PLUMBAGINOUS PRODUCTS PRODUCTION METHOD Russian patent published in 2008 - IPC C01B31/04 C04B35/83 

FIELD: metallurgy.

SUBSTANCE: either a liquid or a firm binder pitch material is to be mixed with a fraction which consists of particles and contains at least about 35% mass of coke, coal and their mixtures. These particles have such a diameter that their main part can pass through a sieve with the cell sizes ranging from 0.25 mm and up to 25 mm. After completion of an at least 50% of the mixing cycle, one can add in the mixture the carbonaceous filaments whose stretching durability starts from 10546 and reaches 1054605 kgf/cm² with the 6-15 mcm diameter. The mixture obtained is then extruded. The non-burnt partially finished product is to be burnt, and afterwards carbonated and graphitized under the temperatures no less than 2500° C. The mixture can also additionally contain filling agent with bantam size particles and an additive - an oxide of iron or an oil coke.

EFFECT: plumbaginous products are known for their heightened durability and lowered fragility.

27 cl, 4 tbl, 4 ex