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High-performance environment-friendly hexagonal permanent magnetic ferrite material and preparation method thereof

A permanent magnet ferrite, environment-friendly technology, applied in magnetic circuits characterized by magnetic materials, inductance/transformer/magnet manufacturing, inorganic material magnetism, etc., can solve the problem that hexagonal permanent magnet ferrite materials cannot meet the requirements of high performance and Environmental protection and other issues, to achieve the effect of reducing development and utilization, reducing quantity and high stability

Active Publication Date: 2019-06-07
SICHUAN MAGUNION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the technical problem that the hexagonal permanent magnet ferrite material existing in the background technology cannot satisfy high performance and environmental protection at the same time, the present invention proposes a high-performance and environment-friendly hexagonal permanent magnet ferrite material and its preparation method

Method used

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  • High-performance environment-friendly hexagonal permanent magnetic ferrite material and preparation method thereof
  • High-performance environment-friendly hexagonal permanent magnetic ferrite material and preparation method thereof
  • High-performance environment-friendly hexagonal permanent magnetic ferrite material and preparation method thereof

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preparation example Construction

[0034] The main component of the high-performance environment-friendly hexagonal permanent magnet ferrite material of the present invention is calculated as an oxide by mole percentage, and the dopant component is calculated by weight percentage as an oxide. Its preparation method specifically comprises the following steps:

[0035] Step 1. Ingredients:

[0036] with BaCO 3 , Fe 2 o 3 , CaCO 3 、La 2 o 3 , ZnO, MnO and Co 2 o 3 As a raw material, according to "1.3 ~ 6.3mol% BaCO 3 , 78.3~87.2mol% Fe 2 o 3 , 1.2~6.2mol%CaCO 3 , 0.8~6.2mol% La 2 o 3 , 0.3~1.1mol% ZnO, 0.4~1.2mol% MnO, 0.8~7.2mol% Co 2 o 3 "The ratio of weighing, mixing, preparation to obtain the initial powder;

[0037] Step 2, a ball mill:

[0038] Mix the initial powder obtained in step 1 evenly in a ball mill for 12 to 21 hours;

[0039] Step 3, pre-burning:

[0040] Dry the ball abrasive obtained in step 2, and pre-fire it in a sintering furnace. The pre-fired temperature is 1200-1350°C, an...

Embodiment

[0055] A method for preparing a high-performance environment-friendly hexagonal permanent magnet ferrite material, comprising the following steps:

[0056] Step 1. Ingredients:

[0057] with BaCO 3 , Fe 2 o 3 , CaCO 3 , La 2 o 3 , ZnO, MnO and Co 2 o 3 As a raw material, weigh and mix according to the ratio in the table below to prepare the initial powder;

[0058] Embodiment 1~4 master formula sees the following table:

[0059]

[0060] Step 2, a ball mill:

[0061] Mix the initial powder obtained in step 1 evenly in a ball mill for 16 hours;

[0062] Step 3, pre-burning:

[0063] Dry the ball abrasive obtained in step 2, and pre-fire it in a sintering furnace. The pre-fired temperature is 1300°C, and the pre-fired time is 3 hours. After completion, the temperature is naturally lowered to room temperature with the furnace to obtain a pre-fired powder;

[0064] Step 4, doping:

[0065] Add a dopant to the calcined powder obtained in step 3, and the content of t...

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Abstract

The invention discloses a high-performance environment-friendly hexagonal permanent magnetic ferrite material, and belongs to the technical field of material preparation. A main formula of the permanent magnetic ferrite material is as the follows: 1.3-6.3 mol% of BaCO3, 78.3-87.2 mol% of Fe2O3, 1.2-6.2 mol% of CaCO3, 0.8-6.2 mol% of La2O3, 0.3-1.1 mol% of ZnO, 0.4-1.2 mol% of MnO and 0.8-7.2 mol%of Co2O3. Based on 100 wt% of the main formula, a dopant consists of the following components based on oxides: 0.2-0.6 wt% of SiO2, 0.5-1.5 wt% of CaCO3, 0.2-0.5 wt% of H3BO3, 0.2-1.2 wt% of Bi2O3, 0.1-1.0 wt% of La2O3 and 0.1-0.5 wt% of an isobutene-maleic anhydride copolymer (ISOBAM). According to the permanent magnetic ferrite material disclosed by the invention, Sr element in the main formulais completely replaced, and meanwhile, high B<r>, high H<cj> content and high (BH)<max> are achieved.

Description

technical field [0001] The invention belongs to the technical field of ferrite material preparation, and in particular relates to a high-performance and environment-friendly hexagonal permanent magnet ferrite material and a preparation method thereof. Background technique [0002] With the continuous development of industrial automation, home automation, and automobile intelligence, the market demand for micro motors is increasing, which promotes the rapid development of permanent ferrite materials. According to data from the National Bureau of Statistics, the permanent magnet ferrite used in micro motors increased from less than 100,000 tons in 2005 to 230,000 tons in 2015. The sharp increase in the production of permanent ferrite has brought another thorny problem - environmental pollution; as one of the raw materials of permanent ferrite, the mining of strontium carbonate is highly polluting: metal strontium generally exists in the form of strontium sulfate in nature , c...

Claims

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Application Information

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IPC IPC(8): C04B35/40C04B35/622H01F1/11H01F41/00H02K1/02
Inventor 邬传健周华锋唐明星余忠郭荣迪戴越李元兴孙科蒋晓娜兰中文
Owner SICHUAN MAGUNION TECH CO LTD
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