DE142445C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

The invention relates to a method and a furnace built for this purpose in order to in the simple Shaft furnace to burn the unbricked raw mass without the operation being a special one Brick drying required.

The preheater is specially built for this purpose, while the actual firing shaft corresponding to a deck oven (Dietzschen oven) or a shaft oven (Schneider oven) is shaped. The preheater can therefore be used with either of the two types of furnace mentioned build in front.

The upper end of the preheater is used for

Recording and shaping of the raw mass introduced in a plastic state, while the lower end is used for drying and preheating.

The resulting raw mass column is held by a special device, as required lowered and fed to the combustion chamber.

The left half of FIG. 1 is a longitudinal section along the line aa of FIG. 2 and the right half is a longitudinal section along the line bb of FIG. 2. FIG. 2 is a cross section along the line cc of FIG. 1. FIG. 3 is a cross-section along the line dd of FIG. 1.

The drawing shows the design of an ordinary deck oven; the preheater exists in the lower part of stone, in the upper part of iron.

The tubes 1 to 5 are used to shape the raw material, in which they have corresponding openings left behind for the discharge of the hot gases from the firing shaft.

The tubes 6 to 9 take the outgoing at the bulge 10 of the preheater and the cavity 11 permeating hot gases and lead them with the moist Cement raw mass escaping water vapors also to the chimney; here the Outside of the raw meal column heated in that the outer surface of the shaping tube 12 of the withdrawing flame is brushed.

The preheater is filled by means of a boom through the chimney in Tube ι let down a chain, at the end of which a wooden disc is attached, which is provided with holes corresponding to tubes 1 to 5. This wooden disc is going over Tubes 1 to 5 striped and closes the interior of the shaped tube 12 downwards. When adding raw material, the wooden disc let down and burns down after the stove has been lit in the meantime has been.

The wheels 13 rotated by the shaft 14 now take over the support and guidance the resulting column of raw meal and press with their spokes 15 corresponding Pieces of the raw mass that has meanwhile become hard.

The working process in this furnace is as follows:

The raw meal mixed with water (and possibly with coal) turns into a soft, plastic State shifted and brought to the preheater. When charging the preheater it is important to ensure that the shaped tube 12 is as uniform as possible up to the top filled and the thrown in mass is well distributed and pressed down.

After the contents of the firing shaft have dropped by pulling or by burning

is, the mass column is now in the most uniform possible intervals by means of the existing Drive device lowered and the firing shaft the pre-annealed masses fed.

Claims (2)

Patent Claims: i. Process for burning Portland cement and the like, characterized in that that in a special preheater the raw mass, which was introduced in the wet state, is caused by the heat of the withdrawn Combustion gases are dried and thereby shaped in such a way that a mass column arises, which is necessary for the withdrawal of the Has the necessary openings for fuel gases. 2. A kiln for carrying out the method specified in claim 1, characterized characterized in that a group of vertical pipes (1 to 5) is arranged in the preheater shaft so that they are for the flue gas exhaust openings in the one coherent cement block Avoid raw mass. For this purpose ι sheet of drawings.