Document 5kgjXBbm2jpnaDdOpXJMMoRLD

w r GRACE a co RESEARCH DIVISION oASRNETCN research center ' 3 ~ 9 PC LIE 32. COLUMBIA, MARYLAND 2 I CUM Te '.ephc.-e 301 - 5.31-5711 c RACE CONSOLIDATED MONTHLY REPORT JULY 1973 This Consolidated Monthly Summary contains the technical information for July 1973. Because of the highly confidential nature of its contents, circulation is limited. Those receiving copies are requested to i init arc e<= * to only those members within their organi zation vno have a real need-to-know. GRACE CONFIDENTIAL 15208076 jIDATi EDITION This refers contains information on ;he following activity e; ,e Washington Researcn Center; PROJECT TITLE PROJECT NO. PAGE 3AREX Desalting Plant Services - WRC Support Mono-Kcte Product Improvement Chemical Treatment of Vermiculite Ore Verrrlc elite Thermal Expansion Davisor. Cracking Catalyst Auto Exnaust Catalyst Monolith Catalyst Support Alumina Sphere Process HYPOLTM Type FHP KYPOLTM Type CHC Epoxy Hardeners MODAFLCW Replacement New Epoxy Resins Printable Water-Based Release Coatings Wet-Strength Agents Polystyrene Bead-Board Shrinkage Alrmoia Support . Fire Retardancy - Marco Polyester Resins Disposable Dishes for Microwave and Thermal Ovens 2451 2659 2682 2684 2419 2302 2304 2212 1432 1438 1404 1445 1408 1435 1441 1437 1561 1407 1332 1 2 3 H 4 4a 4b 4c 5 6 7 8 6 9 10 10 11 11 12 Photopolymer Wear Coating for Resilient Flooring Dry-Film Photoresist Photocured Wire Insulation - Magnet Wire Solder Photoresist Photopoleaner Production Polyene Inventory LETTERFLEX - GLASS Project Adapted Rumen Microbes - CHRON-X Dairy Methane Inhibition Enzymatic Treatment of Feedlot Bloat Scours Preventative Poultry -Growth Promoter Ammonium Isobutyrate as a Grain and Haylage Bound Enzymes FRADIASE Preservative 1343 1372 1329 1387 1314 1392 1385 4640 4647 4649 4650 4634 4661 4631 4629 4635 13 13 14 17 17 17a 18 19 19 19 20 20 20 21 2_ 1S20S077 1x1`u PROJECT TITLE For-.pac Support - Foar Studies CleaR relishing Powder Magnapore" Catalyst Production Research Division Activity Report PROJECT NO. 1427 2187 2417 PAGE 22 22 22 Appendix 15208078 r c ust 7, 1973 MONO -KO'-E. r/Cu'jCT uM?FOVZMSNT (Project 2659) The tread objective cf this program is to gain understanding and ''ink the solution to the Mono-Kote shrink-crack problem. Shrink age and cracking of Monc-Kote are serious field problems remedied at present only by removal and replacement--a costly procedure. Finding the causes and solution(s) to the problems is a major effort of CPE with participation by WRC. Our role has been to determine the fundamental properties of Mono-Kote components (gyp sum plaster cr ZOU and vermicullte) and their interaction in MonoKote mortars. This program is now complete. Preliminary conclusions follow. Final conclusions will be made basis a statistical analysis by the Mathematical Department. I. With ZOU/vermiculite mortars (ZOU/vermiculite + water): 1) Flexural strength., generally considered a measure of cracking resistance, is dependent upon vermicullte type and particle size, water level, and drying time. #b Kearney vermicullte strongest at 85 psi (water/ solids 0.95) and 37 psi (w/s 1.15); #3 Libby weakest at 57 psi (w/s 1.40) and 7 psi (w/s 1.70). Maximum strength is attained only after elimination of free water by oven drying or curing at atmospheric condi tions . 2) Expansion/contraction is relatively small at T 0.5$. No cracking observed despite wide variations in water level. 3) Water demand. water demand of veruicullte/zou mortar decreases as particle size decreases for constant Vicat at 25 (Vicat is a measure of wet-mortar consistency). #3 Libby Unattrlted #3 Libby Attrited #3 Kearney Unattrlted #3 Kearney Attrited Water/Solids 1.55 1.32 1.23 1.09 II. With MK-IV Formulations: 1) Expansion/contraction less in MK-IV than ZOU/vermicu lite mortars. Maximum MK-IV shrinkage -0.12$; zero expansion. 2) Maryland (Nova Scotia) and Gypsum, Ohio ZOU's (both US Gypsum) gave evidence of cracking In MK-IV. These were short micro cracks. California and Iowa ZOU's (both National Gypsum) showed no evidence of cracking, micro or otherwise. 18208079 EDITICL -3 - August 7. 1973 3) There is no evidence tc show shrinkage in (l) is related tc cracking described in (2). Statistical analysis of data in progress; when finished, a final report will be prepared. Recommendations and new Mono-Kote program will be sub mitted to CPD for approval. (Kraus, Kolbe, Legal) IMPROVED VERMICULITE EXPANSION The following two projects have a common goal of improving the yield of finished vermicullte product from vermiculite ore. The approach on Project 2682 is to improve expansion by chemical treatment of the ore; while Project 2684 is attempting to Improve the thermal efficiency of the expansion process. CHEMICAL TREATMENT OF VERMICULITE ORE (Project 2682) Experimental work, at both WRC and Kearney, South Carolina, has shown that chemical treatment of Allen vermiculite ore will improve expansion characteristics, thus improving yield and subsequently plant throughput. Last month, it wa3 described that Allen ore Group 3, a marginal product, could be upgraded to perform in a manner similar to standard Waldrep by treatment with 20$ diammoni um phosphate solution. Thi3 has the effect of increasing the yield about 20 bags per ton, or about 45$. No substantial experimental work has been conducted this month. We are awaiting the results of an economic analysis being made by CPD, Cambridge, who have been advised of the results. Preliminary calculations by Hartwig (Process Development) show that profit ability can be increased significantly but actual numbers, of course, depend upon factors of which we are not aware, our calcu lations based on information from CPD on the vermiculite ore re serves at Kearney show that reserves can be effectively increased by a factor of 74$. This calculation is made on the basis that the reserves exist in a ratio of 50$ marginal Allen and 50$ stan dard Waldrep. Presently, the reserves are being used in the ratio of 15-85. If the treatment permitted the ore to be used in the same ratio as in the reserves, l.e., 1:1 instead of the present 1:5.7, this would add 7.4 years to reserves for each ten-year life presently calculated. 15 208080