Ken,

Pls contact

Krupp Polysius

Ibau Hamburg

Claudius Peters

For a start

U did not mention much about what U wnat

Inverted cone silos

Flat bottom silos

Mixing bins etc

U should get some brochures from these companies and take it from there.

Cheers

James ■

deer Mr. Morrish,

I am new to design for fluidising discharge system of bulk solids such as cement. Particularly, the influences such as the geometric

parameters, the flow rate and pressure of compressor on the efficiency of discharge system and the remains. Would you give me some advice on the subject above? something like in-door guide.

Thanks. ■

dear ken,

There are two types of air slide,one is open and another is closed air slide, now in closed air slide you can carry cement from one end to another end,the angle should be in between 6-9 deg,The closed air slide has got two chambers ,smaller one at the bottom for the air and bigger one for the material,in between the two chambers there is a special fabrick from which the air goes in to the top chamber and fluidised the material,thus the material starts flowing from higher end to lower end.The blower pressure is from 60-63 mbar,you can carry cement from these air slides from 50--600 tph.

Now other type is closed air slide,this system is very good to extract cement from silo up to 30000 t and more capacity,this air slide system is arranged at the bottom of silo in a particular way and the slope is given towards opening side,there is a gap in between the bottom silo slab and open air slide,the fabrick in this system is mounted on a perforated plate and then fixed with the bottom slab of silo.Thr pressure to fluidised the cement in this open air slide system is from 600-630 mbar.

CARRYING THE CEMENT BY AIR SLIDE IS THE CHEAPEST AND BEST SYSTEM.

REGARDS, ANIL SETH ■

A CORRECTION IN THE WRITE UP

dear ken,

There are two types of air slide,one is open and another is closed air slide, now in closed air slide you can carry cement from one end to another end,the angle should be in between 6-9 deg,The closed air slide has got two chambers ,smaller one at the bottom for the air and bigger one for the material,in between the two chambers there is a special fabrick from which the air goes in to the top chamber and fluidised the material,thus the material starts flowing from higher end to lower end.The blower pressure is from 60-63 mbar,you can carry cement from these air slides from 50--600 tph.

Now ,other type is OPEN air slide,this system is very good to extract cement from silo up to 30000 t and more capacity,this air slide system is arranged at the bottom of silo in a particular way and the slope is given towards opening side,there is a gap in between the bottom silo slab and open air slide,the fabrick in this system is mounted on a perforated plate and then fixed with the bottom slab of silo.Thr pressure to fluidised the cement in this open air slide system is from 600-630 mbar.

CARRYING THE CEMENT BY AIR SLIDE IS THE CHEAPEST AND BEST SYSTEM. ■

Dear ken,

Our company has many experiences with fluid technic, like silo or tank aerating systems, fluid conveying systems, material dicharging systems incl. loading spouts pneumatic separation etc. Contact us, please, for more information.

Best regards

Petr Rayman

RAYMAN Ltd.

Ocelarenska 1781

KLADNO

Czech Republic

petr.rayman@rayman.cz

tel. +420 382 522 115

fax +420 382 522 117 ■

TO THE HON. MEMBERS OF THIS FORUM.

We can supply all the equipment/their detailed manufacturing drawing like air slides,flow control gates,silo ventilators,dust collectors,level indicators,diverting gates and have 28 years of exposure do the system engineering and detailed engineering for silos up to 35000 tonnes capacity of various type like-- flat bottom,inverted cone,multicompartment and ring silos.

libran seth ■