Abstract: 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.

Abstract: The present invention relates to a collector composition containing 80 to 100 wt % of at least one alkylethermonoamine, less than 20 wt % alkyletherdiamine, all wt % based on total weight of all amine components, and wherein the alkylethermonoamine contains between 60 and 93% isotridecyl(C13)etherpropylamine, 5 and 30% of isododecyl(C12)etherpropylamine, 0 and 10% of isoundecyl(C11)-etherpropylamine, 0 and 10% of isodecyl(C10)etherpropylamine, 2 and 10% tetradecyl(C14) etherpropylamine, all % being based on total weight of alkylethermonoamine and the use thereof in a process to treat iron ore.

Abstract: The present invention relates to a process to treat magnetite ore containing less than 15 wt % of silica on total ore, the process containing a step of (froth) flotating in the presence of a collector composition that contains 80 to 100 wt % of at least one alkylethermonoamine, less than 20 wt % alkyletherdiamine, all wt % based on total weight of all amine components, and wherein the alkylethermonoamine is an alkylethermonoamine with a degree of branching higher than 1, the alkyl containing 11 to 17 carbon atoms, and further relates to the collector composition that can be used in the process.

Abstract: The present invention relates to a collector composition containing 80 to 100 wt % of at least one alkylethermonoamine, less than 20 wt % alkyletherdiamine, all wt % based on total weight of all amine components, and wherein the alkylethermonoamine contains between 60 and 93% isotridecyl(C13)etherpropylamine, 5 and 30% of isododecyl(C12)etherpropylamine, 0 and 10% of isoundecyl(C11)-etherpropylamine, 0 and 10% of isodecyl(C10)etherpropylamine, 2 and 10% tetradecyl(C14) etherpropylamine, all % being based on total weight of alkylethermonoamine and the use thereof in a process to treat iron ore.

Abstract: The present invention relates to the use of a polyquaternary polymer obtainable by reacting i) a dialkylamine having the structure R1R2NH, where R1 and R2 independently are hydrocarbyl groups having 1-3 carbon atoms; ii) a difunctional compound selected from the group consisting of epihalohydrins, diepoxides, precursors of epihalohydrins and epoxides which under alkaline conditions are readily converted into the corresponding epoxy compounds, and mixtures thereof; and iii) optionally a polyfunctional amine selected from the group consisting of ammonia, primary amines, alkylenediamines having 2-6 carbon atoms, and polyalkylenepolyamines having the structure H2N—[R3—N(R4)]y—R3—NH2, where y is an integer from 1 to 5, R3 is an alkylene radical having 2 to 6 carbon atoms, and R4 is selected from the group consisting of hydrogen, a hydrocarbyl group having 1-3 carbon atoms, and an ?-aminoalkyl group having 2 to 6 carbon atoms; as a depressant in a method for froth flotation of potash ores.

Abstract: The present invention relates to the use of a polyquaternary polymer obtainable by reacting i) a dialkylamine having the structure R1R2NH, where R1 and R2 independently are hydrocarbyl groups having 1-3 carbon atoms; ii) a difunctional compound selected from the group consisting of epihalohydrins, diepoxides, precursors of epihalohydrins and epoxides which under alkaline conditions are readily converted into the corresponding epoxy compounds, and mixtures thereof; and iii) optionally a polyfunctional amine selected from the group consisting of ammonia, primary amines, alkylenediamines having 2-6 carbon atoms, and polyalkyle nepolyamines having the structure H2N—[R3—N(R4)]y—R3—NH2, where y is an integer from 1 to 5, R3 is an alkylene radical having 2 to 6 carbon atoms, and R4 is selected from the group consisting of hydrogen, a hydrocarbyl group having 1-3 carbon atoms, and an ?-aminoalkyl group having 2 to 6 carbon atoms; as a depressant in a method for froth flotation of potash ores.

Abstract: The present invention relates to a process for enriching an iron mineral from a silicate-containing iron ore by reverse froth flotation of the ore using a collecting composition comprising: a) a compound of formula R1O-A-NH(CH2)nNH2 (I), wherein R1 is a straight or branched hydrocarbyl group with 12-15 carbon atoms, A is a group —CH2CHXCH2—, wherein X is hydrogen or a hydroxyl group, and n is a number 2-6; b) a compound of formula R2NH2 (II), where R2 is a hydrocarbyl group having 12-14 carbon atoms; c) a compound of formula R3NH2 (III), wherein R3 is a straight or branched, saturated or unsaturated hydrocarbyl group having 16-22 carbon atoms; and d) optionally a depressing agent for the iron mineral, wherein the amount of a) is at least 65% by weight, based on the total weight of a), b) and c), and at most 90% by weight, based on the total weight of a), b) and c), and wherein the weight ratio between c) and b) is 4:1 to 1:1.

Abstract: The present invention relates to a process for enriching an iron mineral from a silicate-containing iron ore by reverse froth flotation of the ore using a collecting composition comprising: a) a compound of formula R1O-A-NH(CH2)nNH2 (I), wherein R1 is a straight or branched hydrocarbyl group with 12-15 carbon atoms, A is a group —CH2CHXCH2—, wherein X is hydrogen or a hydroxyl group, and n is a number 2-6; b) a compound of formula R2NH2 (II), where R2 is a hydrocarbyl group having 12-14 carbon atoms; c) a compound of formula R3NH2 (III), wherein R3 is a straight or branched, saturated or unsaturated hydrocarbyl group having 16-22 carbon atoms; and d) optionally a depressing agent for the iron mineral, wherein the amount of a) is at least 65% by weight, based on the total weight of a), b) and c), and at most 90% by weight, based on the total weight of a), b) and c), and wherein the weight ratio between c) and b) is 4:1 to 1:1.

Abstract: The invention relates to a flotation process for removal of slimes from potash ores which includes a step in said process wherein a collector is used which is a mixture of ethoxylated fatty amines having the formulae (I) wherein R1 and R2 are, independently, a hydrocarbyl group having 1-22 C-atoms, and n is on average above 15 and less than 100, and (II) wherein R3 is a hydrocarbyl group having 8-22 carbon atoms; z is a number 1-3; X, Y and Y? are, independently, an alkyl group with 1-4 carbon atoms or the group -(EO)sH, wherein EO is an ethyleneoxy unit and s is on average 5-50, and the sum of all s is on average 15 or more, and less than 100; provided that at least one of X, Y and Y? is a group -(EO)sH; and where the molar ratio of I to II is 1:5 to 5:1. The invention also relates to said mixtures of collectors where the molar ratio of I to II is 1:5 to 5:1.

Abstract: The invention relates to a flotation process for removal of slimes from potash ores wherein a collector is used selected from the group of ethoxylated fatty amines having the formulae (formula I) wherein R1 and R2 are, independently, a hydrocarbyl group having 1-22 C-atoms, and n is on average above 15 and less than 100, and (formula II) wherein R3 is a hydrocarbyl group having 8-22 carbon atoms; z is a number 1-3; X, Y and Y? are, independently, an alkyl group with 1-4 carbon atoms or the group -(EO)sH, wherein EO is an ethyleneoxy unit and s is on average 5-50, and the sum of all s is on average 15 or more, and less than 100; provided that at least one of X, Y and Y? is a group -(EO)sH. The invention further relates to a process wherein the step of flotation of slime is followed by a step of flotation of KCl using a different type of collector.

Abstract: The invention relates to a flotation process for removal of slimes from potash ores which includes a step in said process wherein a collector is used which is a mixture of ethoxylated fatty amines having the formulae (I) wherein R1 and R2 are, independently, a hydrocarbyl group having 1-22 C-atoms, and n is on average above 15 and less than 100, and (II) wherein R3 is a hydrocarbyl group having 8-22 carbon atoms; z is a number 1-3; X, Y and Y? are, independently, an alkyl group with 1-4 carbon atoms or the group -(EO)sH, wherein EO is an ethyleneoxy unit and s is on average 5-50, and the sum of all s is on average 15 or more, and less than 100; provided that at least one of X, Y and Y? is a group -(EO)sH; and where the molar ratio of I to II is 1:5 to 5:1. The invention also relates to said mixtures of collectors where the molar ratio of I to II is 1:5 to 5:1.

Abstract: The invention relates to a flotation process for removal of slimes from potash ores wherein a collector is used selected from the group of ethoxylated fatty amines having the formulae (formula I) wherein R1 and R2 are, independently, a hydrocarbyl group having 1-22 C-atoms, and n is on average above 15 and less than 100, and (formula II) wherein R3 is a hydrocarbyl group having 8-22 carbon atoms; z is a number 1-3; X, Y and Y? are, independently, an alkyl group with 1-4 carbon atoms or the group -(EO)sH, wherein EO is an ethyleneoxy unit and s is on average 5-50, and the sum of all s is on average 15 or more, and less than 100; provided that at least one of X, Y and Y? is a group -(EO)sH. The invention further relates to a process wherein the step of flotation of slime is followed by a step of flotation of KCl using a different type of collector.

Abstract: The present invention relates to a froth flotation process in which silicates are separated from an iron ore in the presence of a collector containing a quaternary ammonium compound having the formula R1R1N+R3R4 1/z Xz? (I), in which the groups R1 independently are hydrocarbon groups, preferably aliphatic groups containing 6-14 carbon atoms and/or the group R2—(OR7)m—OR8—, where the groups R2 independently are acyl groups containing 6-14 carbon atoms, the groups R7 independently are alkylene groups containing 2-4 carbon atoms, the groups R8 independently are alkylene groups containing 2-3 carbon atoms and m is a number from 0-5, R3 and R4 independently are alkyl groups containing 1-4 carbon atoms or groups (R5O)pH, where the groups R5 independently are alkylene groups having 2-4 carbon atoms and p is a number from 1-4, X is an anionic group, and z is the charge of the anion X.

Abstract: The invention refers to a device for separating a surface layer of a liquid by a container submerged in the liquid. The container includes a bottom, a wall member, connected to the bottom and having a variable length, and a separating member, which is connected to the wall member and communicates with a space in the container via an opening. An overflow portion of the separating member is located below a free liquid surface of the surface layer and permits the flowing of liquid. A discharge conduit extends from the space for liquid discharge. A floating member, connected to the separating member, floats on the liquid outside the container and exerts a lifting force upon the separating member in a direction prolonging the wall member. A submerging member is connected to the separating member and located below the over flow portion.

Abstract: The present invention relates to a process for enriching an iron mineral from a silicate-containing iron ore by carrying out, at a pH of 8-11, a froth flotation in the presence of a depressing agent for the iron mineral and a collecting agent containing a combination of an ether monoamine and an ether polyamine, which contain an aliphatic hydrocarbon group having 6-22 carbon atoms in a weight ratio of the ether monoamine to the ether polyamine of 1:4-4:1. The invention also discloses a composition which is suitable for use in the process.

Abstract: Inlet device for a centrifugal separator, which easily can be modified so that the centrifugal separator in a simple way can get a broadened range of applications.

Abstract: A centrifugal rotor has (a) an axially movable primary slide (5) for closing or opening peripheral outlets (11) and bordering a closing chamber (14) having inlet (15) and outlet (16) for a closing liquid, and (b) an axially movable secondary slide (20) for allowing or stopping flow through said closing liquid outlet (16), the secondary slide (20) having opposite sides bordering an opening chamber (22) and a closing chamber (21). An axially movable part is located radially outside said closing liquid outlet (16) and forms a partition (12) between the closing chambers (14 and 21) of the primary and secondary slides; the secondary slide's closing chamber (21) is closed radially inwards by an annular seal (24) between the secondary slide (20) and part (12a) of said partition (12); and the secondary slide (20) when opening uncovers an annular opening for passage of a closing liquid from the primary slide's closing chamber (14) to the secondary slide's opening chamber (22).

Abstract: A mosaic printer comprising a printing head with relative movability along a printing line on a printing sheet to be printed. The head supports a number of wire ends arranged along a substantially rectilinear line extending perpendicular to the printing line and each wire end upon excitation producing a printing mark on the printing sheet, desired signs being formed by selective activation of the said wire ends during relative motion of the printing head. According to the present invention at least the front portion of the printing head, which determines the orientation of the said substantially rectilinear line, is rotatable about an axis, which is substantially perpendicular to the printing sheet, whereby signs having different inclinations can be formed by rotating the front part of the printing head.