Attraction and removing equipment for clearing away magnetic impurities in scrap silicon materials

Abstract

Attraction and removing equipment for clearing away magnetic impurities in scrap silicon materials comprises a horizontally-arranged conveying belt, a rack, a storage hopper, electromagnet blocks, horizontal linear slide rails and driving air cylinders, the horizontal linear slide rails are horizontally fixed to the rack above the conveying rack at intervals, the horizontal linear slide rails are perpendicular to the conveying direction of the conveying belt, the electromagnet blocks are arranged on a sliding way composed of the horizontal linear slide rails in a sliding mode, cylinder bodies of the driving air cylinders are fixed to the rack, piston rods are perpendicular to the conveying direction of the conveying belt, the extending ends of the piston rods are hinged to the electromagnet blocks, the electromagnet blocks and the storage hoppers are arranged above the conveying belt, the electromagnet blocks are arranged between the material receiving end and the discharging end of the conveying belt, the distance between the electromagnet blocks and the upper end face of the conveying belt is controlled, and therefore the electromagnet blocks can effectively attract the magnetic impurities on the conveying belt. The attraction and removing equipment is used for thoroughly attractinging and removing the magnetic impurities in the silicon materials in an unintermittent mode, work of magnetic impurity manual sorting in the silicon materials can be relieved, and attraction and removing are thorough, rapid and efficient.

Description

technical field [0001] The invention relates to a material screening technology for solar silicon chip production, in particular to a suction device for removing magnetic impurities in waste silicon material for solar silicon chip production. Background technique [0002] With the rapid development and continuous promotion and application of solar cells in recent years, the market demand for solar cells is increasing. With the development of the photovoltaic industry, reducing the production cost of a company has become the most effective competitiveness of a company, and the cost of raw materials is the most important part of the production cost of photovoltaic enterprises. In every production joint of silicon wafers, waste silicon materials will be produced. In order to save production costs, many manufacturers will process these waste silicon materials and return them to the furnace for reuse. It has become an effective way for photovoltaic enterprises to reduce producti...

AI Technical Summary

Problems solved by technology

The metal impurities in it have a great impact on the subsequent utilization of the furnace, which will directly affect the internal performance indicators of the silicon wafer, so that the photoelectric conversion rate of the silicon wafer battery cannot meet the requirements, that is, the product quality of the silicon wafer is difficult to guarantee, so the waste silicon must be treated. iron removal

Images