parts by mass of sludge, 18-25 parts by mass of modified fly ash and 50-60 parts by mass of clay in a stirrer, and fully mixing to obtain a mixture; (3) preparing the mixture into raw material balls with the particle size of 10-30mm, and aging the raw material balls in a shady and ventilated place for more than 24 hours; and 4) sintering the raw material balls in a rotary kiln to obtain the ceramsite. Sludge, clay and fly ash waste are consumed, secondary pollution is reduced, the raw material cost of ceramsite manufacturing is reduced, and certain economic benefits are achieved.
本申请公开了一种污泥成球工艺，包括以下步骤：1)将污泥预处理至含水率70％以内；将高温脱碳处理后的粉煤灰进行筛分，干燥处理，然后与硅烷偶联剂、溶剂进行充分混合后再干燥处理得到改性粉煤灰；将黏土预处理至含水率15％以内，粒径为2～5mm；2)将污泥、改性粉煤灰，以及黏土，按照污泥100份、改性粉煤灰18～25份、黏土50～60份的质量份数配比，置于搅拌机中充分混合，得到混合料；3)将混合料制成粒径为10～30mm的生料球后，放置于阴凉通风处陈化24h以上；4)将生料球置于回转窑中经烧结得到陶粒。本申请消耗了污泥、黏土及粉煤灰废弃物，减少了二次污染，降低了陶粒制造的原料成本，具有一定的经济效益。