Low temperature superconductivity ferromagnetic deironing device

Abstract

The invention discloses a strong magnetic iron remover with low temperature superconductivity, a cryostat is arranged on an outer cover of the invention, and the cryostat is hoisted on an inner wall of the outer cover through a pull-rod. The cryostat is provided with an indoor temperature Dewar, a 4.2K Dewar is arranged in the indoor temperature Dewar, a heat radiation screen is arranged between the indoor temperature Dewar and the 4.2K Dewar, gaps are arranged in perimeters between the indoor temperature Dewar and the heat radiation screen and between the heat radiation screen and the 4.2K Dewar, a superconducting coil can be coiled in insulation on an inner cylinder of the 4.2K Dewar, and power can be provided for the superconducting coil by a pair of two-dimensional electric currents lead-in wires. A vacuum state is between the indoor temperature Dewar and the 4.2K Dewar, and the 4.2K Dewar is filled with liquid helium20. The invention has great magnetic induction intensity, and can suck out tiny iron magnetic substances from materials, and has high working stability.

Description

technical field [0001] The invention relates to a strong magnetic iron remover, in particular to a low-temperature superconducting strong magnetic iron remover. Background technique [0002] China is the largest producer of raw coal in the world, with an annual output of more than 1 billion tons of raw coal. At the same time, China is also one of the largest coal exporting countries. China has a large reserve of high-calorie, low-ash, low-sulfur coal, which benefits Chinese and overseas users a lot. However, a serious flaw is the presence of miscellaneous iron and detonators in raw coal in China. These sundries have brought serious problems to users. In power plants, miscellaneous iron hinders the effective operation of coal crushers, and detonators cause fire and explosion hazards in coal processing and transportation equipment. Therefore, when the coal is running at high speed on the wide belt conveyor, it is not an easy task to remove the detonator and miscellaneous ir...

AI Technical Summary

Problems solved by technology

The oil-immersed electromagnetic separator has the danger of burning; the dry electromagnetic separator is expensive, the winding current density is low, and the volume is large; the air-cooled electromagnetic separator is bulky and troublesome to clean

As the industry has higher and higher requirements for the field strength index of the iron remover, the permanent magnet iron remover and the electromagnetic iron remover can no longer meet the needs of the high-end market, and there is an urgent need to develop a new type of safe, reliable and high-efficiency strong magnetic iron remover

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