Filtering and drying equipment for lithium salt strip liquor used for extraction of lithium metal in waste lithium battery

Abstract

The invention discloses filtering and drying equipment for lithium salt strip liquor used for extraction of lithium metal in a waste lithium battery. The filtering and drying equipment comprises a filtering box and a devitrification box, wherein a liquid feeding pipe and an exhaust pipe penetrate through the top of the filtering box in sequence from left to right; the surface of the liquid feedingpipe is communicated with a first solenoid valve; the bottom of the filtering box is clamped with a first filter screen; the bottom of the filtering box is provided with a groove; the top of the devitrification box is fixedly connected with a clamping ring. The filtering and drying equipment relates to the technical field of waste recovery. According to the filtering and drying equipment for thelithium salt strip liquor used for extraction of lithium metal in the waste lithium battery, a fan, a first air guiding pipe and a second air guiding pipe are cooperatively arranged, the strip liquoris dried for multiple times while heat energy is fully utilized, so that the strip liquor is thoroughly dried, and therefore, the problems that heat generated by drying in a traditional filtering anddrying device is directly discharged to waste a great quantity of heat energy, and in addition, the strip liquor can not be completely dried in a drying process can be solved.

Description

technical field [0001] The invention relates to the technical field of waste recycling, in particular to filtering and drying equipment for lithium salt back-extraction liquid used for extracting lithium metal from waste lithium batteries. Background technique [0002] Lithium battery is a primary battery that uses lithium metal or lithium alloy as the negative electrode material and uses a non-aqueous electrolyte solution. It is different from rechargeable batteries. Lithium-ion batteries are different from lithium-ion polymer batteries because the chemical properties of lithium metal are very active. , so that the processing, storage and use of lithium metal have very high environmental requirements, so lithium batteries have not been used for a long time. With the development of microelectronics technology, miniaturized equipment is increasing day by day, which puts forward high requirements for power supply. Lithium batteries have entered a large-scale practical stage, f...

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Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides lithium salt stripping solution filtering and drying equipment for extracting lithium metal from waste lithium batteries, which solves the problem that the heat generated by drying in the existing filtering and drying devices will be directly discharged, wasting A lot of heat energy, and there will be a problem that the stripping liquid cannot be completely dried during the drying process

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