Casing method of dredging sediment non-sintered ceramsites

Abstract

The invention relates to a casing method of dredging sediment non-sintered ceramsites, comprising following steps: (1) crushing cement, quicklime, glass fibre powder, and fly ash by using a crusher; (2) mixing the pretreated cement, quicklime, glass fibre powder, and fly ash to make dry mixed casing material, weighing dredging sediment non-sintered ceramsites, wherein the mass ratio is : 10-20 parts of cement, 1-10 parts of quicklime, 1-10 parts of glass fiber powder, 1-10 parts of fly ash, and 50-70 parts of dredging sediment non-sintered ceramsites; (3) adopting a disc shot blasting machine for polishing casing; (4) maintaining for prepared non-sintered casing ceramsites. The casing method can consume a large amount of dredging sediment and meets the requirement for resource utilization of dredging industry, and largely promotes intensity of the dredging sediment non-sintered ceramsites, furthermore the production energy consumption is low, the non-sintered casing ceramsites have a wide application range and meet the requirements of construction markets.

Description

technical field [0001] The invention belongs to the technical field of dredging industry and building materials, in particular to a shell coating method of unfired ceramsite for dredging bottom mud. Background technique [0002] Dredged sediment is produced by the treatment of water body sediment through dredging engineering. In recent years, due to the rapid development of my country's dredging industry, a large amount of dredged sediment is produced every year. However, due to the performance degradation of dredged sediment, its resource utilization is restricted. At present, the process of preparing ceramsite from dredged sediment at home and abroad is mainly the sintering method. The sintering method is that the dredged bottom mud is firstly subjected to sand removal treatment, then aged evenly, and then mixed with other raw materials, powdered into balls into balls, and then fired to shape after drying. Although the sintering method can make the ceramsite ball dense ...

AI Technical Summary

Problems solved by technology

Although the sintering method can make the ceramsite ball dense and improve the strength of the ceramsite, but firing requires a lot of energy, which is not good for cost control

[0003] The non-burning method is to cover and wrap the dredged bottom mud and cementitious materials on the droplets to form a ball through centrifugal action, and the formed ball passes through continuous rolling, and the surface is polished to form ceramsite (such as the patent publication "A Kind of Adding Dredging The method for preparing unfired ceramsite from bottom mud" (patent application number is 201510374608.5) disclosed), the prepared unfired ceramsite has excellent water resistance, but compared with sintered ceramsite, its strength is still insufficient, so for round The defect that the unfired ceramsite of the dredged bottom mud obtained by pan granulation is insufficient in strength, this patent application discloses a method for wrapping the unfired ceramsite of the dredged bottom mud, which increases the strength of the ceramsite and broadens the scope of the unfired ceramsite for the dredged bottom mud. The scope of application of fired ceramsite

[0004] Through the search, no patent publications related to the patent application of the present invention have been found