Radial flow electrostatic filter
Radioactive ionizer for electrostatic precipitator
Rapper assembly for electrostatic precipitators
Rapper mechanism
Rapping apparatus for an electrostatic precipitator
Rapping assembly and electrode supports for electrostatic...
Rapping device
Rapping device
Rapping device for precipitation electrodes in electrostatic...
Rapping mechanism for rapping the electrodes of an...
Rapping shaft drive assembly for electrostatic precipitators
Reactif deprimant pour la flottation des minerais et procede...
Reagent and process for beneficiating ores
Reagent consumption in mineral separation circuits
Reagent for centration of ores by flotation
Reagent for the purification of waste waters from the paper...
Reagent for zinc ore and method of utilizing same
Recirculation system for wet-removal of precipitated dust
Reclaiming plastic and paper fibre from plastic coated paper
Recovering copper by flotation using n-mercaptoalkyl amide...