CN201433222Y - Internally-externally-heating sponge iron reduction device - Google Patents

Internally-externally-heating sponge iron reduction device Download PDF

Info

Publication number
CN201433222Y
CN201433222Y CN200920037784XU CN200920037784U CN201433222Y CN 201433222 Y CN201433222 Y CN 201433222Y CN 200920037784X U CN200920037784X U CN 200920037784XU CN 200920037784 U CN200920037784 U CN 200920037784U CN 201433222 Y CN201433222 Y CN 201433222Y
Authority
CN
China
Prior art keywords
jar
heating
reduction
furnace
internal heating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN200920037784XU
Other languages
Chinese (zh)
Inventor
丁刚
丁家伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN200920037784XU priority Critical patent/CN201433222Y/en
Application granted granted Critical
Publication of CN201433222Y publication Critical patent/CN201433222Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Furnace Details (AREA)

Abstract

The utility model belongs to a production device for producing raw materials for steel making in the metallurgy industry. The device adopts a shaft-furnace body structure, an externally-heating reduction reaction tank and an internally-heating tank are arranged inside a shaft furnace, the exterior of the externally-heating reduction tank is provided with a gas or a coal heating system facility, the interior of the internally-heating tank body is provided with an internally-heating facility, the lower side of the reduction reaction tank is connected with a cooling transitional section and a cooling cylinder, the lower part of the cooling cylinder is connected with a helix discharging machine, a waste-heat recycling system is connected with the cooling transitional section, the fuel for thereduction furnace is coal gas, soft coal or anthracite, and the furnace body can be of a single-furnace-body structure and also can be formed by a porous furnace and a passage. The weaknesses of the traditional sponge iron reduction device can be overcome. The internally-externally-heating sponge iron reduction device has high heat efficiency, low energy consumption, rapid speed, high yield, stable quality and simple and reliable structure, and can realize the mass production.

Description

Interior external heating sponge iron reduction apparatus
Technical field
The utility model belongs to the production unit of metallurgical industry steel-making raw material, is specifically related to a kind of interior external heating sponge iron reduction apparatus.
Background technology
Sponge iron is below the melting temperature of iron, adopts non-blast furnace technology, and by reduction solid oxide iron powder (normally rhombohedral iron ore) or other oxides-containing irons, the metallized product through reduction or deoxidation acquisition is called direct-reduced iron (DRI) usually.In the reduction of iron ore process, because oxygen loss forms a large amount of holes in inside, kept the profile of iron ore and the gangue in the ore, its weight ratio iron ore reduces 30%, and proportion is about 4.4g/cm3.
Sponge iron is the substitute of the steel scrap and the pig iron, be characterized in carbon content lower (<2%), full iron is more than 90%, not only phosphorus, sulphur content are low, compare not impurity such as cupric, zinc with steel scrap, ingredient stability is a comparatively ideal furnace charge of Electric furnace steel making, for steel-making replenishes with a kind of of steel scrap, be particularly conducive to electrosmelting high-quality special steel.
The at present domestic equipment that is used to produce sponge iron---reduction pot process and reflecting kiln (down-draft kiln)---reduction pot process that mainly is to adopt tunnel furnace.Raw materials used is fine iron breeze, iron phosphorus, adopts charcoal, coke powder or coal dust to make reductive agent, and CaO makes sweetening agent, and it is contained in respectively in the same reduction jar, makes sponge iron through after heating, reduce, cool off in tunnel furnace or reflecting kiln.Owing to adopt the reduction jar, need carry out tinning in advance, sponge iron after the reduction needs to pour out in jar, thereby labour intensity is big, the operation site dust is big, contaminate environment, for this reason, disclose in No. 87101175.1, China's number of patent application a kind of iron phosphorus in shaft furnace with the coke powder technology of the clean sponge iron of original production also, the material part, center of the reduction furnace in this technology partly is made up of receiving hopper 1, central part tremie pipe 2, peripheral hopper 3, reaction tubes 4, shaft furnace body of heater 5, cooling jacket 6, revolving scraper 7, burnt dish 8 etc.The uniform in quality that restores is poor, and is prone to the dross phenomenon, thus the carrying out that influence is produced.Simultaneously because in a reduction jar externally heating, thereby thermo-efficiency is low, and reduction reaction speed is slow, uses coke powder to make reductive agent in reduction, and the production cost height owing to adopt single-unit furnace production and be subjected to the restriction of shaft furnace structure, only is suitable for small serial production.
Announced a kind of pot furnace device of directly going back the original production sponge iron in China ZL96205053.9 patent.This device is to build body of heater, combustion chamber, quirk, air flue, flue, retort, grate and detection, control device on the furnace bottom basis by laying bricks or stones.Quirk grouping, layering, level is staggered and be looped around around the retort; Retort can be identical some groups of structure; Quirk, combustion chamber are corresponding with the group number of retort.Retort is positioned at the part of body of heater inside is built by laying bricks or stones by refractory materials, and the part that is positioned at the body of heater outside is the water jacket of metal construction, and this water jacket bottom is equipped with removal device.
Owing to adopted the furnace binding of compact construction, make that this occupation area of equipment is little, be with below 1/10 of equal yield line tunnel furnace, because quirk adopts the multilayer level, staggered structure, make the thermo-efficiency in the quirk improve, burnup reduces, use this device to produce sponge iron, can make retort be in the working temperature state all the time, needn't heat cooling repeatedly, so compare the energy consumption of reduction by 30% with tunnel furnace, cost also reduces accordingly, and simultaneously, what this device adopted is some groups of relatively independent retort, each retort can be according to reducing operating mode independent control charge composition at any time, reduction parameter such as cooling time can make stable and reliable product quality.Thereby thermo-efficiency is low, and reduction rate is slow, and coal consumption is big, and the cost height is restricted production application.
Announced a kind of built-in coal-based sponge iron shaft furnace in China ZL200720032603.5 patent, this stove adopts and is provided with built-in flue in shaft furnace inside, furnace wall is provided with the gas stream through hole, flue bottom and vapourizing furnace upper end form tempering room, be provided with 2~10 from top to bottom around the flue periphery and jump into the hopper road, this charging conduit helically, because this body of heater is provided with built-in flue and spiral channel, can be controlled the temperature of each several part in the reduction furnace, iron ore and coal in the stove are from up to down gently moved around built-in flue simultaneously, and with the intravital ascending temperature of stove and reducing gas is reverse fully contacts, improve thermo-efficiency and reduction ratio.This stove is owing to adopt many volution feeding structures, influenced production utilization of space in the stove, and the rising of air-flow produced hinder, and spiral helicine complex geometry, huge spirochete is processed very difficulty, owing to spirochete is under the worst hot case for a long time, to having relatively high expectations of spirochete material, used metallic substance cost height, the life-span is short.In the furnace charge folding process, also there is very big problem, in case ore sintering becomes piece, stop up spiral channel, will cause the accident of the logical stove of stopping work.
The utility model content
The purpose of this utility model provides that a kind of reduction temperature is low, reduction rate is fast, energy consumption is few, production efficiency is high, production cost is low, mechanize ability height, be fit to the interior external heating sponge iron reduction apparatus of large-scale production.
The purpose of this utility model is achieved in that this reduction apparatus includes furnace base (12), upper furnace body, lower furnace body, bonnet (27), oven dry pool furnace grate (25), sealing blanking device (1), refining plant and waste heat circulation device, above furnace base, be connected with upper furnace body, below furnace base, be connected with lower furnace body, upper end at upper furnace body is connected with bonnet, oven dry pool furnace grate is positioned at the upper furnace body upper end, refining plant is connected with lower furnace body with upper furnace body by pipeline, and the waste heat circulation device is connected with lower furnace body.
Described upper furnace body comprises internal heating jar (2), reducing gas outlet (3), add thermal reduction jar (4), heating air inlet hole (5), gas pipe (6), refractory brick (7), gas jet (8), refractory fibre (9), reduction furnace shell (10), inside and outside heating tank air inlet port (11), internal heating gas pipe (20), internal heating gas jet (21), add heating kiln (39), roasting reduction district (43), the reduction furnace shell, fire brick layer, add thermal reduction jar and internal heating jar suit successively, the reduction furnace shell is positioned at outermost layer, the internal heating jar is positioned at innermost layer, at internal heating jar center the internal heating gas pipe is arranged, the end of internal heating gas pipe is asked and is connected with the internal heating gas jet, between reduction furnace shell and fire brick layer, refractory fibre is arranged, in fire brick layer for adding heating kiln, there is gas pipe to pass the reduction furnace shell, refractory fibre and fire brick layer, the gas pipe end is connected with gas jet, gas jet is positioned at and adds heating kiln, internal heating jar and add between the thermal reduction jar and to be the roasting reduction district, epimere on the internal heating jar has the reducing gas outlet, at hypomere inside and outside heating tank air inlet port is arranged, adding outside has the heating air inlet hole on the thermal reduction jar; The part that upper furnace body stretches into protective guard is the V-shape structure; the middle part that adds thermal reduction jar and internal heating tank body is to having many oblique gas channels; the oblique gas channel of two tank bodies is V-shape to be arranged, upwards all has a plurality of and tank body parallel gas flow hole at two tank body middle parts.
Perhaps described upper furnace body comprises internal heating jar (2), reducing gas outlet (3), add thermal reduction jar (4), heating air inlet hole (5), refractory brick (7), refractory fibre (9), reduction furnace shell (10), inside and outside heating tank air inlet port (11), fired coal combustion chamber (33), slag removing chamber (34), internal heating quirk (38), add heating kiln (39), roasting reduction district (43), the reduction furnace shell, fire brick layer, add thermal reduction jar and internal heating jar suit successively, the reduction furnace shell is positioned at outermost layer, the internal heating jar is positioned at innermost layer, fired coal combustion chamber (33), slag removing chamber (34) is positioned at the lower end of upper furnace body, internal heating quirk (38) is positioned at internal heating jar (2) and adds the lower end of thermal reduction jar (4), between reduction furnace shell and fire brick layer, refractory fibre is arranged, in fire brick layer for adding heating kiln, internal heating jar and add between the thermal reduction jar and to be the roasting reduction district, epimere on the internal heating jar has the reducing gas outlet, at hypomere inside and outside heating tank air inlet port is arranged, adding outside has the heating air inlet hole on the thermal reduction jar; The part that upper furnace body stretches into protective guard is the V-shape structure; the middle part that adds thermal reduction jar and internal heating tank body is to having many oblique gas channels; the oblique gas channel of two tank bodies is V-shape to be arranged, upwards all has a plurality of and tank body parallel gas flow hole at two tank body middle parts.
Described upper furnace body is single hole one a passage furnace binding, perhaps is porous one passage furnace binding, and the arrangement form of body of heater is a single passage, perhaps is many row's one passages; Add thermal reduction jar and internal heating jar and in upper furnace body, be distributed with 1-50, the middle and lower part that adds the tank body of thermal reduction jar and internal heating jar outside has 10-50 and is oblique air inlet/outlet with the tank body vertical line, have the air inlet/outlet that is arranged in parallel with tank body in the middle and upper part of tank body, its air inlet/outlet uniform distribution on tank body; Add being shaped as circle or being rectangle of thermal reduction jar; Add the thermal reduction jar and use material to make, perhaps adopt two kinds of material co-manufactured as SiC or refractory brick material.
Described lower furnace body comprises cooled transition section (13), spiral discharging machine (18), discharge port (29), body of heater supports (31), inside and outside heating tank supports (32), fired coal combustion chamber (33?) (is it right for 33 labels of this on lower furnace body?), the cooled transition section is positioned at the internal heating jar and adds the bottom of thermal reduction jar, in the cooled transition section is the fired coal combustion chamber, the fired coal combustion chamber is connected with the roasting reduction district of upper furnace body, body of heater supports and is positioned at the outside, inside and outside heating tank supports and is positioned at the center, bottom in the cooled transition section is connected with spiral discharging machine, at an end of spiral discharging machine discharge port is arranged.
Described bonnet comprises bonnet (27), chimney (28), fly-ash separator (44), and chimney is positioned at the upper end of bonnet, and fly-ash separator is connected on the chimney.
Described refining plant comprises waste heat transfer lime (19), middle waste heat recovery pipe (22), last waste heat recovery pipe (26), aerofoil fan (30), right cooling duct (36), right cooling blower (41), the waste heat recovery pipe is connected with bonnet on passing through in the upper end of refining plant, in the middle part of refining plant by middle waste heat recovery pipe coupling in the upper furnace body upper end, last waste heat recovery pipe (26) and middle waste heat recovery pipe all feed to the roasting reduction district, bottom at refining plant feeds to the fired coal combustion of lower furnace body indoor by the waste heat transfer lime, on the waste heat transfer lime, be connected with aerofoil fan, on the waste heat transfer lime below the aerofoil fan, be connected with right cooling duct, on right cooling duct, be connected with right cooling blower.
Described waste heat circulation device comprises left waste heat transfer lime (14), water outlet (15), cooling cylinder (16), water-in (17), left cooling duct (35), left cooling blower (42), cooling cylinder is arranged outside lower furnace body, water-in and water outlet are arranged on cooling cylinder, left side waste heat transfer lime feeds to the fired coal combustion of lower furnace body indoor, on left waste heat transfer lime, be connected with left aerofoil fan, on the left waste heat transfer lime below the left aerofoil fan, be connected with left cooling duct (35), be connected with left cooling blower (42) on the left cooling duct.
Beneficial effect: owing to adopted such scheme, adopt the two-way heating technique of outer heating of jar and jar interior center heating, be the vertical reduction furnace of inside and outside heating, make furnace charge in stove, be subjected to inside and outside heating, and reactant gases secondary combustion in stove helps the thermal center energy, the thermo-efficiency height, energy consumption is low, and flame breakthrough power is strong, uniformity of temperature profile, controlled, device structure is simple and reliable, can the same passage of a stove porous, improve thermo-efficiency, easy to operate, improve reduction rate, realized fast restore, the output height, steady quality, the production of can maximizing;
Adopt jar interior and jar outer novel shaft furnace structure of heating simultaneously, pelletizing employing upper of furnace body is continuously from last adding, and the sponge iron after the reduction flows out from furnace bottom, can make retort be in the working temperature state all the time, needn't heat cooling repeatedly; Simplified production process, improved production efficiency, reduced energy consumption, production process has realized that mechanize takes on material, has improved work situation, reduced labour intensity, no bonding, hanging, dross, bulk fault, equipment is reliable, has realized high mechanization production high quality sponge iron, the material energy consumption is low simultaneously, compares with tunnel furnace and cuts down the consumption of energy about 40%;
Adopt several groups of relatively independent retort productions, each retort can be according to reducing operating mode independent control charge composition at any time, reduction parameter such as cooling time, realize the many variety production of a stove, can make stable and reliable product quality, the fuel wide accommodation can be suitable for coal gas, Sweet natural gas, also can use the coal direct heating;
Adopt coal base reduction technology, adopt bituminous coal, hard coal as direct reductive agent in the reduction, do not use coke, eliminated the environmental pollution that the coke production process is caused, owing to adopt low temperature fast restore technology, and also adopting the waste heat recovery secondary to use in the original production, thereby reduced the consumption of coal, reduce smoke discharge amount, helped environment protection;
Adopt the Iron And Steel Industry waste as main iron-bearing material production high-quality sponge iron, promptly reduced environmental pollution, increased the resource of iron-bearing material again, saved ore resource consumption, reduced raw materials cost.
Reduction temperature is low, reduction rate is fast, energy consumption is few, production efficiency is high, production cost is low, mechanize ability height, be fit to large-scale production, has reached the purpose of this utility model.
The utlity model has following advantage: 1, Xian Jin inside and outside heating installation, reduced reduction temperature, improved reduction rate, reduced energy consumption, reduce production costs, enhance productivity and heating efficiency, guaranteed the homogeneity of sponge iron quality.2, mechanization degree height, production process is simple, and output is big, can accomplish scale production.3, reduce wastage of material, reduce environmental pollution.4, resource consumption has been saved in waste resource recycle.
Description of drawings
Fig. 1 is the equipment structure chart of the utility model first embodiment.
Fig. 2 is the equipment structure chart of the utility model second embodiment.
Fig. 3 is the layout of equipment of the utility model second embodiment.
Fig. 4 is the layout of equipment of the utility model the 3rd embodiment.
Fig. 5 is the layout of equipment of the utility model the 4th embodiment.
Fig. 6 is the layout of equipment of the utility model the 5th embodiment.
Among the figure, 1, the sealing blanking device; 2, internal heating jar; 3, reducing gas outlet; 4, add the thermal reduction jar; 5, heating air inlet hole; 6, gas pipe; 7, refractory brick; 8, gas jet; 9, refractory fibre; 10, reduction furnace shell; 11, inside and outside heating tank air inlet port; 12, furnace base; 13, cooled transition section; 14, waste heat transfer lime; 15, water outlet; 16, cooling cylinder; 17, water-in; 18, spiral discharging machine; 19, waste heat transfer lime; 20, internal heating gas pipe; 21, internal heating gas jet; 22, waste heat recovery pipe; 23, upper furnace body; 24, refining plant; 25, oven dry pool furnace grate; 26, waste heat recovery pipe; 27, bonnet; 28, chimney; 29, discharge port; 30, aerofoil fan; 31, body of heater supports; 32, inside and outside heating tank supports; 33, fired coal combustion chamber; 34, slag removing chamber; 35, left cooling duct; 36, right cooling duct; 37, sponge iron pelletizing; 38, internal heating quirk; 39, add heating kiln; 40, pelletizing; 41, right cooling blower; 42, left cooling blower; 43, roasting reduction district; 44, fly-ash separator; 1-1, well heater; 1-2, external furnace body; 1-3, inside and outside add the thermal reduction jar; 1-4, heating chamber.
Embodiment
Embodiment 1: among Fig. 1, this reduction apparatus include furnace base 12, upper furnace body, lower furnace body, bonnet 27, oven dry pool furnace grate 25, sealing blanking device 1, refining plant and and the waste heat circulation device, above furnace base, be connected with upper furnace body, below furnace base, be connected with lower furnace body, upper end at upper furnace body is connected with bonnet, oven dry pool furnace grate is positioned at the upper furnace body upper end, and refining plant is connected with lower furnace body with upper furnace body by pipeline, and the waste heat circulation device is connected with lower furnace body.
Described upper furnace body comprises internal heating jar 2, reducing gas outlet 3, add thermal reduction jar 4, heating air inlet hole 5, gas pipe 6, refractory brick 7, gas jet 8, refractory fibre 9, reduction furnace shell 10, inside and outside heating tank air inlet port 11, internal heating gas pipe 20, internal heating gas jet 21, add heating kiln 39, roasting reduction district 43, the reduction furnace shell, fire brick layer, add thermal reduction jar and internal heating jar suit successively, the reduction furnace shell is positioned at outermost layer, the internal heating jar is positioned at innermost layer, at internal heating jar center the internal heating gas pipe is arranged, the end of internal heating gas pipe is asked and is connected with the internal heating gas jet, between reduction furnace shell and fire brick layer, refractory fibre is arranged, in fire brick layer for adding heating kiln, there is gas pipe to pass the reduction furnace shell, refractory fibre and fire brick layer, the gas pipe end is connected with gas jet, gas jet is positioned at and adds heating kiln, internal heating jar and add between the thermal reduction jar and to be the roasting reduction district, epimere on the internal heating jar has the reducing gas outlet, at hypomere inside and outside heating tank air inlet port is arranged, adding outside has the heating air inlet hole on the thermal reduction jar; The part that upper furnace body stretches into protective guard is the V-shape structure; the middle part that adds thermal reduction jar and internal heating tank body is to having many oblique gas channels; the oblique gas channel of two tank bodies is V-shape to be arranged, upwards all has a plurality of and tank body parallel gas flow hole at two tank body middle parts.
Described upper furnace body is single hole one a passage furnace binding, add thermal reduction jar and internal heating jar and in upper furnace body, be distributed with 1, the middle and lower part that adds the tank body of thermal reduction jar and internal heating jar outside has 10 and is oblique air inlet/outlet with the tank body vertical line, have the air inlet/outlet that is arranged in parallel with tank body in the middle and upper part of tank body, its air inlet/outlet uniform distribution on tank body; Add the circle that is shaped as of thermal reduction jar; Adding the thermal reduction jar uses material to make as the SiC material.
Described lower furnace body comprises that cooled transition section 13, spiral discharging machine 18, discharge port 29, body of heater support 31, inside and outside heating tank support 32, the cooled transition section is positioned at the internal heating jar and adds the bottom of thermal reduction jar, in the cooled transition section is the fired coal combustion chamber, the fired coal combustion chamber is connected with the roasting reduction district of upper furnace body, body of heater supports and is positioned at the outside, inside and outside heating tank supports and is positioned at the center, is connected with spiral discharging machine in the bottom of cooled transition section, at an end of spiral discharging machine discharge port is arranged.
Described bonnet comprises bonnet 27, chimney 28, fly-ash separator 44, and chimney is positioned at the upper end of bonnet, and fly-ash separator is connected on the chimney.
Described refining plant comprises waste heat transfer lime 19, middle waste heat recovery pipe 22, last waste heat recovery pipe 26, aerofoil fan 30, right cooling duct 36, right cooling blower 41, the waste heat recovery pipe is connected with bonnet on passing through in the upper end of refining plant, in the middle part of refining plant by middle waste heat recovery pipe coupling in the upper furnace body upper end, last waste heat recovery pipe 26 and middle waste heat recovery pipe all feed to the roasting reduction district, bottom at refining plant feeds to the fired coal combustion of lower furnace body indoor by the waste heat transfer lime, on the waste heat transfer lime, be connected with aerofoil fan, on the waste heat transfer lime below the aerofoil fan, be connected with right cooling duct, on right cooling duct, be connected with right cooling blower.
Described waste heat circulation device comprises left waste heat transfer lime 14, water outlet 15, cooling cylinder 16, water-in 17, left cooling duct 35, left cooling blower 42, cooling cylinder is arranged outside lower furnace body, water-in and water outlet are arranged on cooling cylinder, left side waste heat transfer lime feeds to the fired coal combustion of lower furnace body indoor, on left waste heat transfer lime, be connected with left aerofoil fan, on the left waste heat transfer lime below the left aerofoil fan, be connected with left cooling duct 35, be connected with left cooling blower 42 on the left cooling duct.
The concrete scheme of interior external heating sponge iron reduction apparatus is: this equipment adopts the vertical furnace body structure, body of heater is located on the furnace base, in shaft furnace, add the thermal reduction reaction jar, the internal heating jar, top at the internal heating jar is provided with bonnet, in bonnet, be provided with pelletizing drying system fire grate, this fire grate is located at the top that adds the thermal reduction jar inside and outside the shaft furnace, side at bonnet is respectively equipped with sealing blanking device and chimney, top at chimney is provided with fly-ash separator, the outside that adds the thermal reduction jar outside is provided with combustion gas or coal-fired heating system facility, be provided with the internal heating facility in the inside of internal heating tank body, be provided with body of heater support and inside and outside heating tank supports in the bottom of reduction reaction can, below reduction reaction can, be connected with cooled transition section and cooling cylinder, be connected with spiral discharging machine in the bottom of cooling cylinder; Residual neat recovering system is made up of waste heat recovery pipeline, cleaner and aerofoil fan; the waste heat recovery pipeline be connected to the top of protective guard and upper furnace body below; and be connected with aerofoil fan with refining plant; waste heat recovery pipe outlet and cooling duct are with after blower fan links to each other, and the waste heat recycle system is formed in the bottom that is connected the slow cooling section.
Bottom at cooling cylinder is connected with water inlet pipe, top is connected with rising pipe, the middle part that adds thermal reduction jar and internal heating tank body is to having many oblique gas channels, the oblique gas channel of two tank bodies is V-shape to be arranged, upwards all has a plurality of and tank body parallel gas flow hole at two tank body middle parts.
The part that upper furnace body stretches into protective guard is the V-shape structure, so that pelletizing is played guide functions.
Adopt combustion gas, gas jet to heat, be provided with upper, middle and lower on the both sides of body of heater and arrange burner more, injections that be oriented in a tangential direction of burner and periphery reduction jar forms turbulent flow type and heats and makes furnace temperature even.
Embodiment 2: in Fig. 2, described upper furnace body comprises internal heating jar 2, reducing gas outlet 3, add thermal reduction jar 4, heating air inlet hole 5, refractory brick 7, refractory fibre 9, reduction furnace shell 10, inside and outside heating tank air inlet port 11, fired coal combustion chamber 33, slag removing chamber 34, internal heating quirk 38, add heating kiln 39, roasting reduction district 43, the reduction furnace shell, fire brick layer, add thermal reduction jar and internal heating jar suit successively, the reduction furnace shell is positioned at outermost layer, the internal heating jar is positioned at innermost layer, fired coal combustion chamber 33, slag removing chamber 34 is positioned at the lower end of upper furnace body, internal heating quirk 38 is positioned at internal heating jar 2 and adds the lower end of thermal reduction jar 4, between reduction furnace shell and fire brick layer, refractory fibre is arranged, in fire brick layer for adding heating kiln, internal heating jar and add between the thermal reduction jar and to be the roasting reduction district, epimere on the internal heating jar has the reducing gas outlet, at hypomere inside and outside heating tank air inlet port is arranged, adding outside has the heating air inlet hole on the thermal reduction jar; The part that upper furnace body stretches into protective guard is the V-shape structure; the middle part that adds thermal reduction jar and internal heating tank body is to having many oblique gas channels; the oblique gas channel of two tank bodies is V-shape to be arranged, upwards all has a plurality of and tank body parallel gas flow hole at two tank body middle parts.
In Fig. 3, described upper furnace body is porous one a passage furnace binding, and the arrangement form of body of heater is a single passage; Add thermal reduction jar and internal heating jar and in upper furnace body, be distributed with 4, the middle and lower part that adds the tank body of thermal reduction jar and internal heating jar outside has 20 and is oblique air inlet/outlet with the tank body vertical line, have the air inlet/outlet that is arranged in parallel with tank body in the middle and upper part of tank body, its air inlet/outlet uniform distribution on tank body; Add the circle that is shaped as of thermal reduction jar; Adding the thermal reduction jar uses material to make as the refractory brick material.
Add the thermal reduction jar inside and outside this equipment for circular, be the single vertical arranged of body of heater, among the figure 1-1 be well heater, 1-2 be add the thermal reduction jar inside and outside external furnace body, 1-3 are, 1-4 is a heating chamber, each body of heater is common to use same heat tunnel.During production, at each internal heating jar with add in the thermal reduction jar common implementing or implement separately.
Adopt coal-fired heating, add the bottom of thermal reduction jar outside, along the combustion chamber that is symmetrically set with two fire coals of body of heater vertical line, the quirk of this combustion chamber is connected the outside that adds the thermal reduction jar and the center of internal heating pot bottom.
Other and embodiment 1 omit together.
Embodiment 3: among Fig. 4, described upper furnace body is porous one a passage furnace binding, and the arrangement form of body of heater is two rows, one passages; Add thermal reduction jar and internal heating jar and in upper furnace body, be distributed with 8, the middle and lower part that adds the tank body of thermal reduction jar and internal heating jar outside has 20 and is oblique air inlet/outlet with the tank body vertical line, have the air inlet/outlet that is arranged in parallel with tank body in the middle and upper part of tank body, its air inlet/outlet uniform distribution on tank body; Add the circle that is shaped as of thermal reduction jar; Adding the thermal reduction jar uses material to be SiC and two kinds of mixing material manufacturings of refractory brick material.
Other and embodiment 1 omit together.
Embodiment 4: described upper furnace body is porous one a passage furnace binding, and the arrangement form of body of heater is a single passage; Add thermal reduction jar and internal heating jar and in upper furnace body, be distributed with 4, the middle and lower part that adds the tank body of thermal reduction jar and internal heating jar outside has 18 and is oblique air inlet/outlet with the tank body vertical line, have the air inlet/outlet that is arranged in parallel with tank body in the middle and upper part of tank body, its air inlet/outlet uniform distribution on tank body; Add the rectangle that is shaped as of thermal reduction jar; Adding the thermal reduction jar uses material to make as the SiC material.
Other and embodiment 1 omit together.
Embodiment 5: described upper furnace body is for being porous one passage furnace binding, and the arrangement form of body of heater is a double passage; Add thermal reduction jar and internal heating jar and in upper furnace body, be distributed with 8, the middle and lower part that adds the tank body of thermal reduction jar and internal heating jar outside has 10-50 and is oblique air inlet/outlet with the tank body vertical line, have the air inlet/outlet that is arranged in parallel with tank body in the middle and upper part of tank body, its air inlet/outlet uniform distribution on tank body; Add the rectangle that is shaped as of thermal reduction jar; Adding the thermal reduction jar uses material to make as the refractory brick material.The same heat tunnel of the common use of each body of heater.
Other and embodiment 1 omit together.
Embodiment 6: described upper furnace body is porous one a passage furnace binding, and the arrangement form of body of heater is five rows, one passages; Add thermal reduction jar and internal heating jar and in upper furnace body, be distributed with 50, the middle and lower part that adds the tank body of thermal reduction jar and internal heating jar outside has 50 and is oblique air inlet/outlet with the tank body vertical line, have the air inlet/outlet that is arranged in parallel with tank body in the middle and upper part of tank body, its air inlet/outlet uniform distribution on tank body; Add the circle that is shaped as of thermal reduction jar; Adding the thermal reduction jar uses material to make as SiC and refractory brick material mixing material.
Other and embodiment 1 omit together.
Embodiment 7: described upper furnace body is porous one a passage furnace binding, and the arrangement form of body of heater is four rows, one passages; Add thermal reduction jar and internal heating jar and in upper furnace body, be distributed with 20, the middle and lower part that adds the tank body of thermal reduction jar and internal heating jar outside has 40 and is oblique air inlet/outlet with the tank body vertical line, have the air inlet/outlet that is arranged in parallel with tank body in the middle and upper part of tank body, its air inlet/outlet uniform distribution on tank body; Add the rectangle that is shaped as of thermal reduction jar; Adding the thermal reduction jar uses material to make as the mixing material of SiC and refractory brick material.
Other and embodiment 1 omit together.

Claims (6)

1, a kind of interior external heating sponge iron reduction apparatus, it is characterized in that: this reduction apparatus include furnace base (12), upper furnace body, lower furnace body, bonnet (27), oven dry pool furnace grate (25), sealing blanking device (1), refining plant and and the waste heat circulation device, above furnace base, be connected with upper furnace body, below furnace base, be connected with lower furnace body, upper end at upper furnace body is connected with bonnet, oven dry pool furnace grate is positioned at the upper furnace body upper end, refining plant is connected with lower furnace body with upper furnace body by pipeline, and the waste heat circulation device is connected with lower furnace body.
2, external heating sponge iron reduction apparatus in according to claim 1, it is characterized in that: described upper furnace body comprises internal heating jar (2), reducing gas outlet (3), add thermal reduction jar (4), heating air inlet hole (5), gas pipe (6), refractory brick (7), gas jet (8), refractory fibre (9), reduction furnace shell (10), inside and outside heating tank air inlet port (11), internal heating gas pipe (20), internal heating gas jet (21), add heating kiln (39), roasting reduction district (43), the reduction furnace shell, fire brick layer, add thermal reduction jar and internal heating jar suit successively, the reduction furnace shell is positioned at outermost layer, the internal heating jar is positioned at innermost layer, at internal heating jar center the internal heating gas pipe is arranged, the end of internal heating gas pipe is connected with the internal heating gas jet, between reduction furnace shell and fire brick layer, refractory fibre is arranged, in fire brick layer for adding heating kiln, there is gas pipe to pass the reduction furnace shell, refractory fibre and fire brick layer, the gas pipe end is connected with gas jet, gas jet is positioned at and adds heating kiln, internal heating jar and add between the thermal reduction jar and to be the roasting reduction district, epimere on the internal heating jar has the reducing gas outlet, at hypomere inside and outside heating tank air inlet port is arranged, adding outside has the heating air inlet hole on the thermal reduction jar; The part that upper furnace body stretches into protective guard is the V-shape structure, the middle part that adds thermal reduction jar and internal heating tank body is to having many oblique gas channels, the oblique gas channel of two tank bodies is V-shape to be arranged, upwards all has a plurality of and tank body parallel gas flow hole at two tank body middle parts;
Perhaps described upper furnace body comprises internal heating jar (2), reducing gas outlet (3), add thermal reduction jar (4), heating air inlet hole (5), refractory brick (7), refractory fibre (9), reduction furnace shell (10), inside and outside heating tank air inlet port (11), fired coal combustion chamber (33), slag removing chamber (34), internal heating quirk (38), add heating kiln (39), roasting reduction district (43), the reduction furnace shell, fire brick layer, add thermal reduction jar and internal heating jar suit successively, the reduction furnace shell is positioned at outermost layer, the internal heating jar is positioned at innermost layer, fired coal combustion chamber (33), slag removing chamber (34) is positioned at the lower end of upper furnace body, internal heating quirk (38) is positioned at internal heating jar (2) and adds the lower end of thermal reduction jar (4), between reduction furnace shell and fire brick layer, refractory fibre is arranged, in fire brick layer for adding heating kiln, internal heating jar and add between the thermal reduction jar and to be the roasting reduction district, epimere on the internal heating jar has the reducing gas outlet, at hypomere inside and outside heating tank air inlet port is arranged, adding outside has the heating air inlet hole on the thermal reduction jar; The part that upper furnace body stretches into protective guard is the V-shape structure, the middle part that adds thermal reduction jar and internal heating tank body is to having many oblique gas channels, the oblique gas channel of two tank bodies is V-shape to be arranged, upwards all has a plurality of and tank body parallel gas flow hole at two tank body middle parts;
Perhaps described upper furnace body is single hole one a passage furnace binding, perhaps is porous one passage furnace binding, and the arrangement form of body of heater is a single passage, perhaps is many row's one passages; Add thermal reduction jar and internal heating jar and in upper furnace body, be distributed with 1-50, the middle and lower part that adds the tank body of thermal reduction jar and internal heating jar outside has 10-50 and is oblique air inlet/outlet with the tank body vertical line, have the air inlet/outlet that is arranged in parallel with tank body in the middle and upper part of tank body, its air inlet/outlet uniform distribution on tank body; Add being shaped as circle or being rectangle of thermal reduction jar.
3, external heating sponge iron reduction apparatus in according to claim 1, it is characterized in that: described lower furnace body comprises cooled transition section (13), spiral discharging machine (18), discharge port (29), body of heater supports (31), inside and outside heating tank supports (32), the cooled transition section is positioned at the internal heating jar and adds the bottom of thermal reduction jar, in the cooled transition section is the fired coal combustion chamber, the fired coal combustion chamber is connected with the roasting reduction district of upper furnace body, body of heater supports and is positioned at the outside, inside and outside heating tank supports and is positioned at the center, bottom in the cooled transition section is connected with spiral discharging machine, at an end of spiral discharging machine discharge port is arranged.
4, interior external heating sponge iron reduction apparatus according to claim 1, it is characterized in that: described bonnet comprises bonnet (27), chimney (28), fly-ash separator (44), and chimney is positioned at the upper end of bonnet, and fly-ash separator is connected on the chimney.
5, external heating sponge iron reduction apparatus in according to claim 1, it is characterized in that: described refining plant comprises waste heat transfer lime (19), middle waste heat recovery pipe (22), last waste heat recovery pipe (26), aerofoil fan (30), right cooling duct (36), right cooling blower (41), the waste heat recovery pipe is connected with bonnet on passing through in the upper end of refining plant, in the middle part of refining plant by middle waste heat recovery pipe coupling in the upper furnace body upper end, last waste heat recovery pipe (26) and middle waste heat recovery pipe all feed to the roasting reduction district, bottom at refining plant feeds to the fired coal combustion of lower furnace body indoor by the waste heat transfer lime, on the waste heat transfer lime, be connected with aerofoil fan, on the waste heat transfer lime below the aerofoil fan, be connected with right cooling duct, on right cooling duct, be connected with right cooling blower.
6, external heating sponge iron reduction apparatus in according to claim 1, it is characterized in that: described waste heat circulation device comprises left waste heat transfer lime (14), water outlet (15), cooling cylinder (16), water-in (17), left side cooling duct (35), left side cooling blower (42), cooling cylinder is arranged outside lower furnace body, water-in and water outlet are arranged on cooling cylinder, left side waste heat transfer lime feeds to the fired coal combustion of lower furnace body indoor, on left waste heat transfer lime, be connected with left aerofoil fan, on the left waste heat transfer lime below the left aerofoil fan, be connected with left cooling duct (35), be connected with left cooling blower (42) on the left cooling duct.
CN200920037784XU 2009-02-05 2009-02-05 Internally-externally-heating sponge iron reduction device Expired - Fee Related CN201433222Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200920037784XU CN201433222Y (en) 2009-02-05 2009-02-05 Internally-externally-heating sponge iron reduction device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200920037784XU CN201433222Y (en) 2009-02-05 2009-02-05 Internally-externally-heating sponge iron reduction device

Publications (1)

Publication Number Publication Date
CN201433222Y true CN201433222Y (en) 2010-03-31

Family

ID=42052033

Family Applications (1)

Application Number Title Priority Date Filing Date
CN200920037784XU Expired - Fee Related CN201433222Y (en) 2009-02-05 2009-02-05 Internally-externally-heating sponge iron reduction device

Country Status (1)

Country Link
CN (1) CN201433222Y (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102242234A (en) * 2011-07-11 2011-11-16 李增元 Vertical fast reduction furnace
CN102559978A (en) * 2012-02-17 2012-07-11 王东海 Method for producing sponge iron by electric heating and system thereof
CN104344740A (en) * 2014-11-07 2015-02-11 苏州工业园区姑苏科技有限公司 Heat-transferred residual heat utilization device
CN109609787A (en) * 2019-01-02 2019-04-12 北京科技大学 A device for smelting magnesium, calcium, strontium and barium

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102242234A (en) * 2011-07-11 2011-11-16 李增元 Vertical fast reduction furnace
CN102559978A (en) * 2012-02-17 2012-07-11 王东海 Method for producing sponge iron by electric heating and system thereof
CN104344740A (en) * 2014-11-07 2015-02-11 苏州工业园区姑苏科技有限公司 Heat-transferred residual heat utilization device
CN104344740B (en) * 2014-11-07 2016-08-17 苏州工业园区姑苏科技有限公司 One picks shifting residual heat using device
CN109609787A (en) * 2019-01-02 2019-04-12 北京科技大学 A device for smelting magnesium, calcium, strontium and barium

Similar Documents

Publication Publication Date Title
CN106892578B (en) A kind of full recycling CO2Lime kiln device
CN101538632B (en) Preparation process and device of sponge iron
CN101538631B (en) Process and device for smelting ferronickel and nickel-containing molten iron by using lower-nickel materials
CN100519768C (en) Shaft furnace for production of ferrochromium and smelting method thereof
CN101575654B (en) Process and device for preparing iron alloy containing nickel and nickel-chromium
CN105567897A (en) Iron making method and kiln
CN105441687A (en) Dust recycling process and system for iron and steel plant
CN103436703B (en) Total-oxygen side-blown reduction smelting converter
CN101805811B (en) Method and device for smelting iron by using pure-oxygen and hydrogen-rich gas
CN201433222Y (en) Internally-externally-heating sponge iron reduction device
CN105039628B (en) Full coal base confesses that hot direct reduced technique and full coal base confess hot direct reduced shaft furnace
CN101875985A (en) Energy-saving emission-reducing intensive blast furnace technology
CN107815516B (en) External heating type coal-based vertical furnace for producing direct reduced iron
CN201104092Y (en) Built-in coal based sponge iron shaft furnace
CN103194557A (en) Novel gas fusing and melting furnace
CN203024566U (en) Energy-saving and environment-protecting high wind temperature cupola system device
CN104232929B (en) A kind of higher-grade composition brass refining furnace system
CN102127609B (en) Short-process ferroalloy smelting device
CN108949245A (en) A kind of coupling coal gasification realizes the device and method of blast furnace iron-making process carbon capture
CN110160367B (en) Three-stage continuous recovery method for waste heat of tail gas of cupola furnace
CN1029411C (en) Entirely flow continuous steelmaking and iron-smelting method and apparatus
CN209778917U (en) High-efficiency full-oxygen iron-smelting furnace
CN1031206C (en) Method and equipment for integrated direct flow type continuous iron-smelting
CN207738789U (en) A kind of external-heat coal base upright furnace for producing direct reduced iron
CN203024568U (en) Secondary combustion heat storage hot air furnace and cupola furnace with same

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100331

Termination date: 20130205

CF01 Termination of patent right due to non-payment of annual fee