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| Number | Title | Issue Date |
| 5578198 | Device for automatic regulation of the process of separating froth concentrate from gangue in a floatation machine The automatic regulator device comprises a channel for measuring the level and density of pulp in the chamber of a floatation machine, in which two bubbling pipes are in communication with a differential pressure pickup connected to the input of a frother... | 11/26/1996 |
| 5368166 | Device for automatically controlling the process of separating froth concentrate from gangue in a floatation machine The automatic control device comprises a channel used to measure the level and density of pulp in a chamber of a floatation machine, in which two bubbling tubes communicate with a differential pressure transducer connected to the input of a frother flow c... | 11/29/1994 |
| 5230797 | Centrifuge bowl with attached cast inner liner A centrifuge bowl of the type having a shell including a peripheral wall and a cast inner liner attached to the inside surface of the peripheral wall is modified by the provision of a plurality of punched channel portions which extend inwardly into the bo... | 07/27/1993 |
| 5227047 | Wet process for fly ash beneficiation A wet process for the beneficiation of a fly ash by-product has the following steps: a) forming a slurry mixture of a fly ash material and a liquid; b) gravitationally separating and collecting a first material fraction of the fly ash having a density les... | 07/13/1993 |
| 5205926 | Froth flotation machine The invention relates to an improved flotation cell design for the mining industry. The flotation cell includes a cylindrical froth flotation unit and a unique hexagonal overflow froth launder. The unique design optimizes the froth flotation process and a... | 04/27/1993 |
| 5203965 | Utilization of sawdust for pulp production A screening system incorporated into the system of sawdust collection for paper producing pulp. An upper and lower range of the sawdust particles is designated as between smaller, strength-inhibiting size particles and larger strength-enhancing size parti... | 04/20/1993 |
| 5202019 | Device for the mechanical separation of insoluble solids from a liquid containing said solids One has aimed at providing a simple, reliable and efficient purification device for the mechanical purification of sewage. At this end, the sewage purification device (1) comprises substantially a strainer pipe (2), which may be designed to be coupled to ... | 04/13/1993 |
| 5192423 | Apparatus and method for separation of wet particles An apparatus and a process for separating particles in a slurry based on different physical, magnetic and/or chemical properties of the particles, the slurry including a mixture of solid particles and/or liqid particles which are immiscible in the slurry.... | 03/09/1993 |
| 5192422 | Oil shale beneficiation process using a spiral separator A stream containing kerogen-rich and mineral-rich oil shale particles flow in a downward helical course such that the stream is confined in a manner to give the stream an outer and upper side having a first depth and comprising a substantial amount of sai... | 03/09/1993 |
| 5188726 | Method of operating a plurality of minerals separation flotation cells A method of operating a plurality of minerals separation flotation cells (1,2) each having a feed inlet (9,14) a values outlet (11) and a gangue outlet (12,15), and each flotation cell being located at substantially the same level. A feed box (3) is locat... | 02/23/1993 |
| 5186834 | Scraper filter system A scraper filter system, which comprises a screw-formed spiral impeller within a cylindrical filter element, and a scraper in the groove formed along the spiral end of the impeller for engagement with the internal surface of the filter element for scrapin... | 02/16/1993 |
| 5186820 | Process for separating bitumen from tar sands A process for separating bitumen from tar sands, which comprises: a) agitating a mixture of tar sand with substantially coarse clean sand at ambient or below ambient temperature in the presence of water, so as to mechanically shear bitumen and enhance the... | 02/16/1993 |
| 5183568 | Self-cleaning strainer A self-cleaning strainer comprises a vertically disposed housing which contains a rotatable strainer basket. The housing has an open top, closed by a closure plate, an inlet adjacent the top of the housing and an outlet adjacent a closed bottom of the hou... | 02/02/1993 |
| 5182014 | Method and apparatus for increasing flotation cell recovery and grade of complex copper-containing ores Micron sized gas bubbles produced by electrolysis (e.g., oxygen and/or hydrogen gas bubbles by the electrolysis of water) are introduced into a flotation cell which is also provided with larger bubbles produced by sparging a gas such as air into the flota... | 01/26/1993 |
| 5182039 | Synergistic fluorinated ore flotation aids Flotation aids, for use in ore flotation and beneficiation processes, comprising polyamines in the presence of fluorosubstituted organic compounds, either mixed therewith or at least partially-neutralized thereby, such that the resulting compositions sepa... | 01/26/1993 |
| 5180511 | Flotation aid and process for removal of impurities from silicate minerals A novel flotation aid for use in the flotation removal of contaminates or impurities from mineral slurries. The flotation aid is an alkali aluminate compound. The flotation aid may be incorporated into a flotation reagent system that includes a chemical c... | 01/19/1993 |
| 5178758 | Biochemical water filter A biochemical water filter comprising a cylindrical shell, a solar light tube and several ultraviolet tubes disposed in the shell so as to cultivate nitric bacteria to get rid of harmful bacteria with help of the light tubes for purifying water used in an... | 01/12/1993 |
| 5176822 | Flotation machine for deinking A stock liquid is made to flow into a cell through a stock inlet at one end of the cell. The stock liquid is admixed with air bubbles from an air bubble generating device disposed at a lower portion of the cell and extending between the opposite end plate... | 01/05/1993 |
| 5176835 | Apparatus for continuous purification of liquids An apparatus and method for the continuous clarifying of liquids containing suspended solid substances comprises a flotation cell with a liquid head height of less than 1 meter, with a ratio between the liquid head and the cell diameter comprised between ... | 01/05/1993 |
| 5173179 | Removal of contaminants and recovery of metals from waste solutions Apparatus for removal of a desired material from a liquid is described, in which the liquid is cycled through a plurality of liquid treatment containers in a first direction and brought into countercurrent contact with a medium for recovery of the desired... | 12/22/1992 |
| 5173177 | Anti-plugging adjustable orifice for gas sparged hydrocyclone In a hydrocyclone, particularly for deinking of paper pulp, a movable generally cylindrical plug is utilized to define an annular space near the accepts withdrawal conduit to effect release of obstructions should the annular space become clogged. The plug... | 12/22/1992 |
| 5173176 | Dialkylated aryl monosulfonate collectors useful in the flotation of minerals Dialkylated aryl monosulfonic acids or salts thereof or their mixture are useful as collectors in the flotation of minerals, particularly oxide minerals. Particularly useful are those sulfonic acids or salts in which the alkyl substituents are unsymmetric... | 12/22/1992 |
| 5171428 | Flotation separation of arsenopyrite from pyrite Arsenopyrite is separated from a mixture with pyrite by contacting the mixture with a sulfitic agent providing HSO3- ions at elevated temperature and pH below about 8 for a period sufficient to impart a selective depression property... | 12/15/1992 |
| 5171427 | Sulfonated and carboxylate collector compositions useful in the flotation of minerals Dialkylated aryl sulfonic acids or salts thereof or their mixture are useful as collectors in the flotation of minerals, particularly oxide minerals. Collector compositions comprising these salts and oleic acid are particularly useful in hard water. Colle... | 12/15/1992 |
| 5167805 | Pool skimmer A pool skimmer of the invention includes a pair of rectangular frames hinged together along adjacent first short frame members by a plastic hinge member extending substantially the length of the short frame members, a pair of poles attached at an intermed... | 12/01/1992 |
| 5167806 | Gas dissolving and releasing liquid treatment system An improved gas dissolving and releasing liquid treatment system involving the use of multi-stages gas dissolving pressure vessel and the use of a pressurized water release assembly and an open vessel is described. The gas dissolving and releasing liquid ... | 12/01/1992 |
| 5167798 | Apparatus and process for the separation of hydrophobic and hydrophilic particles using microbubble column flotation together with a process and apparatus for generation of microbubbles A method and apparatus are disclosed for the microbubble flotation separation of very fine and coarse particles, especially coal and minerals, so as to produce high purity and high recovery efficiency. This is accomplished through the use of a flotation c... | 12/01/1992 |
| 5160610 | Radial header for dissolved air flotation systems A radial mixing header for use with apparatus that removes solids from a liquid by dissolved air flotation (DAF). The header comprises a par of concentric pipes circumscribed by a concentric mixing chamber having a tangential port for introduction of the ... | 11/03/1992 |
| 5160616 | Filtering apparatus Filtering apparatus for the separation of microparticles such as bacteria has two planar sheets each with an array of laser drilled or etched pores. One or both of the sheets can be displaced relative to the other under feedback control to bring the pores... | 11/03/1992 |
| 5158678 | Water clarification method and apparatus This invention pertains to a multi-stage separator vessel through which the to-be-cleaned fluid flows. Aeration assemblies within the inner cells disperse micro-fine gas bubbles into the fluid for cleaning purposes. Additionally, the inlet piping contains... | 10/27/1992 |
| 5156778 | Mixing device A device for use in the mixing of fluids, e.g. the gasification of liquids, comprises an elongate member including an internal passage; and, mounted on the elongate member via radials arms, one or more venturi members each having a convergent-divergent du... | 10/20/1992 |
| 5156735 | Self-cleaning filter particularly for high-viscosity pasty fluids The self-cleaning filter particularly for high-viscosity pasty fluids has a fixed body having a substantially cylindrical elongated chamber in which a filtration drum is supported and defines a central region, at one end of which there is an inlet for the... | 10/20/1992 |
| 5152891 | Self-cleaning strainer A backwash strainer including a body, a strainer element having an inlet side contained in the body, and a space defined between the body and the strainer element. The body includes an inlet to the strainer element and an outlet from the annular space. A ... | 10/06/1992 |
| 5151177 | Method and apparatus for dissolved air flotation with aeration A method and apparatus for aeration of waste water in a dissolved air flotation waste water treatment system includes a container for receiving and retaining waste water for settling of heavy particles and flotation of light particles to the surface of th... | 09/29/1992 |
| 5151188 | Supercritical fluid extraction enhancer A method for enhancing supercritical fluid extraction of sample matrices which contain water. The method involves mixing the samples with an extraction enhancing aid comprising flux-calcined diatomaceous earth which increases the permeability of the sampl... | 09/29/1992 |
| 5147528 | Phosphate beneficiation process A process for the froth flotation separation of phosphate containing minerals by the use of a new collector agent is described. The new phosphate collector agent is prepared by mixing a fatty acid, tall oil pitch, an amine, and optionally sarcosine with f... | 09/15/1992 |
| 5147046 | Gravity separation method using iron powder A gravity separation method using iron powder is employed for subjecting a metal or ore to sink-float separation using a specific gravity liquid in which the iron powder is mixed and suspended. This gravity separation method comprises mixing and suspendin... | 09/15/1992 |
| 5147572 | Flotation composition using a mixture of collectors The present invention relates to improved flotation composition comprising a mixture of (A) at least one metal salt of a phosphorus acid represented by the Formula: ##STR1## wherein each R1 is independently a hydrocarbyl, hydrocarbyloxy of... | 09/15/1992 |
| 5143599 | Process for refining kaolin A process is disclosed for producing high brightness kaolin from ore containing silica, other types of clays, minerals such as ilmenite micas, feldspars and various metal silicates as well as organic matter. The process consists of sizing, a double floata... | 09/01/1992 |
| 5143600 | Apparatus for feeding air into a flotation cell The invention relates to an apparatus for feeding air into a flotation cell provided with a rotor and a stator. According to the method and apparatus of the present invention, air is fed into the intermediate space formed in between the rotor and stator c... | 09/01/1992 |
