Fe3O4 ceramsite, preparation method and applications thereof

A technology of ferroferric oxide and ceramsite, which is applied in the direction of chemical instruments and methods, applications, ceramic products, etc., can solve the problem of degradation of airborne endotoxin without microwave radiation, achieve good application prospects, high reflection loss, and easy preparation Effect
CN110776332AActive Publication Date: 2020-02-11TIANJIN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TIANJIN UNIV
Publication Date
2020-02-11

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Abstract

The invention discloses Fe3O4 ceramsite, a preparation method and applications thereof. The preparation method comprises: 1, weighing Fe3O4 powder and bentonite according to a mass ratio of (7-9):2, adding NaHCO3 accounting for 0.4-0.6% of the total mass of the Fe3O4 powder and the bentonite, completely mixing, adding water, and uniformly blending; 2, preparing a single pellet with a diameter of 5-10 mm from the mixture obtained in the step 1 by using a pelletizer; 3, drying the pellet prepared in the step 2 for 20-40 min at a temperature of 120-180 DEG C; and 4, sealing the dried pellet, roasting the pellets at 150-250 DEG C for 20-40 min, and naturally cooling to a room temperature of 20-30 DEG C to obtain the Fe3O4 ceramsite. According to the invention, the Fe3O4 ceramsite can be used as a wave-absorbing material so as to be used for microwave radiation inactivation of biological aerosols.
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Description

technical field

[0001] The invention relates to the technical field of air pollution control, in particular to a ferroferric oxide ceramsite and a preparation method and application thereof. Background technique

[0002] There are a large number of microorganisms and their secretions (biological particles) in the air, including: bacteria, viruses, chlamydia, mycoplasma, fungal spores, algae and plant cells (including pollen), insects (including mites) and their fragments and secretions The two-phase dispersion system formed by these biological particles suspended in the air and the air is called bioaerosol. The aerodynamic equivalent diameter of the bioaerosol is between 0.5-100 μm, and the equivalent diameter of the bacteria-carrying particles is generally between 4-20 μm, among which the bacteria-carrying particles with an equivalent diameter of 1-5 μm can directly invade the alveoli and cause the initial lung infection. Harmful to human health.

[0003] Endotoxin is a h...

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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