子分类：
| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 241 | Sand stabilization method and apparatus | US10389692 | 2003-03-14 | US20040026342A1 | 2004-02-12 | Scott O'Brien; Denny Sprecher |
| A sand stabilization apparatus that preferably includes a first pump, a first separator fluidly connected to the first pump, a first attrition device fluidly connected to the first separator, a second pump fluidly connected to the first attrition device, a second separator fluidly connected to the second pump, and a dewatering device fluidly connected to the second separator. | ||||||
| 242 | Method of decontaminating soil | US10325536 | 2002-12-19 | US20030226788A1 | 2003-12-11 | Mario Bergeron |
| A method for decontaminating soil containing inorganic contaminants having a degree of liberation of at least 60%, comprising the steps of removing from a coarse fraction at least a portion of inorganic contaminants in particulate form contained therein with a jig to produce a treated coarse fraction, removing from an intermediate fraction at least a portion of inorganic contaminants in particulate form contained therein with a separator selected from the group consisting of a spiral and a classifier to produce a treated intermediate fraction, removing from a fine fraction at least a portion of inorganic contaminants in particulate form contained therein with a separator selected from the group consisting of a flotation cell and a multi-gravity separator to produce a treated fine fraction, whereby the combined treated coarse, intermediate and fine fractions are impoverished in inorganic contaminants. | ||||||
| 243 | Sea sand desalination method | US10093065 | 2002-03-08 | US20030168386A1 | 2003-09-11 | Hung-Yuan Lee |
| A sea sand desalination method includes: pumping sea sand to a first fresh water wash and a vibration sifter at the same time to purge foreign matter, salt, and coarse grains; blending in measuring tank at a sea sand-water ratio of 0.6:1; pouring the mixture into a heating tank and heating to boiling point; and sending it to a filtration machine for straining. The filtration machine filters the sea sand with hot water at its front section and a second fresh water wash at its rear section, and then discharges the hot water. The sea sand in the filtration machine is thereafter conveyed into a second vibration sifter and a third fresh water wash for purging. The post-wash fresh water after above-mentioned wash flows into a first and second waste water pool, respectively. Finally, the fully depurated sea sand is conveyed via a water wheel to a sand dumping site. | ||||||
| 244 | Method and an apparatus for managing contaminated material | US09655032 | 2000-09-03 | US06601787B1 | 2003-08-05 | Bertwin Langenecker |
| A method includes mixing a contaminated material with water in a wet-type mixing and grinding mill. The water is agitated. The Agitated water goes through the contaminated material. Larger particles are separated from smaller particles by an alternating and mechanical energy field acting in the mixing and grinding mill. An eluate is exposed to mechano-chemically activated sorbens material. The solids are separated from the water. | ||||||
| 245 | Washed sand drying and handling plant | US09380390 | 1999-08-27 | US06499493B1 | 2002-12-31 | Kevin Gerard Keenan |
| A washed sand drying and handling plant (100) includes a belt feed hopper (1), a conveyor belt (2), a sand rinsing unit (3), a dewatering apparatus (4), a radial conveyor (5) and a sand drying and handling apparatus (6). The sand drying and handling apparatus (6) includes four vesssels or tanks (7). Each tank (7) is generally cylindrically shaped and has a cone-shaped base. Sand is held in the tanks (7) for a predetermined amount of time sufficient to allow the sand to dry to the desired level by gravity. | ||||||
| 246 | Process for recovery of corn coarse fiber (pericarp) | US09345018 | 1999-07-02 | US06254914B1 | 2001-07-03 | Vijay Singh; Steven R. Eckhoff |
| A method of recovering corn coarse fiber by flotation, which features the use of a hydrocyclone, or other separating machinery, in which the specific gravity of the slurry contained therein has been increased to approximately 12-14 Baumé so that the corn coarse fiber is of a lighter density than the remainder of the slurry. Therefore, the corn coarse fiber can be separated from the remainder of the slurry because it floats to the top of the slurry. If the present pericarp recovery process is added to a modified dry-grind ethanol production line, a high value co-product (the pericarp) is added to the other co-products and the end-product of ethanol, which can all be sold, and the economic efficiency of the plant is increased. More specifically, the present invention provides a process for recovering corn coarse fiber including the steps of: soaking corn in water to loosen the attachments of various grain components therein to each other, degerminating the soaked corn to strip the corn coarse fiber and the germ away from the endosperm, recovering the germ, and recovering the corn coarse fiber by flotation. | ||||||
| 247 | Process for beneficiation of mixtures of mineral particles | US09293298 | 1999-04-16 | US06200377B1 | 2001-03-13 | Cesar I. Basilio; J. Michael Randolph |
| An improved process for the beneficiation of mixtures of mineral particles (such as kaolin clays) containing minerals which chelate with hydroxamates. The use of a silicon-containing compound in combination with a hydroxamate results in a more effective separation of minerals which chelate with the hydroxamate. | ||||||
| 248 | Process for beneficiating kaolin clays | US09045765 | 1998-03-20 | US06186335B1 | 2001-02-13 | Lee Ann Arrington-Webb; Robert A. Lowe; Chris B. Maxwell; Prakash B. Malla; Amy C. Semratedu; Cesar I. Basilio |
| A improved process for beneficiating kaolin clays to remove discoloring impurities is disclosed. The beneficiation of kaolin clay is improved by fractionating a kaolin clay starting material into a lower brightness first fraction having a majority of the discoloring impurities and a higher brightness second fraction with less impurities. The first fraction is then beneficiated (such as by flotation, selection flocculation, high intensity magnetic separation and/or leaching) to produce a kaolin clay product with improved optical properties. The first and second fractions may be combined to produce a product with improved optical properties. | ||||||
| 249 | Placer gold mining method, placer gold mining boat used in this method, placer gold digging and separating method and system therefor, and placer gold separating method and system therefor | US299004 | 1999-04-26 | US6138833A | 2000-10-31 | Tamisuke Matsufuji; Haruo Kojima |
| A placer gold separating method includes subjecting placer gold-and gold ore-containing sand and gravel layers accumulated on the bottom of the water of a river and placer gold- and gold ore-containing sand and gravel layers formed deep in the ground to excavation or suction excavation by utilizing a water pressure difference. This causes a mixture of the excavated or suction excavation placer gold- and gold ore-containing sand, gravel and water to flow horizontally by the action of a pressure fluid. The placer gold and gold ores are separated by utilizing a specific gravity difference while the mixture is flowing. A placer gold mining boat used to practice this method is provided thereon with a combination of a suction excavation component, a mixture transfer component, a component for separating placer gold by utilizing a specific gravity difference, and a component for discarding the remaining mixture from which the placer gold has been separated. A placer gold separating method is characterized by causing a mixture of placer gold and gold ores or pulverized gold ores and water to flow in a metallic cylinder. A magnetic field is generated by a magnetic field generating component provided on an outer circumferential surface of the metallic cylinder, and the placer gold in the mixture is magnetically deposited on the inner surface of the metallic cylinder, whereby the placer gold is separated. | ||||||
| 250 | Beneficiation of saline minerals | US737871 | 1997-07-03 | US6092665A | 2000-07-25 | Roland Schmidt; Dale L. Denham; Ralph B. Tacoma; Allen H. Moore; Allan L. Turner |
| A process is provided for recovering a saline mineral from an ore containing the saline mineral and impurities. In one aspect, the process generally includes the steps of separating a first portion of impurities from the ore by density separation, electrostatically separating a second portion of impurities from the ore, and magnetically separating a third portion of impurities from the ore. The process can further include the steps of crushing the ore and dividing the crushed ore into a plurality of size fractions before the above-referenced separating steps. In another aspect, the process includes the steps of calcining the ore and subsequently separating a first portion of impurities by density separation. Indirect heating may be utilized for the calcining process and, preferably, calcining gases are recycled and utilized for heating fluidizing another portion of ore. Water vapor may be condensed from the calcining gas and utilized for other purposes. | ||||||
| 251 | Apparatus for sorting and recombining minerals background of the invention | US352729 | 1999-07-13 | US6085912A | 2000-07-11 | Earl L. Hacking, Jr.; Thomas A. Swaninger |
| An apparatus for separating a mixture of mineral particles and recombining the mineral particles in an alterable, controlled fashion to create a plurality of products each having a predetermined, desired particle size distribution. | ||||||
| 252 | Mobile soil treatment apparatus and method | US43269 | 1998-08-05 | US6082548A | 2000-07-04 | Robert John Stephenson; Choom Jim Lim; Kok-Seng Lim |
| An apparatus for treating contaminated soil is disclosed. The apparatus includes a reactor vessel for holding a volume of water which is subdivided into a first chamber and a second chamber. The chambers are in fluid communication and are partially separated by a baffle. A soil conveyor is provided for conveying a supply of the contaminated soil to the first chamber. A gas supply directs a supply of pressurized gas into the first chamber, thereby creating a turbulent mixture of soil and water in the first chamber to effect segregation of the soil into a substantially small particle size first fraction and a substantially large particle size second fraction. The reactor vessel includes a first outlet located in a lower portion of the second chamber for withdrawing a slurry comprising the second soil fraction from the reactor vessel. The lower portion of the second chamber may be funnel-shaped to help direct the mixture of soil and water toward the first outlet. | ||||||
| 253 | Kaolin clays which are conditioned prior to removing impurities | US967070 | 1997-11-10 | US6007618A | 1999-12-28 | Joseph Allen Norris; Jorge L. Yordan |
| Kaolin clays are conditioned for the removal of colored titaniferous impurities by (A) first mixing the kaolin clay with a collector to condition the impurities, in the absence of a dispersant, but in the presence of sufficient water to yield a mixture having a solids content of at least 65 percent by weight and (B) then deflocculating the kaolin clay mixture at a pH of at least 4.0 with a dispersant in amounts sufficient to yield a kaolin clay slurry which is suitable for subsequent processing to remove colored titaniferous impurities. | ||||||
| 254 | Method for purification and production of saline minerals from trona | US967281 | 1997-11-07 | US5911959A | 1999-06-15 | John S. Wold; Wayne C. Hazen; Rudolph Pruszko; Roland Schmidt; Dale Lee Denham, Jr. |
| Disclosed are a variety of processes for the purification of saline minerals and in particular, trona. Some of the processes include a combination wet and dry recovery process which results in high recovery and purification at relatively low cost. The dry separation methods can include density separation, magnetic separation and electrostatic separation. Other processes include a modified slush process for the purification of calcined trona (sodium carbonate) by the introduction of anhydrous sodium carbonate into a saturated brine solution and subsequent separation of insoluble impurities. | ||||||
| 255 | Batch timer initialization for a sand classifying tank | US880702 | 1992-05-08 | US5818732A | 1998-10-06 | Louis A. Vanderwilt |
| A process to determine the optimal initial settings for a series of timers in a timed-contribution batch process, based on the feed material flow rate and the composition of the material. The optimum initial timer arrangement is that which results in the maximum possible product output in the shortest possible batch time; this condition is realized when all of the minimum product requirements, as determined by the minimum timer settings, are satisfied at approximately the same time. The process first monitors the accumulation rates of the various constituents of the feed material for a discrete period of time, during which time a sensing device records the individual accumulation rates. Values representing the accumulation rates are normalized to the value of the greatest accumulation rate. A multiplier is applied to the resulting ratios to determine the optimal initial minimum timer settings. The maximum timer settings may be arithmetically or algebraically derived from the minimum timer settings. This method allows the operator to make manual adjustments, which sacrifice a percentage of the product yield for the sake of product composition control, from the starting point of maximum production. | ||||||
| 256 | Method for beneficiating discolored kaolin to produce high brightness coating clay | US546398 | 1995-10-18 | US5685900A | 1997-11-11 | Jun Yuan; Ben E. Everett; Windell R. Andrews |
| A method for beneficiating a low brightness fine particle size discolored kaolin crude to produce a high brightness coating clay. By combining the two beneficiating techniques of selective flocculation and ozonation, a synergistic phenomena occurs and a clay product of superior brightness and whiteness can be obtained from fine discolored clays that cannot be achieved by beneficiation with either process singularly. By passing the flocced clay through ozonation, the flocculant polymer left in the clay can be completely destroyed. | ||||||
| 257 | Dynamic-mining system comprising hydrated multiple recovery sites and related methods | US392460 | 1995-02-21 | US5617955A | 1997-04-08 | Noel Tanner |
| A mining system and method for recovering gold and/or other heavy metals at multiple sites along a continuously hydrated ore processing route. The gold-bearing ore and primary or carrier water are dynamically and circuitously displaced to segregate the gold, and precipitate the gold particles into predetermined recovery sites along the flow path of the mix. The master stream of gold-sized ore-primary water mix is subdivided into several separate streams or substreams. The substreams are violent in nature, with one exception, and are typically contained in man-made canal-forming troughs having multiple recovery sites. Recovery sites comprise one or more drop slots. A downward draw caused by flow of secondary water in a conduit located below each slot enhances recovery. Each trough includes a dynamic segregation box having successive compartments across which a top layer of turbulent flow continuously occurs. Within each compartment a bottom layer of laminar flow takes place not only within each compartment, but from compartment-to-compartment. The laminar flow at the bottom of the trough is damped by yieldable blade elements, causing particles of gold accordingly to settle between the blades. A violent central, middle or immediate layer of revolving turbulent flow occurs within barrier-defined compartments between the top unobstructed turbulent layer and bottom laminar layer of trough flow. Within each compartment, eddy currents are enhanced by a whipping action caused by yieldable flaps or flap segments. | ||||||
| 258 | Process for removing metal contaminants from soils | US54937 | 1993-04-26 | US5599372A | 1997-02-04 | Luis W. Pommier |
| A multi-step process for treating soil that has become contaminated with heavy metals is disclosed. The process may be conducted on the site where contaminated soil is present and allows replacement of the original contaminated soil with decontaminated soil, thus avoiding the need to transport contaminated soil. The contaminated soil is separated and analyzed to determine which soil fractions contain metal contaminants, further processed to isolate the contaminants and treated with oxidizing agents. The contaminating metals are removed from the soil mixture by chelation. Decontaminated soil is replaced at the site and the metals that are removed from the soil are recovered and recycled. | ||||||
| 259 | Dynamic mining system comprsing hydrated multiple recovery sites and related methods | US212745 | 1994-03-14 | US5544756A | 1996-08-13 | Noel Tanner |
| A mining system and related methods for recovering gold and/or other heavy metals at multiple sites along a continuously hydrated ore processing route. The gold-bearing ore and primary or carrier water are dynamically and circuitously displaced to segregate the gold, and precipitate the gold particles into predetermined recovery sites along the flow path of the mix. Boil box recovery sites are selectively provided for recovery of nuggets and smaller gold particles. Secondary water churns and disrupts the primary carrier flow of the mix through each boil box. The master stream of gold-sized ore-primary water mix is subdivided into several separate streams or substreams. The sub streams are violent in nature, with one exception, and are typically contained in man-made canal-forming troughs or multiple recovery sites. Recovery sites have one or more drop slots. A downward draw caused by flow of secondary water in a conduit located below each slot enhances recovery. | ||||||
| 260 | Process for wet regeneration of granular bulk materials charged with impurities and pollutants | US266978 | 1994-06-27 | US5540270A | 1996-07-30 | Johannes Grote; Ulrich Thiem; Terry D. Skidmore |
| Disclosed is a process for treatment of bulk materials which are loaded with impurities and pollutants. Preferably the process treats bulk material from the category of clay-bonded used foundry sand. Depending on the provenance of the sand, composition of the sand, and the type of binders employed, this sand is subjected to a regeneration process including dry mechanical pretreatment and wet attrition treatment to produce regenerated sand and fine grain-containing waste water. The fine grain-containing waste water is subjected to a multiple-stage waste water treatment based on agglomeration processes after adjustment of the pH level of the waste water. | ||||||
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