N&wfti...
let's turn the microscope on
the completely new F i l t e r a i d for use in strongly a l k a l i n e liquors — The idea of using carbonaceous filteraids in processes involving caustics or fluorides is not new. But NEROFIL — a processed carbon-based filteraid — is completely n e w . . . and valuable because it overcomes the difficulties often encountered with earlier carbon materials. (A) is a photomicrograph of a crushed carbonaceous material (quite similar to previous carbon filteraids). This, however, is merely the reactor feed from which N E R O F I L (B) is made. Both photom i c r o g r a p h s a r e t h e same m a g n i f i c a t i o n . T h e marked differences are evident.
NEROFIL's success as a filteraid stems from two important features. First, of course, its physical and chemical stability... even boiling caustic has negligible effect. Second, the high filter cake porosity and low cake d e n s i t y of N E R O F I L yield f a s t throughput of liquid and superior clarity of filtrate. This stability and filtration efficiency have led several different industries to adopt NEROFIL in their processing, with excellent results. Complete information on NEROFIL is available to you in a new bulletin, just issued .. .write for it.
Great Lakes Carbon
Corporation
Nerofil Department — 612 So. Flower St., Los Angeles 17, Calif. Dept. LTK — 333 No. Michigan Ave., Chicago , III. For further information, circle number 111 A on Readers' Service Card, page 117 A
VOL. 48, NO. 11
·
NOVEMBER 1956
111
A
