Document 70ypKNxNOYqpRZ7xqad0BR9GV

n i t-uT'C1 -- 0 Srtiiu IN TER-COUP ANY AND IHTER-OSPAf.TKEHTAb CORRESPONDENCE to- Mr. P. A. Denney r.I.L.___________ rnoM.- R* R* Dturill* OATC: November 8. 1972 sujcct. ;;EW ^rrirr case ox uza."ite con7aiki:;c i::sulati::c materials r.s. 775 Osar V.r. Bear.ey: Enclosed you will fine the application form vith the signatures you requested in your letter dated October' 16, 1972 to Mr. E. J. Jago. Also you will find a correspondence from Hcdnan Mines Limited answering our inquiry on the chemical composition of the "Hedtaan Fundamental Cationic Fibre" (HrCF). S'.'rrtarv of the Uscre rf Hedmcr. Fundamental Cntlanlc Fibre in PROF.M*?- and ?r.CFLZX' Laboratory tests and three successful production runs amounting to over 2,000 ).ot cops showed that Ked:..an Fundamental Cationic Fibre (HFCF; iris at least two very important slurry properties which have only been found lr. paper end asbestos fibers. Suspension and dispersion art the tvo key properties which are attained with the usage of 1IFCF ir. high fiber rteipes such as cur IU0FLZX line. Thus far, MFCF has been tried from 41 te 109Z in veter based slurries. The range from 4Z to 20U in PP.OFAX ' er.d PROFLEX* type slurries has definitely shovn it's compat ibility with all ingredients in the various eonparicions of recipes which include: 1) Fillers ----- silica flour, Vysnlte, nulllte, alumina, olivene, marneslee, chrome magnesite, diatosilta, calcium silicate and anthracite coel. 2) Fibers ----- Alumina silicate, calcium silicate fiber plait and asbestos in amounts of less chan 111. 3) Binders-----Phenol formaldehyde (?F) end vres f"-taldchyoe (UK). High temperature resistance of HrCF amounting to greater than 1309*C is elso an asset to the refractoriness of insulating hat tops, /.mitee tests show it to be e good insulator ana reports from, the" field have confirmed the recipe containin'*. shove .?vcr.---c vie Id results. The formulation which Is currently bclnp, produced and sei:i as a hot top insulator is a.?.-52/>7/?ROFLu.< RECEIVED !j!-`y L 0 1972 Fos-QQ-oaaaee345* 1314 -2- Aoproxi'r.-;te Conoosicion of E.T.-5267/Pr.QFL".'( Silica Flour Diatonitc Alunina Silicate Fiber Binders `'11FCF Asbestos Fiber Class -- -- ___ -- -- -- -- 497. 25*4 10% 2% 7% 1% 6% A detailed disclosure will follow as soor. as possible. rjtD/cel Sincerely Yours, ipvjiCj R. R. Dzurilla Sceel Mill Products nivisisr. ros-aa-aaaaaaa-is:; 1315