Graphite productsIt is already an indispensable necessity for industrial use, so how to improve the bulk density? In order to let you know more about the processing of graphite products, the following editor will introduce how to improve the bulk density of graphite products:

1. Increase volume shrinkage to improve bulk density

The weight loss of roasted products after graphitization is about 2.6%. To improve the bulk density of products in the graphitization process, the fundamental thing is to increase the volume shrinkage. The use of special resins as binders can improve the volume shrinkage of products during baking and graphitization. Reduce the temperature rise speed of products in the range of 1400 ~ 2100 degrees. The effect of increasing the volume contraction can be obtained.

2. Roasting products and improving the bulk density of products after roasting

The coke formation value is related to the atmosphere in the roasting system. Due to the decomposition of the binder in the product and the porosity of the product being much smaller than that of the filler, a gas concentration gradient is generated between the product and the filler. The greater the gradient, the greater the gas diffusion velocity in the product, which will aggravate the gas decomposition in the product and reduce the coke formation value. In order to obtain a large coking value, the air permeability of the filler should not be too large. Pressure roasting is very effective for improving the bulk density of products.

3. One roasting process to improve product density

To control the bulk density of products, it is necessary to measure and control the bulk density of raw products. It can be seen that excessive bonding dose is unfavorable to the bulk density of the product, because 40% of the weight of the binder escapes as volatiles during the baking process. However, practice has also proved that too few binders will lead to many pores in the raw products, which will also reduce the bulk density and have different uses for other performance indicatorsGraphite productsThe required performance indicators are also different. But it is generally desired that the product has a sufficient bulk density. The above three points can effectively improve the bulk density of graphite products processing. I hope they can help you