JPS6060487A - Calciner for carbon product - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] Utilization of Sanshishi 1 5) Force・)lX'Jk明 is dry+1. 'rl Steller-shaped carbon cracked products such as Ike JIJ carbon electrode rod! ! This is related to the firing 17i for kneading the raw materials i, lt', i'l, adding IJQ shape to ILL, and then firing the mixture.

Conventional Structure and Problems Conventionally, in the firing process of carbon products, nine consecutive firings have been carried out in the tunnel car 1 using a trolley.

414 of a conventional firing trolley or on the pedestal of the trolley, arrange large objects with a certain distance between them, and place a large flat plate of refractory material on top of it to create a flat surface. A storage chamber for carbon products is created using fireproof bricks and fireproof mortar, and the carbon products are stored within this storage chamber. Then, put a packing agent such as powdered coke in the space between the 4ti11 wall of the storage room and the carbon product, and after soaking up all the carbon products, place a suitable 1111I refractory cracking board on top of the puncture agent. ing.

The conventional truck configuration has the following drawbacks.

(1) During the repeated heating and cooling of the cart as it moves in and out of the kiln, cracks occur in the fire bricks themselves and the joints of the refractory mortar on the surface of the storage room, causing the entire storage room to become a deformed cedar wood.

If the refractory bricks are moved to the outside of the storage room, there is a risk of collision between the furnace wall and the cart, and inside! If
If the refractory brick moves, the stored carbon molded product will be deformed.

(2) When a trolley with cracks and deformation in the storage chamber passes through the tunnel furnace, puncture agent spills outside, causing staining inside the furnace, and even more puncture agent spills outside. Ashing occurs due to combustion or oxidation of carbon products.

(3) Because the bottom and side walls of the storage chamber are made of refractory bricks, the heat from the firing furnace is difficult to reach the carbon products inside the storage chamber, and the temperature inside the furnace is more than 200°C higher than the carbon product firing temperature. There is a need and confusion to set it.

(4) Since a space is provided at the bottom of the containment chamber with columnar refractories for the passage of flame, the internal volume of the containment vessel becomes smaller due to the height of the columnar refractories.

(5) Since there is a risk of damage to the refractory mortar joints in the containment vessel, it is impractical to fire carbon products without using the full heat of the puncture agent.

OBJECTS OF THE INVENTION It is an object of the present invention to provide a kiln furnace which eliminates the above-mentioned conventional disadvantages, allows the production of products, has good thermal efficiency, and is easy to maintain.

Composition of the Invention The present invention comprises a truck consisting of a car body that runs in a tunnel furnace, a pedestal provided on the car body, and a heat-resistant metal container placed on the pedestal, and stores products in the container. It is. A step or a groove is provided on the pedestal, and the container is removably placed on the pedestal by engaging a protrusion integrally provided at the bottom of the pedestal with the step, and a lid sealing the upper opening of the container. ``A vent is provided in which a porous plug is removably inserted.

DESCRIPTION OF THE EMBODIMENTS The drawings show an example of the structure of a firing furnace according to the present invention. 1 is a tunnel furnace made of refractory bricks, with rails 2 at the bottom.
do. 3 is a car body equipped with wheels 4 for running along the rails 2, 5 is a pedestal made of J-digit refractory material firmly mounted on the car body 3, and 6 is a heat-resistant metal container on which a pedestal 5 fTc is placed. The vehicle body 31, pedestal 5, and container 6 constitute a truck.

The pedestal 5 is provided with a projection 8 on its upper surface to form a step 7 for fixing the container 6, and further provided with four parts 9 to form a space between it and the bottom of the container 6. ing.

The container 6 has an integral structure with only the upper part opened, and has both 111
A hanging T-10 is provided, and a projection 11 that engages with the step 7 of the base 5 is provided on the outside of the bottom.

Can be fixed. At this time, the protrusions 1
The length of the protrusion 8 is shorter than the height of the protrusion 8.

Instead of providing the step 7 on the pedestal 5, a groove may be provided. In this way, the container 6 is immovably fixed onto the pedestal 6, but can be easily removed from the pedestal by lifting the container upward.

12 is a heat-resistant metal 1-piece lid that punches the opening of the container 6;
The lower surface is provided with an edge 13 around the entire circumference that fits loosely into the valley. Heat 12 has a ventilation hole 14 in the center and a porous plug 15 for 11 students. The plug 15 is made of a rigid fiber, a molded body, or a porous metal, and is used to adjust the flow of gas generated within the container and to prevent air from flowing in from the outside. 16rJ412
It is a hanging hand.

At the bottom of the truck, flames are transferred to the wheels 4 by a Zand seal 18 installed between the skirt 1lill plate 17 attached to the car body 3 and the furnace wall.
It has a structure that does not wrap around the inside.

To sinter the carbon product, first, a platform is placed at a predetermined position provided outside the furnace, and the carbon product 19 is stored in the container 6 from the top of the platform using a carrying tool.

Carry-in of carbon products There are cases in which the products are directly placed in the t-L container 6, and particularly in the case of small carbon and twin crystals, they are temporarily placed in a refractory case or the like for easy transportation and storage. After storing the carbon product, a puncture agent 20 of powdered coke is filled between the container 6 and the carbon product 19 from above until the top surface of the carbon product is covered. and fit into the opening of the container 6.

Next, the trolley advances into the tunnel, and the atmosphere inside the furnace ε7
! As u' rises, the inner surface IS of the container 6 is heated through the 11111 surface of the container 6, the upper part 9 and the lid 12 of the container 6. Carbon product 19 is heated (lc
:The binder component in the IM 4'4 is gasified, passes between the pack agents 20, and the container is gradually filled with gas.

Then, when the pressure inside the container increases, the gas follows the vent hole 14 in the lid and is gradually released to the outside through the porous plug 15.

As the truck advances forward and passes through the combustion zone, the combustion flames illuminate the sides and bottom space 9 of the container and engulf the container 6.

At this time, the combustion flame L in the furnace does not enter the container, so
The carbon product in the container 6 is reduced and calcined using commercial crystals. When the cart advances into the furnace and reaches the cooling zone, the container 6 and lid 12 are cooled from the outside. At this time, when the container 6 and the lid 12 are connected to one another, the passage of gas is less than 1 liter, and the ventilation hole 14 is closed by a porous glove 15, so that air from the outside is not allowed to pass through the container 6.
There is no flow inside.

After cooling for a certain period of time, the cart that comes out of the tunnel 1 stops at a predetermined position, opens the lid 12, removes the bank agent 20, and then uses an appropriate carrying device to transport the fired carbon products into a container. Take it out from 6.

When the cart repeatedly passes through the furnace, the protrusion 11 provided at the bottom of the container 6 loosely fits into the step 7 of the pedestal, so that no displacement occurs. Further, when the container 6 is transferred using the hanger 1o, the protrusion 11 and the step 7 between the base 5 serve as a positional guide.

The above-mentioned firing furnace is used to generate gas from the binder component during firing of the carbon product, and depending on the characteristics of the carbon product, it is also possible to perform firing without using a bank agent. Also, if deposits accumulate on the porous plug and it becomes difficult to function, it is best to replace it.

Effect of the invention According to the present invention, the following effects can be obtained.

(1) Since the heat-resistant metal container and the fitting lid are combined, combustion of the carbon product in the combustion zone of the kiln and oxidation of the carbon product in the cooling zone do not occur.

(2) Since the container has a one-piece structure, there will be no deformation or destruction of the containment chamber, no collision with the furnace wall, and no deformation of the carbon product.

(3) There is no risk of the bank agent spilling out from the sides or bottom of the cart, and the pack agent is less likely to wear out.

(4) Provide a protrusion on the bottom of the container, and
Since the container is designed to interlock with the parts, the container will not be misaligned. Therefore, the distance between the IJ'i wall and the truck can be narrowed to increase thermal efficiency, and the carbon product storage chamber can be expanded.

(5) Since the lid is equipped with ventilation holes and a porous plug, it acts as a gas flow path during combustion, and during cooling, the porous plug acts effectively as an air cutoff valve, allowing the carbon products in the container to ash. No change occurs.

(6) - Since a pot container is used, the container can be easily replaced, and maintenance of the trolley is simple.

(7) By providing a low space between the bottom of the container and the pedestal for the flame to pass through, the container can be made larger and the carbon product storage chamber can be made wider compared to those using conventional columnar refractories.

[Brief explanation of the drawing]

The drawing is a longitudinal sectional view showing an example of the configuration of the combustion furnace of the present invention. 1...Tongil Furnace, 3...Car body, 4...Wheels, 5...Pedestal, 6...Container, 7...Step, 11...Protrusion, 12...Ei, 14...
Ventilation hole, 15...Porous plug, 19...Carbon product.

Claims (1)

[Claims] This is a firing furnace in which carbon products are placed in a container on a trolley and passed through a tunnel furnace to be fired, including an 11L body that runs inside the tunnel furnace, and a pedestal installed in the middle of the tunnel.
It is equipped with a trolley consisting of a heat-resistant container for storing carbon products to be placed on the pedestal j. At the same time, the step 5 or (the protrusion 1τ that engages with the groove is integrally disposed) is removed from the pedestal -] 2 and engaged properly, and :・: In order to close the ten openings of
A carbon product firing furnace equipped with a removable plug.