Abstract: An operation method of a copper-smelting furnace is characterized by including supplying an Fe metal source into a copper-smelting furnace together with a feeding material including copper concentrate and a flux, the copper concentrate including Al, the Fe metal source including an Fe metal of 40 mass % to 100 mass %.

Abstract: An operation method of a copper-smelting furnace is characterized by including supplying an Fe metal source into a copper-smelting furnace together with a feeding material including copper concentrate and a flux, the copper concentrate including Al, the Fe metal source including an Fe metal of 40 mass % to 100 mass %.

Abstract: A concentrate burner provided over a reaction shaft of a copper smelting furnace, is characterized by comprising: a raw material supply portion that supplies a starting material into the reaction shaft, the starting material including copper concentrate; and an additive supply portion that is provided separately from the raw material supply portion and supplies solid additive to the starting material.

Abstract: A concentrate burner provided over a reaction shaft of a copper smelting furnace, is characterized by comprising: a raw material supply portion that supplies a starting material into the reaction shaft, the starting material including copper concentrate; and an additive supply portion that is provided separately from the raw material supply portion and supplies solid additive to the starting material.

Abstract: A raw material supply device that supplies a raw material into a flash smelting furnace and supplies first gas and second gas into the flash smelting furnace, includes: a first gas pathway that is provided in a lance and supplies the first gas into the flash smelting furnace; a raw material pathway that is provided out of the lance and supplies the raw material into the flash smelting furnace; a second gas pathway that is provided out of the raw material pathway and supplies the second gas into the flash smelting furnace; and a blade that is provided in the first gas pathway, has an inclined face with which the first gas is collided and revolves the first gas toward a lower side of the flash smelting furnace, the inclined face being inclined with respect to a flow direction of the first gas in the first gas pathway.

Abstract: 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.

Abstract: A raw material supply process 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.

Abstract: An operation method of a copper-smelting furnace is characterized by including supplying an Fe metal source into a copper-smelting furnace together with a feeding material including copper concentrate and a flux, the copper concentrate including Al, the Fe metal source including an Fe metal of 40 mass % to 100 mass %.

Abstract: A raw material supply device that supplies a raw material into a flash smelting furnace and supplies first gas and second gas into the flash smelting furnace, includes: a first gas pathway that is provided in a lance and supplies the first gas into the flash smelting furnace; a raw material pathway that is provided out of the lance and supplies the raw material into the flash smelting furnace; a second gas pathway that is provided out of the raw material pathway and supplies the second gas into the flash smelting furnace; and a blade that is provided in the first gas pathway, has an inclined face with which the first gas is collided and revolves the first gas toward a lower side of the flash smelting furnace, the inclined face being inclined with respect to a flow direction of the first gas in the first gas pathway.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: A method allowing production of high-purity perrhenic acid from rhenium sulfide by applying pyrometallurgical process is provided.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: A method allowing production of high-purity perrhenic acid from rhenium sulfide by applying pyrometallurgical process is provided.

Abstract: 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.

Abstract: A copper smelting method includes: supplying an oxygen-enriched gas, a solvent, and a copper concentrate into a furnace, while not supplying a coke material; and supplying pig iron to slag that is generated in the furnace.