The way of paper-plastic separator and separation method
Paper-plastic separator is the first choice of equipment for separating and recycling paper-plastic compound, it has high output, low power consumption, small water consumption, good separation effect, the purity of the separated plastic can reach more than 95%, used for the production of plastic granules; the separated pulp has high wetting degree, can be used for papermaking and pulp molding. What are the methods of paper-plastic separation?
1. Thermal separation method
The use of heating to change the plasticity of the paper-plastic separation method
(1) hot cylinder method: separation device is electrically heated chrome-plated barrel and hollow cylinder with scraper (drum), scraper and heating cylinder wall, the two reverse rotation, the bottom of the cylinder connected to a trough. The material is added from the feed, and the plastic component of it starts to melt once it comes into contact with the hot drum and adheres to the wall of the drum, which is scraped off by the scraper and falls into the trough. This method can be more than 90% of the plastic and paper separation, has been separated from the plastic content of paper is very small, can be controlled at less than 1%.
(2) Hot airflow method: the use of plastic film shrinkage in the presence of heat, reducing the principle of specific area to achieve the separation of plastic film and paper. The film and paper mixture sent to the heating zone: (1) the heating zone can be an agricultural grain dryer, granular, so that its surface area is reduced, and then the mixture of it and the paper into the air separator, the air flow will be the mixture of paper away, and thermoplastic particles will fall to the bottom of the separator. This method can almost separate the plastic and paper*. (2) heating to go can be a heated oven, there are two layers of upper and lower conveyor belts with paper-plastic composite materials passing through it, the paper and plastic * separated.
2. Wet separation method
The light material obtained from the dry separation equipment is fed into the churning machine, and the churned pulp flows out from the small holes in the sorting plate, leaving the plastic to be discharged from a separation outlet, and then sent to the dewatering machine for dewatering, and then sent to the air separator for separation.
3. Electric separation method will be a mixture of paper and plastic by a vibrating feeder into the separator, into the rotating crushing drum, and then sent to the corona area formed between the wire electrode and the crushing, the paper is sucked to the electrode, while the plastic is still attached to the drum, with the rotation of the drum plastic fall to the bottom of it collected. The humidity has a great influence on the separation result when this method is used. When the humidity of the mixture is 15%, although the paper and plastic can be separated, the plastic will still be contaminated by a large amount of paper, and when the humidity is increased to more than 50%, the plastic and paper can be separated.
Waste paper-plastic composite bags is a zai life use of resources, although the current recycling of paper-plastic composite bags and recycling, there are many kinds of methods, but limited to the low recovery rate, high processing costs, can not play a role; Shandong Jin Shuanglian Environmental Protection Equipment Co., Ltd. after continuous research, continuous testing, continuous improvement in the design and production of paper-plastic separation equipment separation efficiency, simple operation; separation of Pulp production of recycled paper; plastic production granules; for paper and plastic recycling manufacturers to create a considerable profit; to achieve good circular economic benefits; SUNY GROUP Environmental Protection Equipment Co.
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