METHOD OF PRODUCING COLD PACKED HEARTH MASS Russian patent published in 2009 - IPC C25C3/06 C25C3/08 

FIELD: metallurgy.

SUBSTANCE: invention refers to non-ferrous metallurgy, particularly to production of carbonic materials used for lining of hearth of electrolyser. The method consists in preparation of carbonic charge, and in mixing carbonic charge with a special additive, plastisiser and adhesion agent. Carbonic charge is prepared of continuous granulometric composition with maximum size of carbon grain not more, than 8 mm. Contents of fractions is determined inside the regions limited with curves graphed on boundary values of fraction contents, mm/wt %: There are evaluated optimum parameters of preparation and mixing of carbonic charge. As carbonic charge mixture of electro-calcinated anthracite and artificial graphite is used.

EFFECT: production of cold packed hearth mass with increased volume extension at burning, and reduced porosity and reduced maximum dimension of pores.

4 cl, 3 dwg, 2 tbl