PAN PACIFIC COPPER CO., LTD. Patent applications |
Patent application number | Title | Published |
20160017508 | METHOD FOR MANUFACTURING ELECTROLYTIC COPPER - Provided is a method for producing electrolytic copper having a low Ag content by successfully suppressing the Ag concentration in an electrolytic solution. The electrolytic copper production method involves a step in which blister copper comprising Ag is used as an anode, and electrolysis is carried out under sulfuric acid acidity while maintaining the anode electric potential at a relatively low electric potential in comparison to the electric potential of the Ag elution. | 01-21-2016 |
20150114181 | METHOD FOR PRODUCING AQUEOUS SOLUTION OF PERRHENIC ACID FROM RHENIUM SULFIDE - A method for allowing production of high-purity perrhenic acid from crude rhenium sulfide by applying a dry process is provided. A method for producing an aqueous solution of perrhenic acid includes 1) a step for roasting rhenium sulfide under an oxygen-containing gas to collect gasified rhenium oxide; 2) a step for cooling and solidifying the gasified rhenium oxide while keeping sulfur oxide entrained in the gasified rhenium oxide a gaseous state, and subsequently performing solid-gas separation, thereby improving purity of rhenium oxide; and 3) a step for dissolving the solidified rhenium oxide into water, or heating and gasifying the solidified rhenium oxide and then dissolving the gasified rhenium oxide into water, to obtain the aqueous solution of perrhenic acid. | 04-30-2015 |
20150107414 | METHOD FOR PRODUCING AQUEOUS SOLUTION OF PERRHENIC ACID FROM RHENIUM SULFIDE - A method allowing production of high-purity perrhenic acid from rhenium sulfide by applying pyrometallurgical process is provided. A method for producing an aqueous solution of perrhenic acid, comprising: 1) a step for performing a first roasting process of rhenium sulfide under an oxygen-containing gas to generate rhenium oxide and sulfur oxide, the sulfur oxide being gasified for discharge and the rhenium oxide being obtained as a roasted residue; 2) a step for performing a second roasting process of the roasted residue under an oxygen-containing gas to collect gasified rhenium oxide; 3) a step for cooling and solidifying the gasified rhenium oxide, or a step for dissolving the gasified rhenium oxide into water while water-cooling to obtain the aqueous solution of perrhenic acid; and 4) in case where the rhenium oxide is solidified, a step for dissolving the solidified rhenium oxide into water, or heating and gasifying the solidified rhenium oxide and then dissolving the gasified rhenium oxide into water, to obtain the aqueous solution of perrhenic acid. | 04-23-2015 |
20150091224 | RAW MATERIAL SUPPLY APPARATUS, RAW MATERIAL SUPPLY METHOD AND FLASH SMELTING FURNACE - A raw material supply apparatus that supplies a raw material into a flash smelting furnace and supplies a first gas contributing to a reaction of the raw material into the flash smelting furnace, includes: a raw material passage that is provided out of a lance through which the first gas passes, the raw material passing through the raw material passage; and an adjuster that adjusts a distribution of the raw material by blowing a second gas to the raw material passing through the raw material passage. | 04-02-2015 |
20110074070 | OPERATION METHOD OF FLASH SMELTER AND RAW MATERIAL SUPPLY APPARATUS - An operation method of a flash smelter includes blowing a gas for dispersing raw material and contributing to a reaction, from a lance at an upper portion of a shaft so that the gas forms a spiral flow. A raw material supply apparatus includes a supply portion supplying raw material and a gas for dispersing the raw material and contributing to a reaction into a flash smelting furnace, wherein the supply portion has a lance provided at an upper portion of a shaft that blows the gas so that the gas forms a spiral flow. | 03-31-2011 |
20100243454 | PROCESS FOR TREATING EXHAUST GAS GENERATED DURING WATER-GRANULATION OF SLAG AND SYSTEM FOR SAID TREATMENT - The present invention provides a process for treating a exhaust gas which is generated when slag discharged from a smelting furnace for non-ferrous metal is water-granulated. There is provided a process for treating an exhaust gas, which is generated during water granulation of slag discharged from a smelting furnace for non-ferrous metal, containing the water vapor as a major component and metal fumes, the process comprising a step of treating the exhaust gas by a wet electrostatic precipitator. | 09-30-2010 |
20090085263 | INSPECTION HOLE STRUCTURE FOR FLASH-SMELTING FURNACE - An inspection hole structure | 04-02-2009 |
20090084457 | TRANSFER PIPE OF DRIED CONCENTRATE AND BREAKAGE DETECTING METHOD OF TRANSFER PIPE - A transfer pipe of dried concentrate for transferring dried concentrate, having a double pipe structure, comprising an inner pipe | 04-02-2009 |
20090064820 | Method for operating non-ferrous smelting plant - In the operation, a flux mainly composed of silica ore and a non-ferrous metal-ore raw-material are charged into a smelting furnace via a conveying system. | 03-12-2009 |