CN101748232A - Low energy consumption and environmental pollution-free ironmaking device - Google Patents
Low energy consumption and environmental pollution-free ironmaking device Download PDFInfo
- Publication number
- CN101748232A CN101748232A CN200810182583A CN200810182583A CN101748232A CN 101748232 A CN101748232 A CN 101748232A CN 200810182583 A CN200810182583 A CN 200810182583A CN 200810182583 A CN200810182583 A CN 200810182583A CN 101748232 A CN101748232 A CN 101748232A
- Authority
- CN
- China
- Prior art keywords
- iron
- less energy
- environmental
- smelting device
- consumption
- 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.)
- Pending
Links
Images
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a low energy consumption and environmental pollution-free ironmaking device, which is formed by connecting a plurality of independent reaction modules end to end. Each reaction module consists of a motor, a reducer, a coupler, a temperature control unit, an insulating layer, a screw tube, a crew, and a connecting pipe connected with an end part of a screw of another module; the tail of the screw is connected with the coupler connected with the motor and the reducer; and the core of the screw is sleeved with the screw tube which is coated with the temperature control unit. The device adopts a modular design; and the whole set of device can adopt different module numbers and different module combining modes according to actual production requirements, integrates five functions, namely low energy consumption heating, material conveying, reactor, afterheat recovery and waste gas solidification, greatly reduces the equipment number and complexity, is simple and reliable, and can simultaneously realize environmental protection, energy conservation, and large-scale ironmaking production.
Description
Technical field
The present invention relates to smelting equipment, specifically, the present invention is the iron-smelting device of a kind of less energy-consumption, non-environmental-pollution.
Background technology
Human utilization to iron and steel has the history above thousand, and iron and steel is mathematical to the contribution of Development of Human Civilization.Along with development of productivity, people, thereby have higher requirement to the technology of smelting iron and steel no matter be to propose more and more higher requirement on the matter or on the amount to the demand of iron and steel.
Along with the development of smelting technology, blast furnace production also develops on an unprecedented scale, and furnace volume is constantly enlarging.Blast furnace ironmaking develops into today, consume to descend, and cost reduces, and productivity almost reaches the peak, makes huge contribution for human civilization and Economic development, remains the main force of Iron and Steel Production now.In world's Iron And Steel Industry, the supply about 60% of conversion pig is from blast furnace, and China is almost 100% from blast furnace ironmaking.Yet along with development of times, under the constraint of conditions such as resource, environment, efficient, blast furnace ironmaking production has but run into new challenge, and the most development from blast furnace self of these challenges.
These challenges are mainly reflected in:
To furnace charge require high, supporting link is many, it is huge to invest
For guaranteeing the ventilation property of the stock column that coke and iron ore constitute, blast furnace burden must be block, and has than uniform grain sizes, just need carry out agglomeration (sintering, pelletizing) processing to breeze.From smelting iron preceding stock yard to sintering (pelletizing) factory, coke-oven plant, arrive system for blast furnace ironmaking again, Production Flow Chart is very long, and gross investment is very huge.
2. the production cost height is difficult to satisfy environmental protection requirement
Blast furnace ironmaking must use coke, yet the resource of coking coal is fewer and feweri, and coke resource is non-renewable, and coke price is risen sharply, and has caused the significantly rising of pig iron cost.The production of agglomerate, pellet and coke and these crude fuels pollute can in the process that satisfies blast furnace production atmosphere, water and environment.More and more higher environmental requirement makes the development of blast furnace technology more and more be difficult to satisfy the demand.
3. production efficiency near limit
As everyone knows, traditional blast furnace relies on indirect reduction excessively, and about 2/3 oxygen is removed by indirect reduction in the ore, so ferriferous oxide reduces in blast furnace and melting generally will stop for a long time, and promptly putting into blast furnace casting from furnace charge needs 6.5～7 hours.Although blast furnace has adopted various strengthening smelting technology, this dependence gas-solid reaction is that main melting technology wants to continue to boost productivity very difficulty.
Blast furnace ironmaking production runs into unprecedented challenge, and various new iron-smelting process methods continue to bring out, and wherein just comprise direct reductive iron smelting method.
It is the energy that the direct reduction iron making method is limited to geseous fuel, liquid fuel or mill coal, is the method that obtains metallic iron of reducing below iron ore (or iron content agglomerate) is solid-state softening temperature.This metallic iron is because reduction temperature is low, and it is spongy that product is the porous low density, is called direct-reduced iron (DRI) or sponge iron.DRI is because its stable components, harmful element content is low, the metal inclusion element that particularly is difficult for oxidation is few, epigranular not only can be replenished the deficiency of steel scrap resource, and as the raw material of Electric furnace steel making and the refrigerant of converter steelmaking, to guaranteeing the quality of steel, particularly the quality of steel alloy plays irreplaceable effect, is the high quality raw material of steel-making.According to the Japanese kobe steel prediction, direct-reduced iron output will be 10,700 ten thousand t in 2010.
Directly reducing and smelting is divided into directly reduction three major types of gas base directly reducing, coal-based direct reduction and electricity according to the difference of the main body energy with it.Wherein, electricity directly reduction is a main energy sources with electric power, because will consume a large amount of electric power, how to stop production at present.The coal-based direct reduction method exists that production efficiency is low, industrial scale is little, temperature of reaction is high, occurs the shortcoming of ring formation dross easily, and use range is limited.
Gas base directly reducing becomes direct-reduced iron to produce topmost method owing to have advantages such as production efficiency height, energy consumption are low, processing ease, accounts for more than 90% of DRI ultimate production.But because of being subjected to the limitation of regional distribution, this method mainly is distributed in the abundant area of natural gas sources such as the Middle East, South America.The comparatively energy-conservation technology of representative has Midrex shaft furnace process, HYL retort process making sponge iron etc.
1. Midrex shaft furnace process.The Midrex shaft furnace process is the leading technology of gas base directly reducing iron production technology, and this technology has accounted for direct-reduced iron market more than 60% at present by the exploitation of Midland Ross company.Pelletizing or lump ore are reduced by Sweet natural gas in shaft furnace, generate DRI.This processing requirement has abundant Sweet natural gas, and productive capacity is higher, and investment is big.
2. HYL retort process making sponge iron.Raw natural gas is at first used active carbon desulfurization, mixes with the excessive water steam then, carries out catalyzed reaction under 850 ℃-1050 ℃.The retort group is made up of a plurality of retort.There is the complicated reducing gas pipeline of a cover to be connected between the retort.High temperature reduction gas feeds main reduction jar, will become sponge iron through the ore reduction of preheating and prereduction.Complex process, equipment is numerous, and investment is big.
Summary of the invention
The purpose of this invention is to provide a kind of iron-smelting device, this iron-smelting device has the advantage of less energy-consumption, non-environmental-pollution.
Reach environmental protection requirement at China's iron ore deposit and colliery resource particularity, press for a kind of iron-smelting device of less energy-consumption non-environmental-pollution in the market, this device can solve the deficiency of direct reduction iron making in the past well, also energy-saving and environmental protection, make realize simultaneously environmental protection, energy-conservation, ironmaking is produced on a large scale becomes possibility.
In order to realize above-mentioned goal of the invention, the present invention by the following technical solutions:
A kind of iron-smelting device of less energy-consumption non-environmental-pollution, be formed by connecting from beginning to end mutually by some independent reaction modules, each reaction module is made up of motor, speed reduction unit, shaft coupling, temperature conditioning unit, thermal insulation layer, barrel, screw rod, the connecting piece that is connected with the screw rod end of other module, screw rod tail is connected to shaft coupling, and shaft coupling is connected to motor and speed reduction unit; Be with barrel at the screw rod core, be coated with temperature conditioning unit on the barrel.
This iron-smelting device uses the advantage of independent reaction module to have: (1), avoid long barrel because deadweight and excessive temperature differentials cause deformation; (2), avoid worm drive moment excessive, cause machinery instability; (3), can carry out sectional temperature control to material, help the carrying out that reacts; (4), every section material is applied suitable heat, fully save the energy.(5), modularly manufacture and design, different materials and production scene are had splendid adaptability, accomplish the universalization of equipment, at utmost save human and material resources, and greatly shorten the iron work construction period.
Described temperature conditioning unit is less energy-consumption heating unit, airtight thermal oil water cooler or sealing and circulating watercooler.The less energy-consumption heating unit is responsible for providing reaction temperature required condition, can be any direct or indirect thermal source.The less energy-consumption heating unit can be resistance heater, infra-red heat pipe heater or interchanger usually.
Motor constitutes the adjustable propulsion source of rotating speed provides power from rotation to screw rod by speed reduction unit, shaft coupling.
Pass through the angled binding of connecting piece between each module; The angle angle of level is 0 °～90 ° between each module that described mutual head and the tail connect.Wherein, preferable angular range is 0 °～15 °, and best angle is 15 °, and owing to the deadweight of itself, high-order material tamps and form the necessary airtight atmosphere of reaction automatically on the low level material material in barrel.
When being transmission, described shaft coupling can adjust the transmission mechanism of central position at any time.This is because barrel and screw rod in heat-processed deformation can take place, and causes the change of screw rod central position, so must use can adjust the reliable transmission that the transmission mechanism of central position could guarantee power at any time.
Described shaft coupling is various elasticity, flexible or universal joint mode of connection.
Described barrel is airtight barrel.This is because the process of reduction iron production must guarantee isolated to oxygen, so barrel must be airtight.
The material of barrel, screw rod is anti-600 ℃-1300 ℃ various metals, non-metallic material.Reduction iron production has higher requirements to temperature, and only bearing the pyritous material can be as the device fabrication materials.
The extremely important characteristics that described iron-smelting device is different from existing iron-smelting device are exactly to utilize thermal conduction to realize the heating of material, and the thermo-efficiency height has greatly reduced the idle work generation, reduces the energy consumption of ironmaking.
Described temperature conditioning unit is less energy-consumption heating unit, airtight thermal oil water cooler or sealing and circulating watercooler.Each reaction module, temperature conditioning unit are that optional it is a kind of for the three.Use the less energy-consumption heating unit at the reduction iron production process need, provide reaction necessary temperature condition; When iron manufacturing process is finished, when beginning to collect product, then utilize airtight thermal oil water cooler or sealing and circulating watercooler to reclaim the waste heat that high-temperature product had.
In order to make material in equipment, carry smooth and easy and to guarantee closed atmosphere, require material to fill up space between screw rod and the barrel.But because material is rarefaction when access arrangement, and along with the carrying out that reacts, the ferro element experience Fe in the material
2O
3-Fe
3O
4The conversion process of-FeO-Fe, its unit weight presents variation tendency from low to high, in order to guarantee that material fills up space between screw rod and the barrel and needs to change according to tap density in the material reaction process and adjust each independent reaction module corresponding rotating speeds, reach the purpose of each independent reaction module synchronous transport with the volume material, tried definite, each independent reaction block motion velocity contrast is between 1-9.
Airtight thermal oil water cooler, sealing and circulating watercooler are to be wrapped in the spiral conveyer skin that radiating fin is equipped with on the surface, utilize thermal oil, water or other heat-conducting medium recovery waste heats.Waste heat is used for drying, generating and the chemical reaction purposes of material, further to reach purpose of energy saving.
As long as increase or reduce single reaction module, enlarge or dwindle the barrel screw diameter, can increase, reduce and smelt iron output.
Motor and speed reduction unit can be rotating speed adjustable also can be that rotating speed is non-adjustable.
Material is formed by the proper ratio compatibility by iron compound, carbonate, coal, additive, and concrete ratio is determined according to iron compound character.In the iron manufacturing process, by the CO of contained C in the coal and the generation of carbonate decomposes
2Reaction directly generates reducing gas CO, and by the ferro element in the CO reduction iron compound, the realization ferro element separates with other elements, reaches the purpose of ironmaking.Impurity such as the sulphur in the raw ore, phosphorus, silicon then are fixed in the solid ash content, can not cause other pollutions to environment, and simultaneously, the smart iron of generation is because sloughing of this type of harmful element also becomes the raw material of fine steel-making, casting and powder metallurgy.
Iron compound in the material includes but not limited to: magnetite, rhombohedral iron ore, limonite, spathic iron ore, martite, ilmenite, sefstromite, pyrrhotite, pyrite and iron content slag, iron content dust, iron-containing tailing, sulfate slag etc.; Material shapes can be granular, powdery, column, bulk, pelletizing shape etc.
As material is the high grade iron ore, and the product of generation then can have characteristics such as iron level height, ash content are low, and it can be used as furnace charge and directly drops into steel melting furnace, and can remove waste-heat recovery device this moment, and charging temperature reaches more than 800 ℃.Thereby avoid cooling and reheat, very save the energy material.
When the material grade is low, the product TFe of generation is below 90%, not can be used as furnace charge when directly dropping into steel melting furnace, and then to its cooling, recovery waste heat is worn away magnetic separation then and handled, and makes product grade reach requirement.In order to prevent that as-reduced iron again be oxidized, also need product is carried out Passivation Treatment simultaneously, finally make product meet steel-making, casting and powder metallurgy requirement.
The present invention has following advantage:
Owing to adopted technique scheme, the present invention compared with existing device, technical matters have following advantage and effect:
A, this device adopt modular design, complete assembly can adopt different module numbers and array mode according to needs of production, integrate less energy-consumption heating, mass transport, reactor, waste heat recovery and waste gas and solidify five functional, significantly reduce number of devices and complexity, simple and reliable;
B, provide material reaction institute heat requirement by the less energy-consumption heating unit, the preliminary realization cuts down the consumption of energy;
C, by the power unit that motor, speed reduction unit, shaft coupling are formed, adjustability, reliability are all very high, to material and working condition wide accommodation;
D, material move between each module, because necessary closed environment is reacted in device particular design and the spontaneous formation in device of spiral motion mode;
E, owing in a covering device, directly produce reducing gas and slough harmful elements such as sulphur, phosphorus, the number of devices and the investment of iron manufacturing process have been significantly reduced, greatly simplified the technical process of ironmaking, realized that also the environmental pollution that iron industry is pursued for many years minimizes;
F, can realize the conversion of expecting product from former through single equipment, production efficiency is greatly improved, saving equipment and investment, and economic benefit is very remarkable, the product of Sheng Chenging also has the extremely low characteristic of objectionable constituent simultaneously, is the raw material of fine steel-making, cast iron, powder metallurgy;
G, last two joint modules are used the waste heat of airtight thermal oil water cooler and sealing and circulating watercooler recovered material respectively, further realize the purpose of less energy-consumption, have also reduced the thermal pollution to environment simultaneously;
H, thermal insulation layer have stoped the thermosteresis of whole plant greatly, improved the capacity usage ratio of equipment, it finally realizes the utmost point less energy-consumption of whole plant with less energy-consumption type of heating, waste heat recovery and unique production process, compares still energy-conservation more than 10% with the most energy-conservation ironmaking mode that has existed;
I, adopt screw to convey materials, can increase material and reagent contact area and strengthen the walking path of material in limited space, enhancement of heat transfer and guarantee the reaction times can be guaranteed the rapid reaction of material, realizes that simultaneously a large amount of of material carry fast;
The rotation of j, screw rod is also played such as: even heating material except the effect of playing convey materials, is strengthened effect such as material heating surface area, corresponding screw rod parameter and tube wall parameter all can adjust accordingly according to different material and reaction, improve the versatility and the adaptability of equipment greatly;
K, have advantages such as less investment, production efficiency height, energy consumption are extremely low, environmentally safe, thereby market outlook are very wide.
Description of drawings
Fig. 1 is a plan structure synoptic diagram of the present invention.
Fig. 2 is a side-looking structural representation of the present invention.
Description of reference numerals: 1. motor and speed reduction unit; 2. shaft coupling; 3. heating unit; 4. thermal insulation layer; 5. barrel; 6. screw rod; 7. connecting piece; 8. airtight thermal oil water cooler; 9. sealing and circulating watercooler.
Embodiment
As depicted in figs. 1 and 2, a kind of iron-smelting device of less energy-consumption non-environmental-pollution, be formed by connecting from beginning to end mutually by four independent reaction modules, every deblocking reaction module is made up of motor and speed reduction unit 1, shaft coupling 2, temperature conditioning unit, thermal insulation layer 4, barrel 5, screw rod 6, the connecting piece 7 that is connected with screw rod 6 ends of other module, screw rod 6 afterbodys are connected to shaft coupling 2, and shaft coupling 2 is connected to motor and speed reduction unit 1; Be with barrel 5 at screw rod 6 cores, be coated with temperature conditioning unit on the barrel 5.
As shown in Figure 1, temperature conditioning unit specifically is less energy-consumption heating unit 3, airtight thermal oil water cooler 8 or sealing and circulating watercooler 9.Less energy-consumption heating unit 3, airtight thermal oil water cooler 8, sealing and circulating watercooler 9 are installed in respectively on the different reaction modules.
Angle between each module of head and the tail connection is 15 ° mutually, as shown in Figure 2.Barrel is airtight barrel, and material is the autonomous necessary airtight atmosphere of reaction that forms in barrel.
Shaft coupling is a universal joint.Can change the transmission mechanism of central position at any time in the time of also can adopting other transmission, as be flexible coupling.
Whole system is combined by connecting piece 7 by some independent reaction modules, the power of screw rod 5 rotations is provided by shaft coupling 2 by motor and speed reduction unit 1 in the individual module, provide heat to add thermal material by less energy-consumption heating unit 3 to barrel 5, make additive and coal reaction generation reducing gas CO and desulfurization, dephosphorizing agent, iron compound in the material and reducing gas reaction generate iron and other materials, wherein sulfur-bearing, phosphorous waste gas are desulfurized, dephosphorizing agent is solidified into sulphite, phosphite etc., finally realize separating and environment not being polluted of iron and other materials.Material is driven by screw rod 6 and is exported from hopper, and for the helical movement in entire equipment, is subjected to the shearing and the mixing effect of screw rod 6 simultaneously, the generation product that in reactor, reacts, and product is discharged from a whole set of reaction unit and enters subsequent process steps subsequently.Each independent reaction module all is covered with thermal insulation layer 4, stops scattering and disappearing of heat.At last airtight thermal oil water cooler 8 of several module barrel 5 external applications or sealing and circulating watercooler 9 recovery waste heats.
Get 10 tons of full iron 45% powdery high-phosphor oolitic hematites, 1.35 tons of pulverized anthracites, 0.3 ton in lime carbonate, send in this device after 0.1 ton of mixing of yellow soda ash, 950 ℃ of constant temperature, material total residence time 60 minutes in device, the finished product of output degree of metalization 92%, finished product through wear away, after the magnetic separation, tempering drying 4.16 tons of full iron 96% pig iron powders, waste heat is used for generating.
Get complete 10 tons in iron 40% powdery limonite (having removed interior water), 1.2 tons of pulverized anthracites, send in this device after 0.4 ton of mixing of lime carbonate, 1050 ℃ of constant temperature, material total residence time 40 minutes in device, the finished product of output degree of metalization 94%, finished product through wear away, after the magnetic separation, tempering drying 3.7 tons of full iron 97% pig iron powders, waste heat be used for generating and limonite predrying.
Get 10 tons in the smart powder of full iron 67% magnet, 1.9 tons of pulverized anthracites, 0.2 ton in lime carbonate, send in this device after making ball and drying after 0.2 ton of mixing of water glass, 1100 ℃ of constant temperature, material total residence time 55 minutes in device, 7.2 tons of the sponge irons of output degree of metalization 95%, full iron 96% also directly drop in the steel melting furnaces and make steel.
Get full iron 42% through 10 tons of levigate steel slag magnetically dressings, 1.1 tons of pulverized anthracites, 0.2 ton in lime carbonate, send in this device after 0.2 ton of mixing of yellow soda ash, 1150 ℃ of constant temperature, material total residence time 65 minutes in device, the finished product of output degree of metalization 92%, finished product through wear away, after the magnetic separation, tempering drying 3.84 tons of full iron 91% pig iron powders, waste heat is used for generating.
Get 10 tons of full iron 56% powdery vanadium titano-magnetites, 1.7 tons of pulverized anthracites, 0.1 ton in lime carbonate, send in this device after 0.3 ton of mixing of yellow soda ash, 1100 ℃ of constant temperature, material total residence time 80 minutes in device, the finished product of output degree of metalization 94%, finished product through wear away, after the magnetic separation, tempering drying 5.2 tons of full iron 96% pig iron powders, waste heat is used for generating electricity and leaches the vanadium titanium of mine tailing.
Get 10 tons of full iron 54% powdery ilmenites, 1.6 tons of pulverized anthracites, 0.1 ton in lime carbonate, send in this device after 0.3 ton of mixing of yellow soda ash, 1100 ℃ of constant temperature, material total residence time 80 minutes in device, the finished product of output degree of metalization 94%, finished product through wear away, after the magnetic separation, tempering drying 5 tons of full iron 96% pig iron powders, waste heat is used for generating electricity and leaches the titanium of mine tailing.
More than the iron-smelting device of less energy-consumption non-environmental-pollution provided by the present invention is described in detail, used specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (10)
1. the iron-smelting device of a less energy-consumption non-environmental-pollution, it is characterized in that: some independent reaction modules head and the tail mutually are formed by connecting, each reaction module is made up of motor, speed reduction unit, shaft coupling, temperature conditioning unit, thermal insulation layer, barrel, screw rod, the connecting piece that is connected with the screw rod end of other module, screw rod tail is connected to shaft coupling, and shaft coupling is connected to motor and speed reduction unit; Be with barrel at the screw rod core, be coated with temperature conditioning unit on the barrel.
2. the iron-smelting device of less energy-consumption non-environmental-pollution according to claim 1 is characterized in that: described temperature conditioning unit is less energy-consumption heating unit, airtight thermal oil water cooler or sealing and circulating watercooler.
3. the iron-smelting device of less energy-consumption non-environmental-pollution according to claim 1 is characterized in that: the angle angle of level is 0 °～90 ° between each module that described mutual head and the tail connect.
4. the iron-smelting device of less energy-consumption non-environmental-pollution according to claim 3 is characterized in that: the angle angle of level is 15 ° between each module that described mutual head and the tail connect.
5. the iron-smelting device of less energy-consumption non-environmental-pollution according to claim 1 is characterized in that: the transmission mechanism that can adjust the central position when described shaft coupling is transmission at any time.
6. the iron-smelting device of less energy-consumption non-environmental-pollution according to claim 5 is characterized in that: described shaft coupling is elasticity, flexible or universal joint mode of connection.
7. the iron-smelting device of less energy-consumption non-environmental-pollution according to claim 2 is characterized in that: described less energy-consumption heating unit is resistance heater, infra-red heat pipe heater or interchanger.
8. the iron-smelting device of less energy-consumption non-environmental-pollution according to claim 1 is characterized in that: described barrel is airtight barrel.
9. the iron-smelting device of less energy-consumption non-environmental-pollution according to claim 2 is characterized in that: described airtight thermal oil water cooler, sealing and circulating watercooler are to be wrapped in the spiral conveyer skin that radiating fin is equipped with on the surface.
10. the iron-smelting device of less energy-consumption non-environmental-pollution according to claim 1, it is characterized in that: can change according to tap density in the material reaction process and adjust each independent reaction module corresponding rotating speeds, reach the purpose of each independent reaction module synchronous transport with the volume material, each independent reaction block motion velocity contrast is between 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810182583A CN101748232A (en) | 2008-12-09 | 2008-12-09 | Low energy consumption and environmental pollution-free ironmaking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810182583A CN101748232A (en) | 2008-12-09 | 2008-12-09 | Low energy consumption and environmental pollution-free ironmaking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101748232A true CN101748232A (en) | 2010-06-23 |
Family
ID=42475843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810182583A Pending CN101748232A (en) | 2008-12-09 | 2008-12-09 | Low energy consumption and environmental pollution-free ironmaking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101748232A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110491454A (en) * | 2019-08-09 | 2019-11-22 | 中冶赛迪工程技术股份有限公司 | A kind of blast furnace process cost management method, system and computer can storage mediums |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2599496Y (en) * | 2003-01-23 | 2004-01-14 | 郭晓兰 | Powder material modified colour-changing processing device |
-
2008
- 2008-12-09 CN CN200810182583A patent/CN101748232A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2599496Y (en) * | 2003-01-23 | 2004-01-14 | 郭晓兰 | Powder material modified colour-changing processing device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110491454A (en) * | 2019-08-09 | 2019-11-22 | 中冶赛迪工程技术股份有限公司 | A kind of blast furnace process cost management method, system and computer can storage mediums |
| CN110491454B (en) * | 2019-08-09 | 2022-11-18 | 中冶赛迪工程技术股份有限公司 | Blast furnace smelting cost management method and system and computer-storable medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110423854B (en) | Electric energy full-hydrogen flash reduction direct steelmaking system and process | |
| CN103667571B (en) | System and method of fluidized direct reduction of iron ore concentrate powder | |
| CN101260448B (en) | Fusion reduction iron-smelting method for directly using concentrate powder | |
| CN110438277B (en) | Cyclone flash reduction direct steelmaking system and process | |
| CN103725819B (en) | Iron ore powder fluidized reduction system and method | |
| CN102337369B (en) | High-wind-temperature rotational flow injection disturbance melting reduction and prereduction combination device and method | |
| CN112410494B (en) | Iron-making device and method capable of applying suspension melting reduction of fine-grained fine ores | |
| CN1036075C (en) | Fusion reducing iron smelting method and its equipment | |
| CN104878147A (en) | Method for making iron by smelting reduction | |
| CN103695588B (en) | System and method for reducing powdery iron ore by fluidized beds | |
| CN104212930A (en) | BAOSHEREX (Baosteel-Shenghua high efficiency smelting reduction) ironmaking process for smelting molten iron by two-step method | |
| CN104673954A (en) | Direct-reduction ironmaking method and system for iron-containing mineral powder | |
| CN105219907A (en) | The iron-smelting process of high-phosphor oolitic hematite gas base directly reducing-mill ore magnetic selection | |
| CN112899427A (en) | Hydrogen shaft furnace iron making system and method using electric energy for heating | |
| CN101215614A (en) | Reducing chamber and heating chamber multilayer obturation alternation and fusion gasification combination metal smelting method | |
| CN115449579B (en) | Low-carbon smelting reduction iron-making method and device | |
| CN101928800A (en) | Method for directly reducing carbon-bearing ferromagnetic metal pellets by adopting sensible heat of raw gases | |
| CN103160302B (en) | Processing method of metallurgical dust mud containing iron carbon zinc | |
| CN107779534B (en) | Process for treating zinc-containing and iron dust and mud in iron and steel plant by shaft furnace method | |
| CN1248632A (en) | Coal oxygen fused reduction iron-smelting method and apparatus | |
| CN1818082A (en) | Iron and steel gas based smelting and reducing process with iron-ore powder pre-reduced | |
| CN202279831U (en) | High blast temperature swirl injection perturbation smelting reduction and pre-reduction integrated device | |
| CN112391523A (en) | High SiO2Roasting control method for process of flux pellet rotary kiln | |
| CN201317786Y (en) | Low energy consumption and environmental pollution-free iron making device | |
| CN102127610B (en) | Ironmaking equipment and process for direct smelting reduction of iron ore |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20100623 |