公开(公告)号：US20200238302A1

公开(公告)日：2020-07-30

申请号：US16846819

申请日：2020-04-13

申请人： KEMIRA OYJ

发明人： Duane C. Wilson ,  Xihui Yin ,  Stephanie Kofsky-Wofford ,  Anna I. Casasús

IPC分类号： B03D1/016 ,  C08B37/00 ,  B03D1/02 ,  C08L5/14

摘要： Methods for preparing agglomerated hemicellulose compositions are provided. Agglomerated hemicellulose compositions comprising agglomerates are also provided herein. Also disclosed are processes for enriching a desired mineral from an ore comprising the desired mineral, wherein the process comprises carrying out a flotation process in the presence of one or more collecting agents and a depressant composition comprising an agglomerated hemicellulose composition.

公开(公告)号：US20200215551A1

公开(公告)日：2020-07-09

申请号：US16628392

申请日：2017-07-04

申请人： OUTOTEC (FINLAND) OY

发明人： Jere TUOMINEN ,  Rodrigo GRAU ,  Tatu MIETTINEN ,  Zakaria MÖNKÄRE

IPC分类号： B03D1/14 ,  B03D1/02

摘要： A froth flotation unit for treating mineral ore particles suspended in slurry includes a tank, a gas supply for introducing flotation gas into the slurry to form froth, and a first froth collection launder including a first froth overflow lip facing towards the centre of the tank. The froth flotation unit has a pulp area of at least 15 m2 measured at a mixing area. The froth flotation unit further includes a second froth collection launder with a first froth overflow lip facing the perimeter of the flotation tank, and a froth blocker arranged between the first froth overflow lip and the second froth overflow lip. A froth flotation line, its use, and a froth flotation method are also disclosed.

公开(公告)号：US20200048735A1

公开(公告)日：2020-02-13

申请号：US16496134

申请日：2018-03-20

申请人： NOURYON CHEMICALS INTERNATIONAL B.V.

发明人： Andrew Clist Lewis ,  Johan Siirak ,  Oijar Anders Cassel ,  Natalija Smolko-Schvarzmayr ,  Alberto Slikta

IPC分类号： C22B15/00 ,  B03D1/02 ,  B03D1/008 ,  B03D1/01

摘要： A collector composition and process to treat ores with a collector composition that comprises a nitrile group-containing compound of the formula (I) wherein R is a saturated or unsaturated, linear or branched, hydrocarbon group containing 8 to 26 carbon atoms, R″ is a saturated or unsaturated, linear or branched, hydrocarbon group containing 1 to 26 carbon atoms or a hydrogen atom or (-(D)j-CnH2nCN) group or R-((A)m-(B))x group, A is (—O—CH2CH2—); (—O—CH(CH3)CH2—) or (—O—CH(CH2CH3)CH2—), B is (—O—CpH2p—), D is (—CH2CH2—O—); (—CH(CH3)CH2—O—) or (—CH(CH2CH3)CH2—O—), x is 0 or 1, R′″ is hydrocarbon group containing 1 to 4 carbon atoms, Y is halide or methylsulfate, m, j are each independently an integer of 0-5, R″″ is a saturated or unsaturated, linear or branched, hydrocarbon group containing 1 to 26 carbon atoms, and n and p are each independently an integer of 1 to 5.

公开(公告)号：US10543493B2

公开(公告)日：2020-01-28

申请号：US14899220

申请日：2014-07-02

申请人： NOURYON CHEMICALS INTERNATIONAL B.V.

发明人： Natalija Smolko-Schvarzmayr ,  Anders Klingberg

IPC分类号： B03D1/016 ,  B03D1/02 ,  C08G69/44 ,  C08G63/685 ,  C08G69/10 ,  C07C237/12 ,  C08G69/36

摘要： The present invention relates to a compound obtainable by reacting an N-acyl neutral amino acid or a salt thereof, or an N-acyl neutral amino acid oligopeptide or a salt thereof with a monohydroxy monocarboxylic acid or a salt thereof. This compound is useful as a collector in a process for froth flotation of non-sulfidic ores, especially phosphate ores. The invention also relates to a method which comprises the steps of a) conditioning a pulped phosphate ore, wherein the phosphate ore comprises a calcium phosphate mineral or a mixture of such minerals, and gangue minerals, with an effective amount of a calcium phosphate mineral collector reagent, which is the above-mentioned compound, and optionally other flotation aids and b) performing a froth flotation process to recover the calcium phosphate mineral(s).

公开(公告)号：US20190381518A1

公开(公告)日：2019-12-19

申请号：US16480548

申请日：2018-02-07

申请人： Kemira OYJ

发明人： Sergio Cabo ,  Marcelo Moreira Da Costa ,  Xihui Yin

IPC分类号： B03D1/02 ,  B03D1/016 ,  B03D3/06

摘要： Selective polysaccharide agents or flocculants comprise one or more types of polysaccharides comprising one or more types of pentosan units. Also disclosed are processes for enriching a desired mineral from an ore comprising the desired mineral and gangue and/or other minerals, wherein the process comprises treating the ore in an aqueous medium with one or more selective polysaccharide agents or flocculants comprising one or more types of polysaccharides comprising one or more types of pentosan units.

公开(公告)号：US10478830B2

公开(公告)日：2019-11-19

申请号：US14587173

申请日：2014-12-31

申请人： Eriez Manufacturing Co.

发明人： Michael J. Mankosa ,  Jaisen Kohmuench ,  Eric S. Yan ,  Gerald H. Luttrell

IPC分类号： B03D1/24 ,  B03D1/16 ,  B03D1/02 ,  B03D1/08 ,  B03D1/22 ,  B03D1/14 ,  B01F3/04

摘要： What is claimed is a flotation separation system for partitioning a slurry. The slurry includes a hydrophobic species that can adhere to gas bubbles that form within the slurry. The flotation separation system includes a flotation separation cell. The flotation separation cell has a sparger unit and a separation tank. The separation tank is constructed to allow the bubble dispersion to form a froth at the top of the slurry contained in the separation tank. The sparger unit includes a slurry inlet, a slurry outlet, a sparging mechanism, a high shear element, and a gas inlet.

公开(公告)号：US20190336984A1

公开(公告)日：2019-11-07

申请号：US16513043

申请日：2019-07-16

申请人： Cytec Industries Inc.

发明人： Mikael Brasse ,  Esau Arinaitwe ,  Devarayasamudram Ramachandran Nagaraj

IPC分类号： B03D1/02 ,  B03D1/012 ,  B03D1/016 ,  C07C333/14 ,  C08L33/26 ,  B03D1/01

摘要： Compositions including blends of one or more acrylamide/allyl thiourea polymer as a first depressant, and one or more carboxyalkyl dithiocarbamate compound as a second depressant, and their use as depressants in the beneficiation of sulfide minerals from ores and/or concentrates are disclosed herein, along with methods for selectively separating value sulfide minerals from non-value sulfide minerals in a froth flotation process for the recovery of such value minerals.

公开(公告)号：US10434520B2

公开(公告)日：2019-10-08

申请号：US15672891

申请日：2017-08-09

申请人： Arr-Maz Products, L.P.

发明人： Zhengxing Gu ,  Guoxin Wang ,  Yu Xiong

IPC分类号： B03D1/02 ,  B03D1/008 ,  C01B25/41 ,  C01B25/42 ,  C01F11/18 ,  C11D1/14 ,  B01D21/00 ,  B03D1/012 ,  B03D1/014 ,  C01B25/01

摘要： The invention is related to a flotation process using an improved collector to remove alkaline earth metal carbonate impurities from phosphate ores. The flotation feed may be conditioned with the improved carbonate collector at acidic pH, and subjected to a reverse flotation. The cell overflow may be collected as waste in which carbonate minerals dominate, and the cell underflow may be the phosphate concentrate. The collector may be a combination of chemicals, comprising: (1) any kind of fatty acids, either conventional fatty acid, saponified fatty acid, or modified fatty acid; (2) chemicals with sulfonate or sulfate groups, such as dodecylbenzene sulfonic acid (DDBSA) or its salt, sodium dodecyl sulfate (SDS), sodium lauryl sulfate (SLS), sodium coco sulfate (SCS), etc.; and (3) phosphorous-bearing chemicals, such as sodium tripolyphosphate (STPP), sodium hexametaphosphate (SFMP), trisodium phosphate (TSP), Tetrasodiumpyrophosphate (TSPP), etc. With the improved collector, the separation selectivity and phosphate recovery may be significantly improved.

公开(公告)号：US20190275533A1

公开(公告)日：2019-09-12

申请号：US16346706

申请日：2017-11-01

申请人： CiDRA Corporate Services LLC

发明人： Mark R. FERNALD ,  Paul J. ROTHMAN ,  Paul DOLAN ,  Kirk JOHNSON ,  Patrick TUXBURY ,  Sandeep BALASUBRAMANYAM ,  Peter A. AMELUNXEN ,  Timothy J. BAILEY ,  Adam JORDENS ,  Joseph NORD

IPC分类号： B03B7/00 ,  B03B5/56 ,  B03D1/02

摘要： A reactor system has a number of stations arranged to recover mineral particles in a slurry. The system includes a hopper to receive the slurry and barren media having hydrophobic coating to attract the mineral particles. The hopper provides a mixture of barren media and slurry to a tumbler arranged to stir the mixture in order to increase the contact between the slurry and the barren media so as to allow the mineral particles to attach to the barren media to form mineral laden media. The mineral laden media are conveyed to a rinsing station where water jets are used to wash the gangue materials off the mineral laden media. The rinsed mineral laden media are mixed with a surfactant so that the mineral particles are released from the mineral laden media. High-pressure water and air jets are then used to remove remaining surfactant from the released media.

公开(公告)号：US10376901B2

公开(公告)日：2019-08-13

申请号：US15511138

申请日：2015-09-15

申请人： Akzo Nobel Chemicals International B.V.

发明人： Natalija Smolko-Schvarzmayr ,  Anders Klingberg ,  Elisabeth Henriksson ,  Henrik Nordberg

IPC分类号： B03D1/02 ,  B03D1/008 ,  B03D1/01 ,  B03D1/014 ,  B03D1/012

摘要： The present invention relates to the use of branched fatty alcohol-based compounds selected from the group of fatty alcohols with 12-16 carbon atoms having a degree of branching of 1-3, and their alkoxylates with a degree of ethoxylation of up to 3, as secondary collectors for the froth flotation of non-sulfidic ores, in combination with a primary collector selected from the group of amphoteric and anionic surface active compounds.