High Temperature (>400° C) Conveyors

Chris K
(not verified)
Posted in: , on 25. Aug. 2012 - 20:58

Dear All,

I am searching for information about conveyors that can handle bulk cargo at temperatures of at least 400° C (750 F).

I’m especially interested in data about: maximal conveying length, maximal working temperature and maximal mass-/volume flow.

I require these data for a presentation at the Chair for Energy Process Engineering at the University of Erlangen-Nuremberg, later it shall be used to choose the convenient conveying system for an experimental plant.

Best Regards,

Christoph Kurr

Hot Stuff.

Posted on 26. Aug. 2012 - 04:30

Aumund seem to be your best bet so far.

If they come through for you then all you need to do is find a captain & crew for the cargo.

Chris K
(not verified)

Re: High Temperature (≫400° C) Conveyors

Posted on 28. Aug. 2012 - 12:47

thank you for your answers

i have contacted magaldi but havent received a response yet.

i'm currently considering screw conveyors as a solution, as the conveying length is only a few meters (10m tops) - is anyone here having experience with those?

Best regards

Christoph Kurr

Roland Heilmann
(not verified)

Hot Hot Stuff

Posted on 30. Aug. 2012 - 12:55

User = cement kilns + petrocoke handler, so maybe this could lead you up to sthg.

However, with the bulk cargo remaining hidden everything's a guess in the dark! Type / Size etc.

Regards

R.

Re: High Temperature (≫400° C) Conveyors

Posted on 31. Aug. 2012 - 02:39

i'm currently considering screw conveyors as a solution, as the conveying length is only a few meters (10m tops) - is anyone here having experience with those?

Ajax has supplied many screws for working at elevator temperatures, up to 1000 C, but each application must have a detailed design review as numerous features have to be considered. Materials weaken at high temperatures, so the permissible span depends mainly on the tube size that can be used, but also on vaious other factors such as the flight type and thickness, shaft speed, the bulk material characteristics and cross sectionalloading of the material being handled, so an individual assessment must be made. Fatigue failure due to rotary bending and twisting is a hazard of long screws, so this and deflection must be taken into account. Attential should also be given to end seals, gasket materials and bearing temperatures, although shaft cooling can be included in the design. Given the range of variations that can be invloved, generalisations may be misleading, so we would advise requirements for applications above 400 C should be referred to specialist suppliers.

Large virtues of screw handling hot products are compactness of cross section and the degree of product containement provided. The casing can be insulated, heated or cooled and the machine used as feeder, conveyor or, to some extent, as an elevator or process vessel. Sizes from 100 mm to 600 mm diameter are quite common, but 1,000 mm diameter or larger screw conveyors are made for larger scale applications.