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Collector composition for flotation of activated sphalerite
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5587001 PROCESS FOR TREATING IRON-CONTAINING SULFIDIC ROiCKS AND ORES
1041
contained within the single cell apparatus such that liquid exiting the vessel must pass through the filter media after having been subjected to flotation treatment.
5599442 De Vries Nadine H C Wilmington, DE, UNITED STATES assigned to E I Du Pont de Nemours and Company A process is provided for pretreating iron-containing sultidic ores of precious metals or other such sultidic rocks with a source of manganate ions prior to lixiviation to form a layer of manganese oxide, thereby reducing the consumption of lixiviation reagents or reducing acid rock drainage.
5591327 FLOTATION EQUIPMENT Walters Jeremy P A District Krugersdorp, Transvaal Province, SOUTH AFRICA The invention provides for flotation equipment which is locatable inside a container for a pulp to be subjected to a flotation process and a rotor or impeller or agitator rotatable within the container about a substantially vertical axis, the rotor including first means for imparting a radiaby upward pulp stream movement to pulp particles in the container, the first means being in the form of a set (of arcuate surfaces located between the vanes and second means for moving air from atmosphere in a downward direction to below the pulp stream level in the container, the second means comprising a set of arcuate surfaces extending from the top of the rotor to outlets in the peripheral surfaces of the vanes.
5591347 SINGLE CELL GAS FLOTATION SEPARATOIR WITH FILTER MEDIA Cairo John A, Young John A Baton Rouge, LA, UNITED STATES assigned to Unicel Inc A simplified single cell apparatus and method for removal of suspended impurities in liquids using gas flotation and filtration is provided wherein the method and apparatus are preferably directed to induced gas flotation separation of suspended impurities in combination with a filter media for filtration removal of remaining suspenlded impurities. A filter media is
COLLECTOR COMPOSITION FOR FLOTATION OF ACTIVATED SPHALERITE McRae Colin; Lee Danny; Avotins Peter Maroubra, AUSTRALIA assigned to Cytec Technology Corporation New and improved processes and compositions for use in flotation recovery of metal values from base metal zinc sulfide ores are disclosed. The collector compositions for froth flotation of metal sulfide minerals comprise the combination of at least one allylalkylthionocarbamate compound having the formula (*See Patent for Chemical Structure*) wherein R is a C2 to C8 alkyl radical, preferably R is an isobutyl group, and 2) a xanthate having the formula (*See Patent for Chemical Structure*) wherein R’is a C2 to C8 alkyl radical, preferably a C4 radical. More preferably, the C4 radical of the xanthate is a butyl or isopropyl group. Preferably, the concentration of allylalkyhhionocarbamate to xanthate of a ratio of from about 1:99 to about 5050 percent by weight.
5601703 FLOTATION MACHINE AND PROCESS FOR REMOVING IMPURITIES FROM COALS Szymocha Kazimier; Ignasiak Boleslaw; Pawlak Wanda; Kulik Conrad; Lebowitz Howard Edmonton, CANADA assigned to Electric Power Research Institute Inc The present invention is directed to a type of flotation machine that combines three separate operations in a single unit. The flotation machine is a hydraulic separator that is capable of reducing the pyrite and other mineral matter content of a coal. When the hydraulic separator is used with a flotation system, the pyrite and certain other minerals particles that may have been entrained by hydrodynamic forces associated with conventional flotation machines and/or by the attachment forces associated with the formation of
microagglomerates are washed and separated from the coal.
5587001 PROCESS FOR TREATING IRON-CONTAINING SULFIDIC ROiCKS AND ORES
1041
contained within the single cell apparatus such that liquid exiting the vessel must pass through the filter media after having been subjected to flotation treatment.
5599442 De Vries Nadine H C Wilmington, DE, UNITED STATES assigned to E I Du Pont de Nemours and Company A process is provided for pretreating iron-containing sultidic ores of precious metals or other such sultidic rocks with a source of manganate ions prior to lixiviation to form a layer of manganese oxide, thereby reducing the consumption of lixiviation reagents or reducing acid rock drainage.
5591327 FLOTATION EQUIPMENT Walters Jeremy P A District Krugersdorp, Transvaal Province, SOUTH AFRICA The invention provides for flotation equipment which is locatable inside a container for a pulp to be subjected to a flotation process and a rotor or impeller or agitator rotatable within the container about a substantially vertical axis, the rotor including first means for imparting a radiaby upward pulp stream movement to pulp particles in the container, the first means being in the form of a set (of arcuate surfaces located between the vanes and second means for moving air from atmosphere in a downward direction to below the pulp stream level in the container, the second means comprising a set of arcuate surfaces extending from the top of the rotor to outlets in the peripheral surfaces of the vanes.
5591347 SINGLE CELL GAS FLOTATION SEPARATOIR WITH FILTER MEDIA Cairo John A, Young John A Baton Rouge, LA, UNITED STATES assigned to Unicel Inc A simplified single cell apparatus and method for removal of suspended impurities in liquids using gas flotation and filtration is provided wherein the method and apparatus are preferably directed to induced gas flotation separation of suspended impurities in combination with a filter media for filtration removal of remaining suspenlded impurities. A filter media is
COLLECTOR COMPOSITION FOR FLOTATION OF ACTIVATED SPHALERITE McRae Colin; Lee Danny; Avotins Peter Maroubra, AUSTRALIA assigned to Cytec Technology Corporation New and improved processes and compositions for use in flotation recovery of metal values from base metal zinc sulfide ores are disclosed. The collector compositions for froth flotation of metal sulfide minerals comprise the combination of at least one allylalkylthionocarbamate compound having the formula (*See Patent for Chemical Structure*) wherein R is a C2 to C8 alkyl radical, preferably R is an isobutyl group, and 2) a xanthate having the formula (*See Patent for Chemical Structure*) wherein R’is a C2 to C8 alkyl radical, preferably a C4 radical. More preferably, the C4 radical of the xanthate is a butyl or isopropyl group. Preferably, the concentration of allylalkyhhionocarbamate to xanthate of a ratio of from about 1:99 to about 5050 percent by weight.
5601703 FLOTATION MACHINE AND PROCESS FOR REMOVING IMPURITIES FROM COALS Szymocha Kazimier; Ignasiak Boleslaw; Pawlak Wanda; Kulik Conrad; Lebowitz Howard Edmonton, CANADA assigned to Electric Power Research Institute Inc The present invention is directed to a type of flotation machine that combines three separate operations in a single unit. The flotation machine is a hydraulic separator that is capable of reducing the pyrite and other mineral matter content of a coal. When the hydraulic separator is used with a flotation system, the pyrite and certain other minerals particles that may have been entrained by hydrodynamic forces associated with conventional flotation machines and/or by the attachment forces associated with the formation of
microagglomerates are washed and separated from the coal.