-
公开(公告)号：US20230129507A1
公开(公告)日：2023-04-27
申请号：US17622051
申请日：2020-06-24
发明人： Liguang WANG , Chun Yong NG
摘要： A method for stabilising a froth or a foam comprising subjecting the froth or foam to vibrations or sound waves having a frequency of less than 20 kHz. The frequency may be less than 1 kHz, for example, a frequency of from 300 Hz to 500 Hz, or from 300 to 450 Hz, or from 300 to 400 Hz. A method for froth flotation is also described.
-
公开(公告)号：US11596953B2
公开(公告)日：2023-03-07
申请号：US17108257
申请日：2020-12-01
发明人： Graeme J. Jameson
摘要： A separation system is disclosed for separating selected particles from a mixture of particles in a fluid. The system includes a froth flotation vessel into which in use the mixture of particles and fluid are subjected to an upward flow of an introduced gas to form a froth layer which rises above an interface formed between the froth layer and the mixture of particles and fluid, such that a quantity of the selected particles is conveyed out of the vessel by the froth layer to become a first product of the system. The vessel also has a first outlet arranged in use for receiving a flow of some of the mixture of particles and fluid from the vessel, an entry to the first outlet being located in a region proximate to, but below, the interface. The vessel also has a second outlet arranged in use for receiving a flow of some of the mixture of particles and fluid from a region of the vessel which is located below the first outlet. In use the first outlet receives a quantity of the selected particles which were not conveyed out of the vessel by the froth layer, and the second outlet receives a quantity of the selected particles in a first by-product of the system. The first by-product comprises a relatively higher percentage of solids compared to the flow of particles and fluid in the first outlet. The flow of the mixture of particles and fluid from the vessel via the first outlet passes to a classification device, which separates the flow into two or more fractions on the basis of their size or density or a combination of the two.
-
公开(公告)号：US11554379B2
公开(公告)日：2023-01-17
申请号：US16321736
申请日：2017-07-28
申请人： OUTOTEC (FINLAND) OY
发明人： Peter Gerard Bourke , Antti Rinne , Rob Coleman
摘要： A flotation line for treating mineral ore particles suspended in slurry, including at least three flotation units arranged in fluid connection with each other for allowing gravity-driven slurry flow between flotation units, and a feed inlet for supplying slurry into a first flotation unit; wherein at least three flotation units are configured to be uniplanar, each flotation unit includes at least one flotation cell; and wherein the launder lip height of each uniplanar flotation unit is lower than the launder lip height of the preceding uniplanar flotation unit in the direction of the slurry flow, so that an angle of sloping between a first uniplanar flotation cell, equipped with a launder lip and being larger than 150 m3, and a last uniplanar flotation cell, equipped with a launder lip and being larger than 40 m3, is formed; and the angle is 1.5 to 10 degrees relative to horizontal.
-
公开(公告)号：US11517918B2
公开(公告)日：2022-12-06
申请号：US15776148
申请日：2016-11-16
发明人： Paul J. Rothman , Mark R. Fernald , Peter A. Amelunxen , Paul Dolan , Timothy Bailey , Michael Ryan
IPC分类号： B03D1/14 , B03D1/016 , B03D1/02 , B03D1/08 , C08F236/06 , C08F236/08 , B03D1/004
摘要： Apparatus uses engineered collection media to recover mineral particles in a mineral extraction process, e.g., for processing a tailings stream at the end of a flotation separation process. The engineered collection media are added to slurry/tailings containing the mineral particles. The engineered collection media have collection surfaces coated with a chemical selected for attracting the mineral particles to the collection surfaces so the engineered collection media becomes mineral laden media in the slurry/tailings in a loading stage. The apparatus include three stages: removing unwanted material from mineral laden media; using a stripping agent to strip the mineral particles from the mineral laden media; and separating the engineered collection media from the mineral particles and the stripping agent. The stripping agent is reused for stripping, and the engineered collection media are returned to the loading stage. The engineered collection media can have a smooth or foam-like surface.
-
公开(公告)号：US20220288605A1
公开(公告)日：2022-09-15
申请号：US17631331
申请日：2020-02-24
摘要： This proposed invention consists of a process for elaborating a depressant agent, which includes, by weight percentage, dissolving 1-40% humic acid, or humic acid derivatives, in 50-99% water at a temperature between 15-30° C. and solubilizing it by adding 0-10% potassium hydroxide; the temperature will rise due to the solvation of potassium hydroxide (30-45° C.); leaving to react and homogenize for 20-60 minutes; causing the latter product to react with 0.1-15% of fulvic acid to generate a product that controls zinc and iron during flotation. The purpose of this invention is to fully replace zinc sulfate, reducing the dosage of the replacement depressant agent by up to 20 times less, furthermore reducing the amount of CuSO4 used in the flotation process, among other improvements.
-
公开(公告)号：US11440026B2
公开(公告)日：2022-09-13
申请号：US17034258
申请日：2020-09-28
发明人： Paul J. Rothman , Mark R. Fernald , Peter A. Amelunxen , Paul Dolan , Timothy J. Bailey , Michael Ryan
摘要： Apparatus uses engineered collection media to recover mineral particles in a slurry. The apparatus has a tumbler cell and a rotation device to rotate the tumbler cell. The tumbler cell has a container to hold a mixture of the engineered media and the slurry containing the mineral particles. The container is turned such that at least part of the mixture in the upper part of the container is caused to interact with at least part of the mixture in the lower part of the container. As such, the contact between the engineered media and the mineral particles is enhanced. The surfaces of the engineered media are functionalized with a chemical having molecules to attract the mineral particles to the surfaces so as to form mineral laden media. After the mineral laden media are discharged from the tumbler cell, the mineral particles can be separated from the engineered media by stripping.
-
公开(公告)号：US11413622B2
公开(公告)日：2022-08-16
申请号：US15526059
申请日：2015-11-24
发明人： Michael Steinwender , Jörg Sötemann
IPC分类号： B02C17/18 , B02C23/30 , B03D1/08 , B03D1/14 , B02C17/16 , B02C23/14 , B02C23/36 , B03D1/016 , B03D1/02 , B03D1/16 , B03D1/26
摘要： The present invention relates to apparatus for simultaneous grinding and froth flotation of at least one crude mineral and/or pigment, a process carried out in the apparatus for manufacturing at least one ground mineral and/or pigment, use of the ground mineral and/or pigment bearing phase obtainable by the process in paper applications as well as in paper, plastics, paints, coatings, adhesives, sealants, food, feed, pharma, concrete, cement, cosmetic, water treatment and/or agriculture applications, preferably in a wet end process of paper machine, in cigarette paper, board, and/or coating applications, or as support for rotogravure and/or offset and/or ink jet printing and/or continuous ink jet printing and/or flexography and/or electrophotography and/or decoration surfaces and the ground mineral and/or pigment bearing phase or ground mineral and/or pigment obtainable by the process.
-
公开(公告)号：US20220250089A1
公开(公告)日：2022-08-11
申请号：US17731059
申请日：2022-04-27
摘要： A sensor system for a sparger having a housing with an inlet configured to receive a flow of compressed gas for injection of bubbles into a flotation system. The sensor system comprises a flow measurement device in line with the inlet and a movable rod assembly within the housing. A sensor and a target that move relative to each other, wherein one of the sensor and the target is located in the housing the other is located on or attached to the movable rod assembly. The sensor for measuring parameters of motion, position, and vibration, relative to the target based on the movement of the movable rod assembly. The sensor system for determining operating parameters of the sparger based on analysis of the measured motion, position, and vibration of the sensor relative to the target and flow measurements from the flow measurement device.
-
公开(公告)号：US20220184637A1
公开(公告)日：2022-06-16
申请号：US17593847
申请日：2021-02-04
发明人： Jie DENG , Shanzhi DENG , Xinhua ZHANG , Da CHEN , Shiqiang YAN , Jun SONG
摘要： An ore dressing process for medium-grade and low-grade mixed collophanite includes the following steps: S1; crushing ores to obtain crushed ores; S2: screening the crushed ores to obtain fine-fraction ores and coarse-fraction ores divided into at least two size fractions; S3: performing a photoelectric separation to the coarse-fraction ores of different size fractions to obtain photoelectric separation concentrates and photoelectric separation tailings of each size fraction; S4: combining the photoelectric separation concentrates of the each size fraction to obtain pre-enriched concentrates; S5: combining the fine-fraction ores and the pre-enriched concentrates, and then performing an ore grinding to obtain minerals to be separated; S6: adding water to the minerals to be separated to obtain a floatation pulp, and then performing a floatation to obtain phosphate concentrates and tailings.
-
10.发明授权公开(公告)号：US11340150B2
公开(公告)日：2022-05-24
申请号：US16067531
申请日：2016-12-28
摘要： The invention relates to a submersible system (1) for measuring the density and/or concentration of solids in a dispersion, which can be in the form of a liquid, a mixture of multiple liquids, a suspension of solids in liquid, or a combination of these forms, inside of a reactor (11) into which gas in the form of bubbles is introduced, the system comprising: an open, pass-through gas exclusion device (4) having a tubular body (5) with a variable cross-section through which the dispersion without gas bubbles enters, the device coupling to an inlet tube (6); a scaled chamber (8) that has a means for measuring density, when the dispersion circulates between an inlet (14) of the sealed chamber (8) and an outlet (15) of the sealed chamber (8). The outlet (15) of the sealed chamber (8) is coupled to an outlet tube (7) through which the dispersion returns to the reactor (11) in which same is being processed. The system also comprises a transmitter (9) connected to a sensor, which generates an output signal proportional to the density of the dispersion without gas bubbles by means of the sensor located inside the sealed chamber (8); and a processing unit (10) that generates an output signal (16) proportional to the concentration of solids in the gasless dispersion, as well as the pulp density. The invention further comprises a method for obtaining the concentration and density of the pulp.
-
-
-
-
-
-
-
-
-
搜索结果
1669 条记录 (耗时 0.027 秒)