Abstract: This invention relates to the preparation of N-(phosphonomethyl)glycine (“glyphosate”) from N-(phosphonomethyl)iminodiacetic acid (“PMIDA”), and more particularly to methods for control of the conversion of PMIDA, for the identification of reaction end points relating to PMIDA conversion and the preparation of glyphosate products having controlled PMIDA content.

Abstract: Methods for recycling cement kiln dust are described and involve heating a mixture containing at least one additive, water, and cement kiln dust for a sufficient time and at sufficient temperatures to form cement clinker. The additive contains an organic polyacid, a hydroxy carboxylic acid, a polycarboxylic acid, a saccharide, a carbohydrate, a salt thereof, or combinations thereof. A cement slurry containing water, cement kiln dust, and the above-described additive is also described as well as apparatus for recycling the cement kiln dust.

Abstract: For convenient packaging of plastic bookbinding strips, cassettes which may be securely stacked one upon the other are provided. The end edges of each strip are received in channels formed in opposed side rails. The rails are attached to transverse spacer bars which are preferably detachably connected to the side rails and are interchangeable to accommodate strips of different lengths-e.g., 81/2 inches, 11 inches, etc. Cassettes may be securely stacked one upon the other by means of mating stacking struts extending upward and downward from the side rails. Very short stacking struts may be used when packaging flat female binding strips in the cassette. A detent is provided in the ends of the rails preventing removal of strips until the detent is bent out of position. The cassette is especially useful in equipment which mechanically assembles punched sheets and strips preparatory to binding a book in a binding machine.

Abstract: An improved process for producing stable, high purity alkali metal or alkaline earth metal ferrate salt products is disclosed. In this process, crude ferrate salts, after being precipitated and separated from a chilled mother liquor, are purified first with a chilled anhydrous, water miscible extraction solvent to remove residual process contaminants therefrom followed by chilled oxidation resistant rinse solvent step, miscible with said extractant, followed by a drying step so as to produce a stable, purified ferrate product which can be safely stored without special provisions. Both batch and continuous modes of operation are disclosed.