Patents by Inventor Yu-Lung Sun

Yu-Lung Sun has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8986425
    Abstract: A method for recovering rare earth compounds, vanadium and nickel from waste vanadium-nickel catalysts, comprising steps of: acid leaching, by soaking waste vanadium-nickel catalysts into a sulfuric acid solution and obtaining a mixture containing alumina silica slag; sedimentation, by filtering out the alumina silica slag from the mixture to obtain a filtrate, and then adding a salt into the filtrate to precipitate rare earth double salts followed by isolating a sediment of rare earth double salts and a liquid solution via filtration; and extraction, by providing and adding an alkali into the sediment of rare earth double salts followed by further soaking the rare earth double salts in an acid solution to precipitate rare earth oxalate or rare earth carbonate, and adding an oxidizer into the liquid solution to adjust the pH value thereof and then extracting vanadium and nickel from the liquid solution via an ion-exchange resin.
    Type: Grant
    Filed: November 28, 2011
    Date of Patent: March 24, 2015
    Assignee: Hong Jing Environment Company
    Inventors: Yu-Lung Sun, Ming-Zhe Tsai, Yung-Hao Liu
  • Patent number: 8657917
    Abstract: A method for recycling metals from waste molybdic catalysts, comprises steps of leaching, by soaking a waste molybdic catalyst into a highly oxidized acid and conducting a reaction between sulfur in the waste molybdic catalyst and the acid to obtain sulfide and vaporizer, wherein metals in the waste molybdic catalyst are dissolved and oxidized by the acid to obtain a first solution and dregs; and refining, by further dissolving metals in the dregs into a second solution, and extracting metals in the waste molybdic catalyst from the first and second solution; wherein, the vaporizer obtained from the step of leaching is converted into highly oxidized acid and recycled in the step of leaching.
    Type: Grant
    Filed: June 22, 2011
    Date of Patent: February 25, 2014
    Assignee: Hong Jing Metal Corporation
    Inventors: Yu-Lung Sun, Ming-Zhe Tsai, Yung-Hao Liu
  • Patent number: 8574341
    Abstract: A method for recycling metals from waste tungsten catalysts comprises steps of: leaching, by soaking a waste tungsten catalysts into a highly oxidized acid and conducting a reaction between sulfur of the waste tungsten catalysts and the acid to obtain sulfide and oxidized acidic groups, wherein metals in the waste tungsten catalysts are dissolved and oxidized by the acid to obtain a first solution and dregs; and refining, by extracting metals of the waste tungsten catalysts from the first solution; wherein, the oxidized acidic groups obtained from the step of leaching is converted into highly oxidized acid, which is capable of being recycled.
    Type: Grant
    Filed: June 23, 2011
    Date of Patent: November 5, 2013
    Assignee: Hong Jing Metal Corporation
    Inventors: Yu-Lung Sun, Ming-Zhe Tsai, Yung-Hao Liu
  • Patent number: 8475632
    Abstract: A method for recycling cutting fluid includes preparing and processing a cutting fluid of silicon including a silicon mixture and a cutting fluid at an anoxic circumstance of 150° C. to 350° C. in a container, to obtain a vaporized cutting fluid and a silicon slurry; and condensing the vaporized cutting fluid to obtain a recycling cutting fluid.
    Type: Grant
    Filed: November 10, 2010
    Date of Patent: July 2, 2013
    Assignee: Hong Jing Environment Company
    Inventors: Yu-Lung Sun, Yung-Hao Liu, Ming-Zhe Tsai
  • Publication number: 20130091989
    Abstract: A method for recovering rare earth, vanadium and nickel from waste vanadium-nickel catalysts, comprising steps of: acid leaching, by soaking waste vanadium-nickel catalysts into a sulfuric acid solution and obtaining a mixture containing alumina silica slag; sedimentation, by filtering out the alumina silica slag from the mixture to obtain a filtrate, and then adding a salt into the filtrate to precipitate rare earth followed by isolating a sediment of rare earth double salts and a liquid solution via filtration; and extraction, by providing and adding an alkali into the sediment of rare earth double salts followed by further soaking the rare earth double salts in an acid solution to precipitate rare earth, and adding an oxidizer into the liquid solution to adjust the pH value thereof and then extracting vanadium and nickel from the liquid solution via an ion-exchange resin.
    Type: Application
    Filed: November 28, 2011
    Publication date: April 18, 2013
    Inventors: Yu-Lung SUN, Ming-Zhe Tsai, Yung-Hao Liu
  • Publication number: 20120279354
    Abstract: A method for recycling metals from waste molybdic catalysts, comprises steps of leaching, by soaking a waste molybdic catalyst into a highly oxidized acid and conducting a reaction between sulfur in the waste molybdic catalyst and the acid to obtain sulfide and vaporizer, wherein metals in the waste molybdic catalyst are dissolved and oxidized by the acid to obtain a first solution and dregs; and refining, by further dissolving metals in the dregs into a second solution, and extracting metals in the waste molybdic catalyst from the first and second solution; wherein, the vaporizer obtained from the step of leaching is converted into highly oxidized acid and recycled in the step of leaching.
    Type: Application
    Filed: June 22, 2011
    Publication date: November 8, 2012
    Inventors: Yu-Lung SUN, Ming-Zhe TSAI, Yung-Hao LIU
  • Publication number: 20120279355
    Abstract: A method for recycling metals from waste tungsten catalysts comprises steps of: leaching, by soaking a waste tungsten catalysts into a highly oxidized acid and conducting a reaction between sulfur of the waste tungsten catalysts and the acid to obtain sulfide and oxidized dianions, wherein metals in the waste tungsten catalysts are dissolved and oxidized by the acid to obtain a first solution and dregs; and refining, by extracting metals of the waste tungsten catalysts from the first solution; wherein, the oxidized dianions obtained from the step of leaching is converted into highly oxidized acid, which is capable of being recycled.
    Type: Application
    Filed: June 23, 2011
    Publication date: November 8, 2012
    Inventors: Yu-Lung SUN, Ming-Zhe TSAI, Yung-Hao LIU
  • Publication number: 20120073952
    Abstract: A method for recycling cutting fluid, comprises a step of “separation,” by preparing and oxidizing a cutting fluid of silicon including a silicon mixture and a cutting fluid at 150° C. to 350° C. in a container, to obtain a vaporized cutting fluid and a silicon slurry; and a step of “recycling,” by condensing the vaporized cutting fluid to obtain a recycling cutting fluid.
    Type: Application
    Filed: November 10, 2010
    Publication date: March 29, 2012
    Inventors: Yu-Lung SUN, Yung-Hao Liu, Ming-Zhe Tsai
  • Publication number: 20120020853
    Abstract: A method of manufacturing alumina by recycling nickel-aluminum comprises a step of “soaking,” by soaking a purified mineral of nickel-aluminum into an alkaline buffer followed by keeping at an environment of 1 ATM to obtain a rough solution of aluminate; a step of “filtration,” by filtering out a purified mineral of nickel and cobalt from the rough solution of aluminate to obtain a solution of aluminate; a step of “purification,” by adding a de-impurity reagent into the solution of aluminate to remove the impurity of vanadates, molybdates and silicates from the solution of aluminate, in order to obtain a purified solution of aluminate; a step of “sedimentation,” by precipitating out aluminum hydroxide from the purified solution of aluminate; and a step of “calcination,” by calcining the aluminum hydroxide, finally to obtain alumina.
    Type: Application
    Filed: October 5, 2010
    Publication date: January 26, 2012
    Inventors: Yu-Lung SUN, Yung-Hao Liu, Ming-Zhe Tsai
  • Publication number: 20110300047
    Abstract: A method for recycling silicon, comprises a filtrating step, providing a siliceous mortar containing silicon carbide, silicon and a buffer, and further filtering out the buffer form the siliceous mortar to obtain a siliceous slurry; a removing step, heating the siliceous slurry till the buffer has evaporated to obtain a mixture of silicon and silicon carbide; a stirring step, placing the mixture of silicon and silicon carbide in a liquid-substrate followed by stirring and incubating for a while to obtain a sedimentation of the mixture of silicon and silicon carbide and a suspension containing the liquid-substrate and silicon; and a purifying step, filter off the liquid-substrate in the suspension, and silicon powders are obtained.
    Type: Application
    Filed: July 9, 2010
    Publication date: December 8, 2011
    Inventors: Yu-Lung Sun, Yung-Hao Liu
  • Publication number: 20110300048
    Abstract: A method for recycling silicon carbide, comprises a filtrating step, providing a siliceous mortar with silicon carbide, silicon and a buffer, and further filtering out the buffer form the siliceous mortar to obtain a siliceous slurry; a first removing step, heating the siliceous slurry to evaporate the buffer and obtain a mixture of silicon and silicon carbide; a dissolving step, placing the mixture of silicon and silicon carbide in an alkaline solution to dissolve the silicon from the mixture of silicon and silicon carbide into the alkaline solution; and a second removing step, completely removing the alkaline solution containing dissolved silicon, in order to obtain purified silicon carbide.
    Type: Application
    Filed: July 9, 2010
    Publication date: December 8, 2011
    Inventors: Yu-Lung SUN, Yung-Hao LIU