DE720924C - Method and device for firing ceramic pipes, rods, or the like. - Google Patents

Description

Method and device for firing ceramic tubes, rods o. The like. The invention relates to an apparatus and method of operation for burning of ceramic tubes, rods or the like.

In the previous facilities of this type, the kiln is through Oven loading openings packed or suspended in the oven and the Oven tightly sealed by the door lock. After the firing has taken place, the Let the furnace cool down first, after which the kiln can be unpacked and grounded. This kind of Burning is very time consuming and also stresses the refractory material as a result the constant cooling and heating in an unnecessary way. The lifespan of such The furnace is also due to the interruption of the masonry through the loading opening Degraded.

According to the present invention, this is made up of pipes, rods or the like Firing material existing in briquettes in an open only at the top, otherwise closed on all sides Fired furnace, which is sealed gas-tight with a cover. on this one The briquettes to be burned are hung up using a lid made of refractory material and brought in or out of the oven by lowering or lifting the lid.

Firing in such ovens has the advantage that the ovens are permanent can be kept at a certain firing temperature, since after firing of an insert to be fired, immediately put another hood in the furnace with the firing material on it can be introduced. In the case of particularly sensitive items to be fired, this should be done in stages the required firing temperature must be brought, according to the invention that Goods hung in the hood are slowly preheated in special preheating shafts, before it is brought into the furnace, which has been brought to the firing temperature. In a similar way The goods can also be gradually cooled by placing them in special cooling shafts is brought. The heat emitted from the fired product is preferably used used to preheat the material to be fired in the pre - #, 'i-msch-'chten.

# -It is also possible to put the kiln cold in to bring in the furnace and to cool down again after the final firing let, in which case still a higher efficiency compared to the known oven is available, as the time-consuming packing and unpacking of the firing material is saved is and also the stove masonry due to the lack of shower breaks through the Loading oil has a greater shelf life.

It is already known that in annealing furnaces for iron strips, wire or the like To accommodate annealing material in annealing pots, which by means of the lid in the furnace shaft be hooked. Since the operating conditions in such ovens and. at kilns for ceramic bricks are very different, the present invention was known opposite not close. In particular, it was not to be expected without further ado that the Ceramic pipe moldings or the like, without them jumping, immediately into the hot oven used and taken out of it for the purpose of cooling in another place can be.

In the drawing, exemplary embodiments of the invention are shown in Fig. i and 2 shown.

Fig. I shows the mode of operation in which z. B. ceramic tubes that can withstand high temperature changes can be fired. The tubes i are initially hung in a cover 2 outside the furnace. By means of a lifting device 3 that can be moved on a roadway .l, the hood 2 with the pipes i is then introduced into a shaft furnace 5, which is heated from the gas supply lines 5 , whereby the heating can also be done electrically or in some other way. When the hood 2 with the items to be fired is placed on the furnace, the furnace is completely closed off from the outside air.

The items to be fired are fired to the required temperature and the The heating is then switched off, whereupon the hood with the items to be fired is lifted out of the furnace and is deposited on the holding device 6a at 6. The material to be fired can be started here the air to cool and is then removed from the hood, whereupon the hood is again is filled with new firing material. In the meantime, b (is another hood again with fresh B g C, ut has been placed in the oven. rend of the vacancy of the Oven can be covered by a special hood until the next time the goods are brought in will.

In Fig.2 a mode of operation is shown: in which the preheating and cooling of the items to be fired in special shafts: The items that have been completely fired in the furnace 13 are lifted out by means of the hood 12. brought the cooling shaft ii. Wäh: the preheated material to be fired is brought into the empty furnace from the preheating shaft 1 5 by means of the hood 1: 4. Items to be fired from the hood io can then be cooled even deeper in e further shaft 8, to finally complete on the Haltevoi device 6a at 9 in the air; cool. The material to be fired from the hood 16 moves from the first preheating shaft into the preheating shaft 15, while the cold material 19 from the hood 18 enters the preheating shaft U. The preheating of the shafts 15 and iy can take place through the heat of the furnace 13 or also through the radiated heat of the cooling tubes and 8. If necessary, small additional heating is attached to the upstream shafts.

Claims (2)

PATENT CLAIMS: i. Device for burning reindeer, sticks and the like Formli made of ceramic masses in a room in which the ki to be burned hang freely and are at rest during the porridge, marked by the fact that the open top, shaft-like B clear with a lid from fires (material is closed to the to be burned The body is hung up and that this is carried out by lowering or egg the lid into the furnace chamber to be brought out of it. 2. Drying or preheating and cooling of the Lid according to claim i hung material to be fired ii special preheating chambers and from chambers.