Circuit board recycling equipment how to recycle used circuit boards
Release Time：2022-12-28 Source：Lithium battery recycling equipment Share：
Discarded circuit board structure is relatively special, mainly in: on the one hand, the two-dimensional size is very large, its thickness is generally about 1.6mm, the length is generally not greater than 200mm, the width is not greater than 150mm, so it is difficult to crush the circuit board through a crushing to the particle size of 1mm or less, so that the metal and non-metal basically completely dissociated; discarded circuit board is composed of more complex composite materials, thus So that its toughness is better, hardness is also relatively high, and has good resistance to bending performance, therefore, waste circuit board in the squeezing pressure is not easy to break. Circuit board recycling equipment crushing process mainly includes coarse crushing and fine crushing two processes, coarse crushing using roller crusher extrusion shear crushing, fine crushing using hammer crusher hammer crushing.
Hammer crusher is more suitable for waste circuit board crushing equipment, hammer crusher uses a single rotor, multiple hammer head square motor, coupling, bearing housing, bearings, housing, rotor, bracket, hammer head and other components. The waste circuit board is put into the roller crusher for coarse crushing, the coarse crushing knife fits into the groove, the coarse crushing knife is driven by the large pulley rotation, the circuit board is extruded and sheared into a square strip with side length of 10~20mm, then by gravity through the connecting barrel into the crushing chamber of the fine crushing part, the hammer head of the hammer crusher is mounted on the turntable, the turntable is mounted on the hammer shaft, the material enters the crushing chamber and is crushed by the high speed impact of the hammer head. The crushed material gets kinetic energy at the same time and rushes to the crushing plate at high speed to be crushed twice, and then falls to the screen plate, and the waste circuit board is further crushed by the extrusion and grinding of the hammer head and the mutual impact between the material particles.
Xingmao environmental protection circuit board recycling equipment crushing separation technology with electrostatic separation method to recover metal from waste circuit boards. Electrostatic sorting is the use of materials in the high-voltage electric field and the difference in electrical properties to achieve the purpose of sorting, when the material through the rotation of the drum to the corona electrode action of the high-voltage electric field, the material by a variety of electric power, centrifugal force, gravity reuse. Due to the different electrical properties of various materials, the different force states make the material fall with different trajectories, thus separating the metal and non-metal mixture. Advanced physical method of recycling separation and recovery process, high pressure electrostatic separation technology separation accuracy, to ensure the metal recovery rate. Environmental protection, high comprehensive utilization rate, high added value and other advantages, is the development trend of electronic waste treatment.
Waste circuit board crushing and sorting fully closed processing, no pollution, metal recovery rate of 98%. Using mechanical crushing method to crush circuit boards, not only energy saving, and high metal separation rate; and then according to the density difference between the two with the sorting method to recover the copper in the waste circuit boards, the remaining non-metallic materials through a specific process made of polymer materials products. Low energy consumption, no secondary pollution in the production process, to achieve the dual purpose of energy saving and emission reduction and resource recovery. Circuit board recycling equipment is a variety of waste circuit boards, circuit boards, copper-clad boards, circuit board edge material for the separation of copper metal and resin powder for recycling equipment.