초록 ▼

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

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.

대표청구항 ▼

A method for controlling the flow rate of foam comprising the steps of: introducing from into an expandable and contractable bellows contained in a bellows housing in which the inside of the bellows is not in fluid communication with the bellows housing; interrupting the introduction of said foam in

A method for controlling the flow rate of foam comprising the steps of: introducing from into an expandable and contractable bellows contained in a bellows housing in which the inside of the bellows is not in fluid communication with the bellows housing; interrupting the introduction of said foam into said bellows at a preselected point in the expansion of the bellows; and introducing pressurized air into said bellows housing to collapse the bellows, thereby forcing said foam out of said bellows.