Method for recycling iron powder in magnetic filters of cold rolling factory

A recovery method and filter technology are applied in the field of iron powder recovery from magnetic filters in cold rolling mills, which can solve the problems of long cleaning time and high cleaning temperature, and achieve the effects of short cleaning time, lower cleaning temperature and lower temperature.
CN102581270AInactive Publication Date: 2012-07-18石家庄市宏晟环保科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
石家庄市宏晟环保科技有限公司
Publication Date
2012-07-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for recycling iron powder in magnetic filters of a cold rolling factory. The method includes steps of pre-treating the magnetic filters of the cold rolling factory; cleaning obtained iron powder with oil by cleaning agent and rinsing the iron powder with oil cleaned by the cleaning agent by deionized water; and finally drying the iron powder. The iron powder with oil is cleaned by the cleaning agent and rinsed by the deionized water by the aid of an ultrasonic cleaning method. Oil stain on the surface of the iron powder can be peeled off by the aid of a cavitation effect of ultrasonic waves, on the one hand, vibration of the iron powder is caused by the ultrasonic waves, peeling speed of the oil stain of the surface of the iron powder is increased, cleaning time is shortened, and cleaning temperature is reduced. In addition, the method has the advantages of short cleaning time and low temperature and energy consumption, purity of the obtained nanometer iron powder is high, and the quality of the obtained nanometer iron powder is high.
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Description

technical field

[0001] The invention relates to a method for recovering iron powder, in particular to a method for recovering iron powder in the magnetic filter of a cold rolling mill. Background technique

[0002] A lot of fine iron powder will be produced in the thin plate production process of the cold rolling mill and will continue to enter the emulsion. In order to keep the emulsion clean, a magnetic filter device is used to remove the iron powder in the emulsion to obtain a magnetic filter containing iron powder. After research, the particle size of iron powder in the magnetic filter of the cold rolling mill is at the nanometer level, which has high economic value. The magnetic filter of the cold rolling mill is a mixture of iron powder and rolling oil. The iron powder is wrapped in oil and can only be burned or buried as fuel oil, which pollutes the environment and wastes resources. The application number is 200410012152.X, which discloses a method for recovering nan...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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