& nbsp; & nbsp; First of all, we need to use graphite products, so we also pay attention to the selection of raw materials for products, so next, Jebsen's Xiaobian will share with you.

  & nbsp; & nbsp; 1. High purity carbon materials such as nuclear graphite, heating of vacuum high-temperature electric furnace, heat-resistant components, high-purity gold mold, fire rib nozzle, etc. with high chemical purity requirements should be used for the brewing process. In addition to purity requirements, they must also have high thermal stability and mechanical strength. Therefore, the raw materials must also have the properties of high mechanical strength and easy graphitization.

2. High purity carbon materials such as nuclear graphite, heating of vacuum high-temperature electric furnace, heat-resistant components, high-purity gold mold, fire rib nozzle, etc. with high chemical purity requirements should be used for the brewing process. In addition to purity requirements, they must also have high thermal stability and mechanical strength. Therefore, the raw materials must also have the properties of high mechanical strength and easy graphitization.

Low ash raw materials include petroleum coke, asphalt coke and carbon black. From the perspective of these three raw materials, shishanxiong is easy to be stone processed, followed by asphalt coke and carbon black. Therefore, petroleum coke is preferred. However, the mechanical strength of petroleum coke is low after graphitization. In order to make up for this disadvantage, some (e.g. 20%) asphalt coke is often added to improve the mechanical strength of products. Because the mechanical strength of asphalt bear is higher than that of petroleum coke, but graphitization is difficult. The addition of asphalt coke to petroleum coke can also prevent the agglomeration of petroleum coke when it is burned.

For small-sized high-purity products, if very high mechanical strength is required, a part of carbon black can also be added. The addition of blackening can greatly improve the mechanical strength of products and improve the density of products (filling the particle gap). However, this is not suitable for large-scale products, because the retention rate of carbon black decreases after addingGraphite productsThe air permeability during baking makes the product easy to crack.