Preparation method of far infrared antibacterial ceramic

[0022] The preparation method of the far-infrared antibacterial ceramics of this example, its formula is: by mass percentage, vanadium titanium waste slag 30%, bastnaesite 3%, lanthanite 4%, xenotime 4%, Minjiang clay 15% , 25% quartzite, 7% calcite, 3% sepiolite, 5% kaolinite, 4% limestone.

[0023] The chemical composition of vanadium-titanium waste slag mainly contains Fe 2 o 3 45~65%, SiO 2 10-20%, TiO 2 8~15%,Na 2 O 2~4%, Al 2 o 3 4-8%, CaO 1-3%, MgO 1-2%. The shape is any one or a combination of granular, sandy or powdery.

[0024] The chemical composition of bastnaesite mainly contains CeO in mass percentage 2 50-70%, SiO 2 1~2%, CaO 3~7%, Fe 2 o 3 2 to 5%. The shape is any one or a combination of granular, sandy or powdery.

[0025] The chemical composition of phosphatite mainly contains CeO in mass percentage 2 15~25%, La 2 o 3 30-45%, ThO 2 10-15%, CaO 5-12%. The shape is any one or a combination of granular, sandy or powdery.

[0026] The c

[0034] The preparation method of the far-infrared antibacterial ceramics of this example, its formula is: by mass percentage, vanadium titanium waste slag 35%, bastnaesite 4%, lanthanite 2%, xenotime 5%, Minjiang clay 17% , Quartzite 19%, Calcite 6%, Sepiolite 4%, Kaolinite 3%, Limestone 5%.

[0035] Its procedure is:

[0036] (1) After the natural minerals and vanadium-titanium waste slag are mixed according to the above formula, a slurry cosolvent is added for wet ball milling to obtain a slurry with a ball milling fineness of 325 and a quasi-sieve residue of 2.0%; the slurry cosolvent is tripolyphosphoric acid Sodium, in mass percentage, its addition is 3% of slurry.

[0037] (2) The slurry is subjected to spray granulation and dry pressing at 15 MPa to obtain a green body with a moisture content of 6%.

[0038] (3) The green body was demolded and dried at 105°C for 100 minutes, and then fired at 1080°C for 3.5 hours and 25 minutes for holding time to obtain far-infrared antib

[0042] The preparation method of the far-infrared antibacterial ceramics of this example, its formula is: by mass percentage, vanadium titanium waste slag 30%, bastnaesite 5%, lanthanite 4%, xenotime 3%, Minjiang clay 10% , 25% quartzite, 7% calcite, 2% sepiolite, 6% kaolinite, 8% limestone.

[0043] Its procedure is:

[0044] (1) After batching the natural minerals and vanadium-titanium waste slag according to the above formula, add a slurry cosolvent for wet ball milling to obtain a slurry with a ball milling fineness of 325 and a quasi-sieve residue of 5.0%.

[0045] (2) The slurry is subjected to spray granulation and dry pressing at 25 MPa to obtain a green body with a moisture content of 7%.

[0046] (3) The green body is demolded and dried at 120° C. for 90 minutes, and then fired at 1150° C. for 5 hours and 15 minutes for holding time to obtain a far-infrared antibacterial ceramic product.

[0047] The performance indicators are: far-infrared emissivity (within 8-14μm):