The application of the modified coal tar pitch

The paper introduced the classification and quality of coal tar pitch,modified coal tar pitch and modified methods,and discussed the requirements of bitumen,the application process,effects and shortcoming of modified bitumen in the production of carbon.It was clearly elaborated that the temperature of modified bitumen would be selected in the production of carbon based on the data obtained in practice.The results demonstrated that it was a higher demanding for temperature in the process of smelting,transportation and kneading because of special high softening point and viscosity of modified bitumen.The analysis of data showed that softening point couldn't guide precisely temperature of material marking,but the viscosity is in direct proportion to the temperature of material marking.Consequently,the viscosity could be regarded as a reliable reference index for the temperature choice of material marking.