|
US3178261A
|
|
Production of potassium fluoborate
|
|
US3070228A
|
|
Counterflow hydro-deslimer
|
|
US3086654A
|
|
Beneficiation of phosphate rock
|
|
US3091184A
|
|
Pump anti-cavitation device
|
|
US3084027A
|
|
Clarification of phosphoric acid
|
|
US3151941A
|
|
Defluorination of peosphoric acid
|
|
US3013664A
|
|
Beneficiation of phosphate rock
|
|
US2995437A
|
|
Defluorination of phosphate rock
|
|
US2995436A
|
|
Defluorination of phosphate rock
|
|
US2857331A
|
|
Flotation reagent
|
|
US2927692A
|
|
Concentration of minerals
|
|
US2938629A
|
|
Concentration of comminuted materials
|
|
US2815859A
|
|
Concentration of phosphatic material
|
|
US2839361A
|
|
Defluorination of phosphate rock
|
|
US2724501A
|
|
Concentration of phosphatic material
|
|
US2720972A
|
|
Tonnage totalizer
|
|
US2778722A
|
|
Defluorination of phosphate rock
|
|
US2798801A
|
|
Production of pelletized nitrogenous fertilizers
|
|
US2753045A
|
|
Concentration of minerals
|
|
US2753253A
|
|
Treatment of phosphate rock
|
