Method for preparing soft magnetic manganese-zinc-iron composite material by using manganese-containing waste liquid and zinc mud produced in the production of hydroquinone

A technology of hydroquinone and composite materials, applied in the direction of magnetic properties of inorganic materials, can solve the problems of affecting product quality, high production cost, harsh environment, etc., and achieve the effect of fully qualified electromagnetic performance and good shear resistance.

Active Publication Date: 2015-08-19
CHONGQING SHANGJIA ELECTRONIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the production process, high-purity and high-quality raw materials must be used. The requirements for raw materials such as iron red, manganese tetraoxide, and zinc oxide are very high. The requirements for purity and impurities are relatively strict, and the environment is harsh during mechanical mixing. Simultaneous production very high cost
The materials produced will also have defects such as crystal spots and brittleness on the final magnetic device, which seriously affects product quality
[0003] In order to overcome the above shortcomings, people have adopted the co-precipitation process to prepare ferrite, but it has not been mass-produced industrially. The main reasons are two points (1) the use of chemical raw materials and metal raw materials, the cost is high
(2) It is a processed magnetic device, which has serious quality defects, especially the physical properties that cannot meet the specified quality requirements, such as: surface mottled and internal crystal spots of the magnetic device, edge and corner drop during die-cutting of the magnetic device Many technicians have been looking for reasons from the purity of raw materials and the firing of magnetic cores, but have not found a solution
It has not been used to prepare soft magnetic zinc-manganese-iron composites

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1. Measure 3.0L of acid-containing manganese water produced by the production of hydroquinone (this water contains 47g / l of manganese and 40g / l of sulfuric acid), pour it into a 5L beaker, stir and add the zinc produced in the hydroquinone reduction section Mud 91g (containing 55% zinc), after leaching, filtered to obtain the filtrate. Add 0.075 g of polyferric sulfate to the filtrate, stir, then filter to obtain the filtrate, add flocculant again to the filtrate, and filter to obtain 3 L of purified liquid, which contains 47 g / l of manganese and 16.7 g / l of zinc.

[0023] 2. Co-precipitation: Measure 3L of the purification solution containing manganese and zinc, pour it into a 5L beaker, add an appropriate amount of ammonium bicarbonate, so that all the manganese and zinc are co-precipitated and react to form carbonate, and the co-precipitated powder is washed with water Qualified co-precipitation powder is obtained.

[0024] 3. Pre-decompose the obtained co-precipita...

Embodiment 2

[0029] 1. Measure 80M of manganese acid water 3 (containing manganese 47g / l, containing sulfuric acid 40g / l), pumped into 100M 3 In the reaction kettle, stir and add 2.43T of zinc sludge produced in the hydroquinone reduction section, filter after leaching, add 2g of flocculant PAM to the filtrate, stir to obtain filtrate, add flocculant to the filtrate twice, and filter to obtain a purified solution 80M 3 , this solution contains 47g / l manganese and 16.7g / l iron.

[0030] 2. Co-precipitation: Measure 65M of the purification solution containing manganese and zinc 3 , pumped into 100M 3 Add an appropriate amount of ammonium bicarbonate to the reaction kettle, so that all the manganese and zinc are co-precipitated and reacted to form carbonate, and the co-precipitated powder is washed with water to obtain a qualified co-precipitated powder.

[0031] 3. Wash and filter the prepared co-precipitation powder again with a belt filter, then send it into a suspension furnace with a...

Embodiment 3

[0036] 1. Measure 3.0L of acid-containing manganese water produced by the production of hydroquinone (this water contains 47g / l of manganese and 40g / l of sulfuric acid), pour it into a 5L beaker, stir and add the zinc produced in the hydroquinone reduction section Mud 91g (containing 55% zinc), after leaching, filtered to obtain the filtrate. Add 0.08 g of polyferric sulfate to the filtrate, stir, and then filter to obtain the filtrate. The filtrate is added to the flocculant again and filtered to obtain 3 L of purified liquid, which contains 47 g / l of manganese and 16.7 g / l of zinc.

[0037] 2. Co-precipitation: Measure 3L of the purification solution containing manganese and zinc, pour it into a 5L beaker, add an appropriate amount of ammonium bicarbonate, so that all the manganese and zinc are co-precipitated and react to form carbonate, and the co-precipitated powder is washed with water Qualified co-precipitation powder is obtained.

[0038] 3. Pre-decompose the obtained...

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PUM

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Abstract

The invention discloses a method for preparing a soft magnetic manganese-zinc-iron composite material by using manganese-containing waste liquor and zinc sludge produced during production of p-dihydroxybenzene. The method comprises the following steps: adding the zinc sludge into the manganese-containing waste liquor, leaching under stirring, filtering, adding a flocculating agent into filtrate to remove silicon and aluminum impurities, adding ammonium bicarbonate into purified liquid containing manganese and zinc for co-precipitating, and washing to obtain co-precipitated powder; calcining the co-precipitated powder for decomposing, and washing by using organic acid to obtain a manganese-zinc composite material; and adding iron sesquioxide or a mixture of iron sesquioxide and at least one of manganous-manganic oxide and zinc oxide into the manganese-zinc composite material, and pre-burning to obtain the soft magnetic manganese-zinc-iron composite material. By taking the manganese-containing waste liquor and the zinc sludge produced during production of p-dihydroxybenzene as raw materials, the problem of environmental pollution is solved, high-value utilization of waste is fully realized, and a manufactured magnetic device is free from crystal spots, is non-crispy, and has high shearing resistance as well as fully-qualified physicochemical indexes and electromagnetic performance.

Description

technical field [0001] The invention belongs to a method for preparing a soft magnetic manganese-zinc-iron compound material, and in particular relates to a method for preparing a soft magnetic manganese-zinc-iron compound material by using manganese-containing waste liquid and zinc mud produced in the production of hydroquinone. Background technique [0002] Soft magnetic ferrite is easy to magnetize and demagnetize under weak magnetic field. It is mainly used for various inductive components, such as magnetic cores for filters, transformers, antennas, etc., and magnetic heads for recording and video recorders. At present, the production of soft magnetic Mn-Zn-Fe powder mostly uses the traditional ceramic process. In the production process, high-purity and high-quality raw materials must be used. The requirements for raw materials such as iron red, manganese tetraoxide, and zinc oxide are very high. The requirements for purity and impurities are relatively strict, and the e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F1/34C04B35/26C04B35/622
Inventor 马俊才黎树春符靓廖新仁赵飞
Owner CHONGQING SHANGJIA ELECTRONIC CO LTD
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