Flotation separation of glass from a mixture of comminuted inorganic materials
AssigneeOccidental Petroleum Corporation
InventorsBooker W. Morey, William R. White
Life of this patent
Estimating the term…
Abstract
Particulate glass values contained in a comminuted inorganic fraction and having the particle of a size up to about 10 mesh are recovered by froth flotation using an amine as the beneficiation reagent.
Claims48
A process for separating glass from a particulate mixture of inorganic materials which comprises subjecting a particulate mixture of inorganic materials including particles of a size up to about 28 mesh and containing, as a portion thereof, a quantity of particulate glass particles comprising glasses having the composition of from about 70 to about 73 percent by weight SiO.sub.2, from about 11 to about 18 percent by weight Na.sub.2 O, from about 7 to about 17 percent by weight CaO, the balance being essentially other metal oxides to froth flotation with a beneficiating amount of at least one functional amine glass collector reagent, said amine containing from about 8 to about 22 carbon atoms in at least one hydrocarbon group attached to a nitrogen atom to form a float fraction comprising predominantly particulate glass and an inorganic tailing substantially free of particulate glass, at least a portion of said particulate mixture of inorganic materials, exclusive of the particulate glass particles, being nonresponsive to the beneficiating action of said amine collector reagent to cause the particulate glass particles to concentrate in the float fraction.
A process for separating glass from a particulate mixture of substantially inorganic materials which comprises subjecting a particulate mixture of inorganic materials having a particle size between about 200 mesh and about 28 mesh and containing, as a portion thereof, a quantity of particulate glass particles comprising glasses having the composition of from about 70 to about 73 percent by weight SiO.sub.2, from about 11 to about 18 percent by weight Na.sub.2 O, from about 7 to about 17 percent by weight CaO, the balance being essentially other metal oxides to froth flotation with a beneficiating amount of at least one functional amine glass collector reagent, said amine containing from about 8 to about 22 carbon atoms in at least one hydrocarbon group attached to the nitrogen atom to form a float fraction comprising predominantly particulate glass and an inorganic tailing substantially free of particulate glass, at least a portion of said particulate mixture of inorganic materials, exclusive of the particulate glass particles, being nonresponsive to the beneficiating action of said amine collector reagent to cause the particulate glass particles to concentrate in the float fraction.
In a process for the treatment of solid wastes for recovery of values contained therein which includes classifying the solid waste into an organic fraction, a metals fraction and an inorganic tailing including glasses having the composition of from about 70 to about 73 percent by weight SiO.sub.2, from about 11 to about 18 percent by weight Na.sub.2 O and from about 7 to about 17 percent by weight CaO, the balance being essentially other metal oxides, said inorganic tailing being substantially free of organics and metals, the improvement which comprises:
- a. forming from the inorganic tailing a particulate inorganic mass including said glasses and having a particle size up to about 28 mesh;
- b. subjecting the particulate inorganic mass to froth flotation in the presence of a beneficiating amount of at least one functional amine glass collector reagent, a said amine collector reagent containing from about 8 to about 22 carbon atoms in at least one hydrocarbon group attached to a nitrogen atom to form a float fraction predominantly comprising said particulate glasses and an inorganic residue substantially free of said glasses.
In a process for the treatment of solid wastes for recovery of values contained therein which includes classifying the solid waste into an organic fraction, a metals fraction and an inorganic tailing including glasses having the composition of from about 70 to about 73 percent by weight SiO.sub.2, from about 11 to about 18 percent by weight Na.sub.2 O and from about 7 to about 17 percent by weight CaO, the balance being essentially other metal oxides, said inorganic tailing being substantially free of organics and metals, the improvement which comprises:
- a. forming from the inorganic tailing a particulate inorganic mass including said glasses having a particle size between about 200 and about 28 mesh;
- b. subjecting the particulate inorganic mass to froth flotation in the presence of a beneficiating amount of at least one functional amine glass collector reagent, a said amine containing from about 8 to about 22 carbon atoms in at least one hydrocarbon group attached to a nitrogen atom to form a float fraction predominantly comprising said particulate glasses and an inorganic residue substantially free of said glasses.
A process for separating glass from a mixture of inorganic materials containing as a part thereof particulate glass having a particle size less than a preselected mesh size which comprises:
- a. separating materials having a particle size greater than the preselected mesh size from the materials having a particle size less than the preselected mesh size;
- b. further comminuting the materials having a particle size less than the preselected mesh size to a size containing particulate glass having particle size less than about 28 mesh;
- c. classifying the mixture of inorganic materials having a particle size less than about 28 mesh to remove particles having a size less than about 200 mesh;
- d. separating the particulate glass fraction from the mixture of inorganic materials having a particle size between about 200 and about 28 mesh by froth flotation to form a float containing predominantly glass, said glass including glasses having the composition of from about 70 to about 73 percent by weight SiO.sub.2, from about 11 to about 18 percent by weight Na.sub.2 O and from about 7 to about 17 percent by weight CaO, the balance being essentially other metal oxides using a beneficiating amount of at least one amine glass collector reagent, said amine collector reagent containing from about 8 to about 22 carbon atoms in at least one hydrocarbon group attached to a nitrogen atom, at least a portion of said particulate mixture of inorganic materials, exclusive of the particulate glass particles, being non-responsive to the beneficiating action of said amine collector reagent to cause the particulate glass particles to concentrate in the float fraction.
Dependencies are inferred from the claim text.