The present disclosure relates to a collector composition containing (i) as a primary collector the compound of the formula (I) wherein R is an alkyl group containing between about 5 and about 16 carbon atoms that may be branched or linear, k is a value of about 1 to 3, m is an integer from about 0 to about 25, each A independently is —CH2-CH2— or —CH2CH(CH3)— or —CH2-CH(CH2-CH3)—, n is an integer of at least about 3 and at most about 8, and wherein X is an anion derivable from deprotonating a Brønsted-Lowry acid, and (ii) a second compound selected from the group of other primary collectors, secondary collectors, depressants, frothers, and solvents. The disclosure also relates to a process to treat siliceous ore that contains a step of froth flotating in the presence of a collector composition that contains the primary collector compound.

The present disclosure relates to a collector composition containing (i) as a primary collector the compound of the formula (I) wherein R is an alkyl group containing between about 5 and about 16 carbon atoms that may be branched or linear, k is a value of about 1 to 3, m is an integer from about 0 to about 25, each A independently is —CH2-CH2— or —CH2CH(CH3)— or —CH2-CH(CH2-CH3)—, n is an integer of at least about 3 and at most about 8, and wherein X is an anion derivable from deprotonating a Brønsted-Lowry acid, and (ii) a second compound selected from the group of other primary collectors, secondary collectors, depressants, frothers, and solvents. The disclosure also relates to a process to treat siliceous ore that contains a step of froth flotating in the presence of a collector composition that contains the primary collector compound.

A magnesium suppressant/flocculant for use in separating dolomite from calcium phosphate. The magnesium suppressant/flocculant may be applied at a mine site prior to subjecting ore fractions to phosphate flotation or at a chemical plant after grinding.

The present invention relates to a method for the selective recovery of valuable metal minerals in a froth floatation process using a non-oxidizing biocide.

Methods of making various capillary foams are provided. The foams can include liquid foams having a plurality of particles connected by a network of a secondary fluid at the interface between the discontinuous and continuous phase. The foams can also include solid foams where the continuous phases (bulk fluid) is removed to produce the solid foam having high overall porosities and low densities. Densities as low as 0.3 g cm.sup.3 and porosities as high as 95% or higher can be achieved. The secondary fluid can be polymerized to further strengthen the solid foam. Methods and devices are also provided for oil recovery from water using a capillary foam. The methods can include forming a capillary foam wherein the oil is the secondary fluid, and wherein the foam can transport the oil to the surface of the water.

Methods of making various capillary foams are provided. The foams can include liquid foams having a plurality of particles connected by a network of a secondary fluid at the interface between the discontinuous and continuous phase. The foams can also include solid foams where the continuous phases (bulk fluid) is removed to produce the solid foam having high overall porosities and low densities. Densities as low as 0.3 g cm.sup.3 and porosities as high as 95% or higher can be achieved. The secondary fluid can be polymerized to further strengthen the solid foam. Methods and devices are also provided for oil recovery from water using a capillary foam. The methods can include forming a capillary foam wherein the oil is the secondary fluid, and wherein the foam can transport the oil to the surface of the water.

The present application relates to a concentration process of iron minerals from ultrafine tailings (slimes) from iron ore processing through reverse flotation with pH between 8.5 and 10.5 with the addition of amide-amine type collector, or further a mixture thereof with traditional cationic collectors (amines), in the absence of any depressant, alternatively including a step of high field magnetic concentration, which allows to obtain a concentrate with iron content higher than 66% and contents of SiO2+Al2O3 below 4%.

The present application relates to a concentration process of iron minerals from ultrafine tailings (slimes) from iron ore processing through reverse flotation with pH between 8.5 and 10.5 with the addition of amide-amine type collector, or further a mixture thereof with traditional cationic collectors (amines), in the absence of any depressant, alternatively including a step of high field magnetic concentration, which allows to obtain a concentrate with iron content higher than 66% and contents of SiO2+Al2O3 below 4%.

The disclosure relates to mineral processing, and more particularly to a copper(II)-ammonia complex ion sulfidization activator, and its preparation and application. A molar ratio of NH3 to Cu.sup.2+ in the active ingredient of the copper(II)-ammonia complex ion sulfidization activator is 2:1-4:1. The preparation method includes: dropwise adding an ammonia solution to a copper salt solution; and adjusting the mixture to pH 6-7.2 with dilute sulfuric acid to obtain the copper(II)-ammonia complex ion sulfidization activator. During the sulfidization flotation for the copper oxide ore, the copper(II)-ammonia complex ion sulfidization activator is added and mixed uniformly with the ore slurry prior to the introduction of the sulfidizing agent.

The disclosure relates to mineral processing, and more particularly to a copper(II)-ammonia complex ion sulfidization activator, and its preparation and application. A molar ratio of NH3 to Cu.sup.2+ in the active ingredient of the copper(II)-ammonia complex ion sulfidization activator is 2:1-4:1. The preparation method includes: dropwise adding an ammonia solution to a copper salt solution; and adjusting the mixture to pH 6-7.2 with dilute sulfuric acid to obtain the copper(II)-ammonia complex ion sulfidization activator. During the sulfidization flotation for the copper oxide ore, the copper(II)-ammonia complex ion sulfidization activator is added and mixed uniformly with the ore slurry prior to the introduction of the sulfidizing agent.