scrap metal refinery near me-「Recovery」

admin Precious metals 2021-03-27 14:18 0


Introduction to the scrap metal refinery near me method, the latest information on the recycling of scrap metal in the factory, this, in a safe environment, is the amide as a toxic substance. The object of the present invention is to provide a method for recovering and refining silver from copper-containing sulfide plants without special consideration. As a result of various studies to solve the above-mentioned problems, the inventor of the present invention developed a copper. If the copper-containing sulfide is subjected to pressure extraction under specific conditions, silver can be concentrated into the leaching residue in the form of silver-iron bauxite at low cost. The present invention was completed by finding that the present invention can be effectively obtained, and when an aqueous solution containing a specific compound is used, silver can be easily leached and separated from the silver vitriol and recovered to refine the silver in the factory. That is according to the first invention. According to the method of the present invention, in the method of recovering and refining scrap metal from a copper-containing sulfide containing scrap metal gold as a main component, the following treatments are sequentially performed. A method for recovering and refining scrap metal from copper-containing sulfide is provided. The sulfuric acid solution containing iron and the peptizer composed of lignosulfonic acid and its salt are mixed in such a ratio. And copper-containing sulfides. After injecting the slurry into the pressurized container, while maintaining the temperature of the slurry at the same time, the pressure of the gas phase in the pressurized container is less than the equilibrium state. Sufficient oxygen and or supply of added air to the air, Phase part to adjust the scrap metal ore reduction potential of the slurry.


Information on the recycling of sulfuric acid scrap metal through the factory. The solid-liquid separation and the copper-containing leaching solution mix the copper leaching residue and the sodium thiosulfate solution silver leaching solution containing sodium thiosulfate in a ratio of acid anhydride. After obtaining the slurry, solid-liquid separation is performed to obtain the final silver leaching solution and the silver leaching residue. The leached silver is contacted with charcoal, the silver is adsorbed on the activated carbon, and the plant is recycled and refined. According to the fourth invention of the present invention, in the copper-containing sulfide according to the first invention, the sulfuric acid solution in the sulfuric acid solution contains free sulfuric acid. A method for recovering and refining silver from a factory is provided. According to the fifth aspect of the present invention, in the first aspect, the reduction potential of the scrap metal ore in the gold based on the silver scrap metal is up to. It provides a method for recovering and refining silver from the product in the factory. According to a sixth aspect of the present invention, in the first aspect, the slurry concentration of the copper leaching residue slurry in the above is. According to the seventh aspect of the present invention, in the first aspect, the sodium thiosulfate solution in is a sodium thiosulfate solution, and activated carbon is added to it in a ratio of up to that. The invention provides a method for leaching silver from copper-containing sulfides.


In the present invention, by adopting the above-mentioned structure, the excess iron leached together with the copper is simply combined with the silver iron agate containing silver iron vitriol. Hereinafter referred to as, It is agate with silver. In this case, the silver-containing iron bauxite adheres and deposits in the sulfur pellet factory. Information on the recovery of sulfuric acid scrap metal. On the surface, the sulfur particles were formed during the leaching process and turned into droplets by the deflocculant. Cover with silver-containing iron bauxite. As a result, the sulfur particles can be prevented from unreacting or covering the surface of the copper-containing sulfide particles during the reaction, and silver can be leached at a higher leaching rate than the copper-containing sulfide. In addition, by covering the surface of the sulfur particles with silver-containing iron bauxite, waste metal ore of sulfur can be prevented, and the sulfuric acid balance in the system can be easily controlled. In addition, in the present invention, since the silver in agate silver is leached with a sodium thiosulfate solution, there is no need to heat the solution containing a strong base such as hydrogen waste metal mineral calcium to near boiling, and it is obtained through the same operation. produced. There is no need to use toxic sodium cyanide to dissolve scrap metal ores of silver. As a result, the amount of starch produced by hydrogen waste metal mineral calcium will not be generated in the wastewater treatment, so there is no need to take special consideration in the safe environment of using sodium cyanide. In addition, the silver ions in the sodium thiosulfate solution are adsorbed on the activated carbon. The activated carbon is obtained by burning the carbon, so that the precious metal scrap silver can be obtained simply, effectively and at low cost. In addition, in the present invention, when silver is leached from the copper-containing sulfide and silver vitriol is obtained,


the leaching is performed, Use a leaching solution that does not contain chlorides, and the slurry temperature during the leaching process is as high as possible, and there is no need to use special expensive materials to construct information on the recovery of sulfuric acid scrap metal from the factory. The equipment is made of stainless steel with general heat resistance and corrosion resistance, for example, and resistance can be used to reduce equipment costs. Therefore, the method of the present invention is a method of recovering and refining scrap metal from AC power plants. Simple and low-cost sulfur-containing sulfides that do not require special consideration for safety and environment and have high industrial value. The present invention will be described in detail below. It is formed from copper-containing sulfides and sulfuric acid solutions containing iron and peptizers.



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