(US4671907-A)      High-strength high-density carbon materials are mfd. by (a) pulverising carbonaceous raw material to form a carbon powder of C-content 92wt.% or more, volatile content 7-20wt.% at 900 deg.C or less, and linear shrinkage of 6%or less as a moulded body during heating to 500 deg.C or less to particle dia. 10-40 microns; then (b) moulding and baking.    Raw material is obtd. by heating coal tar pitch at 10-70 Torr reduced pressure to 400-530 deg.C, increasing the C-content and eliminating low mol. wt. and decomposed components. Opt. raw material is obtd. by heating coal tar pitch under atmos. pressure, then eluting and adjusting volatile solvent with an aromatic solvent.    USE -   As electrodes, carbon materials for nuclear reactors, crucibles, heating elements, mechanical seals, sliding members, current collecting elements, and dies for heat pressing. (8pp)a    (DE3528185-C)      High strength, high density C materials are made from a C-contg. raw material contg. at least 92 wt.% C and 7-20 wt.% of materials volatile up to 900 deg. C, with which moulded bodies show a linear contraction of 6% max. during heating to 500 deg. C.    The material is pulverised to a mean particle dia. of more than 10 microns to a max. of 40 microns and is moulded without a binder and fired. Pref. the raw material is produced by heating of coal tar at a reduced pressure of 1330-9310 Pa at a temp. of 400-530 deg. deg. C. Coal tar can be heated under atmos. pressure, the volatile constituents being elutriated with an aromatic solvent and removed. Fibres can be added to the raw material, obtd. by firing of organic fibres in an inert atmos..    ADVANTAGE -   Material is formable without binder and relatively coarse particles prevent cracking during firing. (10pp)g    (GB2163143-B)      A method for the manufacture of carbon materials comprising: pulverising a carbonaceous raw material to give a carbon powder having a carbon content of at least 92% by weight, a volatiles content of 7-20% by weight up to 900 deg.C, and linear shrinkage as a moulded body of at most 6% during heating up to 500 deg.C to an average particle diameter of greater than 10 microns and up to 40 microns, then moulding the carbon powder and baking it in a non-oxidizing atmosphere.