Method and device for producing micron-sized superfine iron powder through regenerative iron red

A technology of ultra-fine iron powder and micron level, which is applied in the field of metallurgical powder making, can solve the problems of difficulty in realizing large-scale industrial production and popularization and application, inability to realize continuous production well, high cost of carbonyl iron powder, etc., and achieve the source of raw materials Sufficient, less stressful, energy-saving effect
CN104439265AInactive Publication Date: 2015-03-25武汉钢铁有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
武汉钢铁有限公司
Publication Date
2015-03-25
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a method and device for producing micron-sized superfine iron powder through regenerative iron red. The method includes the steps that protective gas is injected into a reduction furnace tube, the regenerative iron red recovered in the cold rolling and acid pickling processes serves as a raw material, reducing gas is injected in the reverse direction after the raw material is conveyed to the reduction furnace tube, the raw material and the gas make sufficient contact at the heating section in the reduction furnace tube by rotating spiral blades in the reduction furnace tube, and the regenerative iron red is reduced to micron-sized superfine Fe, and Fe is output and stored through an airflow classifier after reaction. The produced micron-sized superfine iron powder is good in performance, control is easy, continuous production can be achieved, and the device is simple in structure and low in cost.
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Description

technical field

[0001] The invention belongs to the field of metallurgical powder making, and specifically refers to a method and a device for preparing micron-sized ultrafine iron powder by using regenerated iron red. Background technique

[0002] Generally, the particle size of the powder is less than 10 μm and greater than 1 μm is called low micron ultrafine powder; the particle size is less than 1 μm and greater than 0.1 μm is called submicron ultrafine powder, both of which belong to micron ultrafine powder. Generally speaking, the ideal micron-sized ultrafine powder should have the following characteristics: (1) The particle size of the powder should meet the requirements of specific application performance; (2) The particle size distribution of the powder is narrow; (3) No aggregation; (4) Oxygen-containing The amount is low and the chemical composition is uniform. Due to the change of volume and surface area of ​​micron-sized ultrafine iron powder, it will produce o...

Claims

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