Various types of carrier catalysts are widely used in chemical and petrochemical industries, such as anthraquinone production of hydrogen peroxide, synthetic urea, CO removal from ammonia raw gas, benzene hydrogenation to synthesize cyclohexane, catalytic combustion of low concentration organic volatiles, reforming, isomerization, cracking, hydrogenation, dehydrogenation and other reactions in petroleum refining. Al2O3 is used as the carrier of various types, and SiO2 and CaCO3 are used as carriers. The main two metals used are platinum and palladium, forming Pt/Al2O3 and Pd/Al2O3 series, with different purposes, the platinum and palladium content of the catalyst is 0.01-0.5%, which is low-grade waste. Type a is insoluble in acid, while type y is easily soluble in acid. The composition of each type of spent catalyst is simple and involves only the recovery of individual platinum or palladium. The key to regenerative recovery technology is the effective separation of the platinum or palladium from the carrier and the extraction of the platinum-palladium enrichment or fine metal. One approach is to directly leach the platinum or palladium by stirring (or percolating or soaking) with acid or other chemical reagents, and then enrich from the solution by anion exchange, zinc (or iron or aluminum) replacement, activated carbon adsorption, sodium sulfide precipitation, and ethyl yellow drug precipitation. The opposite method is to leach the carrier to obtain the residue enriched with platinum and palladium. After the extraction of platinum and palladium enrichments or crude metals by both methods, there are no technical difficulties in further refining to pure metals.
Copper oxide ore processing Efficient Resource Extraction: Electrodeposition efficiently extracts copper from oxide ores, maximizing resource utilization through electrochemical reduction. High-Purity Output: The process yields high-purity copper products, meeting industry
Silver refining is a critical process, and electrolytic purification stands out as an efficient and scientific method. In the process of electrolytic purification, silver serves as the anode in a
The difference between it and electrolysis is that it can process low-grade precious metal-containing solutions. Yes, a significant advantage of the cyclone electrolysis equipment compared to traditional electrolysis equipment is
Details of electrolytic gold extraction machine 1. Function introduction: The electrolytic gold extraction machine is a technology for wet refining and purification of metals. It can selectively electrolyze valuable metals
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