A physical and chemical method is provided for de-mixing (e.g. extracting, separating, purifying and/or enriching) the metal constituents of an alloy or mixed material into different droplet or solid particle products that are highly enriched in the respective phases of the metal. The method involves for instance but is not limited to, shearing, separating and segregating metallic droplets and particles in a carrier fluid to form other droplets or particles that are each separately highly enriched in one of some, if not of all, of the constituent phases of the alloy or mixed material.

A physical and chemical method is provided for de-mixing (e.g. extracting, separating, purifying and/or enriching) the metal constituents of an alloy or mixed material into different droplet or solid particle products that are highly enriched in the respective phases of the metal. The method involves for instance but is not limited to, shearing, separating and segregating metallic droplets and particles in a carrier fluid to form other droplets or particles that are each separately highly enriched in one of some, if not of all, of the constituent phases of the alloy or mixed material.

The present invention relates to a reduction device using a liquid metal, which can improve the oxidation reaction of a reducing agent for reducing a material to be reduced using a liquid metal, while simultaneously effectively controlling the same. The reduction device according to the present invention comprises: a storage unit in which the liquid metal is supplied and stored; a reducing agent positioned in the storage unit; a reduction unit positioned on a side of the storage unit, which receives a material to be reduced and enables fluid communication with the storage unit; and a liquid metal storage unit. According to the present invention, a reducing agent, which has strong reducing ability, is sublimated using a liquid metal, thereby further improving the reduction capability, and the same is also controlled precisely, thereby removing restrictions on use resulting from the explosive reaction of the reducing agent, and guaranteeing efficient operation.

The present invention relates to a reduction device using a liquid metal, which can improve the oxidation reaction of a reducing agent for reducing a material to be reduced using a liquid metal, while simultaneously effectively controlling the same. The reduction device according to the present invention comprises: a storage unit in which the liquid metal is supplied and stored; a reducing agent positioned in the storage unit; a reduction unit positioned on a side of the storage unit, which receives a material to be reduced and enables fluid communication with the storage unit; and a liquid metal storage unit. According to the present invention, a reducing agent, which has strong reducing ability, is sublimated using a liquid metal, thereby further improving the reduction capability, and the same is also controlled precisely, thereby removing restrictions on use resulting from the explosive reaction of the reducing agent, and guaranteeing efficient operation.

A physical and chemical method is provided for de-mixing (e.g. extracting, separating, purifying and/or enriching) the metal constituents of an alloy or mixed material into different droplet or solid particle products that are highly enriched in the respective phases of the metal. The method involves for instance but is not limited to, shearing, separating and segregating metallic droplets and particles in a carrier fluid to form other droplets or particles that are each separately highly enriched in one of some, if not of all, of the constituent phases of the alloy or mixed material.

A physical and chemical method is provided for de-mixing (e.g. extracting, separating, purifying and/or enriching) the metal constituents of an alloy or mixed material into different droplet or solid particle products that are highly enriched in the respective phases of the metal. The method involves for instance but is not limited to, shearing, separating and segregating metallic droplets and particles in a carrier fluid to form other droplets or particles that are each separately highly enriched in one of some, if not of all, of the constituent phases of the alloy or mixed material.

A method for refining bismuth is provided, which comprises recovering bismuth from a solution obtained after recovery of noble metals from a copper electrolytic slime.

The method comprises:
1) a neutralization step of adding alkali to an acid solution to adjust the pH to the range of 2.0 or more and 3.0 or less, and then performing solid-liquid separation to obtain a neutralized filtrate and a neutralized precipitate;
2) an alkaline leaching step of adding alkali to the neutralized precipitate obtained in the neutralization step to separate the resultant into an alkali leachate and an alkaline leaching residue;
3) a sulfuric acid leaching step of adding sulfuric acid to the alkaline leaching residue to separate the resultant into a sulfuric acid leachate and a sulfuric acid-leaching residue;
4) a cooling step of cooling the sulfuric acid leachate obtained in the sulfuric acid leaching step to obtain crystals of bismuth sulfate;
5) a bismuth oxidation step of adding alkali to the crystals of bismuth sulfate obtained in the cooling step to obtain bismuth oxide; and
6) an electrolysis step of adding an acid solution to the bismuth oxide obtained in the bismuth oxidation step for dissolution and then electrowinning the thus obtained solution to obtain metal bismuth.

A method for refining bismuth is provided, which comprises recovering bismuth from a solution obtained after recovery of noble metals from a copper electrolytic slime.

The method comprises:
1) a neutralization step of adding alkali to an acid solution to adjust the pH to the range of 2.0 or more and 3.0 or less, and then performing solid-liquid separation to obtain a neutralized filtrate and a neutralized precipitate;
2) an alkaline leaching step of adding alkali to the neutralized precipitate obtained in the neutralization step to separate the resultant into an alkali leachate and an alkaline leaching residue;
3) a sulfuric acid leaching step of adding sulfuric acid to the alkaline leaching residue to separate the resultant into a sulfuric acid leachate and a sulfuric acid-leaching residue;
4) a cooling step of cooling the sulfuric acid leachate obtained in the sulfuric acid leaching step to obtain crystals of bismuth sulfate;
5) a bismuth oxidation step of adding alkali to the crystals of bismuth sulfate obtained in the cooling step to obtain bismuth oxide; and
6) an electrolysis step of adding an acid solution to the bismuth oxide obtained in the bismuth oxidation step for dissolution and then electrowinning the thus obtained solution to obtain metal bismuth.

A method for comprehensively processing noble lead provided and utilizes two instances of vacuum distillation to realize an open circuit of arsenic, lead, antimony and bismuth and the high-efficiency enrichment of precious metals of gold and silver, and can obtain elemental arsenic, a lead-bismuth-antimony alloy, a silver alloy and a copper alloy, respectively. The lead-bismuth-antimony alloy, the silver alloy and the copper alloy are processed by oxidation refining, electrorefining and chlorination refining to obtain refined lead, refined antimony, antimony trioxide, electrolytic silver and electrolytic copper, and to realize gold enrichment. The entire process has advantages of high metal direct yield, low energy consumption, short flow chart, simple equipment, etc., and vacuum distillation belongs to a physical process in which the alloy can be separated only by means of the difference in saturated vapor pressure between the metals, without generation of wastewater, waste gas and waste residue.

A physical and chemical method is provided for de-mixing (e.g. extracting, separating, purifying and/or enriching) the metal constituents of an alloy or mixed material into different droplet or solid particle products that are highly enriched in the respective phases of the metal. The method involves for instance but is not limited to, shearing, separating and segregating metallic droplets and particles in a carrier fluid to form other droplets or particles that are each separately highly enriched in one of some, if not of all, of the constituent phases of the alloy or mixed material.