CN203794916U - Online quality modification device of hot state molten slag - Google Patents

Online quality modification device of hot state molten slag Download PDF

Info

Publication number
CN203794916U
CN203794916U CN201420096562.6U CN201420096562U CN203794916U CN 203794916 U CN203794916 U CN 203794916U CN 201420096562 U CN201420096562 U CN 201420096562U CN 203794916 U CN203794916 U CN 203794916U
Authority
CN
China
Prior art keywords
slag
chamber
upgrading
iron
hole
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.)
Withdrawn - After Issue
Application number
CN201420096562.6U
Other languages
Chinese (zh)
Inventor
苍大强
李宇
代文彬
赵贵州
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.)
Beijing University of Technology
University of Science and Technology Beijing USTB
Original Assignee
University of Science and Technology Beijing USTB
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 University of Science and Technology Beijing USTB filed Critical University of Science and Technology Beijing USTB
Priority to CN201420096562.6U priority Critical patent/CN203794916U/en
Application granted granted Critical
Publication of CN203794916U publication Critical patent/CN203794916U/en
Withdrawn - After Issue legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies

Abstract

The utility model relates to the field of metallurgical high-temperature molten slag sensible heat utilization and resource efficient comprehensive utilization, and provides an online quality modification device of hot state molten slag. The device can be used for utilizing molten slag sensible heat and preparing high-quality modified molten slag. The device comprises the following components: a top plug, a quality modification furnace body, a primary air port, a secondary air port, a tertiary air port, a cyclone furnace hearth, a stirring paddle, a separation wall, a slope tank bottom, a molten slag discharge hole, an iron liquid discharge hole, a slag-iron separation wall, a flue, a handle, a pressure relief hole, a combustion observation hole, an ignition burner, a quality modification chamber observation hole, a concurrent heating burner, a slag discharge chamber observation hole, a liquid flow hole, a feeding hole, a sampling hole, a quality modification chamber, a slag-iron separation chamber, a slag discharge chamber and a cyclone furnace body. The obtained high-quality modified molten slag treated by the device can be directly used for the field of building materials, industries and the like, and also can be used for recycling metal iron from iron-containing molten slag. The device is simple in operation, low in running cost and wide in application range, and has relatively good application prospects and economic values.

Description

The online modifying apparatus of a kind of hot slag
Technical field
The utility model relates to the utilization of metallurgy high temperature dross sensible heat and resource high-efficiency comprehensive utilization field, provides a kind of hot slag online modifying apparatus.
Background technology
In the metallurgy industries such as iron and steel, there is the liquid metallurgical slag of more than one hundred million tons to need discharge every year, as blast furnace slag, slag, ferronickel slag, stainless steel slag etc.In these metallurgical cinders, not only contain many useful inorganic components, as CaO, SiO 2, Al 2o 3, MgO etc., also contain the remaining metallic element that can extract again recovery, as Fe, Mn, Cr, Ni etc.Slag outflow temperature is at 1200~1650 ℃, and heat enthalpy value is at 1.6~1.7GJ/t, and ton slag calorific value is equivalent to 50~60kg standard coal, has very high residual heat resources.Along with the production capacity of metallurgy industry production is in recent years excessive, autonomous industry economic benefit is low, and the regional pollution weather such as long-time haze that occur of most of China, cause responsibility and the pressure such as the industries such as metallurgy, cement backward production facilities on the verge of being replaced, energy-saving and emission-reduction, environmental pollution improvement.By fully utilizing the resources such as high temperature discard slag, waste residue waste heat and other solid waste that produce in the industry production processes such as metallurgy, can reach and change enterprise product production structure, reduce energy consumption, reduce production costs, can digest again the upper large solid waste producing of industry and society, turn waste into wealth, thereby reduce and curb environmental pollution, realize sustainable green economy development.
At present, in the smelters such as iron and steel, the molten slag of discharging mainly passes through: 1) directly pour slag ladle, slag basin etc. into and contain in slag container or place, then by naturally lowering the temperature or beating a small amount of water forced cooling solidified slag, as steelmaking slag, refining slag, ferronickel slag etc.; 2) directly pour pond or bath quenching into, as blast furnace slag etc.; 3), by high-velocity jet gas shock quenching, form the solid slag of granulation, the recyclable heat exchange of the hot flue gas of part.Although industrial treatment slag method is varied, be mainly natural air cooling or water-cooled, new water consumption is large, and dust pollution is serious, and waste heat is not recycled.
In addition, after the slag cooling curing of discharge, certain applications are in the low value-added fields such as laying road, concrete coarse-fine aggregate, slag cement, and all the other are discarded banking up, causes groundwater pollution, dust pollution, land occupation resource etc.Gu residual metal element does not reclaim through second extraction yet in slag, reduced the economic return of open pit mining.And solid slag before use, need to carry out corresponding processing technique, as oven dry, fragmentation, screening, ball milling, magnetic separation etc., causes the shortcomings such as processing technological flow is long, equipment attrition is serious, operation energy consumption is high, residue product composition is unstable.Even in some Application Areass, as glass industry, Gu slag also need through secondary fusion to obtain satisfactory chemical constitution, thereby increased energy consumption and manufacturing cost.
In the research of reclaiming at some melting slag waste heats, main method is: slag, through media such as directly contact water or gases, transfers heat to medium, and medium is again by waste heat boiler, heat transmission and be converted into overheated saturation steam, in order to generating or heating etc.Although melting slag waste heat is through certain recycling, equipment takes up an area large, and heat transmission conversion process is long, and thermo-efficiency is low, belongs to Physical waste heat recovery.And cooled solid slag chemical constitution is constant, subsequent disposal processing difficulties.
At high-temperature slag, process in application, rarely have at present a kind for the treatment of process of maturation generally to be promoted, this be mainly because: 1) recycling of residue material and slag waste heat can not effectively be coordinated; 2) apparatus and process has high input, and takes up an area large; 3) technical study achievement can not be connected mutually with actual field production condition; 4) to relate to field many for technology, manage wide; 5) composite technology technological development difficulty is large, and enterprise's attention degree is low etc.Therefore, researching and developing a kind of slag Technology that can simultaneously meet above condition, is one of problem of urgently solving of current high energy consumption industry.
It is a promising technological line of tool that the slag of producing discharge is directly carried out to pyrochemistry melt upgrading, by directly add modification agent in slag, and utilize cinder high-temperature heat, under certain measure, be that slag and modification agent mix, thereby directly produce operable upgrading residue product; Residual metal element in while slag, as iron, manganese etc., aggregate and precipitate after being reduced into molten metal, sells outward as addition product.And, still lack the related data of this technical study at present at home and abroad.
The subject matter of upgrading process is how a large amount of modification agents to be mixed and to be realized concurrent heating to heat up with molten slag, this needs a device to realize this stirring and two processes of concurrent heating, and the patent (CN1148409A of relevant slag upgrading or recovery iron, CN101713008A, CN101643371A) in, mostly do not refer to concrete equipment, and the modifying process of recrement etc.At present, the patent that can see " a kind of method of extracting iron from melted reduced nickel slag and device " (CN101713008A), having realized reduction in the discarded nickel slag of metallurgy reclaims residual metallic iron element and remains solid slag resource for the object of manufacture of cement, but the method is used electric energy heating, and smelting cost is relatively high.The ferro element in reducing slag of take is main purpose, and remaining slag is not further processed upgrading, and recrement range of application is limited.In nickel slag raw material, residual iron level higher (40%), reaches middle iron ore of low ore grade level, and the method is difficult for being applied to the residue resource that iron level is low.Patent " two melting bath reduction nickel slag blowing furnace with oxygen coal guns " (CN201382694Y), utilize coal spouting gun and slag former to nickel slag reduce, concurrent heating and slag making, the molten iron of reduction can be used for the production of atmospheric corrosion resistance steel grade, but it is large that the method operation control difficulty, winding-up are polluted, and industrial being difficult to applied; Meanwhile, the method main purpose is to reclaim valuable metal in slag based on reduction, and the homogeneity of final recrement is considered not, to fail to guarantee slag quality.Patent " a kind of method that fully utilizes high temperature nickel smelting slag " (CN101020968A) is smelted slag for nickel, propose a kind of remaining valuable metal and utilize the method for comprehensive utilization of remaining slag resource of reclaiming, but do not proposed feasible equipment configuration.Patent " a kind of liquid steel slag treatment process and device " (CN101691620A) utilizes gas as medium; reclaim the waste heat in slag; realize the granulation of slag; but do not realize slag upgrading; and dependence physical method recovery waste heat; all the other heat recovery efficiencies are also lower, and industrial being difficult to realizes.
Visible, how to obtain effective cinder high-temperature process upgrading equipment, can realize effective concurrent heating and uniform stirring, can conveniently control, guarantee upgrading slag quality, become the key point that pyrometallurgy melting slag waste heat utilizes and high-value-use technology industrialization is applied simultaneously.
Utility model content
Technical problem to be solved in the utility model is: the online modifying apparatus of a kind of hot slag is the reforming reactor of the hot slag of high temperature that discharges in online treatment industrial production, can solve the concurrent heating in slag and modification agent mixing process and two hang-ups that stir, and convenient operation is controlled, be applicable to the slag of discharging continuously, be also applicable to the slag that intermittent type is discharged.Thought of the present utility model is the advantage that combines whirlwind heating and glass melter, has manufactured a kind of online modifying apparatus of hot slag by whirlwind heating zone and the combination of modification melting section.
The described online modifying apparatus of a kind of hot slag, it is upgrading stove, forming structure comprises: top plug 1, upgrading body of heater 2, primary air nozzle 3, overfiren air port 4, tertiary air orifice 5, turbofurnace 6, stirring rake 7, divider wall 8, at the bottom of pond, slope 9, slag outlet orifice 10, iron liquid outlet orifice 11, the separated wall 12 of slag iron, flue 13, handle 14, relief hole 15, burning vision slit 16, igniter burner 17, upgrading chamber vision slit 18, concurrent heating burner 19, deslagging chamber's vision slit 20, liquid flow hole 21, charge cavity 22, thief hole 23, upgrading chamber 24, Zha Tie separate chamber 25, deslagging chamber 26, whirlwind body of heater 27.
Upgrading stove is comprised of whirlwind heating zone and modification melting section.Different from other patent, this device whirlwind heating zone therein solves a concurrent heating difficult problem for upgrading process, realized the adding of modification agent, concurrent heating and fusing, this method is being controlled concurrent heating temperature and is being added modification agent quantity and the aspects such as intermittent type deslagging of adaptation start stop operation have remarkable superiority.
And modification melting section has solved the difficult problem stirring, realized mixing and further concurrent heating intensification under flue gas effect of modification agent and slag, this compares with other patent, utilized the insulation of glass melter and mixed feature, high-temp liquid natural flow process is mixed, clarification, overcome in traditional winding-up heat-processed large to slag disturbance, there is more impurity, bubble, the drawback that thermo-efficiency is low, make slag blending process more efficient, the slag iron sepn process of reduction slag is more thorough, upgrading slag quality significantly improves, the control of upgrading process is more effective.
Whirlwind heating zone forms by pushing up plug 1, burning vision slit 16, relief hole 15, primary air nozzle 3, overfiren air port 4, tertiary air orifice 5, whirlwind body of heater 27, turbofurnace 6.In whirlwind heating zone, arranging three pairs of air ports in a center of symmetry, by height, be respectively on earth primary air nozzle 3, overfiren air port 4, tertiary air orifice 5, at heating zone top, be provided with the top plug 1 that is back taper bench-type simultaneously, top plug 1 both sides symmetrical igniter burner 17 and relief hole 15, heating zone top plug central part is provided with burning vision slit 16.In the vertical, whirlwind body of heater 27 is designed to four sections of movable fractionation, and can adjust according to actual operation requirements height and the inlet number of whirlwind body of heater 27.
Modification melting section by upgrading chamber 24, Zha Tie separate chamber 25, deslagging chamber 26, pond, slope at the bottom of 9, the separated wall 12 of divider wall 8, slag iron, liquid flow hole 21, iron liquid outlet orifice 11, slag outlet orifice 10, charge cavity 22, thief hole 23, flue 13, stirring rake 7, concurrent heating burner 19, upgrading chamber vision slit 18, deslagging chamber's vision slit 20 form.
25 of upgrading Shi24He Zha iron separate chambers, be provided with divider wall 8 one, its top is higher than the design top of the slag 28, and keeps the distance of 20~50mm with roof of the furnace.Divider wall 8 minimum area profiles are approximate circle taper, and top rounding has liquid flow hole 21 in divider wall 8 middle and lower parts, liquid flow hole 21 first half semicirculars in shape, and Lower Half is rectangular; Divider wall 8 is for refractory material casting forms, and the position in stove can move forward and backward as required, to adjust the relative size of upgrading Shi24He Zha iron separate chamber 25.26 of Zha iron separate chamber 25He deslagging chamber are provided with the separated wall 12 of a ballast aggregate iron, and its profile is the rectangle of top rounding, and overhead height is than design slag face 28 low 20~30mm.
Zha iron separate chamber 25 1 side walls, also near the separated wall of slag iron 12 bottoms, offer the circular iron liquid outlet orifice 11 of diameter 10~30mm.At upgrading stove tail end side wall place, offer the circular slag outlet orifice 10 of diameter 15~40mm, slag outlet orifice 10 central axis same level faces are the angle of 3 °.25 tops, Zha iron separate chamber offer the circular thief hole 23 that a diameter is 50~150mm, and thief hole 23 central axis are perpendicular to horizontal plane.
At top, upgrading stove center, offering a cross-sectional diameter is the circular charge cavity 22 of 50~120mm, and charge cavity 22 central axis same level face angles are 30~70 °, and stretch to upgrading chamber 24.
At upgrading stove modification melting section middle part, be inserted with a stirring rake 7 that stretches to upgrading chamber 24, stirring rake 7 forms for high temperature steel and refractory materials produced with combination, stirring rake 7 centibar position same level faces keep 40~70 ° of angles, can be according to manipulation require, elongate or shorten the working length of stirring rake 7 in stove, even can from upgrading stove, take out.
In iron liquid outlet orifice 11 and slag outlet orifice 10 1 sides, bottom surface, modification melting section molten bath is the inclination of 1 °~7 °, simultaneously portion of bottom center higher than pond at the bottom of both sides.
At upgrading stove modification melting segment trailer, be provided with a cylindrical flue 13 in cross section, flue 13 is positioned at body of heater afterbody top, and internal layer is equipped with refractory materials.
On the furnace wall of deslagging chamber's 26 1 sides, be inserted with and stretch to Lu Nei deslagging chamber 26 concurrent heating burner 19 that can jet flames.Concurrent heating burner 19 not only can increase heat to the slag after upgrading, improves slag liquid mobility, and the inflammable gas of remnants in the flue gas that can also burnout, as carbon monoxide, methane, hydro carbons, hydrogen etc., increases fuel utilization efficiency, reduces topsoil.Concurrent heating burner 19 and igniter burner 17 can be used Sweet natural gas, liquefied petroleum gas (LPG), coal gas as fuel.
The online upgrading process of hot slag is: first modification agent, coal dust, air are blown in turbofurnace 6 from primary air nozzle 3, along turbofurnace 6 walls, move downward in the shape of a spiral, coal dust firing, modification agent are fused into modification agent liquation, and drop on the slag face in upgrading chamber 24 under the effect of the violent burning of coal dust simultaneously.Modification agent after melting reach a certain amount of after, upgrading furnace roof plug 1 is taken out, then by needing the hot slag of upgrading to pour in the upgrading chamber 24 in stove by top consent, under slag action of gravity, slag and modification agent are realized preliminary stirring.Wherein, part combustion air, as gas carrier, carries modification agent and coal dust and is blown in turbofurnace 6 by primary air nozzle 3, and other residue combustion air is blown into combusting coal fines in burner hearth from overfiren air port 4 and tertiary air orifice 5 respectively according to different ratios.The interior slag after upgrading reduction in upgrading chamber 24, from liquid flow hole 21, flow to Zha Tie separate chamber 25, until metal in the dreg iron liquid, assemble and be deposited to after certain hour, iron liquid outlet orifice 11 in metallic iron Ye Congzha iron separate chamber 25 is discharged and is delivered to steel-making and smelts, and remaining slag flows to deslagging chamber 26 through the separated wall of slag iron 12 tops, after running up to certain hour, deslagging chamber's 26 slag liquid discharge from slag outlet orifice 10.
If need to reduce ferriferous oxide in slag, by charge cavity 22, in mixed upgrading slag, add reductive agent, and under the effect of stirring rake 7, reductive agent is metallic iron liquid by the reduction of ferrous oxide in slag gradually, simultaneously stirring action has also promoted mutual fusion, homogenizing and the clarifying process of modification agent slag liquid with slag, and the tap a blast furnace gathering settling process of liquid of reduction in slag.
The upgrading slag liquid discharging out of the furnace is observed to its mobility, and utilize temperature measuring device to measure slag liquid temp, as bad in pomace liquid mobility and temperature is on the low side, utilize flame additional heat on the top of the slag in concurrent heating burner 19Xiang deslagging chamber 26.
Charge cavity 22 in melting heating zone and thief hole 23 block to prevent that with cylindrical stopple hot flue gas from emerging when not using, and iron liquid outlet orifice 11 and slag liquid outlet orifice 10 utilize amorphous refractory clay to block when not using, refractory materials just can be blocked duct by self sintering, to prevent the Self-discharged of iron liquid and slag liquid.
The utility model has the advantages that: the online upgrading of the hot slag of high temperature, not only the high-quality residual heat resources in slag can be converted into Chemical bond energy, improve UTILIZATION OF VESIDUAL HEAT IN efficiency, also can reduce the conventional machining treatment process of solid slag, reduce occupation of land space and the equipment attrition degree of waste residue treatment facility.The upgrading slag that the method goes out from upgrading fire grate can be made differing materials as required, as glass, pottery, devitrified glass, active mixed material, active admixture, slag wool, artificial marble, artificial cast stone, granolith etc.For the high slag of some remaining iron amounts, recyclable metallic iron liquid or the iron alloy of obtaining also, applicable raw materials scope is wide.
Accompanying drawing explanation
Fig. 1 is the front view of the utility model device
Fig. 2 is the A-A sectional view of Fig. 1
Fig. 3 is the B-B sectional view of Fig. 1
Fig. 4 is the C-C sectional view of Fig. 1
Attached number in the figure represents: 1, top plug, 2, upgrading body of heater, 3, primary air nozzle, 4, overfiren air port, 5, tertiary air orifice, 6, turbofurnace, 7, stirring rake, 8, divider wall, 9, at the bottom of pond, slope, 10, slag outlet orifice, 11, iron liquid outlet orifice, 12, the separated wall of slag iron, 13, flue, 14, handle, 15, relief hole, 16, burning vision slit, 17, igniter burner, 18, slag mixing vision slit, 19, concurrent heating burner, 20, deslagging vision slit, 21, liquid flow hole, 22, charge cavity, 23, thief hole, 24, upgrading chamber, 25, Zha Tie separate chamber, 26, deslagging chamber, 27, whirlwind body of heater, 28, design slag face.
Embodiment
Following examples are to further illustrate of the present utility model, but the utility model is not limited to this.
Embodiment 1:
Coal dust, ball milling is crossed 100 mesh standard sieves, particle diameter <0.15mm, ash oontent 14.08%.
In igniter burner 17 and concurrent heating burner 19, pass into liquefied petroleum gas (LPG) and air, light this gaseous mixture, the heat that burning produces is pre-thermal upgrading furnace interior space and refractory materials gradually.Treat that tertiary air section place temperature rises to 650~700 ℃ gradually, the interior temperature in upgrading chamber 24 rises to after 400~470 ℃ gradually, utilizes rotary feeder and air blast injection tube, by primary air nozzle 3, to coal injection in stove, and closes concurrent heating burner 19.Under the effect of igniter burner 17, the coal dust spraying in stove is lighted, and in upgrading stove, each regional temperature further raises.Control coal powder blowing amount is 50~70kg/h, and a wind blast volume is 380~440m 3/ h, after winding-up after a while burn and is reached and stablize, primary air nozzle 3 place's temperature can be stabilized in 1000~1100 ℃, tertiary air orifice 5 place's temperature can be stabilized in 1450~1550 ℃, upgrading chamber 24 temperature can be stabilized in 1460~1520 ℃, and near the thief hole 23 of shaft middle part, temperature can reach 1270~1320 ℃.Temperature in stove in region, molten bath all can reach 1350 ℃, the minimum temperature line of fusing upgrading slag.
Embodiment 2:
High-temperature slag: blast furnace slag, 1500 ℃ of temperature; Coal dust, ball milling is crossed 100 mesh standard sieves, particle diameter <0.15mm, ash oontent 14.08%.Modification agent, not ball milling screening, particle diameter <1mm.
In igniter burner 17 and concurrent heating burner 19, pass into liquefied petroleum gas (LPG) and air, light this gaseous mixture, the heat that burning produces is pre-thermal upgrading furnace interior space and refractory materials gradually.Treat that tertiary air section place temperature rises to 650~700 ℃ gradually, the interior temperature in upgrading chamber 24 rises to after 400~470 ℃ gradually, utilizes rotary feeder and air blast injection tube, by primary air nozzle 3, to coal injection in stove, and closes concurrent heating burner 19.Under the effect of igniter burner 17, the coal dust spraying in stove is lighted, and in upgrading stove, each regional temperature further raises.Treat that tertiary air section place temperature is warming up to more than 1450 ℃ gradually, the interior temperature in upgrading chamber 24 rises to 1350 ℃ when above gradually, stops to coal injection in stove.Now, remove top plug 1, by tipper, the high-temperature slag having melted is added in upgrading stove from top feeding mouth.Then by regulating feeding machine rotating speed, to adjust to coal injection and modification agent compound in stove, the material amount of compound is 80~120kg/h, blast volume is adjusted into 400~600m 3/ h, after winding-up burning after a while, tertiary air section temperature can remain on 1500~1550 ℃, and upgrading chamber 24 temperature can remain on 1450~1500 ℃.By shaft middle part charge cavity 22, utilize infrared high-temperature measurement instrument, recording top of the slag temperature in 24 molten baths, upgrading chamber is 1471 ℃, slag has all occurred melt and mix.To the melt cinder sampling in 24 molten baths, upgrading chamber, after cooling grinding, utilizing calcium oxide in fluorescence analyser fractions tested is 1.05 with the mass ratio of silicon-dioxide, reaches the requirement composition of design.Slag is directly discharged from iron liquid outlet orifice 11 or slag outlet orifice 10.
Embodiment 3
High-temperature slag: slag, 1600 ℃ of temperature; Coal dust, ball milling is crossed 100 mesh standard sieves, particle diameter <0.15mm, ash oontent 14.08%.Modification agent, not ball milling screening, particle diameter <1mm.
In igniter burner 17 and concurrent heating burner 19, pass into liquefied petroleum gas (LPG) and air, light this gaseous mixture, the heat that burning produces is pre-thermal upgrading furnace interior space and refractory materials gradually.Treat that tertiary air section place temperature rises to 650~700 ℃ gradually, the interior temperature in upgrading chamber 24 rises to after 400~470 ℃ gradually, utilizes rotary feeder and air blast injection tube, by primary air nozzle 3, to coal injection in stove, and closes concurrent heating burner 19.Under the effect of igniter burner 17, the coal dust spraying in stove is lighted, and in upgrading stove, each regional temperature further raises.Treat that tertiary air section place temperature is warming up to more than 1450 ℃ gradually, the interior temperature in upgrading chamber 24 rises to 1350 ℃ when above gradually, stops to coal injection in stove.Now, remove top plug 1, by tipper, the high-temperature slag having melted is added in upgrading stove from top feeding mouth.Then by regulating feeding machine rotating speed, to adjust to coal injection and modification agent compound in stove, the material amount of compound is 50~100kg/h, blast volume is adjusted into 220~500m 3/ h, after winding-up burning after a while, tertiary air section temperature can remain on 1550~1650 ℃, and upgrading chamber 24 temperature can remain on 1470~1550 ℃.Now, from shaft charging opening 22, add reductive agent coal dust, utilize slag in stirring rake 7 agitated pools.By shaft middle part charge cavity 22, utilize infrared high-temperature measurement instrument, recording top of the slag temperature in 24 molten baths, upgrading chamber is 1530 ℃, slag has all occurred melt and mix.To the melt cinder sampling in 24 molten baths, upgrading chamber, after cooling grinding, utilizing the mass ratio of calcium oxide and silicon-dioxide in fluorescence analyser fractions tested is 1.33, iron oxide content is less than 1%, meeting the requirements of design forms, metallic iron liquid is discharged from iron liquid outlet orifice 11, then slag is directly discharged from slag outlet orifice 10.

Claims (7)

1. the online modifying apparatus of hot slag, it is characterized in that: comprising: top plug (1), upgrading body of heater (2), primary air nozzle (3), overfiren air port (4), tertiary air orifice (5), turbofurnace (6), stirring rake (7), divider wall (8), at the bottom of pond, slope (9), slag outlet orifice (10), iron liquid outlet orifice (11), the separated wall (12) of slag iron, flue (13), handle (14), relief hole (15), burning vision slit (16), igniter burner (17), upgrading chamber vision slit (18), concurrent heating burner (19), deslagging chamber's vision slit (20), liquid flow hole (21), charge cavity (22), thief hole (23), upgrading chamber (24), Zha Tie separate chamber (25), deslagging chamber (26), with whirlwind body of heater (27),
Wherein, top plug (1) both sides symmetrical igniter burner (17) and relief hole (15), plug (1) centre, top is provided with the vision slit (16) that burns;
Between He Zha iron separate chamber, upgrading chamber (24) (25), be provided with one divider wall (8), in divider wall (8) middle and lower part, have liquid flow hole (21);
Between Zha Tie separate chamber (25) and deslagging chamber (26), be provided with the separated wall of a ballast aggregate iron (12); Bottom Zha iron separate chamber (25) one sides the close separated wall of slag iron (12), offer the circular iron liquid outlet orifice (11) of diameter 10~30mm; Top, Zha iron separate chamber (25) offers a circular thief hole (23);
At modifying apparatus tail end side wall place, offer the circular slag outlet orifice (10) of diameter 15~40mm, slag outlet orifice (10) central axis same level face is the angle of 3 °;
At top, modifying apparatus center, offering a cross-sectional diameter is the circular charge cavity (22) of 50~120mm, and charge cavity (22) central axis same level face angle is 30 °~70 °, and stretches to upgrading chamber (24);
On the furnace wall of deslagging chamber's (26) one sides, be inserted with the concurrent heating burner (19) that stretches to Lu Nei deslagging chamber (26) and can spray concurrent heating flame.
2. the online modifying apparatus of a kind of hot slag according to claim 1, is characterized in that: the device for the online upgrading of hot slag is upgrading stove, and upgrading stove is comprised of whirlwind heating zone and modification melting section.
3. the online modifying apparatus of a kind of hot slag according to claim 1 and 2, is characterized in that: whirlwind heating zone is by pushing up plug (1), burning vision slit (16), relief hole (15), primary air nozzle (3), overfiren air port (4), tertiary air orifice (5), whirlwind body of heater (27), turbofurnace (6) formation;
Wherein, in whirlwind heating zone, arrange three pairs of air ports in a center of symmetry, by height, be respectively on earth primary air nozzle (3), overfiren air port (4), tertiary air orifice (5), at heating zone top, be provided with the top plug (1) that is back taper bench-type simultaneously;
In the vertical, whirlwind body of heater (27) is designed to four sections of movable fractionation, and can adjust according to actual operation requirements height and the inlet number of whirlwind body of heater (27).
4. the online modifying apparatus of a kind of hot slag according to claim 1 and 2, is characterized in that: modification melting section by upgrading chamber (24), Zha Tie separate chamber (25), deslagging chamber (26), pond, slope at the bottom of (9), divider wall (8), the separated wall (12) of slag iron, liquid flow hole (21), iron liquid outlet orifice (11), slag outlet orifice (10), charge cavity (22), thief hole (23), flue (13), stirring rake (7), concurrent heating burner (19), upgrading chamber vision slit (18), deslagging chamber's vision slit (20) form;
Wherein, divider wall (8) top is higher than the design top of the slag (28), and keeps the distance of 20~50mm with roof of the furnace; Divider wall (8) minimum area profile is approximate circle taper, top rounding;
Liquid flow hole (21) first half semicircular in shape, Lower Half is rectangular;
Separated wall (12) profile of slag iron is the rectangle of top rounding, and overhead height is lower than design slag face (28) 20~30mm;
Thief hole (23) diameter is 50~150mm, and central axis is perpendicular to horizontal plane.
5. the online modifying apparatus of a kind of hot slag according to claim 1 and 2, it is characterized in that: at upgrading stove modification melting section middle part, be inserted with a stirring rake (7) that stretches to upgrading chamber (24), stirring rake (7) centibar position same level face keeps 40~70 ° of angles, can be according to manipulation require, elongate or shorten the working length of stirring rake (7) in stove, even can from upgrading stove, take out;
In iron liquid outlet orifice (11) and slag outlet orifice (10) one sides, bottom surface, modification melting section molten bath is the inclination of 1 °~7 °, simultaneously portion of bottom center higher than pond at the bottom of both sides;
At upgrading stove modification melting segment trailer, be provided with a cylindrical flue in cross section (13), flue (13) is positioned at body of heater afterbody top, and internal layer is equipped with refractory materials.
6. the online modifying apparatus of a kind of hot slag according to claim 1, is characterized in that: concurrent heating burner (19) and igniter burner (17) can be used Sweet natural gas, liquefied petroleum gas (LPG), coal gas as fuel.
7. the online modifying apparatus of a kind of hot slag according to claim 1 and 2, it is characterized in that: the charge cavity in melting heating zone (22) and thief hole (23) are blocked with cylindrical stopple when not using, and iron liquid outlet orifice (11) and slag liquid outlet orifice (10) utilize amorphous refractory clay to block when not using.
CN201420096562.6U 2014-03-04 2014-03-04 Online quality modification device of hot state molten slag Withdrawn - After Issue CN203794916U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420096562.6U CN203794916U (en) 2014-03-04 2014-03-04 Online quality modification device of hot state molten slag

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420096562.6U CN203794916U (en) 2014-03-04 2014-03-04 Online quality modification device of hot state molten slag

Publications (1)

Publication Number Publication Date
CN203794916U true CN203794916U (en) 2014-08-27

Family

ID=51377149

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420096562.6U Withdrawn - After Issue CN203794916U (en) 2014-03-04 2014-03-04 Online quality modification device of hot state molten slag

Country Status (1)

Country Link
CN (1) CN203794916U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103834752A (en) * 2014-03-04 2014-06-04 北京科技大学 Thermal-state slag online modification device
CN105112576A (en) * 2015-09-17 2015-12-02 阳谷祥光铜业有限公司 Modification process and device for hot molten copper slag

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103834752A (en) * 2014-03-04 2014-06-04 北京科技大学 Thermal-state slag online modification device
CN103834752B (en) * 2014-03-04 2015-04-08 北京科技大学 Thermal-state slag online modification device
CN105112576A (en) * 2015-09-17 2015-12-02 阳谷祥光铜业有限公司 Modification process and device for hot molten copper slag

Similar Documents

Publication Publication Date Title
CN106191344B (en) A kind of method for mixing the production of slag melting and reducing and modifier treatment
CN101538631B (en) Process and device for smelting ferronickel and nickel-containing molten iron by using lower-nickel materials
CN106048109B (en) A kind of method for mixing the recycling of slag melting and reducing and modifier treatment
CN105838838B (en) A kind of method that coal gas direct-reduction one-step method produces clean steel
CN102159731B (en) Process for producing molten iron
CN101538629A (en) Process and device for smelting chromium irons and chromium-containing molten iron by using chromium ore powder
CN106048106A (en) Smelting reduction recovery and thermal refining method for rare-earth-niobium-containing slag mixture
CN103397129A (en) Smelting reduction ironmaking furnace and ironmaking technology thereof
CN203794916U (en) Online quality modification device of hot state molten slag
CN103834752B (en) Thermal-state slag online modification device
CN104357650B (en) A kind of bath smelting quickly makes molten bath method
CN102268502A (en) Spongy iron preparation method by smelting refractory iron ore (slag) with reduction rotary kiln
CN103353232B (en) Left wheel popup box type porous pull-down plug graphite water gap device of electromagnetic slag smelter
CN203478998U (en) Underflow type anti-swirl central stopper rod nozzle for electro-magnetic induction slag smelting furnace
CN103353234B (en) Bottom flowing type coaxial electric heating core graphite water gap device of electromagnetic induction slag smelting furnace
CN203550601U (en) Electro-magnetic induction slag smelting furnace bottom flow type vortex-preventing central stopper rod water gap lifting mechanism
CN103063030B (en) A kind of modified compound stove of slag and operating procedure thereof
CN109609717A (en) A kind of converter steel-smelting technique using porous oxygen lance
CN203478999U (en) Left-wheel elastic box type porous pull-down plug graphite nozzle device of electromagnetic slag smelting furnace
CN203550604U (en) Electro-magnetic induction slag smelting furnace bottom flow type flow-controllable electric heating graphite water gap device
CN104141019B (en) Modification method of iron-containing slag and special equipment for modification method
CN203479002U (en) Underflow type electro-magnetic induction graphite pipe launder for electro-magnetic induction slag smelting furnace
CN203479012U (en) Underflow type coaxial electric heating core graphite nozzle device for electro-magnetic induction slag smelting furnace
CN203478985U (en) Dynamic sealing device for suspended driven rotating furnace lid of electro-magnetic induction slag smelting furnace
CN203479013U (en) Structure for burying heater electrodes into electro-magnetic induction slag smelting furnace for slag smelting

Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
AV01 Patent right actively abandoned

Granted publication date: 20140827

Effective date of abandoning: 20150408

RGAV Abandon patent right to avoid regrant