CN203810918U

CN203810918U - Fire coal ignition kiln head of manganese ore sintering machine

Info

Publication number: CN203810918U
Application number: CN201420184327.4U
Authority: CN
Inventors: 伍震洲
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-04-16
Filing date: 2014-04-16
Publication date: 2014-09-03
Anticipated expiration: 2024-04-16

Abstract

The utility model discloses a fire coal ignition kiln head of a manganese ore sintering machine. The fire coal ignition kiln head comprises a primary combustion chamber, a secondary combustion chamber and an ignition chamber, the first combustion chamber is communicated with the secondary combustion chamber, the secondary combustion chamber is communicated with the ignition chamber, and a fire grate, a soft coal combustor and an air blower are configured corresponding to the first combustion chamber. The ignition chamber is arranged above a stepping sintering machine hopper in the front-and-back direction and is a jacket with an upper arch layer and a lower arch layer, the front-and-back length of the jacket corresponds to the total length of the multi-section sintering machine hopper below the jacket, the left-and-right width of the jacket corresponds to the width of each section of the sintering machine hopper, multiple sets of front-and-back fire distribution belts corresponding to the multi-section sintering machine hopper are formed on the lower arch layer in the jacket, and each fire distribution belt set comprise a front fire distribution belt and a rear fire distribution belt in the left-and-right direction. Cheap soft coal is adopted as fuel, generated high-temperature smoke is directly used for ignition, the ignition effect is good, and operation cost is low.

Description

The coal-fired igniting of sintering machine kiln hood

(1) technical field:

The utility model relates to smelting equipment, is specially the coal-fired igniting of a kind of sintering machine kiln hood.

(2) background technology:

At present manganese ore is placer mostly, because particle is too little, cannot be directly as the raw material of blast furnace, and therefore, manganese placer need to first adopt sintering machine to carry out sintering processes, just can enter blast furnace process after becoming the mineral aggregate of bulk.

Described sintering machine needs an igniter, for lighting the anthracite that is mixed in manganese placer.At present sintering machine is all to adopt gas igniter, if near have the blast furnace of normal operation, can adopt blast furnace gas as fuel.

But be not to have blast furnace near each sintering machine, neither can normally move by each blast furnace always, therefore, the supporting igniter of sintering machine that does not adopt blast furnace gas to do fuel has just occurred.

Traditional supporting igniting burner of sintering machine that does not adopt blast furnace gas to do fuel is all comprised of gas producer and ignition head, principle is first with coke, to make coal gas, then with coal gas, does fuel and light a fire, and energy has passed through 2 conversions, cause the utilization rate of energy very low, consume energy huge; Gas producer need to consume 9 tons～15 tons high-qualitys high price coke every day and do raw material, and by present price, the operating fuel cost of every day is up to 1.2～1.8 ten thousand yuan.

(3) utility model content:

For solving waste of fuel, cause the problem that operating cost is high, the utility model proposes a kind of coal-fired igniting of sintering machine kiln hood that adopts bituminous coal to do fuel.

The technical scheme of the coal-fired igniting of the utility model sintering machine kiln hood, comprise primary zone, secondary combustion chamber and igniting chamber, difference is that described primary zone communicates with secondary combustion chamber, described secondary combustion chamber communicates with igniting chamber, corresponding to primary zone, disposes fire grate, bituminous coal combustion machine and air blast; Described igniting chamber is located on the sintering machine hopper of fore-and-aft direction stepping, the front and back length of igniting chamber is corresponding to the total length of its below more piece sintering machine hopper, left and right width is corresponding to the width of sintering machine hopper, before and after the bottom of igniting chamber offers, multicomponent is corresponding to the cloth fire band of more piece sintering machine hopper, every group of cloth fire band is front and back setting, left and right directions two.

Operation principle of the present utility model:

1, bituminous coal enters primary zone, under the effect of bituminous coal combustion machine, burns for the first time.

2, under air blast effect, the flue gas of burning (main component is CO) enters secondary combustion chamber, and the double purification that carries out adiabatic high temperature burns, and (CO meets oxygen in air and fully burns for CO ₂), and then flue-gas temperature is brought up to more than 1000 ℃.

3, high-temperature flue gas enters igniting chamber, carries out pressure balance.

4, the high-temperature flue gas in igniting chamber carries out Fire Distribution by many groups cloth fire band to each sintering machine hopper, and high-temperature flue gas is sprayed onto in sintering machine hopper and lights the anthracite mineral aggregate from cloth fire band, realizes sintering.

For obtaining different firepower sizes, in described igniting chamber, be interval with the tune firebrick that polylith blocks cloth fire band, adjust quantity and the position of firebrick and can carry out the distribution of firepower size adjustment.

Generally described igniting chamber bottom design is arch upwards, for ease of adjusting putting (igniting chamber arch bottom is unfavorable for adjusting firebrick to put) of firebrick, flat bed in the middle of igniting chamber arranges, in the middle of described, on flat bed, offer the tune fire groove corresponding to each cloth fire band, described tune firebrick is located at and is adjusted on fiery groove.

The fiery groove of corresponding tune offers for clamp and stretches into and adjust the tune burner of adjusting firebrick position on the left or right sidewall of igniting chamber.

Corresponding to the kiln hood (mineral aggregate in every joint sintering machine hopper has twice dynamo exploder meeting) of regnition, the front and back length of described igniting chamber is the length of two joint sintering machine hoppers, and described cloth fire band is two groups totally four.

For the mineral aggregate in every joint sintering machine hopper of evenly lighting a fire, two cloth fire in each group are with the position that is staggeredly located.

On described secondary combustion chamber and igniting chamber, be respectively equipped with the thermocouple that detects internal temperature.

Realize the firing temperature of 800 ℃, the indoor temperature of described secondary combustion chamber is greater than 1000 ℃, and the indoor temperature of igniting chamber is greater than 900 ℃.

The beneficial effects of the utility model:

1, the coal-fired igniting of the utility model sintering machine kiln hood adopts cheap bituminous coal as fuel, and the high-temperature flue gas of generation is directly used in igniting.

2, the utility model is because energy has only been changed 1 time, so the utilization rate of energy is high more a lot of than legacy equipment, and low to the demanded fuel consuming, and adopts cheap common bituminous coal.

3, prototype equipment of the present utility model has normally moved a year and a half continuously, consumes bituminous coal every day less than 3 tons, energy-conservation more than 75%, in like manner reduces fume emission more than 75%.

4, the bituminous coal that the utility model is used is also cheap a lot of than coke, and operating cost is saved more than 80%, and igniting effect, artificial substantially the same with legacy equipment with power consumption, does not bring other negative effects.

(4) accompanying drawing explanation:

Fig. 1 is the structural representation of a kind of embodiment of the utility model.

Fig. 2 is the top view of Fig. 1 embodiment.

Fig. 3 is the right view (removal primary zone) of Fig. 1 embodiment.

Figure number sign: 1, primary zone; 2, secondary combustion chamber; 3, igniting chamber; 4, bituminous coal combustion machine; 5, air blast; 6, sintering machine hopper; 7, thermocouple; 8, cloth fire band; 9, adjust firebrick; 10, adjust fiery groove; 11, adjust burner; 12, support; 13, reductor.

(5) specific embodiment:

Below in conjunction with accompanying drawing illustrated embodiment, the technical solution of the utility model is described further.

The coal-fired igniting of the utility model sintering machine kiln hood comprises the primary zone 1 being set up in frame 12, secondary combustion chamber 2 and igniting chamber 3, described primary zone 1, secondary combustion chamber 2 and igniting chamber 3 are built into and arrange heat-insulation layer by refractory brick, primary zone 1 be communicated with secondary combustion chamber 2 and the frame 12 in low level height on, described igniting chamber 3 be communicated with secondary combustion chamber 2 and the frame 12 in high position height on, the antenna height of igniting chamber 3 is corresponding to the locus of sintering machine, the sintering machine hopper 6 of sintering machine passes through from the below of igniting chamber 3, pass-through mode is the stepping of fore-and-aft direction, it is identical intermittent movement interval time, as Fig. 1, Fig. 2, shown in Fig. 3.

Corresponding to primary zone 1, dispose fire grate, bituminous coal combustion machine 4 and air blast 5, described primary zone 1 is located at bituminous coal combustion machine 4 inside, described fire grate is by reductor 13 transmissions, be located at the coal feed point in primary zone 1 and remove between cinder notch, described air blast 5 is installed on the right flank of primary zone 1; Described secondary combustion chamber 2 is located at 1 left side, primary zone, and secondary combustion chamber 2 tops are provided with the thermocouple 7 that detects indoor temperature, guarantees that indoor temperature is more than 1000 ℃, as shown in Figure 1, Figure 2, Figure 3 shows.

Described igniting chamber 3 is located at secondary combustion chamber 2 left sides, comprise by front and back layer wall, the chuck that left and right layer wall and upper lower arch layer wall surround, in chuck, flat bed in the middle of lower arch layer wall top arranges, the left and right width of chuck is corresponding to the width of sintering machine hopper 6, the front and back length of (corresponding to the kiln hood of regnition) described chuck is corresponding to the total length of its below two joint sintering machine hoppers 6, corresponding to two joint sintering machine hoppers 6, on lower arch layer wall, offer two groups of cloth fire and be with 8, every group of cloth fire band is two of front and back and is left and right directions (totally four cloth fire are with 8), two groups of cloth fire are with the position that is staggeredly located of two before and after in 8, corresponding to four cloth fire, be with 8 on middle flat bed, to offer the fiery groove 10 of tune, on middle flat bed interval ornaments have can part to block adjust fiery groove 10(indirectly to block cloth fire with 8) tune firebrick 9, can be according to the difference of adjusting firebrick 9 quantity and position, and then regulate that the temperature in left and right directions is even with the fiery cigarette of 8 ejections from cloth fire, for convenience of the position that regulates firebrick 9, the fiery groove 10 of corresponding tune is offered and is adjusted burner 11 on the left side wall of chuck, facilitates clamp to stretch in chuck and adjusts and adjust firebrick 9 positions, equally, in the top of chuck, be provided with the thermocouple 7 that detects indoor temperature, guarantee that indoor temperature is more than 900 °, as shown in Figure 1, Figure 2, Figure 3 shows.

Running of the present utility model:

1, bituminous coal enters in primary zone 1 by fire grate, the bituminous coal in bituminous coal combustion machine 4 combustion chambers and produce flue gas (main component is insufficient CO generating that burns), and the flue gas of generation is blown into secondary combustion chamber 2 through air blast 5.

2, in secondary combustion chamber 2, owing to touching airborne oxygen, flue gas (CO) carries out the double purification burning of adiabatic high temperature, and temperature reaches more than 1000 ℃, the flue dust that burning produces is burnt till molten condition and is dropped in the bottom of secondary combustion chamber 2, then discharges from shoot door.

3, under the effect of air blast 5 wind-force, (more than 1000 ℃) high-temperature flue gas enters in the chuck of igniting chamber 3 and carries out pressure balance, and flue-gas temperature need remain on more than 900 ℃.

4, continue under the effect of air blast 5 wind-force, the high-temperature flue gas in chuck is with 8 to two joint sintering machine hoppers 6, to spray (waterfall shape flame) by four cloth fire, and then lights the anthracite being mixed with in the mineral aggregate of sintering machine hopper 6.

5, two joint sintering machine hoppers 6 are by the movement of two minor tick same times, complete passing through from igniting chamber 3 belows, in process, every joint sintering machine hopper 6 is the burning with 8 pyrotechnics through two cloth fire of the two groups of diverse locations in front and back, and realize twice igniting, the anthracite that makes to be mixed in sintering machine hopper 6 mineral aggregates obtains fully burning, and then placer is sintered into the mineral aggregate of bulk.

6, sintering process needs tight indoor temperature of monitoring secondary combustion chamber 2 and igniting chamber 3, and discovery, lower than 1000 ℃ and 900 ℃ that set, needs the 1 interpolation fire coal to primary zone at once, increases its imperfect combustion degree, produces in time more CO flue gas.

Claims

1. the coal-fired igniting of sintering machine kiln hood, comprise primary zone (1), secondary combustion chamber (2) and igniting chamber (3), it is characterized in that: described primary zone (1) communicates with secondary combustion chamber (2), described secondary combustion chamber communicates with igniting chamber (3), corresponding to primary zone (1), disposes fire grate, bituminous coal combustion machine (4) and air blast (5); Described igniting chamber (3) is located on the sintering machine hopper (6) of fore-and-aft direction stepping, the front and back length of igniting chamber (3) is corresponding to the total length of its below more piece sintering machine hopper (6), left and right width is corresponding to the width of every joint sintering machine hopper (6), igniting chamber (3) bottom offers front and back multicomponent corresponding to the cloth fire band (8) of more piece sintering machine hopper (6), and every group of cloth fire band (8) is two of front and back layout, left and right directions.

2. the coal-fired igniting of sintering machine according to claim 1 kiln hood, is characterized in that: in described igniting chamber (3), be interval with the tune firebrick (9) that polylith blocks cloth fire band (8).

3. the coal-fired igniting of sintering machine according to claim 2 kiln hood, it is characterized in that: described igniting chamber (3) bottom is arch upwards, flat bed in the middle of arranging in igniting chamber (3), in the middle of described, on flat bed, offer the tune fire groove (10) corresponding to each cloth fire band (8), described tune firebrick (9) is located at and is adjusted on fiery groove (10).

4. the coal-fired igniting of sintering machine according to claim 3 kiln hood, is characterized in that: the fiery groove of corresponding tune (10) offers for clamp and stretches into and adjust the tune burner (11) of adjusting firebrick (9) position on the left or right sidewall of igniting chamber (3).

5. according to the coal-fired igniting of the sintering machine described in any one in claim 1～4 kiln hood, it is characterized in that: the front and back length of described igniting chamber (3) is the length of two joint sintering machine hoppers (6), described cloth fire band (8) is two groups totally four.

6. the coal-fired igniting of sintering machine according to claim 5 kiln hood, is characterized in that: the position that is staggeredly located of the two cloth fire bands (8) in each group.

7. according to the coal-fired igniting of the sintering machine described in any one in claim 1～4 kiln hood, it is characterized in that: on described secondary combustion chamber (2) and igniting chamber (3), be respectively equipped with the thermocouple (7) that detects internal temperature.

8. the coal-fired igniting of sintering machine according to claim 7 kiln hood, is characterized in that: the indoor temperature of described secondary combustion chamber (2) is greater than 1000 ℃, and the indoor temperature of igniting chamber (3) is greater than 900 ℃.