CN206666572U - Utilize the process system of vanadium titano-magnetite production molten casting iron - Google Patents
Utilize the process system of vanadium titano-magnetite production molten casting iron Download PDFInfo
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- CN206666572U CN206666572U CN201720409324.XU CN201720409324U CN206666572U CN 206666572 U CN206666572 U CN 206666572U CN 201720409324 U CN201720409324 U CN 201720409324U CN 206666572 U CN206666572 U CN 206666572U
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Abstract
The utility model discloses a kind of process system that molten casting iron is produced using vanadium titano-magnetite, including stock preparation system, shaft kiln directly reduced system, gas heating system, coal dust melts subsystem, molten iron pretreatment system and lime calcining system, raw material and reducing gas are delivered to shaft kiln directly reduced system by the stock preparation system and gas heating system respectively, the DRI come out from reduction shaft furnace system enters coal dust and melts subsystem, the stock gas come out from reduction shaft furnace system enters gas heating system and lime calcining system, the titaniferous molten iron that subsystem separation is melted through coal dust enters molten iron pretreatment system, molten casting iron is generated under the cooperation of lime calcining system.Multiple smelting systems are integrated together by the utility model, improve resource utilization, and effects of energy conservation and environmental protection is notable, can be managed collectively and be coordinated from garden angle, production garden is had vigor and stronger product competition.
Description
Technical field
Metal smelt technical field is the utility model is related to, more particularly to one kind utilizes vanadium titano-magnetite production molten casting iron
Process system.
Background technology
In China Pan Xi highlands, there are very abundant v-ti magnetite ore resources, vanadium titano-magnetite is mainly used in carrying
Hot metal containing V-Ti is refined, its smelting intermediate product Ti-enriched slag can produce titanium dioxide, and blast furnace slag can be used for environment-friendly building materials, and final product contains
Vanadium-titanium-iron-water can be used for producing all kinds of hardwares, be to be widely used.Because smelting process process is relatively complicated, quantities compared with
Greatly, product is more, and each plant area is typically assigned in units of technique unit and carries out substep smelting production.Each technique separation
Afterwards, although more orderly in production management, more refine, be also easier to control, the energy needed for each production link is but not
It can well recycle, easily cause the waste of resource.With the development of science and technology, the gradual scale of industry, yield and efficiency
All increasing year by year, while also result in the worsening of ecological environment, therefore, industrial production of today increasingly payes attention to resource
Integration utilize, to save production cost, reduce disposal of pollutants, improve the cyclic utilization rate of the energy.For utilizing vanadium titanium magnetic
Iron ore produces the technique of molten casting iron, and in-between product contains higher thermal energy, and material needed for reacting needs heat energy to carry out instead
Should, if the exchange of these heat energy can be made good use of, energy resource consumption will be greatly reduced, reduce production cost.
Utility model content
To overcome existing v-bearing titanomagnetite smelting technique heat recovery rate not high, the deficiencies of causing the wasting of resources, this
Utility model technical problem to be solved is：A kind of higher the producing using vanadium titano-magnetite of comprehensive resources utilization rate is provided to cast
Make the process system of molten iron.
Technical scheme is used by the utility model solves its technical problem：
Utilize the process system of vanadium titano-magnetite production molten casting iron, including stock preparation system, shaft kiln directly reduced system
System, gas heating system, coal dust melt subsystem, molten iron pretreatment system and lime calcining system, the stock preparation system and
Raw material and reducing gas are delivered to shaft kiln directly reduced system by gas heating system respectively, are come out from reduction shaft furnace system direct
Reduced iron enters coal dust and melts subsystem progress molten iron scum separation, and the stock gas come out from reduction shaft furnace system adds into coal gas
Hot systems and lime calcining system, the titaniferous molten iron that subsystem separation is melted through coal dust enter molten iron pretreatment system, forged in lime
Molten casting iron is generated under the cooperation of burning system.
It is further that the stock preparation system includes grinding magnetic separator, batch mixer, ball press and dryer, wherein
Batch mixer send ball press to be pressed into pelletizing after the vanadium ilmenite concentrate powder that ground magnetic separator screens is mixed with coal dust and bonding agent,
Then pelletizing is sent into drying machine drying into iron-smelting raw material.
It is further that the shaft kiln directly reduced system includes raw material preparation device, material receiving device, shaft furnace body and gone out
Expect device, the raw material preparation device is sieved raw material, and acceptable material delivers to shaft furnace bodies top by material receiving device, warp
The DRI crossed after reduction delivers to fine coal by drawing mechanism and melts subsystem.
It is further that the shaft furnace body is gas base formula reduction shaft furnace, reducing gas is provided by gas heating system, from
The stock gas that shaft furnace bodies top comes out delivers to gas heating system and heating reduction generation reducing gas is carried out to coke-stove gas.
It is further that the gas heating system includes three ball heating furnaces, wherein two ball heating furnaces receive
The stock gas that shaft kiln directly reduced system comes out, the 3rd is passed through after stock gas and coke-stove gas reaction generation reducing gas
Shaft kiln directly reduced system is delivered to after seat ball heating stove heat.
Being further that the coal dust melts subsystem and melted including coal dust divides stove, after shaft kiln directly reduced system reducing
High-temperature metal pellet is transported to the molten charging aperture for dividing stove furnace roof of coal dust by chute and is sent into stove, and coal dust passes through installed in body of heater
On spray gun spray into stove in.
It is further that the lime calcining system produces quick lime under the calcining of stock gas, quick lime enters iron
Water pretreatment system is pre-processed by quick lime sulfur removal technology to molten iron, molten iron is reached foundry iron standard.
The beneficial effects of the utility model are：By by stock preparation system, shaft kiln directly reduced system, heated by gas system
System, coal dust melt multiple smelting systems such as subsystem, molten iron pretreatment system and lime calcining system and are incorporated into a production garden,
The production of integration can shorten material transport path, and the stock gas of shaft kiln directly reduced system can be other systems as supplying heat source
System provides heat energy, and so as to improve resource utilization, effects of energy conservation and environmental protection is notable, in addition, for Cast Iron Production, can accomplish specialty
Change cooperation, science layout, compact neat, be managed collectively and coordinate from garden angle, make production garden that there is vigor and stronger
Product competition.
Brief description of the drawings
Fig. 1 is the utility model process system flow chart.
Embodiment
The utility model is further illustrated below in conjunction with the accompanying drawings.
As shown in figure 1, the utility model includes stock preparation system, shaft kiln directly reduced system, gas heating system, coal
Powder melts subsystem, molten iron pretreatment system and lime calcining system, and the stock preparation system and gas heating system respectively will
Raw material and reducing gas deliver to shaft kiln directly reduced system, and the DRI come out from reduction shaft furnace system enters molten point of coal dust
System carries out molten iron scum separation, and the stock gas come out from reduction shaft furnace system enters gas heating system and lime calcining system
System, the titaniferous molten iron that subsystem separation is melted through coal dust enter molten iron pretreatment system, generated under the cooperation of lime calcining system
Molten casting iron.
The smelting of vanadium titano-magnetite, its general principle is exactly to be restored from ore iron using reducing material, and is gone back
Raw material uses coke mostly.In Panxi Diqu, coal resource is also quite abundant, and coke oven caused by coke-oven plant's production coke
Gas utilization rate is relatively low, and directly discharge can cause environmental pollution again, due in coke-stove gas containing 25% or so CH4, can profit
Vanadium titano-magnetite is reduced by the use of coke-stove gas as reducing material, and CH4 reducing power is well below CO and H2, so coke oven
Coal gas enters before shaft furnace system, it is necessary to which the CH4 in coke-stove gas is converted into CO and H2.Stock gas is passed through heated by gas system
After system, under the high temperature conditions, CO2 in CH4 and stock gas and H2O in coke-stove gas change reaction, generation CO and
H2, reaction equation are as follows：CH4+CO2=2CO+2H2, CH4+H2O=CO+3H2.This is utilized at the first of stock gas,
Another place is in lime calcining system, because vertical furnace top coal gas calorific value is high, can reach 1840kcal, utilize shaft furnace furnace roof
Coal gas calcined limestone can reach higher calcining heat, and decomposition of limestone is thorough, and Lime Quality is good, and quick lime is iron
It is used for the important source material for reducing S contents in molten iron in water pretreatment system.After the utility model integrates each production system, shaft furnace
Stock gas is fully used, and greatlys save production cost, avoids the wasting of resources.
The stock preparation system includes grinding magnetic separator, batch mixer, ball press and dryer, and wherein batch mixer will be through grinding
The vanadium ilmenite concentrate powder of mill magnetic separator screening send ball press to be pressed into pelletizing after being mixed with coal dust and bonding agent, then send pelletizing
Enter drying machine drying into iron-smelting raw material.The pellet strength just suppressed is relatively low, and, it is necessary to by drying, drying temperature is 200 DEG C or so,
Pellet strength after drying increases substantially, and is used directly for shaft kiln directly reduced.
The shaft kiln directly reduced system includes raw material preparation device, material receiving device, shaft furnace body and drawing mechanism, described
Raw material preparation device is sieved raw material, and acceptable material delivers to shaft furnace bodies top by material receiving device, after reduction
DRI delivers to fine coal by drawing mechanism and melts subsystem.Pelletizing after drying transports to pelletizing storage bin by sealing-tape machine
Row stockpiling, to ensure the normal operation of reduction shaft furnace, the effective storage time of storage bin is 4h, is fed by vibrating screen classifier
Screening, screenings (powder) is transported to filler bin by returning charge sealing-tape machine returns to dispensing by Automobile Transportation；Acceptable material is (on sieve
Thing) transported by sealing-tape machine to shaft furnace high-position lifting machine, transported by high-position lifting machine to pelletizing material receiving device and carry out material feeding.It is perpendicular
Furnace body is used to cold bound pellet being reduced into DRI.
It is further that the shaft furnace body is gas base formula reduction shaft furnace, reducing gas is provided by gas heating system, from
The stock gas that shaft furnace bodies top comes out delivers to gas heating system and heating reduction generation reducing gas is carried out to coke-stove gas.
The gas heating system includes three ball heating furnaces, wherein two ball heating furnaces receptions are shaft kiln directly reduced
The stock gas that system comes out, the 3rd ball heating furnace is passed through after stock gas and coke-stove gas reaction generation reducing gas
Shaft kiln directly reduced system is delivered to after heating.A gas heating system sent is burnt using two, can be ensured coke-stove gas fully
In CH4 be converted into CO and H2, and reducing gas is heated to 1050 DEG C or so, pelletizing metal conversion ratio can so reached
More than 90%.
The coal dust, which melts subsystem and melted including coal dust, divides stove, the high temperature metallization ball after shaft kiln directly reduced system reducing
Group is transported to the molten charging aperture for dividing stove furnace roof of coal dust by chute and is sent into stove, and coal dust is sprayed into by the spray gun on body of heater
In stove.Coal dust is molten to divide stove to be by DRI high temperature melting point, realizes slag sluicing system, DRI, which is discharged into coal dust and melted, divides stove
Temperature is 900 DEG C or so, because vanadium titano-magnetite slag melting is higher, generally requires and reaches 1600 DEG C or so.Coal dust and high temperature
Air divides furnace high-temperature conflagration molten, and theoretical temperature combustion can reach more than 2000 DEG C, DRI and high temperature cigarette
Gas carries out convection current and radiates strong heat exchange, and DRI can form clinker and molten iron by fast thawing point soon.
The lime calcining system produces quick lime under the calcining of stock gas, and quick lime enters molten iron pretreatment system
Molten iron is pre-processed by quick lime sulfur removal technology, molten iron is reached foundry iron standard.Divide because DRI is molten
During, slag making is not carried out, so S contents are higher in the obtained pig iron.Molten iron pretreatment is exactly to divide stove to smelt to obtain by molten
Molten iron in S contents be reduced to foundry iron standard.The utility model is carried out using conventional quick lime doctor treatment to molten iron
Pretreatment, required quick lime are produced by lime calcining system, and the heat needed for calcining is provided by stock gas.
The utility model by being by stock preparation system, shaft kiln directly reduced system, gas heating system, molten point of coal dust
Multiple smelting systems such as system, molten iron pretreatment system and lime calcining system are incorporated into a production garden, integrated production
Material transport path can be shortened, the stock gas of shaft kiln directly reduced system can provide heat energy as supplying heat source for other systems,
So as to improve resource utilization, effects of energy conservation and environmental protection is notable, in addition, for Cast Iron Production, can accomplish coordination based on specialization, science
Layout, compact neat, it is managed collectively and coordinates from garden angle, make production garden that there is vigor and stronger product competition
Property.
Claims (7)
1. using the process system of vanadium titano-magnetite production molten casting iron, it is characterized in that：It is direct including stock preparation system, shaft furnace
Also original system, gas heating system, coal dust melt subsystem, molten iron pretreatment system and lime calcining system, prepared by the raw material
Raw material and reducing gas are delivered to shaft kiln directly reduced system by system and gas heating system respectively, are come out from reduction shaft furnace system
DRI enter coal dust melt subsystem carry out molten iron scum separation, from reduction shaft furnace system come out stock gas enter
Gas heating system and lime calcining system, the titaniferous molten iron that subsystem separation is melted through coal dust enter molten iron pretreatment system,
Molten casting iron is generated under the cooperation of lime calcining system.
2. as claimed in claim 1 using the process system of vanadium titano-magnetite production molten casting iron, it is characterized in that：The raw material
Preparation system includes grinding magnetic separator, batch mixer, ball press and dryer, the vanadium that wherein batch mixer screens ground magnetic separator
Ilmenite concentrate powder send ball press to be pressed into pelletizing after being mixed with coal dust and bonding agent, and pelletizing then is sent into drying machine drying into refining
Iron material.
3. as claimed in claim 1 using the process system of vanadium titano-magnetite production molten casting iron, it is characterized in that：The shaft furnace
Direct-reduction system includes raw material preparation device, material receiving device, shaft furnace body and drawing mechanism, and the raw material preparation device is by original
Material is sieved, and acceptable material delivers to shaft furnace bodies top by material receiving device, and the DRI after reduction is by discharging
Device delivers to fine coal and melts subsystem.
4. as claimed in claim 3 using the process system of vanadium titano-magnetite production molten casting iron, it is characterized in that：The shaft furnace
Body is gas base formula reduction shaft furnace, and reducing gas is provided by gas heating system, the stock gas come out from shaft furnace bodies top
Deliver to gas heating system and heating reduction generation reducing gas is carried out to coke-stove gas.
5. as claimed in claim 1 using the process system of vanadium titano-magnetite production molten casting iron, it is characterized in that：The coal gas
Heating system includes three ball heating furnaces, wherein two ball heating furnaces receive the furnace roof coal that shaft kiln directly reduced system comes out
Gas, is passed through after the 3rd ball heating stove heat that to deliver to shaft furnace straight after stock gas and coke-stove gas react generation reducing gas
Connect and go back original system.
6. as claimed in claim 1 using the process system of vanadium titano-magnetite production molten casting iron, it is characterized in that：The coal dust
Molten subsystem melts including coal dust divides stove, and the high-temperature metal pellet after shaft kiln directly reduced system reducing is transported to by chute
The molten charging aperture for dividing stove furnace roof of coal dust is sent into stove, and coal dust is sprayed into stove by the spray gun on body of heater.
7. as claimed in claim 1 using the process system of vanadium titano-magnetite production molten casting iron, it is characterized in that：The lime
Calcination system produces quick lime under the calcining of stock gas, and quick lime passes through quick lime desulfurization work into molten iron pretreatment system
Skill pre-processes to molten iron, molten iron is reached foundry iron standard.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720409324.XU CN206666572U (en) | 2017-04-18 | 2017-04-18 | Utilize the process system of vanadium titano-magnetite production molten casting iron |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720409324.XU CN206666572U (en) | 2017-04-18 | 2017-04-18 | Utilize the process system of vanadium titano-magnetite production molten casting iron |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108359763A (en) * | 2018-02-23 | 2018-08-03 | 攀枝花正德环保新材料科技开发有限公司 | Vanadium titano-magnetite process equipment and processing technology |
| CN108359762A (en) * | 2018-02-23 | 2018-08-03 | 攀枝花正德环保新材料科技开发有限公司 | Vanadium-titanium magnetite reduction device and vanadium titano-magnetite processing unit (plant) |
-
2017
- 2017-04-18 CN CN201720409324.XU patent/CN206666572U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108359763A (en) * | 2018-02-23 | 2018-08-03 | 攀枝花正德环保新材料科技开发有限公司 | Vanadium titano-magnetite process equipment and processing technology |
| CN108359762A (en) * | 2018-02-23 | 2018-08-03 | 攀枝花正德环保新材料科技开发有限公司 | Vanadium-titanium magnetite reduction device and vanadium titano-magnetite processing unit (plant) |
| CN108359762B (en) * | 2018-02-23 | 2019-10-22 | 攀枝花正德环保新材料科技开发有限公司 | Vanadium-titanium magnetite reduction device and vanadium titano-magnetite processing unit (plant) |
| CN108359763B (en) * | 2018-02-23 | 2019-10-22 | 攀枝花正德环保新材料科技开发有限公司 | Vanadium titano-magnetite process equipment and processing technology |
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