Application of the method determining the pressure of the spreading coal and blends, as a method of extending the life of coke oven batteries
The analysis the state of coke batteries was carried out, with the help of which the main types of masonry wear the coke oven heating walls were established. The dynamics and nature of the damage suggest that for batteries with a long service life an individual approach is needed, both in the choice of the technological mode and in the selection of the raw material base coking, taking into account the pressure magnitude of coking blend. Since, in the process of coking coal blends, one the external manifestations of this process is a development of pressure expansion to the walls of coke oven chambers, when calculating the strength of coke ovens, the pressure of 7 kPa is taken as the critical pressure expansion. Exceeding this value leads to an increase in amperage and drilling of furnaces during the coke delivery of, premature wear of the refractory masonry, which requires more frequent repairs, and in extreme cases, deformation the walls of coking chambers. Therefore, coal blend, it is necessary to compile, taking into account not only the production of coke with the necessary mechanical strength, but also ensuring a bursting pressure not exceeding the standard value. To do this, in a laboratory setting to determine the pressure expansion, it is necessary to classify the incoming coal concentrates according to the indicator of pressure expansion, in order to compile blends with a safe value of pressure expansion.