Extraction and separation device of dissolving solution for neodymium iron boron waste recovery

Abstract

The invention discloses an extraction and separation device of a dissolving solution for neodymium iron boron waste recovery. The extraction and separation device comprises an extraction mechanism and a circulation mechanism, one end of the circulation mechanism is arranged in the extraction mechanism, and the other end of the circulation mechanism is arranged on one side of the extraction mechanism. The extraction and separation device has the beneficial effects that an electromagnetic chuck is electrified, fine neodymium iron boron suspended in a dissolving solution can be adsorbed on the upper surface of the overflow block, further impurity removal treatment is achieved, the dissolving solution overflows from the overflow block, the principle effect is the same as that of pouring the dissolving solution into a box, the dissolving solution and an extraction agent can be fully mixed conveniently, the extraction effect is improved, when the device is used for extraction, the mixing uniformity of the dissolving solution and the extracting agent is high, the extraction effect is remarkable, one water pump is used for completing cyclic uniform extraction and separation and discharge of an extracting solution, the design cost of the device is reduced, the mechanism design is simple, the occupied space is small, and the use cost is low.

Description

technical field [0001] The invention relates to the technical field of NdFeB processing, in particular to an extraction and separation device for a solution used for recycling NdFeB waste. Background technique [0002] Neodymium iron boron, simply speaking, is a kind of magnet. The difference from the magnets we usually see is that it is called the "magnet king" because of its excellent magnetic properties. NdFeB contains a large amount of rare earth elements neodymium, iron and boron, and its characteristics are hard and brittle. Since the surface is easily oxidized and corroded, NdFeB must be surface coated. Surface chemical passivation is one of the good solutions. As a kind of rare earth permanent magnet material, NdFeB has extremely high magnetic energy product and coercive force. At the same time, the advantages of high energy density make NdFeB permanent magnet materials widely used in modern industry and electronic technology, so that the instrument Miniaturizatio...

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Problems solved by technology

[0003] A NdFeB waste extraction and impurity removal device with the publication number CN107267764B includes an extraction tank, the extraction tank includes an outer shell and an inner shell, a solution cavity is formed between the outer shell and the inner shell, and the side wall of the inner shell is provided with a solution cavity communicating The nozzle and the solution chamber are connected to the extraction liquid tank through the liquid inlet pipe on the outer shell, and the extraction space is formed inside the inner shell, and the NdFeB waste liquid spray chamber is installed on the top of the extraction space, and the NdFeB waste liquid spray chamber passes through the waste liquid The pipeline is connected with the NdFeB waste liquid tank, and a suction pipe is arranged in the extraction space, and the liquid suction pipe is connected with the liquid inlet of the first impurity tank, and a second impurity tank is arranged under the extraction tank, and the second impurity tank passes the liquid The pipeline communicates with the bottom of the inner shell. The present invention also discloses a control method for the above-mentioned NdFeB waste extraction and impurity removal device. The NdFeB waste extraction and impurity removal device disclosed in the present invention can realize extraction The extraction agent and the waste liquid are fully mixed to improve the impurity removal effect; however, the extraction agent and the waste liquid spraying and mixing in the comparison document are one-time, and a better secondary uniform mixing cannot be achieved, which makes the extraction effect poor and the number of water pumps used is large , so that the purchase cost of the device is high, the later maintenance cost is high, and the floor space is large, and there is no impurity removal treatment for a small amount of suspended NdFeB in the solution, which affects the extraction effect

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