Home > Exhibition > Content

How to prevent corrosion of the centrifuge

May 22, 2019

The biggest problem with industrial centrifuges is the corrosion problems of centrifuges used in chemical raw materials for a long time. The automatic centrifuge is a filter centrifuge that automatically operates the lower part of the automatic scraper. The machine is controlled by frequency converter, and the separation factor is adjustable. It adopts medium speed feeding, high speed separation and low speed unloading. After the machine is started to the feeding speed, the material enters the rotating drum from the upper feeding tube to perform the separation operation. According to the material process, after the liquid is removed, the material is discharged at a reduced speed, and the solid phase is discharged from the lower part. The following measures are recommended to prevent or slow down the corrosion of the centrifuge.

 

First, the surface protection measures of the centrifuge: One of the basic ideas of controlling corrosion is to isolate the corrosive environment. The flat-plate centrifuge adopts a platform structure, and the outer casing and the platform are welded together. The shell cover and the shell adopt a flange-fitting quick-open structure, the opening of the shell cover is assisted by a mechanical balancer, and the feeding tube, the cleaning tube and the visual tube are arranged on the shell cover. Mirrors, observation lights, vents, etc. In the centrifuge design, the commonly used surface treatment methods are flange, galvanized, chrome plated, electroless chrome plating, and the like. These methods are effective in many cases, but an important phenomenon to be aware of for rotating parts is that the base material and the coating are two materials, and their linear expansion coefficients are different, during the elastic deformation of the rotating parts. Different deformations are produced, resulting in a large number of microcracks; if the above phenomenon occurs, the formation of corrosion will be accelerated. Therefore, the surface protection of rotating parts should be used with caution. It is very important to choose the right material centrifuge, because different materials and separation requirements, it is necessary to choose different models. After determining the model and main parameters, the strength component materials are fundamentally determined according to various factors such as corrosion resistance, physical and chemical properties, and cost performance of different materials. From the point of view of the material itself, the target material it targets is safe.

 

Second, the centrifuge's mechanical design, an excellent design can extend the life of the equipment and ensure the safety of the equipment. For structural design, the design flaws most likely to accelerate corrosion are stress concentration trends and gap environments. Sometimes, although the metal is immersed in the solution, the corrosion rate is small, but due to changes in the chemical and electrochemical states of the internal solution, a gap is formed, causing severe crevice corrosion.

 

Third, it is very important to choose the right material centrifuge, because different materials and separation requirements, it is necessary to choose different models. After determining the model and main parameters, the strength component materials are fundamentally determined according to various factors such as corrosion resistance, physical and chemical properties, and cost performance of different materials. From the point of view of the material itself, the target material it targets is safe. Fourth, the use of corrosion inhibitor centrifuges involves many disciplines. In order to make better use of centrifuges, in addition to some of the above measures, we should also pay attention to the study of its application environment. The application of corrosion inhibitors has also been widely used in practical applications. For some harsh environments, the use of a suitable corrosion inhibitor can make the part suitable. The use of corrosion inhibitors should be an effective means of centrifuge application as long as the process permits. Through the above points, the centrifuge can be provided with good protection, so that the centrifuge has better corrosion resistance, so that the centrifuge can be used longer and safer.

 

https://www.bscentrifuges.com/