Wow, 5 days. Thats a long milling time.

I can't really suggest a media specification, but have you considered other types of mills? I assume the isopropanol means that you want to avoid water. I wonder if you have looked at alternatives to your process, both in terms of the mill type and technique? ■

In my opinion, you will have to use several sizes of media.

I think that to reach 1 micron you need relatively small media (1-1.5 mm media to start).

However such media will not do much to 100micron size particules in a resonable time.

I don't know what type of mill you will be using. If you use a continuous type mill, circulating the material with alchool may not be easy.

If you using a batch process, I suggest that you control the viscosity of the slurry and the RPM of the mill as to provide the greatest turn over of the media.

Good luck

Antonio Reis

Vitrom Mfg Consultants

Your Process and Manufacturing Solutions

Phone: 209.834.1900

Fax: 209.834.1039

www.vitrom.com ■

if you"ll need large volume milling in short time please call us

regards

ezry akkerman

see grinding innovations from russia on this forum dated 10/5/04 ■

Dear sir,

I don't know what's kind of your ceramic powder,what's the MOh's?

If you want to involves grinding a ceramic powder to a general size of one micron,i think you will think the following:

1.In the horizontal Patterson ball mill,we advise you can use the alumina ball sizes form 6mm,8mm,10mm.In my coustomer, they grinding the alumina poweder which only general size of 1.8 micron using 12hour.

2.If you want a general size of one micron,Pls using the another machine and the small size of grinding media (alumina ball or zirconia bead).

3. The technology and equipment of processing Zircon sand super fine grinding (d50¡Ü0.8Ìm,d90¡Ü2.5Ìm,d100¡Ü5.0Ìm) you can see http://www.cdtceram.com.cn/encp4.htm

David xu

Tel:+86-799-6612508

Fax:+86-799-6612888

Mail:gncdtc@163.net

mail@cdtceram.com.cn ■

Dear Sir,

sorry but you do not specify your sample quantity and feed particle size exactly, you only say something about powder.

We recommend the Planetary Micro Mill "pulverisette 7" from FRITSCH with a zirconium oxide grinding bowls with 45 ml volume and 20 pieces of zirconium oxide grinding ball 10 mm dia. This is suitable for a sample of 3-20 ml + alcohol (wet grinding) or we recommend the Planetary Micro Mill "pulverisette 7" from FRITSCH with zirconium oxide grinding bowls with 12 ml volume and 8 pieces of zirconium oxide grinding balls 10 mm dia. This is suitable for a sample of 1-5 ml + alcohol (wet grinding). You can grind 2 samples simultaneously on the "pulverisette 7". If you only want to grind 1 sample, than 1 grinding bowl must be empty.

If you want to grind larger sample quantities than we recommend the Planetary Mono-Mill "pulverisette 6" from FRITSCH. You can use the "pulverisette 6" with Zirconium Oxide grinding bowls with 80 ml volume and 30 grinding balls zirconium oxide with a diameter of 10 mm. This outfit would be suitable for sample of 30 ml + alcohol. Here you can also use 2 grinding bowls 80 ml or only one grinding bowl 80 ml with adapter.

If you would like to grind larger sample of about 150 g. Then please use zirconium grinding balls of 250 ml with 50 grinding balls of 10 mm diameter (minimum); better would be, if you use 100 grinding balls of 10 mm diameter. In this case you can also use wet grinding with alcohol (Isopropanole).

To receive a d 50-value (50% under) < 1 µm, the grinding time will take about 5 hours (depending on the hardness of the material as well of the feed particle size)

For any further information, don't hesitate to contact us.

Best regards,

FRITSCH GMBH

Idar-Oberstein

Germany

www.fritsch.de ■

We are supplier of wear protection alumina ceramics, ceramic grinding media, precision ceramic parts and inert ceramic balls (catalyst bed support media).

Please check our blog web for more info about our products:

https://aluminaceramics.wordpress.com

If you are looking for an alternative supplier, we will be your choice.

Hope to work with you in the near future.

Best Regards,

Zhang Hongbo

Sales Manager

Qingdao CBC Co.,Ltd.

www.cbcceramics.com ■

Wear resistant ceramics & ceramic grinding media - alumina ceramics, zirconia ceramics & ZTA

https://wordpress.com/home/aluminace....wordpress.com ■