DE403906C - Oven for roasting and glowing marble cement at the same time - Google Patents

Description

GERMAN EMPIRE

ISSUED
ON OCTOBER 9, 1924

REICH PATENT OFFICE

PATENT LETTERING

- M 403906 CLASS 80c GROUP

(B 112IS 2 ^v \ So c)

H. & E. Börgardts, gypsum and marble cement works in Clettenberg a. H.

Oven for roasting and glowing marble cement at the same time.

Patented in the German Empire on December 28, 1923.

The furnace according to the invention is used for the production of marble cement. Marble cement is manufactured by means of the registered furnace in such a way that the raw material is stored in armory is drained. The roasted material is then treated with lye for the purpose of greater hardening, which is caused by the exhaust gases Oven is heated. The leached material is then completely burned in the annealing furnace.

So far, the roasting of the marble cement for the purpose of drainage has been used to glow the leached material and a special fireplace is used for heating the lye, which caused a large consumption of coal, also made the plant very expensive.

This drawback is overcome by the furnace according to the invention in that the Oven both roasting the raw material as

also causes the finish burning in the annealing furnace, and that the exhausting hot gases are still used to heat the lye required for hardening.

The furnace is shown in the drawing. It has two roasting chambers and a glow chamber. It is set up in such a way that the heat of the heating gases developed is fully utilized will.

Fig. Ι shows a vertical longitudinal section through the furnace along the section line XX (Fig. 2);

Fig. 2 is a wagerectoter Schmitt through the furnace according to AB (Fig. I); Fig. 3 shows a horizontal section along the section line CD through the lower trains;

Fig. 4 shows a horizontal section in the direction of the section line EF through the ao upper train;

Fig. 5 shows a vertical cross section along the line GH;

Fig. 6 shows one along the section line JK.

Fig. 7 shows a vertical cross-section along the line LM ;

Fig. 8 illustrates the oven in connection with its drainage for heating the lye.

The furnace has the glow chamber 1 and the roasting chambers 2, 3. The fire gases developed on the grate 4 sweep over the glowing space ι and pull over the ceiling of the lower grate chamber 2 (see Fig. 1 and 6). For this purpose, two trains 5 are provided above the grate chamber 2 in the ceiling of the same, which conduct the fire gases from the glow chamber via the lower roasting chamber 2. The fire gases go at the end opposite the fire 4 from the trains 5, 5 in the two downward trains 6, 6 (Fig. 6) and ¹ from there below the lower roasting chamber 2 and the annealing chamber ι in two side trains 7 for heating of the bottom of this chamber. They meet in the central channel 8 and pull at the other end of this central channel through a first vertical, then diagonally guided train 9 into the serpentine channels 10 above the second roasting chamber until they are intercepted at the other end by a trigger (see Fig. 1, 4 and 7). As a result of this routing of the heating gases partly in the channels 5, partly in the snakes 10, the upper roasting chamber 3 is also heated sufficiently to carry out the roasting of the marble cement successfully. The exhaust gases are then passed through the pipe 11 to a preheater 12 before they are drawn off into a fox 13. In the preheater, which is connected to a loop line 14, the lye is heated in the barrel 15 and the waste heat from the furnace is thereby still used.

The roasting chambers and the annealing chamber are provided with the necessary cabinets 16. The raw material to be treated is comminuted accordingly in boxes in the chambers used. Suitable vapor channels draw off water vapor from the roasting chambers 2, 3. In order to bring about a uniform heating of the rear wall of the furnace, is above of the fire a train 18 is derived, which runs along the rear wall 19 up to the train 5 leads and heats this wall of the furnace. The fire developed on the grate beats in Usually through a fire bridge 20 after the glow chamber, the fire is first passed through the glow chimney. Then the fire gases pull over the ceiling of the Roasting chamber 2 through the channels 5, then through the vertical channels 6, 6 after Bottom of the roasting chamber 2 and annealing chamber 1 by passing them through the lateral channels 7, 7 Pull backwards and forwards through the middle channel 8 to get through the vertical channel 9 then to step to the snake trains 10. Through the snake channel 10 and the trains 5, the upper roasting room 3 is also suitably heated.

Claims (2)

Patent Claims: i. Furnace for the simultaneous roasting and glowing of marble cement, characterized in that, d & ß the fire gases from a single furnace (4) first into the open annealing chamber (1), then through the Ceiling and then under the floor of the first roasting chamber (2), and finally in serpentine channels (10) heat the roof of a second roasting chamber (3), the floor of which from the fire gases the furnace (4) and the fire gases pulling over the roof of the roasting chamber (2) is heated, whereupon the from the Heat the furnace-extracting exhaust gases in a preheater for the lye that is used to harden the rock. 2. Oven according to claim 1, characterized in that in the rear wall of the oven (19) under the upper roasting chamber (3) a train (18) is arranged, which is a part Directs fire gases after the trains (5) above the first roasting chamber. 1 sheet of drawings.