DE245846C

DE245846C -

Info

Publication number: DE245846C
Application number: DENDAT245846D
Authority: DE

Description

PATENTSCHRIFTPATENT LETTERING

KLASSE 40«. GRUPPECLASS 40 «. GROUP

JOSEPH SALESSKY in MOSKAU.JOSEPH SALESSKY in MOSCOW.

Patentiert im Deutschen Reiche vom 9. Juni 1910 ab.Patented in the German Empire on June 9, 1910.

Es sind bereits Schachtofen bekannt, bei denen der Brennstoff und das zu schmelzende Gut ganz oder teilweise in getrennten Schächten untergebracht sind, die derart durch eine Zwischenwand voneinander getrennt sind, daß sie in der Nähe des Herdes miteinander in Verbindung stehen und demzufolge die im Brennstoffschacht erzeugten Verbrennungsprodukte nach Bestreichen des Herdes in den ErzschachtShaft furnaces are already known in which the fuel and that to be melted Well completely or partially housed in separate shafts, which are so through a partition are separated from each other so that they communicate with each other in the vicinity of the hearth and consequently the combustion products generated in the fuel shaft after brushing the stove in the ore shaft

ίο gelangen und hier die Reduktion der Metallverbindung veranlassen können. Die bekannten Öfen dieser Art haben aber insofern einen Nachteil, als der Brennstoff in verhältnismäßig kaltem Zustande nach der in der Nähe des Herdes liegenden Verbrennungszone gelangt, so daß ein Teil der Wärme der Verbrennungsprodukte zur Anwärmung des Brennstoffes benutzt werden muß. Andererseits wird bei den bekannten öfen die zur Verbrennung nötige Luft derart in der Nähe des Herdes zugeleitet, daß — mag diese Luft nun kalt oder vorgewärmt sein — jeweils ein Teil der Wärme der Verbrennungsprodukte auch zur Anwärmung dieser Luft notwendig ist. Mithin arbeiten diese öfen verhältnismäßig unwirtschaftlich, da die Verbrennungsprodukte nicht diejenige Hitze aufweisen, die sie bei der gegebenen Art des Brennstoffes haben und zur Reduktion des Schmelzmaterials ausnutzen könnten. An diesem Verhältnis wird auch dann nichts ge-35 ίο and can cause the reduction of the metal compound here. The known furnaces of this type have a disadvantage in that the fuel reaches the combustion zone in the vicinity of the hearth in a relatively cold state, so that part of the heat from the combustion products has to be used to heat the fuel. On the other hand, in the known stoves, the air required for combustion is supplied near the stove in such a way that - whether this air is cold or preheated - part of the heat of the combustion products is also necessary to warm this air. As a result, these furnaces work relatively uneconomically, since the combustion products do not have the heat that they have with the given type of fuel and that could be used to reduce the melting material. Will also be in this relationship no overall 35

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ändert, wenn — wie gleichfalls vorgeschlagen wurde — die Luft derart eingeleitet wird, daß sie die auf dem Herde liegende Brennstoffschicht in der Querrichtung durchstreicht, denn diese glühende Brennstoffschicht ist im Vergleich zu der im Brennstoffschacht liegenden Brennstoffsäule verhältnismäßig so klein, daß davon eine Behebung des oben erwähnten Mangels sowohl hinsichtlich der Wärmevergeudung zur Anwärmung des Brennstoffes als· auch hinsichtlich derjenigen zur Anwärmung der Verbrennungsluft nicht zu erwarten ist.changes if - as was also proposed - the air is introduced in such a way that it crosses the layer of fuel lying on the stove, because this glowing fuel layer is in comparison to the one in the fuel shaft Fuel column relatively so small that it eliminates the above mentioned In the absence of both the waste of heat for heating the fuel and also with regard to those for heating the combustion air is not to be expected.

Diese Nachteile bei den geschilderten Schachtofen sollen gemäß der Erfindung dadurch vermieden werden, daß oberhalb des Herdes und auch oberhalb der unteren Kante der Zwischenwand im Brennstoffschacht Luftzuleitungsöffnungen vorhanden sind, während gleichzeitig im oberen Teil des Brennstoff Schachtes beim Betriebe offenstehende regelbare öffnungen angeordnet sind, durch die ein Teil der Gase aus dem Brennstoffschacht herausgelassen werden kann. Durch diese Ausbildung wird erreicht, daß oberhalb des Herdes im Brennstoffschacht eine durch die entsprechende Lagerung der Luftzuführungsöffnungen bedingte hohe glühende Brennstoffschicht entsteht, durch welche der Hauptteil der Gase hindurchgehen muß, und welche, weil sie entsprechend hoch ist, dafür sorgt, daß die aus dem According to the invention, these disadvantages in the shaft furnace described are thereby avoided be that above the hearth and also above the lower edge of the partition Air inlet openings are present in the fuel shaft while at the same time Open adjustable openings in the upper part of the fuel shaft during operation are arranged through which some of the gases are let out of the fuel shaft can be. This training ensures that above the stove in the fuel shaft a high, glowing layer of fuel arises due to the appropriate positioning of the air supply openings, through which the main part of the gases must pass, and which, because it is correspondingly high, ensures that the out of the

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Claims

Combustion products withdrawing fuel shaft and passing over to the ore shaft neither cooled by the fuel itself nor by the air supplied and thereby regarding their influence on the

, Melt material can be reduced. By that by the in the upper part of the fuel shaft, but open openings during operation at the same time

ίο some of the gases up to let out can be achieved depending on the size of these openings that too a glowing fuel zone is created above the air inlet openings, which is mainly is intended to preheat the fuel to an increased extent, which also contributes to the fact that the combustion products leaving the fuel, depending on the type of the fuel material to be used reach the highest temperature in each case.

The invention is shown in the accompanying drawing in three different embodiments illustrated in longitudinal section.

As can be seen from the drawing, the furnace is divided into two compartments or shafts A and B by a wall m in a manner known per se, each of which can also represent a series of shafts. The shaft A is charged with the material to be melted or heated, while the shaft B is only charged with fuel, be it with flux for slagging the ash or without flux. The partition m is designed in such a way that a connecting channel c is created between the two shafts A and B , through which the combustion products can pass from the shaft parts B into the shaft part A after they have painted the stove.

According to the present invention, air supply openings α are arranged above the stove in the fuel shaft B , through which the combustion air is supplied cold or heated. As a result of this arrangement of the air supply openings, a relatively high glowing column of fuel is generated above the stove, through which the combustion products pass from top to bottom and then through c with the highest temperature to shaft A. This glowing fuel column can be enlarged if one or more adjustable openings are attached to the upper end of the fuel shaft according to the present invention and some of the gases are discharged through them upwards. As a result, part of the fuel column above the air supply openings α is also put into a glowing state, whereby a corresponding preheating of the fuel coming down is brought about. In this way, any cooling of the combustion products flowing off at the lower end of the fuel shaft , brushing the hearth and reaching shaft A is prevented. The latter must therefore have a higher temperature than the known shaft furnace of this type and can bring about the heating of the material in shaft A or its melting better than before. In addition, the shaft furnace can have any design and be adapted to the various purposes. k is the tap hole through which the molten material is tapped. If the slag is to be drained off, an open parapet can be provided in the hearth of the furnace, so that the slag can flow away uninterruptedly over the threshold L (FIG. 2). If the material to be treated is not to be kept in a molten state, the lower part of the furnace hearth is provided with emptying openings according to FIG. 3, which are kept closed by flap 0 during the operation. The arrangement of the shafts for the material or the fuel has to be done in the manner shown in Fig. 3 manner, wherein the baffle m holes at the bottom or p gaps or elongated openings r, so that from the slot B, only the gases to be able to step over the shaft A without a mixing of the contents of the two shafts would be possible.

In the case of the recovery of molten material, the latter fills the lower part of the hearth up to the level η (Fig. 1 and 2) such that a gap remains between the level and the lower edge of the wall m through which the gases or while sweeping the hearth . the enamel mass located on it can move from A to B. As a result, the molten material is always covered with a layer of slag on which the fuel from shaft B floats.

Patent-A ν claim:

Shaft furnace, which is divided into two separate shafts for Fuel and divided for ores, which are connected to each other in the lower part stand, characterized in that above the hearth and also above the lower edge of the partition wall in the fuel shaft air inlet openings are available, while in the upper part of the fuel shaft at the company iao

open, controllable openings are arranged, for the purpose of removing the main part of the gases to force a certain by the position of the air inlet openings, accordingly high glowing column of fuel from top to bottom to pass, being one the temperature of this glowing zone and also its height due to the discharge of part of the gases at the upper end of the fuel shaft with simultaneous preheating of the fuel can regulate itself above the air supply openings.

For this purpose ι sheet of drawings.