WASHINGTON Institute of Applied Materials Jiangsu Teachers University of continuous efforts, has developed its own set of comprehensive recovery of gold and silver from electronic waste precious metals and other wet techniques, through dissolution, reduction, refining, drying and melting, etc. Process, the product with gold (silver) content can reach the international No. 2 gold (silver) standard.
According to different types of waste and gold and silver content at home and abroad, the recycling technology of gold and silver from electronic waste mainly includes three types: pyrometallurgical technology recovery, hydrometallurgical technology recovery and biological recovery.
At present, Nanjing Jinze Metal Materials Co., Ltd. has regenerated and reused organic waste such as copper and other organic wastes in electronic waste, and has achieved good disposal in the process of recycling. However, in the process of recycling organic waste such as copper and other non-ferrous metals and plastics, components such as circuit boards containing precious metals such as gold and silver cannot be effectively recycled according to current equipment and processes, which affects the economic benefits of the company and causes Waste of resources. To this end, the company fully relies on the technological advantages of Jiangsu Institute of Technology and other scientific research institutions, using the newly developed advanced technology, the two sides cooperate to implement the annual processing of 300t electronic waste recycling gold and silver and other precious metal industrialization projects.
At present, some world-famous electronic product manufacturers such as Motorola and Samsung Electronics have started to cooperate with Nanjing Jinze Metal Materials Co., Ltd. to recover precious metals from scrap products and semi-finished products.
Installation steps for SANY hydraulic cylinder seals
1. Preparation: Clean the working surface and seals, and check if the seals are damaged or deformed.
2. Apply lubricant: Apply a layer of lubricant to the seal and sealing groove.
3. Install the seal: Place the seal into the sealing groove, ensuring that the seal is fully embedded in the groove.
4. Install O-ring: Install the O-ring above the seal, ensuring that the O-ring is fully inserted into the groove.
5. Install the piston rod: Insert the piston rod into the seal and O-ring, ensuring that the piston rod fits tightly with the seal and O-ring.
6. Install the sealing sleeve: Place the sealing sleeve on the piston rod to ensure that it fits tightly with the piston rod.
7. Tighten the nut: Use the nut to fix the sealing sleeve on the hydraulic cylinder, ensuring that the sealing sleeve is secure.
8. Check the sealing effect: Operate the hydraulic cylinder and check if there is any leakage in the sealing element. If there is any leakage, reinstall the sealing element.
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