Method of admixing dust precipitated in an electrostatic...

Method of agglomerating particulate material and an...

Method of and apparatus for extraction of gold from placer...

Method of and apparatus for purifying polluted gases

Method of and apparatus for reducing back corona effects

Method of and control system for controlling electrostatic...

Method of automatically controlling an electrostatic...

Method of beneficiation of complex sulfide ores

Method of cleaning dust-loaded gas

Method of cleaning electric filter and electric filter

Method of concentration of finely divided materials

Method of concentration of rebellious oxidized copper ores

Method of conditioning flue gas

Method of conditioning flue gas

Method of constructing a continuously operable flotation...

Method of controlling operation of an electrostatic...

Method of controlling operation of an electrostatic...

Method of deaeration

Method of depressing non-sulfide silicate gangue minerals

Method of depressing non-sulfide silicate gangue minerals