Kaiser Aluminum

About: Kaiser Aluminum is a based out in . It is known for research contribution in the topics: Alloy & Corrosion. The organization has 546 authors who have published 504 publications receiving 6554 citations. The organization is also known as: Kaiser Aluminum and Chemicals.

Determination of pitch volatiles in airborne particulates. I. Problems with the benzene-Soxhlet extraction method.

Abstract: The benezene-Soxhlet extraction determination of pitch volatiles collected with personnel samplers is shown to be an inaccurate procedure At present, results are calculated from the weight loss of filters on extraction In reality, they reflect mechanical losses of filter media and particullate In addition, plasticizers in certain cassettes are adsorbed onto the filters and are subsequently extracted, which partially explains the high blank values associated with the method This paper summarizes the experimental evidence supporting these conclusions and provides a basis for the development of an acceptable analytical method

Production of high purity alumina hydrate

Abstract: Leachable soda content (expressed as Na2O) of Bayer process alumina hydrate (Al2O3.3H2O) is reduced to below about 0.015 percent by weight by directly treating a slurry of the hydrate with steam at atmospheric pressure and at temperatures between about 60 DEG C and 99 DEG C. Steam treatment removes surface adhered sodium compounds and in addition renders difficulty accessible areas available to leaching. The hydrate is suitable for use as flame retardant filler for polymers, such as latex, where alkali impurities cause processing problems.

Purification of aromatic diisocyanates

Abstract: AROMATIC DIISOYANATES ARE TREATED WITH ZINC-FATTY ACID SALTS TO REMOVE HYDROLYZABLE CHLORINE AND ACIDIC IMPURTITIES. THE DESIRED RESULTS ARE OBTAINED BY UTILIZING DIISOCYANATE-SOLUBLE ZINC-FATTY ACID SALTS WHICH CAN BE SEPARATED FROM THE TREATED DIISOCYANATE BY SIMPLE DISTILLATION AND WHICH ARE ADDED TO THE DIISOCYANATE IN AN EFFECTIVE AMOUNT SUFFICIENT TO REDUCE THE HYDROLYZABLE CHLORINE AND THE ACIDIC IMPURITY LEVEL. THE TREATED AND DISTILLED DIISOCYANATES ARE SUITABLE FOR THE PRODUCTION OF COLORLESS POLYURETHANES.

Method of repairing a refractory structure

Abstract: Repair of furnace structures, particularly hot furnace structures, can be achieved by gunning with less dusting and rebound and higher cohesiveness, adherence, and strength in the gunned refractory when the refractory comprises an admixture of aluminosilica aggregate, plastic clay, graphite and, as binder, a liquid sodium silicate solution.

Long-Term Marine Atmospheric Stress Corrosion Tests on High-Strength AlZnMgCu Alloys

Abstract: To compare the stress corrosion resistance of the newer high-strength alloys, Aluminum Association (AA) 7049 and 7050, with the established AA 7075 alloy, smooth and precracked specimens from 32- and 76-mm-thick plates of each alloy were subjected to 105 months of exposure in a marine atmosphere. The smooth specimen results revealed that the performance of AA 7050-T7451 and 7049-T7351 approached that of 7075-T7351, even though their strength levels were equal to or greater than the specified minimum values for AA 7075-T651. The 76-mm plates of all of the alloys were more resistant than the corresponding thinner 32-mm plates. Threshold stress intensities (KIscc) for the 32-mm plates could not be estimated because of obvious self-loading effects in the precracked specimens. KIscc values for the 76-mm AA 7049 and 7050 plates were estimated to be less than 10 MPa m vs 25 to 30 MPa m for AA 7075-T7351. It remains unclear to what extent specimen self-loading affected this comparison.