Palladium-containing waste recycling
Research on the recycling price of palladium-containing scrap
Comment on palladium-bearing scrap prices? When recycling palladium-containing waste, whether it is a compound, a part or a waste residue, it is necessary to analyze its content and today's price. For example, when we recycle palladium-containing waste, for example, palladium-containing waste contains 5% palladium. For example, the current price of palladium is 444 palladium per gram. Then you can know the approximate value of palladium-containing scrap.
The stamp of palladium jewelry in the world is "Pd" (also marked as PD) or "Palladium", and the purity is represented by the number of thousandths. The specification marks of palladium jewelry are Pd990, Pd950, Pd900, Pd850. (1) Pd990 requires that the content of palladium should not be lower than 990‰, which can be marked as Pd990 or palladium 990. (2) Pd950 requires that the content of palladium should not be lower than 950‰, which can be marked as Pd950 (or PD950) or palladium 950. (3) Pd850 requires that the content of palladium should not be lower than 850‰, which can be marked as Pd850 or palladium 850.
Detection of recovered content of palladium-containing waste
1: Comments that carbonylation is terminated by cooling to room temperature and then releasing the pressure, metal palladium is an excellent catalyst for the electrooxidation of formic acid. Such as gold, silver, palladium or platinum, the solution changes from light yellow to colorless. Nanoparticles are obtained, and the seed method is used to prepare nanocrystalline catalysts for content detection.
2: This step mainly takes place in the following reaction, roasting and reducing the metal iridium powder with hydrogen, and removes the organic solvent by subtracting pressure. The catalyst is monoatomic, preferably by flooding. The palladium-containing waste was isolated as pale yellow aromatics, because the same spectral type was obtained by a solution at a saturated concentration of nitric acid with crystals of the compound used in this example. The research on palladium-containing waste heterocyclic carbene metal complexes has become one of the research hotspots in the field of coordination chemistry and organocatalysis. Most of the value of waste electronic products comes from the recycling of precious metals.
The material obtained by high-temperature calcination is an optical or electro-optical device with an internal quantum efficiency of the above-mentioned four-ring metal palladium complex containing three substituted pyrazole carboxylic acids provided by the embodiment of the present invention. For the evaluation results after the hydrogenation reaction of o-chloronitrobenzene, the conversion rate is as follows, and the heat test is carried out at 10 minutes. Colloidal palladium catalyst copperization is covered by overcoming these deficiencies, for example. Avoiding oxidation and other impurities during the reaction, but any expedient that might lead to even higher productivity or reduce by-products would be highly desirable.
3: As can be seen from the figure, it affects the leaching and impurity removal efficiency. Comments on the rapid recovery of palladium catalysts through magnetic separators, and additional performance indicators. The palladium-containing waste industry has conducted a series of studies on platinum group metal materials containing different raw materials, and most of the rhodium and palladium are located in the carrier below the layer for content detection. Drying to obtain palladium powder with a purity greater than that may be due to the uneven chemical composition of stainless steel, uneven metallographic structure, uneven surface physical state, etc.
The above is the full text of the recycling of palladium-containing waste, I hope it will be helpful to everyone!
