Copper has been subjected to many stages from the underground mining to the end of copper products, such as wires or pipes. Mining, breaking The initial stage of all raw copper is the mining of sulfide ore and oxidized ore, which, after excavation or blasting, is broken into walnut-sized ore. Grinding The broken ore is ground into a powder in a ball mill or rod milled large crusher . The copper in the powder is less than 1%. The sulphide ore enters the beneficiation stage, and the oxidized ore enters the leaching tank as programmed. Dressing The ore after beneficiation contains about 15% copper. The waste is discarded and the water is recovered. The tailings containing copper oxide are programmed into the leaching tank or returned to the surrounding tailings pond. After beneficiation, cathode pure copper can be obtained in two different ways: leaching-electrolysis or smelting-electrolytic refining. Leaching The oxidized ore and tailings are leached with a weak acid solution to produce a dilute copper sulfate solution. Electrolytic deposition The copper-rich solution is processed and enters the cell. When energized, the copper ions in the solution move directly to the initial plate made of pure copper sheet. Precious metals can be extracted from the solution. Smelting After several melting and refining processes, the copper content continues to increase, which in turn gives matte and blister copper and the final 99% pure copper. The recovered copper starts from remelting and is used again. Electrolytic refining The cast anode plate, which is almost pure copper, is immersed in the electrolytic cell. Upon energization, copper ions are transferred from the anode to the starting plate made of pure copper sheet, where they are deposited to form 300 pounds of cathode copper. Gold, silver and platinum can be recovered from the used electrolyte. Pure copper cathode plate 99.9% pure copper cathode can be transported to a processing plant or foundry for melting. Cathode copper can also be cast into wire rods, blanks, ingots or ingots, typically as pure copper or alloyed with other metals. Cathode copper is converted into The wire rod - 1/2 inch in diameter, can be drawn into various specifications of pure copper wire by the wire factory. Billet - 30 feet long and 8 inches in diameter pure copper, which is sawn and then extruded and drawn into rods and bars of various sizes and shapes. Garden bars can be used for forging. Ingot-pure copper billets, typically 8 inches thick and up to 28 feet in length, can be hot rolled-cold rolled to produce sheets, strips and foils. Ingots - pure copper blocks, which can be used to alloy with other metals or used by foundries to produce castings .
Material Selection:
1. Frame: 2MM thicknesses cold-roll Stainless steel.
2. Motor: Germany SEW brake motor (outer), power 0.75KW, power supply 220V.
3. Control system: Imported Japan Mitsubishi converter and PLC to control of electric box (150%1HZ)
4. Opening & closing speed: 0.6-1.5m/s (adjustable).
5. Safety Device: Korea Photocell Sensor, emergency stopping reaction when sensing obstacles.
6. Curtain: France high-density polyester fiber and the surface coating processing, thickness 0.8MM, variety colors can be chose: Red, yellow, blue, green, orange, gray, white, transparent, etc. Tensile strength: 4000/3500N/5cm, tear strength 600/600N. Fire-proofing level: German standard DIN75200 Usage temperature: -30 ° C +70 ° C.
7. Wind resistant: The Aluminium alloy Reinforce Girder to increase wind resistant effect.
8. Curtain replacement function: Aluminium alloy Reinforce Girder is loaded between 2 pieces Curtain, can be replaced easily if any curtain broken, save your cost.
9. Transparent window: 1.2MM thickness transparent PVC window, size and location is up to your request, more safer.
10. Seal: Seal brush are Installed inside the guides, and the special bottom design, to fit any uneven ground.
11. Cotrolling way: Push button + radar sensor, very convenient.
12. Limiting Switch: Mechanical limiting switch, easily and exactly.
13. Emergency STOP: With emergency stop button on control panel, can stop easily by
Hand once disconnect or accident
14 Fault recovery function: All Hongfa's production is with fault recovery function, system will self-recovery after power cut off.
15. Delivery time: About 7 business days with contract and deposit confirmed.
16. Pyament item: 50% before production, and the other 50% before shipment.
17. Warranty Details: We provide 12 months warranty for all doors and accessories (except man-made disasters, Irresistible natural disasters, ect^).
We have many professional engineers with rich experience, qualified products, perfect service system, and good cooperation relationship with many famous companies.
PVC high speed door, plastic roll up doors, high speed fabric roll up doors, high speed rolling doors, pvc roll up doors SHENZHEN HONGFA AUTOMATIC DOOR CO., LTD , https://www.hongfafrud.com