CN208733152U - A kind of steel scrap and iron content solid waste multi-functional melt furnace - Google Patents
A kind of steel scrap and iron content solid waste multi-functional melt furnace Download PDFInfo
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- CN208733152U CN208733152U CN201821335961.8U CN201821335961U CN208733152U CN 208733152 U CN208733152 U CN 208733152U CN 201821335961 U CN201821335961 U CN 201821335961U CN 208733152 U CN208733152 U CN 208733152U
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Abstract
The utility model proposes a kind of steel scrap and iron content solid waste multi-functional melt furnaces, furnace body is vertical structure, and furnace body includes top feeding section, shaft and cupola well, and steel scrap and other iron-containing charges and coke are added from top feeding section, it is equipped with iron mouth in bottom of furnace body, slag iron is discharged from iron mouth；Smelting furnace uses hot air smelting, and the cupola well top is equipped with air port, blasts hot wind by air port, and coal gas or coal dust burner are alternately arranged or be equipped with above air port with air port.The utility model is using steel scrap and other iron content solid wastes as raw material, using coke or coal dust or coal gas as fuel, is molten iron by steel scrap and iron content solid waste melting, so as to rationally recycle scrap resources, while handling the iron content waste of part iron enterprise.
Description
Technical field
The present invention relates to the metal smelts and field of solid waste resource utilization of steel, casting industry, and in particular to a kind of
Steel scrap and iron content solid waste multi-functional melt furnace.
Background technique
2016, China's steel scrap consumed 90,100,000 tons, steel scrap unit consumption 111kg/t, scrap ratio 11.1%.China makes steel steel scrap
Than being 11%, converter ton steel steel scrap consumes 72.1kg, and the U.S. makes steel scrap ratio 70.74%.
National 90,920,000 tons of total resources of scrap iron and steel in 2016, self-produced 44,300,000 tons of steel enterprise, 46,450,000 tons of social steel scrap, into
170,000 tons of steel scrap of mouth.At the end of 2016,8,000,000,000 tons of China's steel accumulation, 1.6 hundred million tons of scrap resources yield.To the year two thousand twenty
End, 10,000,000,000 tons of China's steel accumulation, 200,000,000 tons of scrap resources yield.
As more than one hundred million tons of ground bar steels exit, steel scrap iron resource increases, and flow direction tends to be reasonable.
5-10 from now on, steel scrap iron resource will be unprecedented soaring, and iron and steel enterprise will become the trend of Future Development using steel scrap.
How rationally the utilization scrap resources of economy, be current iron and steel enterprise just in problems faced.
1 ton of molten iron solid fuel consumption about 500kg of blast furnace process at present, electric furnace using pure scrap smelting power consumption will substantially on
It rises, and smelting furnace melting 1t steel scrap solid fuel consumption is 130~150kg, if using portion gas fuel, coke consumption meeting
It is lower.
In Production Process for Steel Enterprise, while a large amount of sludge and dust are produced, comminuted steel shot dirt occurrence quantity per ton about 130~
150kg, and the dust generated is partially also needed as dangerous waste management, multi-functional melt furnace, that is, fusible mostly as fixed-end forces
Refine steel scrap, at the same can melting part pass through the dust of briquetting processing, recycle the resources such as iron therein, zinc, accomplish the classification of resource
Recycling, recycles.Iron and steel enterprise uses multi-functional melt furnace Scrap Smelting and dust, can locate while producing molten iron
Part share is managed, and fuel consumption and discharge can be greatly reduced in production process, economic and social benefit is significant.
On casting industry, furnace cupola is still sure to occupy first of casting iron melting equipment, is still responsible for the casting of 80% or more weight so far
The melting task of ironware.Using multi-functional melt furnace, part can be replaced to cast using combustion gas while meeting casting smelting
Coke reduces pollutant emission.
Summary of the invention
In order to rationally recycle scrap resources, while the iron content waste of part iron enterprise is handled, the present invention provides one
Kind steel scrap and iron content solid waste multi-functional melt furnace produce molten iron simultaneously for metal therein point using steel scrap and iron content solid waste as raw material
Class recycling.
The present invention reaches goal of the invention by following technical solution: a kind of steel scrap and iron content solid waste multi-functional melt furnace, furnace
Body is vertical structure, and furnace body includes top feeding section, shaft and cupola well, and steel scrap and other iron-containing charges and coke feed from top
Section is added, and is equipped with iron mouth in bottom of furnace body, slag iron is discharged from iron mouth；
Smelting furnace uses hot air smelting, and the cupola well top is equipped with air port, blasts hot wind by air port, replace cloth with air port
Set or be equipped with above air port coal gas or coal dust burner.
Further, the upper shaft is cylindrical or truncated cone-shaped structure.
Further, the shaft uses water cooled furnace body, sprayable refractory in furnace shell.
Further, the air port uses copper water cooled tuyere, and iron-containing charge is melt into molten iron drop above tuyere zone
It falls in cupola well, air port is goed deep into furnace, and refractory material is built in the zone furnace of air port.
Further, the burner uses oxy coal burner or coal gas burner, guarantees that coal dust and oxygen are complete in inlet front end
Full burning realizes the coke for reducing air port burning by the control of air port and the burner blow rate required.
Further, the cupola well is that cylindrical structure, internal diameter and shaft are shunk at straight barrel type or slightly.
Further, the cupola well uses water cooled furnace body, and cupola well bottom is equipped with iron mouth, molten iron and clinker and is discharged from iron mouth.
Further, it is equipped with coal gas between the smelting furnace upper of furnace body and feeding section and exports endless tube, coal gas exports endless tube
Interior pressure control guarantees that coal gas does not escape out in tiny structure, and feeding section height guarantees that outside air enters the resistance of coal gas export endless tube
Power loss is greater than the negative pressure pressure in coal gas export endless tube, guarantees that air does not enter coal gas system.
Steel scrap proposed by the present invention and iron content solid waste multi-functional melt furnace, using steel scrap and other iron content solid wastes as raw material, with
Coke or coal dust or coal gas are fuel, are molten iron by steel scrap and iron content solid waste melting.Smelting furnace is vertical structure, and furnace body includes adding
Expect that furnace body, coal dust or coal gas is added from furnace from by feeding device in section, preheating section, melt zone etc., steel scrap, ferrous material and coke
Body sprays into, while blasting hot wind in shaft, and coal gas is exported from upper of furnace body, and molten iron and clinker are discharged from lower portion of furnace body, the present invention
Scrap resources can be rationally recycled, while handling the iron content waste of part iron enterprise.
Detailed description of the invention
Fig. 1 show the steel scrap and iron content solid waste multi-functional melt furnace structural schematic diagram of present pre-ferred embodiments.
Specific embodiment
A specific embodiment of the invention is provided below in conjunction with attached drawing, but the present invention is not limited to the following embodiments and the accompanying drawings.Root
According to following explanation and claims, advantages and features of the invention will be become apparent from.It should be noted that attached drawing be all made of it is very simple
The form of change and use non-accurate ratio, be only used for conveniently, lucidly aid in illustrating the embodiment of the present invention purpose.
Referring to FIG. 1, Fig. 1 show the steel scrap of present pre-ferred embodiments and iron content solid waste multi-functional melt furnace structure is shown
It is intended to.The present invention proposes that a kind of steel scrap and iron content solid waste multi-functional melt furnace, furnace body are vertical structure, and furnace body includes top charging
Section 10, shaft 20 and cupola well 30, steel scrap and other iron-containing charges and coke are added from top feeding section 10, are equipped in bottom of furnace body
Iron mouth 40, slag iron are discharged from iron mouth 40；Smelting furnace uses hot air smelting, and 30 top of cupola well is equipped with air port 50, passes through air port
50 blast hot wind, and coal gas or coal dust burner 60 are alternately arranged or be equipped with above air port 50 with air port 50.
Preferred embodiment according to the present invention, furnace charge, which is added, uses truck or drop-bottom material basket, expects basket bottom above furnace body
It opens, the feeding device 70 of the top feeding section 10 in furnace is added in furnace charge from material basket, and top feeding section 10 is cylindrical structure,
Using the structure of furnace shell inner lining steel brick, prevent from causing sidewall damage in furnace charge dropping process.
Furnace charge is gradually advanced into down shaft 20 under the effect of gravity, in shaft 20, carries out heat exchange with the coal gas of uplink,
According to oxides-containing iron furnace charge is partially needed, then oxides-containing iron is partially reduced to low price ferriferous oxide or metal in shaft 20
Iron, 20 top of shaft are cylindrical or truncated cone-shaped structure, and the shaft 20 uses water cooled furnace body, spray refractory material in furnace shell
Material.
Smelting furnace uses hot air smelting, is equipped with air port 50 in 20 bottom of shaft, blasts hot wind by air port 50, shaft 20
Air port 50 is with 2000 DEG C of temperature or so, and part of coke burning releases heat and generates coal gas, and the air port 50 uses copper water cooling
Air port, iron-containing charge are melt into molten iron above tuyere zone and drop onto cupola well 30, and air port 50 is goed deep into furnace, air port zone furnace
Interior masonry refractory material.
Smelting furnace replaces coke in order to reduce coke dosage, using part coal dust or coal gas, in tuyere zone in addition to blasting heat
Outside wind, coal gas or coal dust burner 60 are alternately arranged or are equipped with above air port 50 with air port 50.Burner 60 is fired using efficient oxygen coal
Burner or coal gas burner guarantee that coal dust and oxygen pass through under the premise of meeting cupola well thermic load in inlet front end completely burned
The control of 60 blow rate required of air port 50 and burner realizes the coke for reducing air port burning, utilizes coal dust or the work of coal gas substitute for coke
With.
The molten iron of molten condition enters cupola well 30 after tuyere zone melts, and cupola well 30 is cylindrical structure, internal diameter and furnace
Body 20 is shunk at straight barrel type or slightly, and cupola well 30 uses water cooled furnace body, can be as needed in iron mouth region domain or all setting coolings
Wall, cupola well is interior to build refractory material, protects the cupola well service life, and 30 bottom of cupola well is equipped with iron mouth 40, molten iron and clinker from 40 row of iron mouth
Out, slag iron separation is carried out in skimming tool.
The coal gas of high temperature that coke or coal dust, the coal gas to burn before air port generates carries out heat in upper shaft and the material of downlink
Exchange, 250 DEG C of gas temperature or so of stock gas export mouth, coal gas and furnace charge sufficiently exchange heat in shaft, guarantee smelting furnace
Interior heat has higher utilization efficiency.
It is equipped with coal gas between the smelting furnace upper of furnace body and feeding section 10 and exports endless tube 80, coal gas exports 80 internal pressure of endless tube
Power is controlled in tiny structure, guarantees that coal gas does not escape out, and feeding section height guarantees that outside air enters the resistance of coal gas export endless tube 80
Loss is greater than the negative pressure pressure in coal gas export endless tube 80, guarantees that the air of open type furnace roof will not be inhaled into coal gas system.
Although the present invention has been disclosed as a preferred embodiment, however, it is not to limit the invention.Skill belonging to the present invention
Has usually intellectual in art field, without departing from the spirit and scope of the present invention, when can be used for a variety of modifications and variations.Cause
This, the scope of protection of the present invention is defined by those of the claims.
Claims (8)
1. a kind of steel scrap and iron content solid waste multi-functional melt furnace, it is characterised in that: furnace body is vertical structure, and furnace body includes that top adds
Expect that section, shaft and cupola well, steel scrap and other iron-containing charges and coke are added from top feeding section, be equipped with iron mouth in bottom of furnace body,
Slag iron is discharged from iron mouth；
Smelting furnace use hot air smelting, the cupola well top be equipped with air port, hot wind is blasted by air port, be alternately arranged with air port or
Coal gas or coal dust burner are equipped with above air port.
2. steel scrap according to claim 1 and iron content solid waste multi-functional melt furnace, which is characterized in that the upper shaft is
Cylindrical or truncated cone-shaped structure.
3. steel scrap according to claim 1 and iron content solid waste multi-functional melt furnace, which is characterized in that the shaft uses water
Black furnace shell, sprayable refractory in furnace shell.
4. steel scrap according to claim 1 and iron content solid waste multi-functional melt furnace, which is characterized in that the air port uses copper
Water cooled tuyere processed, iron-containing charge are melt into molten iron above tuyere zone and drop onto cupola well, and air port is goed deep into furnace, air port region
Refractory material is built in furnace.
5. steel scrap according to claim 1 and iron content solid waste multi-functional melt furnace, which is characterized in that the burner uses oxygen
Coal burner or coal gas burner guarantee that coal dust and oxygen in inlet front end completely burned, pass through the control of air port and the burner blow rate required
System realizes the coke for reducing air port burning.
6. steel scrap according to claim 1 and iron content solid waste multi-functional melt furnace, which is characterized in that the cupola well is cylinder
Shape structure, internal diameter and shaft are shunk at straight barrel type or slightly.
7. steel scrap according to claim 1 and iron content solid waste multi-functional melt furnace, which is characterized in that the cupola well uses water
Black furnace shell, cupola well bottom are equipped with iron mouth, molten iron and clinker and are discharged from iron mouth.
8. steel scrap according to claim 1 and iron content solid waste multi-functional melt furnace, which is characterized in that the smelting furnace furnace body
It is equipped with coal gas between top and feeding section and exports endless tube, coal gas exports the control of ring overpressure in tiny structure, guarantees that coal gas does not escape
Out, feeding section height guarantees that outside air enters the drag losses of coal gas export endless tube greater than the negative pressure pressure in coal gas export endless tube
Power guarantees that air does not enter coal gas system.
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| CN201821335961.8U CN208733152U (en) | 2018-08-17 | 2018-08-17 | A kind of steel scrap and iron content solid waste multi-functional melt furnace |
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| CN201821335961.8U CN208733152U (en) | 2018-08-17 | 2018-08-17 | A kind of steel scrap and iron content solid waste multi-functional melt furnace |
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| CN208733152U true CN208733152U (en) | 2019-04-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108707714A (en) * | 2018-08-17 | 2018-10-26 | 宝钢工程技术集团有限公司 | A kind of steel scrap and iron content solid waste multi-functional melt furnace |
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2018
- 2018-08-17 CN CN201821335961.8U patent/CN208733152U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108707714A (en) * | 2018-08-17 | 2018-10-26 | 宝钢工程技术集团有限公司 | A kind of steel scrap and iron content solid waste multi-functional melt furnace |
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