WO1990013678A1 - Procede et appareil pour recuperer des metaux precieux contenus dans des scories, des tailings et d'autres materiaux - Google Patents

Procede et appareil pour recuperer des metaux precieux contenus dans des scories, des tailings et d'autres materiaux Download PDF

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Publication number
WO1990013678A1
WO1990013678A1 PCT/US1990/002545 US9002545W WO9013678A1 WO 1990013678 A1 WO1990013678 A1 WO 1990013678A1 US 9002545 W US9002545 W US 9002545W WO 9013678 A1 WO9013678 A1 WO 9013678A1
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WIPO (PCT)
Prior art keywords
source
roasting
temperature
organic material
source material
Prior art date
Application number
PCT/US1990/002545
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English (en)
Inventor
Mark I. Farber
Original Assignee
Farber Mark I
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Farber Mark I filed Critical Farber Mark I
Publication of WO1990013678A1 publication Critical patent/WO1990013678A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B11/00—Obtaining noble metals
    • C22B11/02—Obtaining noble metals by dry processes
    • C22B11/021—Recovery of noble metals from waste materials
    • C22B11/023—Recovery of noble metals from waste materials from pyrometallurgical residues, e.g. from ashes, dross, flue dust, mud, skim, slag, sludge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J19/12—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electromagnetic waves
    • B01J19/122—Incoherent waves
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/04—Working-up slag
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Definitions

  • the present invention concerns a process for the improved recovery of precious metals and other desired matter from slag, tailings and other source materials.
  • the invention provides a recovery method which minimizes the use of harmful chemicals, in certain instances the invention may minimize the potential for harmful materials to escape into the environment during the roasting phase, and in certain instances the invention may make harmful components of the source material safer to handle.
  • the present invention is particularly advantageous in the economical removal of harmful matter and in economical extraction of desired matter, such as, precious metals, primarily gold, silver and platinum group metals, from source materials, such as, slag, tailings, etc.
  • desired matter such as, precious metals, primarily gold, silver and platinum group metals
  • source materials such as, slag, tailings, etc.
  • Prior art methods to the extent applicable, are uneconomical or not as economical as the present invention.
  • source materials containing the precious metals are formulated into a composition comprising the material, water and a combustible nitrogen material and the composition is then roasted in the presence of sodium borohydride and a metal salt to a temperature from about 600"F to about 800°F.
  • a suitable amount of a suitable fluxing agent comprising sodium cyanotrihydridoborate and a suitable mothering metal are added to the roasted material and the entire mixture is heated in a rotary kiln to a temperature from about 1200°F to about 2000 ⁇ F.
  • the molten metal containing the precious metals is separated from the waste slag and recovered from the kiln.
  • the source material containing the precious metals is ground or crushed to workable size and thoroughly frozen before being roasted.
  • the source material may also be beneficially irradiated with electromagnetic radiation, generally from just beyond either or both ends of the visual portion of the electromagnetic spectrum, during the freezing stage.
  • the source material may be irradiated without freezing prior to roasting. Additionally, to enhance yield combustible nitrogen materials may be added prior to further processing.
  • the source material containing the precious metals with or without prior processing is roasted in such a manner that substantially all matter which it is desired to recapture and which is ejected or volatilized from the source material being roasted will pass through an organic material preconditioned to readily attract and/or capture or adsorb desired ejected and volatilized matter.
  • the organic material may be preconditioned to attract and capture precious metals, in which case, the organic material with its load of captured precious metals will be further processed to recover the precious metals.
  • the invention also concerns a freezing and irradiation chamber, a roaster and the use of a sensitized organic material which are useful in practicing the methods of the invention.
  • the invention further concerns the removal of harmful matter from source materials containing them.
  • the process of the invention can be used on many materials containing precious metals or harmful substances.
  • the methods of the invention are particularly advantageous in extracting harmful materials and precious metals, primarily gold, silver, and platinum group metals, from source materials, including, previously worked ores such as slag dumps, flux piles, tailings, and slime dumps, or ores containing a low precious metal concentration; however, they may also be used on recently mined ores such as head ore and concentrates or placer deposits.
  • the source material is first reduced to the proper processing size, that is, it is pre-sized, by, for example, grinding or crushing, in which case conventional ore processing methods using conventional machines such as a jaw crusher, rod mill or ball mill may be used.
  • the proper processing size of the particles depends upon the source material. For example, generally, it is preferred that the more dense materials should be ground or crushed to a smaller particle size than less dense materials.
  • the source material After the source material has been pre-sized, it is moistened with water. Enough water should be used so as to enable the source material to be thoroughly moistened. The water used for moistening should be reasonably pure and should not contain significant amounts of any contaminants or additives. It is preferred that distilled, deionized water is used. In a preferred embodiment of the invention the pre-sized source material is placed on a conveyor belt and is moistened by spraying with water. However, runoff water may be used after suitable recycling, for example to remove detrimental contaminants, if any.
  • the moistened source material is then frozen, i.e., at some point in time every portion of the material should be at or lower than about 32"F.
  • the pre-sized material is transported on top of a conveyor belt into a freezing chamber and is transported by the conveyor through the freezing chamber at a rate so as to insure that all the material has been completely frozen before it exits the chamber.
  • electromagnetic radiation generally from just beyond either or both ends of the visual portion of the electromagnetic spectrum, i.e., with ultraviolet and/or infrared radiation.
  • Commercially available heat lamp bulbs (in the case of infrared radiation) or sun lamp bulbs (in the case of ultraviolet radiation) can be used as the source of the radiation.
  • the need for irradiation, the type, intensity and duration of irradiation will depend upon the source material being irradiated.
  • Source material which contains more than a trace quantity of sulfides may beneficially be treated with ultraviolet ("UV") radiation.
  • UV ultraviolet
  • a trace quantity is defined as less than about one tenth of one percent by weight.
  • IR infrared
  • arsenic and sulfides are present in the source material, it is generally not treated with UV or IR radiation during the freezing stage.
  • UV and IR radiation sources are located within the freezing chamber and are situated relative to the conveyor belt so that the material is subjected to the appropriate radiation as it progresses through the freezing chamber.
  • a combustible nitrogen composition is applied to the surface of the material.
  • Any nitrogen based combustible material such as nitrogen based organic fertilizer may be used.
  • a commercially available combustible nitrogen composition which has been found to be successfully utilized in the present invention is Malorganite ® a fertilizer manufactured by Milwaukee Metro, of Madison, Wisconsin.
  • the combustible nitrogen material is distributed on the source material soon after the conveyor belt bearing the material emerges from the freezing chamber.
  • the combustible nitrogen material is contained in an application apparatus positioned above the conveyor belt and on the route between the freezing chamber and a roasting apparatus. If, prior to roasting, the source material appears to be dry additional water should generally be added.
  • the object of roasting is the expulsion of the sulphur, arsenic, antimony and other volatile substances existing in the source material, and the oxidation of the metals left behind.
  • the source material is heated in a furnace, through which a current of air is passed.
  • roasting has been used in the past as a preliminary to application of the well known cyanide process for the recovery of gold.
  • roasting was used to reduce the presence of sulphur compounds in the source material.
  • the cyanide process consists in attacking gold ores with dilute aqueous solutions containing less than one percent of alkaline cyanide, a slight excess of sodium hydroxide or lime being added to ores rendered acid by the oxidation of pyrite, and then precipitating the precious metals with zinc.
  • Certain, compounds, such as those containing sulfides or sulfates, referred to as "cyanicides” are deleterious to the cyanide process, and are removed, e.g., by roasting, prior to the application of the cyanide process.
  • this process may be used to remove and capture or adsorb or otherwise render less harmful, specific harmful constituents of the source material.
  • the roasting process has long been used to drive off sulphur compounds and arsenic compounds.
  • the sulphur compounds and arsenic compounds which are driven off the source material during the roasting stage may be captured by the sensitized organic material and thereby rendered less harmful to the environment.
  • other harmful materials driven from the source material during roasting may also be captured by the sensitized organic material.
  • the organic material which is to be sensitized can be any carbon based material such as coal, charcoal, perlite, zeolite or vermiculite.
  • the inventor has found Ammo-Carb ® organic material supplied commercially by Astro Chemical, Co. of Springfield, Massachusetts, to be satisfactory.
  • the sensitizing agents will generally vary according to the material being roasted and the escaping matter which is to be captured or rendered less harmful.
  • certain generalizations concerning appropriate sensitized organic materials to enhance recovery of precious metals can be made and successfully utilized.
  • the organic material In order to sensitize the organic material it is first moisturized by applying reasonably pure and contaminant-free water. The moistened material is then treated, by soaking or spraying with an aqueous acidic solution, no more than 30 per cent normal, e.g. acetic acid in water, i.e., vinegar, until the organic material is thoroughly covered with the acidic solution. A small amount of sodium borohydride should generally also be added to the organic material.
  • an aqueous solution of a metal salt e.g. an aqueous solution of silver nitrate may be applied to the organic material.
  • the sensitized organic material may be recycled through the roaster until it becomes saturated with metal and can no longer economically capture or render less harmful desired matter escaping form the material being roasted on the first conveyor belt.
  • the organic material is recycling through the roaster it should generally be periodically re- moistened, however, usually no other additional resensitizing is required.
  • the organic material is saturated it is processed in order to recover the desired matter, for example, any precious metals that escaped during the roasting process and which were captured by the sensitized organic material.
  • the pre-processed material which also contains some water and the combustible nitrogen source is then roasted for about thirty to forty five minutes at a temperature from about 600°F. to about 800"F., and preferably 800°F, while in close proximity to the sensitized organic material.
  • the sensitized organic material may be placed directly over the material being processed, e.g., by resting on a second conveyor belt which is porous with respect to the ejecta or volatilized matter which is desired to pass through and about the sensitized organic material.
  • a second conveyor belt which is porous with respect to the ejecta or volatilized matter which is desired to pass through and about the sensitized organic material.
  • the separation of the material being roasted from the sensitized organic material be such that the escaping matter will pass through the sensitized organic material, but the material being roasted will not physically mix with the sensitized organic material.
  • the material being processed progresses through the roaster on a first conveyor belt while at the same time the sensitized organic material is also passing on a second permeable conveyor belt positioned above and in relatively close proximity to the first conveyor.
  • the material is roasted until it is completely dry and all the nitrogen material is combusted.
  • the roasting process as described above will have the additional advantageous effect of driving off harmful matter such as heavy metals, arsenic, sulfides, etc. from the material being processed.
  • harmful matter such as heavy metals, arsenic, sulfides, etc.
  • suitable adjustment to the sensitizing agents used for sensitizing the organic material such harmful matter which escapes from the material will be captured or changed in form to a less harmful material.
  • chlorine in a gaseous form may be given off during the roasting process.
  • chlorine may also be set free by the action of sulfuric anhydride on salt, while the presence of water vapor induces the formation of hydrochloric acid gas.
  • the chlorine gas and hydrochloric acid gas driven off the source material during the roasting stage, pass through and about the sensitized organic material.
  • the chloride gas and hydrochloric acid gases may then react with the sensitized organic material and may thereby be reduced for example to sodium chloride and sodium sulphate.
  • the sensitized organic material leaves the roaster it is analyzed to ascertain whether or not it is saturated with metals.
  • saturated means with respect to this process that about one percent or more of the surface area of the sensitized organic material is covered with metallic matter. If it is saturated the organic matter is burned off leaving metal dust. If it is not saturated it is recycled through the roasting stage after first moisturizing again with water.
  • the roaster suitable fluxing and mothering agents are then added to the roasted material.
  • the amount and identity of the fluxing and mothering agents to be added will in a large part be determined by the composition of the material being processed and the matter desired to be recovered.
  • oxidants such as, the Oxone ® oxidant manufactured by Dow Chemical Company
  • fluorides such as the Flourspar ® calcium fluoride composition manufactured by DuPont
  • chlorides such as the Nitre ® nitrogen compound manufactured by Seder Chemical Co., of Vicksburg, Mississippi
  • sodium compounds such as, calcium fluoride, potassium nitrate, soda ash, boric acid, sodium cyanotrihydridoborate
  • sodium cyanotrihydridoborate is not similar to the use of cyanide in the cyanide process referred to above.
  • the present invention does not use an aqueous solution of a cyanide compound, moreover, the present invention uses an insignificant quantity of cyanide compound as compared to the quantity necessary for the cyanide process.
  • soda ash and boric acid should always be used.
  • the source material has high amounts of arsenic (e.g., greater than about ten parts per million)
  • a small amount of sodium cyanotrihydridoborate e.g., about one ounce per ton
  • the source material e.g. the pH of an aqueous solution of source material or the viscosity of a hot melt of the material
  • the source material may be pulverized, water added and the pH of the resulting aqueous solution ascertained.
  • an acidic pH suggests that additional basic compounds, e.g., soda ash, be added
  • an alkaline pH suggests that additional acidic compounds, e.g., boric acid, be added. If the pH is neutral, then no additional acidic or basic compounds need be added, however, as described earlier an initial quantity of both boric acid and soda ash are generally always used in the fluxing media.
  • the material for post-roasting processing be capable of flowing easily under the process conditions. If the material being processed is very viscous during a test melt, the addition of clays, such as bentonite or dolomite, may decrease the viscosity and thereby enhance the final yield.
  • clays such as bentonite or dolomite
  • an appropriate metal mothering agent should be added to the mixture of fluxing agents and material.
  • the mothering agents to be used will depend upon the material being processed and the matter for which recovery is to be maximized. For example, if the recovery of gold is to be enhanced, copper oxide may be beneficially added to the mixture as a mothering agent. It has been found that the addition of about five percent by weight of copper oxide and silver oxide will enhance the recovery of gold up until the point is reached wherein the gold content of the dore 1 exceeds about forty percent by weight.
  • Other mothering agents include tin and lead oxide. In one embodiment of the invention the mothering metal comprises 90 lbs. of copper oxide and 10 lbs. of silver oxide. The mixture of the material, flux and mothering agent is then heated with agitation, for example in a rotary kiln.
  • the mixture is heated to a temperature from about 1000°F. to about 3000°F., preferably about 2000°F, and the resulting metal product containing precious metals is removed.
  • a rotary kiln is used and the slag and metal shot product are removed from the kiln either continuously or periodically.
  • the metal product or shot is further refined to isolate the non-platinous precious metals that are to be recovered. According to one embodiment of the present invention, this may be accomplished by analyzing the metal shot for precious metal content and based on the analysis and in a recycling process adding more mother materials and then heating the mixture with agitation in the same manner as done initially, or recovering the precious metals from the shot.
  • the fluxed material poured from the kiln i.e., the slag
  • is pulverized for example in a crusher, and then analyzed. Initially, the pulverized material is mixed with water and the resulting aqueous solution is analyzed and the pH determined. If the pH is not neutral, materials tending to drive the solution to a neutral pH should generally be added.
  • the amount of platinum group metals present in the slag is also initially determined, e.g., by atomic absorption or fire assay. If the level of platinum group metals present is below economical recovery amounts the slag may be used for other purposes. For example, the slag may be poured into bricks and used for construction purposes, or used as a concrete or asphalt filler, or added to materials used for sandblasting, or used for ballast on ships, etc. However, if platinum group metals are present in economical recovery amounts the material will generally be further refined to recover these metals. Further, a high percentage of platinum group metals suggests that additional soda ash and/or a tin-lead compound and/or other mothering agents may be beneficially added.
  • the next step is to heat and mix the slag, pH altering agents and the mothering agents together.
  • the pH altering agents and the mother agents remain the same for an entire lot of similar source material.
  • the mixture should be heated at a temperature greater than about 2000°F and less than about 3500°F, preferably between about 2800°F and about 3000°F.
  • the slag is poured off, e.g, into bricks, and the platinum group metals are recovered from the metal shot.
  • the slag produced by this invention may be used in the production of construction materials and other products such as bricks, etc.
  • a 100 pound sample of slag source material was processed according to an embodiment of the present invention.
  • the slag was processed to enhance the recovery of silver and gold.
  • a fire assay was performed on the slag before and after the processing.
  • the slag was preconditioned. It was ground to approximately pea size particles, placed into five separate doubled-up plastic garbage bags and moisturized with water. The bags were then placed in a standard upright freezer overnight. The bags were emptied into a crucible, about a cup of Malorganite ® nitrogen composition was added to the slag and the contents of the crucible mixed.
  • the organic material was sensitized.
  • a mixing vessel to about forty (40) pounds of Ammo Carb ® organic material, enough vinegar was poured in so as to completely cover the Ammo Carb ® organic material.
  • about a gram of sodium borohydride was added, the contents of the vessel mixed and the excess liquid poured off.
  • about 6 to 12 pieces of unexposed X-ray film were dipped in a five gallon container, containing about two gallons of Kodak brand photographic fixer, to obtain the silver salt, e.g., silver nitrate. After dipping, the liquid solution from the five gallon container was then poured into the vessel containing the Ammo Carb ® organic material , etc. , and the contents mixed.
  • the liquid from the vessel was poured off, and the now sensitized organic material was placed in a heat resistant porous bag, manufactured by Joe Slater, Inc. of Teterboro, New Jersey.
  • the roasting step The porous bag containing the sensitized organic material was placed on top of the preconditioned slag in the crucible.
  • the crucible was then heated in a furnace at a temperature of about 800°F for approximately 45 minutes.
  • the bag of sensitized organic material was removed and separately tested positive for the presence of gold.
  • the roasted material was poured off and allowed to cool.
  • Preparing the fluxing agent The following ingredients were mixed together to form the fluxing agent: 2 pounds of soda ash; 1 1/2 pounds of boric acid, a teaspoon of Flourspar ® calcium fluoride composition; and about 1/4 gram of sodium cyanotrihydridoborate.
  • the fluxing agent was then mixed with the roasted material providing a roasting material/ luxing agent mixture.
  • the mothering agent used was about 10 pounds of copper.
  • roasted material/fluxing agent mixture was then mixed with about 1/4 of the mothering agent in a smaller crucible.
  • the smaller crucible was heated at about 2100°F until the contents were molten.
  • the molten contents were poured into a mold and allowed to cool.
  • the mold was tipped over causing the slag and "metal" portion to separate.
  • the metal portion was then placed back in the smaller crucible, another 1/4 of the roasted material/fluxing agent mixture and another 1/4 of the mothering metal were added.
  • the crucible was heated at 2100°F until the contents were molten. This cycle was continued until all of the roasted material/fluxing agent mixture had been heated with the mothering agent.

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  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
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  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Electromagnetism (AREA)
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Abstract

Des procédés et un appareil permettent d'extraire des métaux précieux et des matières toxiques contenus dans des matériaux tels que des scories. Selon les procédés, le matériau préfragmenté est congelé, exposé à des rayonnements ultraviolets et infrarouges, calciné en présence du boro-hydrure de sodium, d'un sel métallique, d'eau et d'un matériau azoté combustible; puis un mélange du matériau, d'un fondant comprenant un cyanotrihydridoborate de sodium et d'un métal générateur est chauffé dans un four.
PCT/US1990/002545 1989-05-08 1990-05-04 Procede et appareil pour recuperer des metaux precieux contenus dans des scories, des tailings et d'autres materiaux WO1990013678A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US34879789A 1989-05-08 1989-05-08
US348,797 1989-05-08

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WO1990013678A1 true WO1990013678A1 (fr) 1990-11-15

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AU (1) AU5554190A (fr)
WO (1) WO1990013678A1 (fr)
ZA (1) ZA903449B (fr)

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US5869527A (en) * 1995-12-29 1999-02-09 Alteon Inc. 6-(N-carboxymethylamino)caproate, salts thereof and methods of use therefor
AT406273B (de) * 1997-10-23 2000-03-27 Prior Eng Ag Verfahren zum aufschliessen von edelmetallhaltigen materialien
US6441156B1 (en) 1998-12-30 2002-08-27 The United States Of America As Represented By The Department Of Health And Human Services Calcium channel compositions and methods of use thereof
US6573094B1 (en) 1997-10-16 2003-06-03 Baylor College Of Medicine F-box genes and proteins
US6649654B1 (en) 1999-11-23 2003-11-18 The Regents Of The University Of California Methods for identifying and using IKK inhibitors
US6710036B2 (en) 1997-07-25 2004-03-23 Avigen, Inc. Induction of immune response to antigens expressed by recombinant adeno-associated virus
WO2004043237A2 (fr) 2002-11-08 2004-05-27 Barnes-Jewish Hospital Dosages du decouplage de la synthese et de la degradation du collagene
US6875606B1 (en) 1997-10-23 2005-04-05 The United States Of America As Represented By The Department Of Veterans Affairs Human α-7 nicotinic receptor promoter
US7105333B2 (en) 2001-03-27 2006-09-12 Deadreon Corporation Nucleic acid molecules encoding a transmembrane serine protease 9, the encoded polypeptides and methods based thereon
US20060231171A1 (en) * 2005-04-19 2006-10-19 Davis Samuel A Method for adding boron to metal alloys
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US7968308B2 (en) 2004-10-22 2011-06-28 Danisco Us Inc. Isolating human antibodies
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US9169328B2 (en) 2010-03-26 2015-10-27 Memorial Sloan Kettering Cancer Center Antibodies to MUC16 and methods of use thereof
US9297813B2 (en) 2010-11-11 2016-03-29 Agency For Science, Technology And Research Targeting metabolic enzymes in human cancer
US10420829B2 (en) 2006-01-16 2019-09-24 The United States Of America, As Represented By The Secretary, Department Of Health & Human Services Chlamydia vaccine
US10537636B2 (en) 2017-02-06 2020-01-21 Oncoquest Inc. Treatment of cancer with therapeutic monoclonal antibody specific for a tumor associated antigen and an immune adjuvant
US11066480B2 (en) 2015-03-17 2021-07-20 Memorial Sloan Kettering Cancer Center Anti-MUC16 antibodies and uses thereof
US11439649B2 (en) 2018-02-21 2022-09-13 AI Therapeutics, Inc. Combination therapy with apilimod and glutamatergic agents

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4608083A (en) * 1984-09-28 1986-08-26 Boliden Aktiebolag Method for recovering the valuable metal content of contaminated copper raw material
US4695317A (en) * 1985-01-31 1987-09-22 Sumitomo Metal Mining Company Limited Method of treating silicate ore containing gold and silver
JPS646684A (en) * 1987-06-26 1989-01-11 Matsushita Refrigeration Refrigerator with thawing chamber
JPS6463092A (en) * 1987-09-02 1989-03-09 Konishiroku Photo Ind Treating device for waste liquid of photographic processing
US4814003A (en) * 1988-01-29 1989-03-21 Bergner Richard M Apparatus and method for extraction and recovery of precious metal using coherent radiation
US4867052A (en) * 1985-12-16 1989-09-19 Ditta Cipelletti Alberto Sterilizing device for an ice-cream or similar delivering machine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4608083A (en) * 1984-09-28 1986-08-26 Boliden Aktiebolag Method for recovering the valuable metal content of contaminated copper raw material
US4695317A (en) * 1985-01-31 1987-09-22 Sumitomo Metal Mining Company Limited Method of treating silicate ore containing gold and silver
US4867052A (en) * 1985-12-16 1989-09-19 Ditta Cipelletti Alberto Sterilizing device for an ice-cream or similar delivering machine
JPS646684A (en) * 1987-06-26 1989-01-11 Matsushita Refrigeration Refrigerator with thawing chamber
JPS6463092A (en) * 1987-09-02 1989-03-09 Konishiroku Photo Ind Treating device for waste liquid of photographic processing
US4814003A (en) * 1988-01-29 1989-03-21 Bergner Richard M Apparatus and method for extraction and recovery of precious metal using coherent radiation

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5869527A (en) * 1995-12-29 1999-02-09 Alteon Inc. 6-(N-carboxymethylamino)caproate, salts thereof and methods of use therefor
US6710036B2 (en) 1997-07-25 2004-03-23 Avigen, Inc. Induction of immune response to antigens expressed by recombinant adeno-associated virus
US6573094B1 (en) 1997-10-16 2003-06-03 Baylor College Of Medicine F-box genes and proteins
US8236500B2 (en) 1997-10-23 2012-08-07 The United States Of America, As Represented By The Department Of Veterans Affairs Promoter variants of the alpha-7 nicotinic acetylcholine receptor
AT406273B (de) * 1997-10-23 2000-03-27 Prior Eng Ag Verfahren zum aufschliessen von edelmetallhaltigen materialien
US7572580B2 (en) 1997-10-23 2009-08-11 The United States Of America As Represented By The Department Of Veterans Affairs Promoter variants of the alpha-7 nicotinic acetylcholine receptor
US6875606B1 (en) 1997-10-23 2005-04-05 The United States Of America As Represented By The Department Of Veterans Affairs Human α-7 nicotinic receptor promoter
US8013118B2 (en) 1998-09-18 2011-09-06 The Rockefeller University Lynx polypeptides
US6441156B1 (en) 1998-12-30 2002-08-27 The United States Of America As Represented By The Department Of Health And Human Services Calcium channel compositions and methods of use thereof
US6979724B2 (en) 1998-12-30 2005-12-27 The United States Of America As Represented By The Secretary Of The Department Of Health And Human Services Calcium channel proteins
US7053119B2 (en) 1999-11-23 2006-05-30 The Regents Of The University Of California Methods for identifying and using IKK inhibitors
US6649654B1 (en) 1999-11-23 2003-11-18 The Regents Of The University Of California Methods for identifying and using IKK inhibitors
US7105333B2 (en) 2001-03-27 2006-09-12 Deadreon Corporation Nucleic acid molecules encoding a transmembrane serine protease 9, the encoded polypeptides and methods based thereon
WO2004043237A2 (fr) 2002-11-08 2004-05-27 Barnes-Jewish Hospital Dosages du decouplage de la synthese et de la degradation du collagene
US7968308B2 (en) 2004-10-22 2011-06-28 Danisco Us Inc. Isolating human antibodies
US20060231171A1 (en) * 2005-04-19 2006-10-19 Davis Samuel A Method for adding boron to metal alloys
US10420829B2 (en) 2006-01-16 2019-09-24 The United States Of America, As Represented By The Secretary, Department Of Health & Human Services Chlamydia vaccine
WO2008063933A2 (fr) 2006-11-10 2008-05-29 Massachusetts Institute Of Technology Modulateurs de pak
US8211858B2 (en) 2007-04-27 2012-07-03 The University Of Toledo Modified plasminogen activator inhibitor type-1 molecule and methods based thereon
US9169328B2 (en) 2010-03-26 2015-10-27 Memorial Sloan Kettering Cancer Center Antibodies to MUC16 and methods of use thereof
US9790283B2 (en) 2010-03-26 2017-10-17 Memorial Sloan Kettering Cancer Center Antibodies to MUC16 and methods of use thereof
US11834513B2 (en) 2010-03-26 2023-12-05 Memorial Sloan Kettering Cancer Center Antibodies to MUC16 and methods of use thereof
US10759869B2 (en) 2010-03-26 2020-09-01 Memorial Sloan Kettering Cancer Center Antibodies to MUC16 and methods of use thereof
US9297813B2 (en) 2010-11-11 2016-03-29 Agency For Science, Technology And Research Targeting metabolic enzymes in human cancer
CN104195347A (zh) * 2014-09-17 2014-12-10 招远市招金贵合科技有限公司 一种硫酸烧渣中金银富集工艺及提取金银的方法
US11066480B2 (en) 2015-03-17 2021-07-20 Memorial Sloan Kettering Cancer Center Anti-MUC16 antibodies and uses thereof
CN104726716A (zh) * 2015-03-31 2015-06-24 招金矿业股份有限公司 一种从氰化尾渣中提取金的方法
US11351255B2 (en) 2017-02-06 2022-06-07 Oncoquest Inc. Treatment of cancer with therapeutic monoclonal antibody specific for a tumor associated antigen and an immune adjuvant
US10537636B2 (en) 2017-02-06 2020-01-21 Oncoquest Inc. Treatment of cancer with therapeutic monoclonal antibody specific for a tumor associated antigen and an immune adjuvant
US11439649B2 (en) 2018-02-21 2022-09-13 AI Therapeutics, Inc. Combination therapy with apilimod and glutamatergic agents
US11957688B2 (en) 2018-02-21 2024-04-16 OrphAl Therapeutics Inc. Combination therapy with apilimod and glutamatergic agents

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