Recycling method of solid waste

A technology of solid waste and grinding material, which is applied in the field of reuse of MnZn soft magnetic waste, can solve the problems of difficulty in obtaining good benefits and inefficient utilization

Active Publication Date: 2014-09-17
ZHAOQING CHAMPION FERRITE TECH
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Problems solved by technology

[0004] The object of the present invention aims at the deficiency that it is difficult to obtain good benefits by using high-cost chemical treatment methods or low-efficiency utilization and direct landfill methods for existing MnZn grinding materials. Miscellaneous, by adjusting the formula, adding some elements such as iron, zinc, copper, etc., and then performing ferrite processes such as grinding, spray drying, molding, and sintering, the reuse technology of high-performance soft magnetic ferrite materials is prepared.

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Embodiment Construction

[0025] According to the invention figure 1 The shown sintering temperature curves embody the present invention, but the present invention is not limited to these examples.

[0026] (1) Grinding material pulping: According to the ratio of material: water = 1:1, the grinding material is dispersed in a ball mill to make a diluted slurry.

[0027] (2) Screening: Use a 40-mesh screen to remove impurities in the abrasive slurry.

[0028] (3) Ingredients: According to the solid content of the grinding slurry, according to the ratio of the embodiment in Table 1, add other main components: nickelous oxide, zinc oxide, copper oxide, magnesium oxide, ferric oxide, etc., or add at the same time Subcomponents such as bismuth oxide, calcium carbonate, and silicon dioxide.

[0029] (4) Ball mill: Mix the materials evenly with a ball mill.

[0030] (5) Circular sand mill: Circular sand mill for 1 to 6 hours, and the particle size of the slurry is controlled at 0.9 to 1.5 μm.

[0031] (6) ...

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Abstract

A recycling method of solid wastes is as below: conducting simple sieving treatment on a MnZn grinding material, adding MgO, CuO, NiO, ZnO, Fe2O3, Bi2O3, CaCO3 and SiO2, producing MgMnZn, NiMnZn or other high performance composite ferrite body materials by a ferrite process, wherein the MgMnZn, NiMnZn or other high performance composite ferrite body materials can be used for the production of anti-electromagnetic interference magnetic element and inductance filter element. The recycling method of solid wastes provided by the invention uses MnZn waste as the raw material, achieves a closed cycle from raw materials to products to wastes to raw material through formula design and process innovation, and realizes high value resource of MnZn ferrite wastes.

Description

technical field [0001] The invention belongs to the technical field of soft magnetic ferrite, and in particular relates to a recycling technology of MnZn soft magnetic waste. Background technique [0002] Manganese zinc ferrite material is an important functional material in the electronic information industry and home appliance industry. It is also developing rapidly in my country and has a broad market prospect. During the preparation of manganese-zinc materials, 10% to 20% of grinding waste is generated: grinding material, commonly known as "grinding mud". According to my country's annual output of 500,000 tons of MnZn soft ferrite, the grinding amount is calculated at 15%, and 75,000 tons of grinding materials are produced a year. Many scholars have studied the reuse of MnZn grinding materials. There are two main methods: one is to use chemical methods to separate the MnZn grinding materials by leaching and roasting a single oxide of zinc, iron and manganese. The cost ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/26B09B3/00
Inventor 廖晓舟
Owner ZHAOQING CHAMPION FERRITE TECH
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