Method for clearing pipelines in manufacturing process of aluminium oxide

Abstract

The invention provides a method for clearing pipelines in the manufacturing process of aluminium oxide, which is applicable to the clearance of scars generated in the pipeline transportation section in the manufacturing process of aluminium oxide, in particular to the method for clearing the scars inside the pipelines. The clearing process is characterized in that the pipeline is full of floating NaOH alkali liquor with the temperature of 93-103 DEG C in the clearing process; the NaOH alkali liquor dissolves the scars in the pipelines and the scars can be cleared by the floating and eroding of the alkali liquor. The wet clearing method of pipelines in the process of manufacturing the aluminium oxide by the sintering method can realize scar decomposition and return to the flow by utilizing the principle that alkali solution with certain temperature, concentration and flow rate can dissolve the scars, thus realizing the recycling of the pipelines for transmitting materials in the manufacturing process of the aluminium oxide and improving production capability and device productivity.

Description

technical field [0001] The invention relates to a method for cleaning pipelines in the alumina production process, which is suitable for cleaning the scabs generated in the transmission part of the alumina production pipelines, and is especially aimed at cleaning the scabs inside the pipelines. Background technique [0002] One of the biggest production bottlenecks in alumina production is the scarring of pipelines in the wet production process, and most of the scarring components are Na 2 O, Al 2 o 3 , SiO 2 And crystallized water, due to scarring, the pipeline transportation capacity is reduced, and the equipment capacity is reduced. In the past, almost all pipeline cleaning methods were manually cleaned, which not only made it difficult to guarantee safety, but also caused fluctuations in production due to cleaning activities, which reduced the operation rate of equipment, caused waste of materials, increased production costs, and caused damage to the surrounding envir...

AI Technical Summary

Problems solved by technology

[0002] One of the biggest production bottlenecks in alumina production is the scarring of pipelines in the wet production process, and most of the scarring components are Na 2 O, Al 2 o 3 , SiO 2 and crystallized water, due to scarring, the pipeline transportation capacity is reduced, and the equipment capacity is reduced

In the past, almost all pipeline cleaning methods were manually cleaned, which not only made it difficult to guarantee safety, but also caused fluctuations in production due to cleaning activities, which reduced the operation rate of equipment, caused waste of materials, increased production costs, and caused damage to the surrounding environment.