CN205907311U - System for use multipurposely red mud - Google Patents
System for use multipurposely red mud Download PDFInfo
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- CN205907311U CN205907311U CN201620831586.0U CN201620831586U CN205907311U CN 205907311 U CN205907311 U CN 205907311U CN 201620831586 U CN201620831586 U CN 201620831586U CN 205907311 U CN205907311 U CN 205907311U
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Abstract
The utility model discloses a system for use multipurposely red mud, include: mixed forming equipment, drying equipment, rotary hearth furnace and melting furnace, wherein, mixed forming equipment has red mud entry, reductant entry, flux entry and the export of material pelletizing, drying equipment has material pelletizing entry and the export of dry material pelletizing, and material pelletizing entry links to each other with the export of material pelletizing, the rotary hearth furnace has dry material pelletizing entry and roasted product export, and dry material pelletizing entry links to each other with the export of dry material pelletizing, melting furnace has roasted product entry, hot metal export and melts the export of branch sediment, and the roasted product entry links to each other with the roasted product export, it links to each other with microcrystalline glass preparation system or mineral wool preparation system to melt the export of branch sediment. Utilize this system to handle the red mud effectively from this to melted the branch sediment at last and can regard as the raw materials that is rich in silicate and aluminate to be used for preparing mineral wool or microcrystalline glass, and then effectively improved the comprehensive application value of red mud.
Description
Technical field
The utility model belongs to field of solid waste treatment and in particular to comprehensively utilizing the system of red mud.
Background technology
Red mud, is that bauxite refines the discarded object producing in alumina process, because it is gained the name for crimson color mud.With
The continuous development of aluminum i ndustry, the annual 60000000 tons of red muds of output in the current whole world, the red mud discharge capacity of China is annual to be 4,500,000 tons
More than.Most of alumina producers are to pile up red mud or be poured into deep-sea in the world.Substantial amounts of iron, aluminium, sodium, calcium is contained in red mud
On metal, storing up of red mud does not only take up substantial amounts of soil and farmland, expends more stockyard and builds and maintenance cost, causes tight
The water pollution of weight, and waste substantial amounts of metals resources.Contained valency metal component such as fe in red mud2o3、al2o3、na2o、
tio2, the mostly relatively low alkali metal of economic worth, individually recycling is carried out with regard to a certain element and can not solve technique well
Economy and the huge problem of red mud storage it is necessary to using various metals combined recovery technology could be real realize red mud
Comprehensive utilization and minimizing.Therefore, being effectively recycled into as people's growing interest of the comprehensive regulation of red mud and its metals resources
Focus.
Utility model content
The utility model is intended at least solve one of technical problem in correlation technique to a certain extent.For this reason, this reality
It is that proposing one kind has process is simple, is easy to large-scale production and can be easily obtained high value added product with a new purpose
The advantages of comprehensive utilization red mud system.
According to another aspect of the present utility model, the utility model also proposes a kind of system of comprehensive utilization red mud, and this is
System includes: mixed-forming equipment, described mixed-forming equipment has red mud entrance, reducing agent entrance, flux entrance and material
Pelletizing exports；Drying equipment, described drying equipment has material pelletizing entrance and the outlet of dried material pelletizing, described material pelletizing
Entrance is connected with the outlet of described material pelletizing；Rotary hearth furnace, described rotary hearth furnace has dried material pelletizing entrance and product of roasting goes out
Mouthful, described dried material pelletizing entrance is connected with the outlet of described dried material pelletizing；Molten point of stove, a described molten point stove has roasting to produce
Thing entrance, molten iron outlet and melting slag outlet, described product of roasting entrance is connected with the outlet of described product of roasting；Described melting slag
Outlet is connected with devitrified glass preparation system or mineral wool preparation system.
Thus utilize the system of the comprehensive utilization red mud of the utility model above-described embodiment, initially with mixed-forming equipment
Red mud and reducing agent, flux are carried out mixed-forming and obtains pellet group, and further material pelletizing is carried out in rotary hearth furnace
Direct-reduction is processed, and is re-fed into carrying out molten point in molten point of stove, and isolates molten iron and melting slag, finally melting slag is sent to crystallite
Glass preparation system or mineral wool preparation system are used for preparing devitrified glass or mineral wool.Therefore, above-mentioned using the utility model
The system of the comprehensive utilization red mud of embodiment can be processed to red mud effectively, improve metal iron recovery, and obtain
Melting slag can be directly used in and prepare devitrified glass or mineral wool, obtain height as the raw material rich in silicate and aluminate
The product of added value.Therefore, the system process using the comprehensive utilization red mud of the utility model above-described embodiment is simple, easily
In operation and large-scale production, the comprehensive utilization value of red mud can also be significantly improved simultaneously.
In addition, according to the utility model above-described embodiment comprehensive utilization red mud system can also have as follows add
Technical characteristic:
In the utility model, the system of the comprehensive utilization red mud of above-described embodiment further includes: heat pack, described heat
Tinning is connected with described rotary hearth furnace and a molten point stove respectively.
In the utility model, a described molten point stove is connected with low heat value coal gas preparation system.
In the utility model, described rotary hearth furnace is DRI regenerative rotary hearth furnace.
In the utility model, described mixed-forming equipment is pair roller type high-pressure ball press or disc balling machine.
Brief description
Fig. 1 is the structural representation of the system of the comprehensive utilization red mud according to one embodiment of the utility model.
Fig. 2 is the flow chart of the method for the comprehensive utilization red mud according to one embodiment of the utility model.
Fig. 3 is the flow chart of the method for the comprehensive utilization red mud according to another embodiment of the utility model.
Specific embodiment
Embodiment of the present utility model is described below in detail, the example of embodiment is shown in the drawings, wherein from start to finish
The element that same or similar label represents same or similar element or has same or like function.Below with reference to attached
The embodiment of figure description is exemplary it is intended to be used for explaining the utility model, and it is not intended that to limit of the present utility model
System.
According to one side of the present utility model, the utility model proposes a kind of system of comprehensive utilization red mud.Join below
Examine the system that Fig. 1 describes the comprehensive utilization red mud of the utility model specific embodiment in detail.
Comprehensively utilize the system of red mud and include according to specific embodiment of the utility model: mixed-forming equipment 10, do
Dry equipment 20, rotary hearth furnace 30 and molten point of stove 40.
According to specific embodiment of the utility model, mixed-forming equipment 10 have red mud entrance 11, reducing agent entrance 12,
Flux entrance 13 and material pelletizing outlet 14；Drying equipment has material pelletizing entrance 21 and dried material pelletizing outlet 22,
Material pelletizing entrance 21 is connected with material pelletizing outlet 14；Rotary hearth furnace has dried material pelletizing entrance 31 and product of roasting outlet
32, dried material pelletizing entrance 31 is connected with dried material pelletizing outlet 22；A molten point stove has product of roasting entrance 41, molten iron to go out
Mouth 42 and melting slag outlet 43, product of roasting entrance 41 is connected with product of roasting outlet 32；Melting slag outlet 43 and devitrified glass
Preparation system or mineral wool preparation system are connected.
According to specific embodiment of the utility model, the system using the comprehensive utilization red mud of above-described embodiment is entered to red mud
Row is processed, and specifically can carry out according to the following step:
First, red mud, reducing agent and flux are carried out at mixed-forming using mixed-forming equipment 10 using this system
Reason, is prepared material pelletizing, is further carried out material pelletizing except water process by drying equipment 20, be conducive to being done
Dry material pelletizing.Secondly, using rotary hearth furnace 30, direct-reduction process is carried out to dried material pelletizing, obtain product of roasting.Finally,
By product of roasting, directly heat is delivered to and is carried out molten office reason in molten point of stove, and obtains molten iron and melting slag.Melting slag is delivered to crystallite
Glass preparation system or mineral wool preparation system are used for preparing devitrified glass or mineral wool, and then realize the comprehensive utilization of red mud,
Realize maximally utilizing of resource.
Further included according to the system of the comprehensive utilization red mud in the utility model specific embodiment: heat pack, hot charging
Tank is connected with rotary hearth furnace and a molten point stove respectively.Product of roasting heat in rotary hearth furnace thus can be realized and deliver to molten point of stove, and then fully
Using the heat of rotary hearth furnace, reduce molten office reason energy consumption.
According to specific embodiment of the utility model, a molten point stove is connected with low heat value coal gas preparation system.Thus adopt
Low-calorie coal gas, as the fuel of molten point of stove, is made coal gas operation be combined with molten operation break-down, belongs to coal resources high level
Change using integrated with mineral resources comprehensive utilization.Molten point of stove energy consumption thus not only can be reduced, realize low calorific value coal system simultaneously
The making full use of of gas.
According to specific embodiment of the utility model, rotary hearth furnace can be DRI regenerative rotary hearth furnace.Thus, adopt
It is reduced directly with regenerative rotary hearth furnace, by heat-accumulating burner heat storage fully recovering waste heat, preheating obtains fine land productivity
With.Compare tunnel cave and rotary kiln for directly reducing more saves energy consumption.According to specific example of the present utility model, using heat accumulating type
Rotary hearth furnace carries out direct-reduction process, and the degree of metalization of the product of roasting obtaining can reach more than 85%, thus can enter one
Step improves iron recovery in red mud, improves the comprehensive utilization value of red mud.
According to specific embodiment of the utility model, mixed-forming equipment is pair roller type high-pressure ball press or disk pelletizing
Machine.Shaping efficiency thus can be improved further.
According to specific embodiment of the utility model, the beneficial effect of the method for comprehensive utilization red mud of above-described embodiment is same
Sample is applied to the system of the comprehensive utilization red mud of the utility model specific embodiment.For example, according to concrete reality of the present utility model
Apply example, red mud can be mixed with complex reducing agent using mixed-forming equipment 10, wherein complex reducing agent can be cigarette
The combination in mass ratio for 1:1 of coal and living beings, or the combination in mass ratio for 1:1 of bituminous coal and petroleum coke, or bituminous coal, living beings
It is the combination of 1:1:1 in mass ratio with petroleum coke.The preferable coal of reproducibility and another kind of or several reduction are adopted by this inventor
Property poor reducing agent be combined using, and then in direct reduction reactor, reactivity preferably bituminous coal plays reduction first
Effect, and the coal of reactivity difference, such as living beings, petroleum coke are then in the last of direct reduction reactor or in follow-up molten office
Play a role during reason.Thus can effectively reducing the scaling loss of carbon, thus reducing the consumption of reducing agent, reducing production cost,
There is significant economic benefit.In addition, inventor finds, bituminous coal and living beings are in mass ratio the combination of 1:1, or by bituminous coal
It is the combination of 1:1 in mass ratio with petroleum coke, or bituminous coal, living beings and petroleum coke are the combination of 1:1:1 in mass ratio, segmentation
The effect playing reduction is more preferable, can also reduce reducing agent consumption simultaneously, is more beneficial for reducing production cost, improves economical
Benefit.
Understand the system of the comprehensive utilization red mud of the utility model above-described embodiment for convenience, below to using this system
The method of comprehensive utilization red mud is described.
The method includes: using mixed-forming equipment, red mud, reducing agent, flux are carried out mixed-forming process, so that
Obtain material pelletizing；Using drying equipment, material pelletizing is dried process, to obtain dried material pelletizing；By dried object
Pellet group carries out direct-reduction process in rotary hearth furnace, to obtain product of roasting；Product of roasting heat is delivered in molten point of stove simultaneously
Carry out molten office reason, to obtain molten iron and melting slag；And melting slag is delivered to devitrified glass preparation system or mineral wool system
Standby system is used for preparing devitrified glass or mineral wool.
By this utility model, red mud is mixed after material pelletizing with reducing agent and flux, first in rotary hearth furnace
It is reduced directly, then is managed melting in point stove and carrying out molten office, the molten melting slag divided after carrying iron is as rich in silicate and aluminium
The raw material of hydrochlorate, is used for preparing the high value added products such as mineral wool and devitrified glass.The synthesis of red mud thus can be improved further
Value.The method that the utility model comprehensively utilizes red mud, process is simple is it is easy to operation, it is easy to large-scale production, has notable
Actual application prospect.
At present, also do not have and carry iron using what rotary hearth furnace coal-based direct reduction-molten point stove melted that office manages red mud, and divided with molten
Slag prepares a kind of report rich in silicate and the raw material of aluminate.The utility model is attempted using rotary hearth furnace coal base directly also
Former-molten point stove melts office reason red mud, have effectively achieved direct-reduction and the molten office reason of red mud, obtains molten iron and molten point
Slag.And utilize this raw material rich in silicate and aluminate of melting slag further, to prepare mineral wool and devitrified glass is contour
Value-added product, and then achieve the comprehensive utilization of red mud and maximally utilizing of resource.
Devitrified glass is the polycrystalline solids being obtained by the controlling crystallizing of glass, and in devitrified glass, crystalline phase is all from one
Grown by crystalline phase in individual uniform glass phase and produce devitrified glass, major part is crystal, and glass is then indefiniteness or non-
Crystalline state.
Mineral wool is with industrial slag as primary raw material, and add with other materials through remelting, fibrillatable and make inorganic
Matter fiber, can be made into the various product such as plate, pipe, felt, has thermal insulation, insulation, fire prevention, anti-corrosion, humidity, sound absorption, antidetonation etc. many
Item function, is widely used in the fields such as building, industrial equipment and the vehicles, such as building exterior wall heat preserving, interior wall fire-proof sound insulation, industry
Kiln and pipe insulation, ship are heat-insulated etc., are a kind of heat-insulation materials of high-quality.Mineral wool mainly comprises sio2、al2o3、cao、
The compositions such as mgo, just similar with the chemical composition of red mud, therefore by red mud carry out preparing after certain process mineral wool have feasible
Property.
Research shows, fe2o3Containing relatively low melt, as its mk(mkRepresent the sio wherein containing2+al2o3To cao+mgo it
Mass ratio, that is,) be when 1.2 about its optimal become fine temperature under have wide and stable range of viscosities, and
And if feo comparision contents are high in melt, the mobility of mineral wool fiber and fiber slag-containing rate can be affected.Thus, according to this reality
With new specific embodiment, red mud is carried out proposing iron process first, reduce the fe in red mud2o3With feo content, then will pass through
Process the preparation that the relatively low red mud of the iron content obtaining carries out mineral wool, the comprehensive utilization of red mud can be effectively realized.
According to specific embodiment of the utility model, describe the utility model specific embodiment in detail below with reference to Fig. 2-3
Comprehensive utilization red mud method.
S100: mixed-forming is processed
According to specific embodiment of the utility model, first with mixed-forming equipment, red mud, reducing agent, flux are entered
Row mixed-forming is processed, to obtain material pelletizing.Thus it is easy to subsequently red mud be carried out with direct-reduction process, improve red mud also
Former efficiency.In advance flux and red mud are carried out mixed-forming simultaneously, can be in order to after subsequently directly to direct-reduction process
Product of roasting directly carries out molten office reason, and then improves the efficiency of comprehensive utilization red mud.
According to specific embodiment of the utility model, by red mud, reducing agent and flux according to red mud 70-90 weight portion,
Reducing agent 15-20 weight portion and flux 5-10 weight portion carry out mixed-forming process.Thus can improve further directly also
Former efficiency and molten component efficiency.
According to specific embodiment of the utility model, the reducing agent of above-mentioned employing can for bituminous coal and living beings in mass ratio
Combination for 1:1, or bituminous coal and petroleum coke be the combination of 1:1 in mass ratio, or bituminous coal, living beings and petroleum coke be in mass ratio
The combination of 1:1:1.Carried out using the poor reducing agent of the preferable coal of reproducibility and another kind of or several reproducibility by this inventor
It is applied in combination, and then in direct reduction reactor, reactivity preferably bituminous coal plays reduction first, and what reactivity differed from
Coal, such as living beings, petroleum coke then play a role in the last of direct reduction reactor or in follow-up molten office reason.Thus
The scaling loss of carbon can effectively being reduced, thus reducing the consumption of reducing agent, reducing production cost, there is significantly economic effect
Benefit.In addition, inventor finds, bituminous coal and living beings are in mass ratio the combination of 1:1, or by bituminous coal and petroleum coke in mass ratio
Combination for 1:1, or the combination in mass ratio for 1:1:1 by bituminous coal, living beings and petroleum coke, segmentation plays the effect of reduction more
Plus preferable, and then be more beneficial for reducing production cost, increase economic efficiency.
According to specific embodiment of the utility model, the iron-holder in usual red mud is 25-40 weight %.By using this
The method of the comprehensive utilization red mud of utility model above-described embodiment carries out direct-reduction process to red mud, the product of roasting obtaining
Degree of metalization can reach more than 85%.
According to specific embodiment of the utility model, flux can be in quick lime, lime stone, calcium carbonate and dolomite
At least one.Thus can further improve molten component efficiency, improve metal iron recovery.In addition, also may be used using above-mentioned flux
To improve metal iron recovery further, reduce iron content in melting slag so that the melting slag energy satisfaction that obtains prepare mineral wool or
The quality requirement of person's devitrified glass.According to specific example of the present utility model, contain by the melting slag obtaining of said method
There are tfe 3-6 weight %, cao 5-25 weight %, mgo 2-15 weight %, sio220-45 weight %, al2o320-40 weight
Amount %.This melting slag can be used for preparing mineral wool or devitrified glass as the raw material rich in silicate or aluminate, and then
Improve the comprehensive utilization value of red mud.
According to specific embodiment of the utility model, mixed-forming processes and can adopt pair roller type high-pressure ball press or disk
Pelletizer is carried out.Shaping efficiency thus can be improved further.
S200: dried process
According to specific embodiment of the utility model, using drying equipment, material pelletizing is dried process, so that
To dried material pelletizing.Thus material pelletizing is dried process, obtain dried material pelletizing to be conducive to removing red mud
The moisture of middle residual, obtains red mud pelletizing is dried, and then is conducive to follow-up direct-reduction to process, and improves reduction efficiency.
S300: direct-reduction is processed
According to specific embodiment of the utility model, dried material pelletizing is carried out direct-reduction process in rotary hearth furnace,
To obtain product of roasting.Thus dried material pelletizing is carried out direct-reduction process in rotary hearth furnace, can improve further
Red mud reduction efficiency.
According to specific embodiment of the utility model, it is to enter at a temperature of 1100-1200 degree Celsius that direct-reduction is processed
Row 40-50 minute and complete.Thus so that red mud is fully reduced, improve the degree of metalization of product of roasting.According to
The method of the comprehensive utilization red mud of the utility model specific embodiment, the degree of metalization of the product of roasting that direct-reduction process obtains
More than 85%, thus can improve iron recovery in red mud further, reduce in the melting slag obtaining after subsequently melting office reason
Iron content, and then make melting slag disclosure satisfy that the quality requirement preparing mineral wool or devitrified glass, and then improve red mud
Comprehensive utilization value.
S400: molten office reason
According to specific embodiment of the utility model, product of roasting heat is delivered in molten point of stove and carries out molten office reason, with
Just molten iron and melting slag are obtained；And be used for preparing devitrified glass or mineral wool by melting slag.Thus product of roasting heat is delivered to
In molten point of stove, molten office reason energy consumption can be saved further.
According to specific embodiment of the utility model, the above-mentioned flux adding in red mud mixed-forming in advance can enter
One step improves molten point for the treatment of effeciency.And by being to help using at least one in quick lime, lime stone, calcium carbonate and dolomite
Flux.Can further improve molten component efficiency, improve metal iron recovery.In addition, can also be carried further using above-mentioned flux
The quality of high melting slag.Tfe 3-6 weight %, cao 5-25 weight %, mgo 2-15 weight is contained in melting slag obtained from entering
Amount %, sio220-45 weight %, al2o320-40 weight %.This melting slag can be used as rich in silicate or aluminate
Raw material is used for preparing mineral wool or devitrified glass, and then improves the comprehensive utilization value of red mud.
According to specific embodiment of the utility model, the temperature of molten office reason can be 1400-1500 degree Celsius, and the time is
60-120 minute.Molten component efficiency and metal iron recovery thus can be improved further.
Embodiment 1
By the red mud of somewhere iron content 25.92%, according to red mud: reducing agent: after the ratio mixing of lime stone=60:22:18
Carry out pressure ball, wherein reducing agent is the mixture that bituminous coal and living beings press 1:1 composition.The pelletizing of drying is distributed in rotary hearth furnace and adds
To 1100 DEG C～1200 DEG C, after being incubated 40 minutes, product of roasting degree of metalization reaches more than 85% to heat, discharges roasting from rotary hearth furnace
Product is made the molten of fuel through heat pack feeding and divides a stove to carry out molten point with coal gas, melts point 1400～1500 DEG C of a furnace temperature, molten point
60 minutes time can get molten iron and melting slag.Molten iron iron content 96.28%, the rate of recovery of iron is 92.70%, the composition of melting slag
For tfe 3.63%, cao 8.19%, mgo 14.55%, sio223.45%, al2o338.48%.Using melting slag as former
Material feeds mineral wool preparation system and produces mineral wool.Mineral wool preparation system refers to one kind disclosed in patent cn104529147a and utilizes smelting
The method that golden stove high-temperature liquid state castaway slag produces mineral wool fiber for raw material.
Embodiment 2
By the red mud of somewhere iron content 30.65%, according to red mud: reducing agent: after the ratio mixing of lime stone=75:15:10
Carry out pressure ball, wherein reducing agent is the mixture that bituminous coal and petroleum coke press 1:1 composition.The pelletizing of drying is distributed into rotary hearth furnace heating
To 1100 DEG C～1200 DEG C, after being incubated 43 minutes, product of roasting degree of metalization reaches more than 85%, discharges roasting from rotary hearth furnace and produces
The molten point stove that thing makees fuel through heat pack feeding with coal gas carries out molten point, melts point 1400～1500 DEG C of a furnace temperature, molten timesharing
Between can get molten iron and melting slag within 60 minutes.Molten iron iron content 97.62%, the rate of recovery of iron is 93.60%, the consisting of of melting slag
Tfe 5.24%, cao 18.29%, mgo 3.53%, sio231.34%, al2o326.98%.Using melting slag as raw material
Feed mineral wool preparation system and produce mineral wool.Mineral wool preparation system refers to one kind disclosed in patent cn104529147a using metallurgical
The method that stove high-temperature liquid state castaway slag produces mineral wool fiber for raw material.
Embodiment 3
By the red mud of somewhere iron content 35.92%, according to red mud: reducing agent: the ratio mixing of quick lime=80:15:5 is laggard
Row pelletizing, wherein reducing agent are the mixture that bituminous coal, living beings and petroleum coke press 1:1:1 composition.Pelletizing after drying is distributed into
Rotary hearth furnace is heated to 1100 DEG C～1200 DEG C, and after being incubated 47 minutes, product of roasting degree of metalization reaches more than 85%, from rotary hearth furnace
The molten point of stove that the product of roasting discharged makees fuel through heat pack feeding with coal gas carries out molten point, melt point furnace temperature 1400～
1500 DEG C, can get molten iron and melting slag within 120 minutes between molten timesharing.Molten iron iron content 98.02%, the rate of recovery of iron is 90.47%.
The composition that consists of of melting slag is tfe 3.38%, cao 22.42%, mgo 7.71%, sio235.89%,
al2o320.54%.Using melting slag as raw material pass through moulding by casting, be cooled to room temperature send into crystallization furnace in by annealing, coring,
Crystallization process flow manufacturing goes out qualified devitrified glass.
In description of the present utility model it is to be understood that term " " center ", " longitudinal ", " horizontal ", " length ", " width
Degree ", " thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward ", " suitable
The orientation of instruction such as hour hands ", " counterclockwise ", " axial ", " radially ", " circumferential " or position relationship are based on orientation shown in the drawings
Or position relationship, be for only for ease of description the utility model and simplify description, rather than instruction or hint indication device or
Element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to limit of the present utility model
System.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or hint relative importance
Or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include one or more this feature.In description of the present utility model, " multiple " are meant that two or two
More than, unless otherwise expressly limited specifically.
In the utility model, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection ", " Gu
Fixed " etc. term should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integral；Can be
It is mechanically connected or electrically connect；Can be to be joined directly together it is also possible to be indirectly connected to by intermediary, can be two
The connection of element internal or the interaction relationship of two elements.For the ordinary skill in the art, can basis
Concrete condition understands concrete meaning in the utility model for the above-mentioned term.
In the utility model, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score
Can be the first and second feature directly contacts, or the first and second features pass through intermediary mediate contact.And, first is special
Levy second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only
Represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " permissible
Be fisrt feature immediately below second feature or obliquely downward, or be merely representative of fisrt feature level height and be less than second feature.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy describing with reference to this embodiment or example
Point is contained at least one embodiment of the present utility model or example.In this manual, the schematic table to above-mentioned term
State that be not necessarily referring to is identical embodiment or example.And, the specific features of description, structure, material or feature can be
Combine in an appropriate manner in any one or more embodiments or example.Additionally, in the case of not conflicting, this area
The feature of the different embodiments described in this specification or example and different embodiment or example can be carried out by technical staff
In conjunction with and combination.
Although of the present utility model embodiment has been shown and described above it is to be understood that above-described embodiment is
Exemplary it is impossible to be interpreted as that those of ordinary skill in the art is in scope of the present utility model to restriction of the present utility model
Interior above-described embodiment can be changed, change, replacing and modification.
Claims (5)
1. a kind of system of comprehensive utilization red mud is it is characterised in that include:
Mixed-forming equipment, described mixed-forming equipment has red mud entrance, reducing agent entrance, flux entrance and material pelletizing
Outlet；
Drying equipment, described drying equipment has material pelletizing entrance and the outlet of dried material pelletizing, described material pelletizing entrance
It is connected with the outlet of described material pelletizing；
Rotary hearth furnace, described rotary hearth furnace has dried material pelletizing entrance and product of roasting outlet, described dried material pelletizing entrance
It is connected with the outlet of described dried material pelletizing；
A molten point of stove, a described molten point stove has product of roasting entrance, molten iron outlet and a melting slag outlet, described product of roasting entrance with
Described product of roasting outlet is connected；
Described melting slag outlet is connected with devitrified glass preparation system or mineral wool preparation system.
2. the system of comprehensive utilization red mud according to claim 1 is it is characterised in that further include:
Heat pack, described heat pack is connected with described rotary hearth furnace and a molten point stove respectively.
3. the system of comprehensive utilization red mud according to claim 1 is it is characterised in that described melt point stove and low calorific value coal system
Gas preparation system is connected.
4. the system of comprehensive utilization red mud according to claim 1 is it is characterised in that described rotary hearth furnace is DRI
Regenerative rotary hearth furnace.
5. the system of comprehensive utilization red mud according to claim 1 is it is characterised in that described mixed-forming equipment is to roller
Formula high-pressure ball press or disc balling machine.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620831586.0U CN205907311U (en) | 2016-08-01 | 2016-08-01 | System for use multipurposely red mud |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110172539A (en) * | 2019-06-19 | 2019-08-27 | 上海科麟沃环境科技有限公司 | Iron content red mud recovery method, rock wool preparation method and corresponding rock wool |
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2016
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110172539A (en) * | 2019-06-19 | 2019-08-27 | 上海科麟沃环境科技有限公司 | Iron content red mud recovery method, rock wool preparation method and corresponding rock wool |
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