Abstract: An invention including an apparatus and process for generating small bubble foam using foam generating equipment in manufacturing processes such as benefication, flotation, flocculation, and for dust control in size reduction processes of a substrate, whereby a continuous, precise amount of a defactant is added to the treated substrate after introduction of the foam and processing of the substrate, in order to neutralize the residual small bubble foam so that the residual foam does not interfere in subsequent processes.

Abstract: This invention provides a collapsible waste disposal container apparatus and a method of disposing of hazardous waste in the subduction zone between tectonic plates making up the earth's upper mantle.

Abstract: A method for suppressing dust during grain handling and storage, using small bubble foam created from an edible foam-producing surfactant.

Abstract: A device for controlling the flow of foam which uses a piston-cylinder arrangement to receive foam at the rapid flow rate of a foam generator until the cylinder is substantially full of foam and then to dispense the foam at a lower flow rate by using the piston to gradually push the foam out of the cylinder.

Abstract: A method for suppressing dust in grain handling includes applying an edible foam so that it penetrates the grain to reach the dust particles.

Abstract: A method for suppressing dust during grain handling and storage, using small bubble foam created from an edible foam-producing surfactant.

Abstract: A device for controlling the flow of foam which uses a piston-cylinder arrangement to receive foam at the rapid flow rate of a foam generator until the cylinder is substantially full of foam and then to dispense the foam at a lower flow rate by using the piston to gradually push the foam out of the cylinder.

Abstract: Apparatus for controlling the flow of a foam uses a bellow enclosed in a housing. The bellows is filled with foam under pressure from a foam generator and expands a preselected amount at which point the flow of foam into the bellows is interrupted. Simultaneously with the interrupting of the flow of foam into the bellows, air under pressure is routed into the housing which causes the bellows to collapse forcing the foam out of the bellows. The apparatus is particularly useful in the froth flotation (benefication) of minerals.

Abstract: This invention prevents dust, and particularly respirable dust, from becoming airborne at locations where coal or other dusty products are transferred from one support to another, and where spaces between the pieces of broken material open up and would otherwise release dust into the surrounding atmosphere. Foam, having bubbles small enough to be broken by respirable dust particles, is discharged into the spaces where the small bubbles, bursted by the dust particles, implode and wet the particles and cause adherence of the particles to adjacent surfaces, such as other foam or the broken pieces of material that separate to open up the spaces.

Abstract: Apparatus for making foam from water, air and surfactant produces very small bubble foam by discharging the ingredients for the foam through passages that cause the stream of ingredients to be alternately expanded and contracted as by travel along tortuous passages to generate the foam. The foam may be delivered to pipes of relatively large diameter to a place of use, particularly for dust suppression. A more uniform flow of foam is obtained as compared with foamers of the prior art where the foam sometimes broke up into alternating slugs of foam and air when discharged from pipes of large enough diameter to cause the foam to travel at low velocity.

Abstract: Water sprays and foam, of the type used for fire fighting, have been used for dust suppression; but were not effective in removing the smaller particles from dust laden air. This invention uses a foam of high film strength that makes possible the bending of the foamed film to shorter radiuses of curvature and resultng smaller bubbles. Such a foam can be used to remove all of the detectable particulate matter from dust laden air or other gases.