Scrap refers to scrapped materials, that is, materials that have been damaged or worn out after considerable use, or have even exceeded their service life, so that they have lost their original functions and have no use value. Basic introduction Chinese name: waste Foreign name: waste Explanation: scrapped material properties: material use: recovery and recycling of cutting waste Enterprise: Quad Printing Company Definition, recovery and recycling of cutting waste, processing equipment, waste conveyor , cyclone device, operating method, classification, prospects, livelihood waste reuse, profitable electronic waste, gorgeous "turn around", Definition Scrap refers to scrapped materials, that is, after considerable use, it has become dilapidated or worn out. Materials that have exceeded their service life and have lost their original functions and have no use value. Scrap Recycling and Recycling of Cutting Scrap Recycling and selling these scraps can be very tempting for printing companies that often generate large amounts of production waste. Quad Printing Company in Sussex, UK, produces an average of about 1,500 tons of printing and post-press processing waste every month, which does not include losses during signature processing and wasted white paper. Overall, the company generates about 4,500 tons of waste every month. Treatment equipment Waste conveyor is the main equipment in conveying waste. The most commonly used equipment in the waste transportation process are plate conveyor, chain conveyor and belt conveyor. The plate conveyor adopts an all-steel slat welded structure conveyor belt, which has strong impact resistance and large load-bearing capacity. It is usually constructed together with the pit trough and other materials to form a steel plate belt conveyor pit as the first-level conveying equipment for waste transportation. The transmission part adopts variable frequency stepless speed regulation. The conveyor belt of the chain conveyor is in the form of welded tape and steel plate, with strong carrying capacity; the transmission form is chain drive, with strong driving capacity, can adapt to various types of waste transportation, and has strong conveying capacity. The transmission part adopts variable frequency stepless speed regulation. Due to the special structural design of the conveyor belt, a larger installation angle can be used to convey materials. Belt conveyor is the most widely used general material conveying equipment. It uses adhesive tape as the conveyor belt and adopts belt drive. It has the advantages of long conveying distance, simple structure and low price. Because it is a serialized and standardized product, it is easy to replace and easy to maintain. Cyclone Unit The cyclone unit separates the cutting waste from dust-laden air, compresses the paper into 1,500-pound paper blocks, and discharges the filtered air into the factory or outdoors. The compressed paper can be sent to factories that produce toilet paper, or it can be remade into fine writing paper or cover paper. How the waste recycling system works: When the waste comes out of a printing processing production line with the product, its speed is about 85 meters/hour (7500 feet/minute), and then the pipe conveying the waste will turn to run horizontally and maintain lower speed (68 m/h) until they are sent to the top of the cyclonic device. At this time, the waste paper will suddenly slow down and fall freely at a speed of 3 meters/hour, eventually reaching the bottom of the cyclone device.
Category 1. Scrap metal: phosphor bronze, red copper, cup copper, white copper, red copper, bronze (62#, 65#), brass, enameled wire copper, copper scraps, aluminum, stainless steel (316.316L.304.301.202), Stainless iron, zinc alloy (slag), lead, industrial iron, gold-plated, silver-plated products and other scrap hardware and scrap non-ferrous metal recycling 2. Waste electronics: electronic pins, silver-containing tin, lead-free tin, lead-containing tin, tin slag, Tin bars, tin wires, tin ash, solder paste, circuit boards, ICs, capacitors, diodes, triodes, transformers, chargers, waste cables and wires, resistors, etc. Waste electronic recycling 3. Waste plastic: waste candles, Acrylic, silicone, nylon, film, blister, Saigon, 475, ABS, PS, PP, PC, PET, POM, PVC, PU, ??PA, TPR and other waste plastic parts recycling 4. Waste cobalt: cobalt powder, cobalt Recycling of waste products such as lithium acid oxide, lithium nickel cobalt oxide, aluminum cobalt paper, battery positive electrode sheets, negative electrode sheets, battery positive electrode trimmings, 42# punching trimmings, 79# punching trimmings, electroplating anode materials, etc. 5. Waste batteries: lithium batteries, Recycling of waste batteries such as nickel metal hydride batteries, nickel cadmium batteries, lithium ion batteries, polymer batteries, lithium power batteries, solar cells, mobile phone batteries, notebook batteries, camcorder batteries, digital camera batteries, PDA batteries, walkie-talkie batteries, etc. 6. Waste Nickel: electrolytic nickel, nickel scrap, electroformed nickel, battery conductive nickel sheet, foamed nickel, nickel strip, battery conductive nickel sheet, nickel paper, nickel foil, nickel mesh, nickel-containing alloy, nickel CD, scrap nickel tin beads , Waste nickel beads\nickelite powder and other waste recycling 7. Waste silicon wafers: waste monocrystalline silicon, polycrystalline silicon, seed crystals, broken silicon wafers, photolithography wafers, blue film wafers, solar cells, edge silicon materials, battery cells , silicon rods, silicon tailings, silicon wafers, IC-grade silicon wafers, bare chips and other waste silicon wafer recycling 8. Precious metals: gold plating, gold water, silver target, silver plating, nickel, rhodium, palladium, platinum, cobalt, tungsten Recycling of steel, titanium, and other precious metal scraps 9. Others: recycling of various waste machines, computer consumables, mechanical equipment, waste cables and wires, inventory clearance, demolition of abandoned factories 10. Classification of waste glass Waste glass can be roughly divided into the following categories : Flat waste glass, embossed waste glass, hollow waste glass, tempered waste glass, wired waste glass, high-performance hollow waste glass, glass mosaic, laminated waste glass, organic waste glass, inorganic waste glass, frosted waste glass, fireproof waste Glass, bulletproof waste glass, special waste glass. Prospects Reuse of domestic waste We produce a lot of domestic waste every day. If it is simply landfilled, the cost of a ton of waste will be 200 to 300 yuan, and it will also occupy a lot of land and may cause land pollution. Domestic waste, such as plastic bottles, cans, old newspapers and periodicals, and glass bottles, are sold to waste companies. Wuhan waste recycling companies then send them to plastic, metal, paper processing plants, and glass factories for processing and production, and then they can be used as raw materials to re-make various products. In addition to reducing the amount of waste, it also saves materials and energy. According to Qingdao Laoshan Glass Company, through continuous improvement of waste glass utilization technology, the company's utilization rate of recycled waste glass has increased from the initial 30% to 40%, 60% or even 80%. At the same time, the company can also save 4,200 tons of soda ash, 2,108 tons of coal, and 380,000 kilowatt hours of electricity every year, which saves money and is environmentally friendly, killing two birds with one stone. Electronic waste is profitable Discarding electrical appliances can extract many valuable metals, such as gold, platinum, and indium. Needless to say, gold and platinum, indium is called a metallic vitamin, and its price has risen from US$70 per kilogram to US$1,200. If the waste batteries in old mobile phones are recycled, 200 grams of gold can be extracted from 1 ton. You must know that generally only 2 grams of gold can be extracted per ton of gold-containing ores. At present, the annual profits of electronic waste disposal companies in the United States have reached 25 to 30 million US dollars (according to statistics, it costs US$300 to mine 1 ounce of gold, and only US$10 to recover 1 ounce of gold). Yongkang, known as China's "Hardware Capital", is currently the largest scrap metal recycling base in the country. There are more than 200 scrap metal processing and training companies. The annual scrap metal transaction volume reaches 6 billion to 7 billion yuan and produces 250,000 alloy aluminum. Around tons.
Industrial waste has a gorgeous "turn around". The most common and annoying kitchen waste at home - leftovers, peels and leaves, can be "on-site" composted by biotechnology, and each ton can produce 0.3 tons of organic fertilizer. Many combustible wastes can "replace" coal and be thrown into the sea to generate electricity and "heat". France recycles more than 40 million tons of waste every year. Among them, 20% of the waste has been recycled and reused, mostly metal, glass, and paper; 13.5% has been used for composting; 29% has been energy recovered, that is, used to generate electricity or heat; 1.5% has been simply burned; other wastes have been stored in a safe manner. Disposal by landfill method. This provides France with 3,700 GWh of electricity and 7,300 GWh of thermal energy, as well as 1.8 million tons of organic fertilizers. Japan currently has many waste-to-energy plants, and countries such as Denmark and Switzerland have domestic waste combustion rates reaching 80%.