Method for recovering zinc and manganese by waste dry batteries and directly preparing desulfurizer for industry

Abstract

The invention discloses a method for recovering zinc and manganese by waste dry batteries and directly preparing a desulfurizer for industry, which comprises the following steps that: manganese, zinc and iron of crushed waste zinc-manganese dry batteries are dissolved by dilute sulfuric acid, an undissolved substance is removed through the filtration, filtrate is neutralized by a sodium carbonate solution to produce precipitate, the precipitate is dried and then is baked to obtain a mixture of metal oxides, hydroxymethyl cellulose, No.425 cement, and attapulgite are added into the mixture to be mixed evenly, a proper amount of water is added for kneading, the band extrusion is performed on a banded extruder, and the obtained product is dried at a temperature of between 95 and 110 DEG C and is baked at a temperature of 300 DEG C to obtain the desulfurizer for industry. Compared with similar products at home and abroad, the performance index of iron-manganese-zinc series desulfurizers produced by adopting a reclaimed material of waste zinc-manganese batteries has the characteristics of high component content, high breakthrough sulfur capacity, moderate side pressure strength and low abrasion wear, various technical indexes all reach the technical indexes of the similar products at home and abroad, and the main index is better than that of the similar products at home and abroad. The method can meet the need of industrial use, and can be popularized and applied as industrially practical novel purifying agents.

Description

technical field [0001] The invention relates to resource recovery and utilization of zinc-manganese dry batteries, in particular to a method for preparing an industrial desulfurizer from ferro-zinc manganese recovered from waste zinc-manganese batteries. Background technique [0002] Zinc and manganese dry batteries are disposable power sources, the negative electrode is zinc, and the main components of the positive electrode carbon package are: carbon rod, manganese dioxide, carbon powder, acetylene black, ammonium chloride, zinc chloride, electric paste and iron shell, etc. The recycling of waste batteries is a worldwide issue. So far, there is no generally accepted economical and effective comprehensive utilization process for recycling waste zinc-manganese batteries. Batteries are a necessity closely related to ordinary people and play a big role in people's lives. There are also many products that use batteries as energy sources. However, the widespread use of batteries...

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Problems solved by technology

This method needs to be separated several times in the process. The process is difficult to handle

[0005] The dry and wet method combines the advantages of the dry method and the wet method, and the effect is better, but the process is complicated and the cost is high

[0006] Various recycling methods reported both at home and abroad at present, such as: "Research on Co-precipitation of Waste Alkaline Batteries to Prepare Manganese-Zinc Ferrite" by Xi Guoxi et al. ), Cui Peiying et al.'s "Research on the Preparation of Zinc-Manganese Compound Fertilizers Using Waste Batteries" (see: Chemistry World No. 1 P53), Cheng Jianliang et al. Volume 22, No. 1, February 2004), Zhao Dongjiang et al.'s "Research on the Recycling of Waste Zinc-Manganese Batteries" (refer to: Applied Chemicals, Volume 34, No. 10, October 2005), etc., due to high cost, economical Due to reasons such as technical impossibility or technical defects, there is no recycling technology for waste zinc-manganese batteries that is really suitable for industrialization

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