Abstract: A battery acid filler apparatus and method are disclosed. The apparatus and method utilize a single, relatively large diameter tube to both fill and retract excess acid from a battery, at a single station by means of controlling the time of filling and the opposing pressures of acid pumps.

Abstract: A process for purifying contaminated aqueous solutions without using ion exchange resins or organic solvents is provided. The process comprises contacting an aqueous solution with a getter compound and a non-polymeric carrier compound in a dispersed state to remove dissolved contaminants or recover dissolved valuable materials. Suitable carrier compounds having pendant long chain hydrocarbon radicals and hydrophilic moieties are disclosed. The process is highly efficient and effective for removing a wide variety of dissolved contaminants such as metal ions, non-metal ions and dissolved organic contaminants such as dyes.

Abstract: An apparatus for enveloping a battery plate with a microporous battery separator material by a dip method. The method involves first removing air bubbles from the plate by dipping the plate in a liquid, then dipping the plate into a polymer-solvent-filler suspension. After removal from the polymer-solvent-filler suspension, the plate is dried by evaporation or contacted with a nonsolvent and then dried. The result is the formation of a microporous separator envelope about the battery plate. The apparatus comprises a plurality of tanks for housing components for the production of the envelopes, into which tanks a battery plate can be sequentially dipped. Additionally, the apparatus includes a screen between the first two tanks for attracting liquid when contacted by a wet battery plate, a dryer, and a plate carrier.

Abstract: A method for preparing plates primarily intended for use in a dry charge battery includes washing pasted and formed battery plates in water flowing at a low flow rate until most, but not all, of the forming acid has been removed, and thereafter washing said plates in additional water flowing at a higher flow rate to remove residual acid; treating the additional wash water using an ion exchange bed to remove the acid and reusing the deacidified water as wash water.

Abstract: A dip method of enveloping a battery plate with a microporous battery separator material. The method involves a first removing air bubbles from the plate by dipping the plate in a liquid, then dipping the plate into a polymer-solvent-filler suspension. After removal from the polymer-solvent-filler suspension, the plate is dried by evaporation or contacted with a nonsolvent and then dried. The result is the formation of a microporous separator envelope about the battery plate.