CN2187613Y

CN2187613Y - Spongy iron producing equipment

Info

Publication number: CN2187613Y
Application number: CN 93242835
Authority: CN
Inventors: 李铁顺
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-11-02
Filing date: 1993-11-02
Publication date: 1995-01-18
Anticipated expiration: 2003-11-02

Abstract

The utility model provides spongy iron producing equipment. The spongy iron producing equipment is composed of a high temperature coal furnace and a high temperature resistant cylindrical semienclosed smelting pot, wherein the high temperature coal furnace has an incline type furnace bottom and has a rectangular wedge-shaped furnace body; the high temperature resistant cylindrical semienclosed smelting pot can roll on the incline type furnace. Sponge iron is produced by utilizing the high temperature coal furnace for heating the smelting can in which iron concentrate powder and coal powder are contained. The equipment has the advantages of simple structure, little investment, capability of continuous production and high quality. The utility model is good equipment for spongy iron production to replace chain grate machines and rotary kilns.

Description

Spongy iron producing equipment

The utility model relates to a kind of sponge iron production unit, particularly a kind of utilize semiclosed jar with smart powder of iron and coal as raw material, the production unit of original production sponge iron also in the high temperature coal stove.

At present, China adopts drying grate single-revolution kiln to produce sponge iron more, mainly adds a spot of coal with high heating value gas (Sweet natural gas) and heats reduced iron fine-powder production sponge iron.Process furnace heating flame, and the smart powder reduction of iron generates sponge iron and coexist and finish simultaneously in the space, and oxidation, reduction are taken place at the same space reduces the spatial reducing atmosphere thereby influence the smart powder of iron, makes the degree of metalization of sponge iron not high.Utilizing drying grate single-revolution kiln to produce in the process of sponge iron in addition, also having the inner ring formation of kiln body, can not in time clear up, making the production can not serialization, wasting energy, this equipment be huge simultaneously, requires investment in fixed assets also very big, is difficult for implementing.

But the purpose of this utility model is to provide a kind of continuous production, expensive little, easy enforcement, the high production unit of sponge iron quality of production.

The utility model is to realize like this, the sponge iron production unit of forming by heat coal stove and smelting pot, its heat coal stove builds up a kind of rectangular wedge shape that has the slope furnace bottom, series arrangement is placed the semiclosed smelting pot that several can roll, that smart powder of iron and coal dust miscellany are housed on furnace bottom on its slope furnace bottom simultaneously, by the semiclosed smelting pot that heat coal stove heating refractory metal is made, make smart powder of the iron that is contained in the jar and coal dust reaction generate sponge iron.

Advantage of the present utility model is that semi-enclosed smelting pot has improved the reducing atmosphere of reduced iron fine-powder.Increased the degree of metalization of sponge iron.Device structure is simple, easy to operate simultaneously.Got rid of ring formation of rotary kiln, easy to clean does not influence the quantity-produced drawback.

Fig. 1 is the utility model overall appearance synoptic diagram

Fig. 2 is the utility model vertical view

Fig. 3 is a whole A-A sectional view of the present utility model

Fig. 4 is the utility model B-B sectional view

Fig. 5 is the utility model C-C sectional view

Fig. 6 is the utility model smelting pot structural representation

Among the figure, 1, the water-cooled crossbeam; 2, body of heater; 3, thermal insulation layer; 4, furnace roof; 5, smelting pot; 6, water-cooled track; 7, pre-hotflue; 8, vertical gas pass; 9, vertical gas pass exterior wall; 10, inlet; 11, vertical gas pass interior wall; 12, underground flue; 13, thermal insulation layer; 14, furnace bottom; 15, high-temperature zone flue; 16, combustion chamber; 17, Feng Cang; 18, coal filling hole; 19, ground; 20, natural ground; 21, outlet; 22, air blast dedusting mouth; 23, guide collar; 24, Lu Tang; 25, water-cooled track wall; 26, cover; 27, venting port; 28, Fang Bankou.

Introduce an embodiment in detail below in conjunction with accompanying drawing.

In Fig. 1, heat coal stove body of heater (2) builds up a rectangular sphenoid with constant slope, the combustion chamber of high temperature coal stove is located at the lower end of rectangular wedge shape coal stove, air blast dedusting mouth (22), the coal filling hole (18) of combustion chamber are positioned at the body of heater both sides, simultaneously the furnace upper end mouth as enter the mouth (10), lower port is as outlet (21), and outlet is connected by heat-resisting water-cooled track (6) with inlet.Heat-resisting water-cooled track (6) is to feed recirculated cooling water in the steel pipe, in case high temperature deformation.

In Fig. 2, covering and heat insulating layer (3) on the furnace roof in order to improve furnace temperature, cuts down the consumption of energy.

In Fig. 3, be located at the upper end of the high temperature coal stove combustion chamber (16) of rectangle wedge shape coal stove lower end, set up heat-resisting water-cooled crossbeam (1), (16) upper fixed connects water-cooled crossbeam (1) in the combustion chamber with the water-cooled track, and the water-cooled crossbeam supports the water-cooled track smoothly by high temperature combustors (16).Body of heater (2) air retaining wall, furnace roof (4), slope furnace bottom (14), flue interior wall (11) all adopt refractory materials to make.The slope furnace bottom down and between the ground filling heat insulator form thermal insulation layer (13).Bunker coal is (16) internal combustion in the combustion chamber, gives smelting pot (5) heating by combustion chamber (16), high-temperature zone flue (15), pre-hotflue (7), makes the smart powder of iron and the coal dust reaction of its inner splendid attire generate sponge iron.Waste gas behind the coal combustion is discharged body of heater through the underground flue (12) that is connected with flue simultaneously.

In Fig. 4, the water-cooled track laying is on track wall (25), and materials for wall can adopt refractory materials to make.The water-cooled track is maked somebody a mere figurehead in whole flue, and smelting pot (5) is fully contacted with high hot flue gas in the pre-hotflue (7) of Lu Tang (24).

In Fig. 5, coal filling hole (18) branch is located at the body of heater both sides and is beneficial to coal and scarfing cinder, below coal filling hole, also be provided with simultaneously air blast dedusting mouth (22), be beneficial to coal fully burning in combustion chamber (16), heat-resisting crossbeam (1) supporting track above the combustion chamber passes through the combustion chamber smoothly, its heat-resisting crossbeam is all made by steel pipe, is filled with water coolant in the pipe.

In Fig. 6, it is cylindrical that smelting pot (5) adopts refractory metal to make, and leave venting port (27) at the bottom of the smelting pot jar, unnecessary gas in the reduction reaction is discharged, lower pressure in the jar, a jar mouthful employing spiral shell button combines with cover (26), screws on or screws off by square plate mouth (28).On cover, also be shaped on simultaneously venting port (27), for prevent smelting pot in orbit left and right sides play also on tank body, add guide collar (23).

Utilize several that smelting pot of smart powder of iron and coal dust intermixture is housed, roll into the stove,,, make smart powder of jar interior iron and coal dust fully react the generation sponge iron through reacting by heating after a while by the heat coal stove from the ingress order.Constantly the smelting pot that rolls out from the exit is transported to the ingress again and is feeded into stove through cooling, cleaning, just can continuously produce sponge iron.

Claims

1, a kind of sponge iron production unit is made up of high temperature coal stove and several smelting pots, it is characterized in that:

A, said high temperature coal stove are a kind of coal stoves that ramp type furnace bottom body of heater is rectangular sphenoid that has,

B, said smelting pot are semiclosed jar of a kind of resistant to elevated temperatures Cylinder shapes of can rolling on the ramp type furnace bottom.

2, production unit as claimed in claim 1, it is characterized in that the combustion chamber of high temperature coal stove is located at the lower end of rectangular wedge shape coal stove, smelting pot is that a Cylinder shape tank body one end has jar mouthful and the venting port cover is arranged, and the refractory metal jar of venting port is also arranged at the bottom of the other end jar.

3, production unit as claimed in claim 1 or 2 is characterized in that the heat-resisting track that smelting pot is rolled from top to bottom is installed on its ramp type furnace bottom, and on Cylinder shape tank body guide collar is installed.

4, production unit as claimed in claim 3 is characterized in that said track made by a steel pipe, is filled with cooling circulating water in the pipe.

5, production unit as claimed in claim 3 is characterized in that also being provided with the heat-resisting crossbeam that supporting track passes through smoothly above the combustion chamber.

6, production unit as claimed in claim 5 is characterized in that said crossbeam also is to be made by steel pipe, filling cooling circulating water in the pipe.