تلتزم الشركة دائمًا بمعدات سحق التعدين ومعدات صنع الرمل ومعدات الطحن الصناعية، وتوفير حلول عالية الجودة للرمل والحصى ومجموعات كاملة من المعدات للمشاريع الهندسية واسعة النطاق مثل الطرق السريعة والسكك الحديدية والمياه والكهرباء، إلخ. ، وتسعى جاهدة لممارسة التصنيع الدقيق المحلي والتخطيط العلمي العالمي، مع اعتبار آسيا المنطقة النائية والعملاء المشعين حول العالم. بعد أكثر من 30 عامًا من التطوير، نجحت العديد من منتجات الشركة في اجتياز العديد من شهادات الجودة الدولية مثل الشهادة الدولية ISO9001:2015، وشهادة الاتحاد الأوروبي CE، وشهادة GOST الروسية. بعد ذلك، في السعي لتحقيق التميز، سنستمر في استخدام منتجات عالية الجودة والتكنولوجيا الاحترافية والخدمات المخلصة لمساعدة العملاء على خلق قيمة أكبر، واستخدام الإجراءات العملية لمواصلة تعزيز البناء البيئي للحضارة الإنسانية.
·Printed circuit boards PCBs make up a substantial amount of electronic waste e waste generated annually Waste PCBs contain high quantities of copper and gold in comparison to natural ores As such urban mining of waste PCBs to recover these metals is of commercial interest
·Request PDF Recovery of gold silver copper and niobium from printed circuit boards using leaching column At this time over 300 tons of Au are used in electronic equipment each year with
·Slurry electrolysis is an effective technology for recovering gold from waste printed circuit boards WPCBs However electrochemical oscillation during the gold recovery process is a potential factor affecting power consumption
·The optimum conditions for 85% gold recovery found was 7 9% S/L ratio mol/L iodide concentrations neutral pH with 4 h of leaching Xu et al 2009 used hydrogen peroxide as oxidant in iodine leaching of Au from circuit boards
·2 Dip the edges of the circuit boards in this solution and allow to stand for six to eight hours Remove the boards from the solution and rinse 3 Filter the solution and collect the flakes of gold that have detached from the boards StripFree Method 4 Cut a square piece of stainless steel screen smaller than the inside of the plastic/glass pan
·1 Introduction Printed circuit boards PCBs essential in all sorts of electronic equipment and portable gadgets laptop computers and mobile phones contain substantial amounts of gold Au which oftentimes exceed those found in natural Au ores Jeon et al 2018a; Park et al 2017 Arima et al 2002 for example reported that Au in PCBs of mobile phones
4 ·The best parts to use in this experiment are printed circuit boards motherboards central processing units random access memory chips drives and other internal modems Identify areas with gold color on these parts and strip the surrounding plastic You should have more gold colored components than plastic to extract a sizeable amount of gold
·Gold recovery from printed circuit boards by selective breaking of internal metallic bonds using activated persulfate solutions J Clean Prod 166 2017 pp 1102 1112 / View PDF View article View in Scopus
·Gold recovery from waste printed circuit boards of mobile phones by using microwave pyrolysis and hydrometallurgical methods Yu Fong Huang1 Szu Ling Chou1 and Shang Lien Lo1 2 Abstract Recycling of waste printed circuit boards PCBs has attracted increasing attention because of its high annually produced amount and high content of gold
·Table Comparison of Gold Extraction Methods Conclusion Gold recovery from computers through circuit board recycling is a practical method that individuals and companies can utilise to obtain valuable amounts of gold By following the step by step guides mentioned it is possible to extract gold from circuit boards and contribute to the recycling of electronic waste
The effect of a preliminary acid leaching for the recovery of gold by thiourea from printed circuit boards PCBs of spent mobile phones was investigated and qualitative considerations on the technical and economic feasibility of the different routes were made
·Waste PCBs WPCBs contain many types of valuable but environmentally harmful metals Thus the recovery of metals from WPCBs has a high environmental consequence and is essential for resource conservation The study aims to develop eco friendly methods for the recovery of metals from WPCBs Through this work a systematic procedure for the separation
3 ·Relying on fire assay is a good option when it comes to bulk gold removal from circuit boards The metal melts down and can gather it in special molds and ingots made of steel as well For small scale removal we can use ingots made of clay and sand 12 Use a Gold Leaching Process Gold leaching is also a good option for this purpose
·A hydrometallurgical process for the recovery of gold and silver from waste printed circuit boards PCBs was experimentally verified and tested at pilot scale The process comprises four sequential leaching stages; the first two based on HCl correspond to base metals Sn Cu removal while the third is based on HNO 3 for Ag leaching and
·Hydrometallurgical recovery of silver and gold from waste printed circuit boards and treatment of the wastewater in a biofilm reactor An integrated pilot application J Environ Manage 344 A comprehensive review on the recycling of discarded printed circuit boards for resource recovery Resour Conserv Recycl 178 2022 Article 106027
·This study proposes a more environmentally friendly effective and selective technology for the recovery of Au from FPCBs providing a reference for the recovery of precious metals Download Download high res image 201KB Download Download full size image; Fig 1 General process flow diagram for gold recovery from flexible printed circuit
·The paper describes a small full scale plant based on the Gold REC 1 process designed and patented by the University of L Aquila; the hydrometallurgical process allows the treatment of printed circuit boards PCBs The first step is a mechanical treatment to reduce the size of the scraps below 2 mm The extraction of base metals occurs in a first reactor by a
·Garlic peel GP was chemically modified by using thiourea under hydrothermal treatment which could selectively adsorb gold ions from the 1/10 dilute aqua regia media directly without needing the dangerous evaporation operation The synthetic chloroauric solution and practical leach liquor of the waste PCB printed circuit board powder in dilute aqua regia were
·Waste printed circuit boards contain a lot of valuable materials such as gold silver and palladium In this research we focused on the recovery of the precious metals with high purity Aqua regia was used as a leachant and the ratio between metals and leachant was fixed at 1/20 g/ml
·This study proposes a more environmentally friendly effective and selective technology for the recovery of Au from FPCBs providing a reference for the recovery of precious metals Download Download high res image 201KB Download Download full size image; Fig 1 General process flow diagram for gold recovery from flexible printed circuit