SU29400A1 - Gypsum burner shaft kiln - dryer with inclined shelves - Google Patents

Description

- The invention relates to gypsum-burning shaft kilns-dryers with inclined shelves, with an elevator heated by conducting flue gases through pipes passed through the sinuses under the inclined shelves of the outer sleeves that communicate these pipes, and also through the cavity of the double walls of the elevator. In the proposed gypsum-burning shaft kiln-dryer, the hardened gypsum casing is placed under the inclined barn with raw gypsum for the purpose of preheating the latter before it is taken by the elevator.

In FIG. 1 shows a vertical section through the furnace; FIG. 2 is a side view of it; FIG. 3 is a view from above.

The proposed furnace (Fig. 1-3) is equipped with a vertical plate-type elevator that captures the ground gypsum from under the mill 7 / inclined bins 13 and lifts the ground gypsum through a vertical shaft 6 heated by flue gases, equipped with double walls and insulated from the outside. The flue gases come from the furnace 5 and are sucked off through the pipe 2 by the pipe 7.

Dried gypsum from the top of the elevator. falls in a continuous and uniform manner. G.

current in contact with the hot surfaces of the inclined shelves 4 heated by flue gas flows circulating through the elbows 70 originating from the firebox 5. The dehydrated gypsum enters the barn 14 located below the inclined batch 13. In the batch 14 the gypsum is cooled by heating with its warm, raw gypsum in a sloped bale 75. Air is drawn in through the furnace arches, heated to the desired temperature and sent to the chamber, which is isolated from the outside.

Subject and goiter-e shadow.

The gypsum-burning shaft kiln-dryer with inclined shelves with an elevator is heated by conducting flue gas pipes through pipes passed through inclined shelves and through the outer sleeves that communicate these pipes, as well as through the cavity of the double walls of the elevator, characterized by the length of 14 dl Burnt gypsum is placed under the inclined bins, from which raw gypsum is taken up by the elevator in order to heat the latter.