In fact, there are many changes in our current development. Among these changes, we have three comparative effects of cold mash, which reflect the changes experienced by cold mash over the years. Today, we will talk about some factors brought by these three changes.
1. Strength deterioration: according to the test of used carbon bricks and the alkali metal corrosion test of unused carbon brick samples in the laboratory, it is found that the strength of carbon bricks decreases sharply after being corroded by alkali metals.
2. Volume and plastic expansion: it is found that the volume of carbon brick sample expands after alkali metal corrosion test. When the sample is corroded by alkali metal under different loads, it is found that the sample has different degrees of plastic deformation and forms a plastic body according to different loads.
3. Promote graphitization: the chemical test of the used carbon brick found that the thermal conductivity of the carbon brick increased after being eroded by the alkali metal, and the graphite phase was observed under the microscope. Therefore, it was concluded that the alkali metal could promote the so-called low-temperature graphitization of the carbon brick.