CN202030665U - Water supply device for slaking sintering quicklime and slaking system - Google Patents
Water supply device for slaking sintering quicklime and slaking system Download PDFInfo
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- CN202030665U CN202030665U CN201120083761XU CN201120083761U CN202030665U CN 202030665 U CN202030665 U CN 202030665U CN 201120083761X U CN201120083761X U CN 201120083761XU CN 201120083761 U CN201120083761 U CN 201120083761U CN 202030665 U CN202030665 U CN 202030665U
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Abstract
The utility model provides a water supply device for slaking sintering quicklime. The device comprises a water storage tank (1), wherein one end of the water storage tank (1) is provided with a water inlet pipe (3) for cold water to flow in and a steam pipe (2) for steam to flow in, and the other end of the water storage tank is provided with a water outlet pipe (4); after the cold water which flows in from the water inlet pipe (3) is contacted with the steam which flows in from the steam pipe (2), the cold water starts to be heated; the cold water and the steam are uniformly mixed in the water storage tank (1) to form hot water; and after flowing out from the water outlet pipe (4), the hot water is directly provided for the quicklime to perform slaking reaction. In the water supply device, the quicklime is fully slaked by using afterheat steam produced by a sintering production system, so that production is increased and energy conservation effects are exerted.
Description
Technical field
The Digestive tract that the utility model relates to a kind of water supply installation of sintering quicklime slaking and comprises this water supply installation.
Background technology
SINTERING PRODUCTION technology is the production line that comprises a plurality of sub-production technique, through batching → batch mixing →, thereby finish the production of whole agglomerate at the high-temperature ignition of cloth on the sinter machine → on sinter machine, exhausting negative pressure sintering → hot agglomerate cooling → agglomerate screening → finished product agglomerate belt conveying.The quicklime slaking process is the part of proportioning process wherein, and so-called batching promptly according to the charger sheet of Theoretical Calculation, is made into compound in proportion with the various powdered iron ore, flux, fine particle solid fuel of containing.Pass through mixing procedure and distributing technique then, and high-temperature ignition, exhausting negative pressure sintering.By solid-fuelled burning heating iron charge of fine granularity and flux, after a series of complex chemical reactions, produce the low melting point liquid phase, make iron charge under the condition of not exclusively fusing, sinter piece into and granulate, form the sinter mixture of good air permeability.
Flux shared ratio in compound is very little, but effect is very big.Granulate and sintering process for strengthening, unslaked lime commonly used at present or slaked lime are as flux.Sintering research both domestic and external all proves with production practice, can add certain amount of calcined lime or slaked lime in sintering process, particularly can add unslaked lime, can emit heat when unslaked lime and water carry out digestion reaction, thus the heat-agglomerating iron charge.Use unslaked lime can receive tangible economical effectiveness, the raising of agglomerate output, quality improvement, burnup are reduced as the flux of SINTERING PRODUCTION.
Unslaked lime need carry out digestion reaction with water in digestion facility, be mixed into sinter mixture with sintering iron charge and fine granularity solid fuel then.And the unslaked lime granularity is crossed thick or the digestion water temperature is low excessively, all can cause unslaked lime to digest in digestion facility not exclusively.The unslaked lime granularity can be controlled by quality examination, and still, practical condition proves, even the unslaked lime granularity meets into factory's quality inspection standard, can not guarantee that unslaked lime can fully digest in digestion facility.Especially in the winter of cold weather, the insufficient problem of quicklime slaking is more outstanding.
Cause occurring following problem and quicklime slaking is insufficient:
The first, for the mixing and the buffering equipment of compound: because unslaked lime digest in digestion facility not exclusively, thereby after being transported to mixing machine, need in mixing equipment (comprise mix cylinder, two mix cylinders) and blending bun, continuation digest.In digestive process, be accompanied by the explosion and the expansion of quicklime particles; make original loose compound be bonded to piece; mix cylinder one; knot is thick more more in two mixed cylinders and the blending bun; knot is big more more; occupy one gradually and mix cylinder; two mix the space in cylinder and the compound feed bin; the space that allows to reserve is more and more littler; even batch mixing cylinder and blending bun blocked; cause to send compound; make the function of batch mixing cylinder forfeiture batch mixing; blending bun forfeiture storing buffered function; so not only destroy pellet; also make the ordinary production of sintering process all can't keep; can only shut down cleaning one and mix cylinder; two mix the buildup in cylinder and the compound feed bin; if the mode that adopts the staff to enter batch mixing cylinder and blending bun is cleared up it; work under bad environment not only then, the labour intensity height, and also safety does not ensure yet.
The second, for SINTERING PRODUCTION technology: after pellet is destroyed, worsened bed permeability, can only keep thin bed of material sintering, can't embody the equipment advantage of deep-bed sintering; Simultaneously, because thin bed of material agglomerating auto accumulation heat ability has to improve sintering fuel consumption.Cause FeO height, reducing property in the agglomerate poor thus.
The 3rd, for the norm quota of consumption and agglomerate chemical ingredients: the unslaked lime consumption of Theoretical Calculation and actual amount differs greatly and the sinter basicity fluctuation is bigger.Mainly be that unslaked lime does not have abundant mineralising, part is the free oxidation calcium form and exists in the finished product agglomerate, make in the agglomerate the calcium oxide skewness and form white point.Not only the actual amount of unslaked lime increases, and makes the sinter basicity fluctuation.This mainly is because the incomplete residue of quicklime slaking is entrained in the finished product agglomerate with the white point form, and the existence of white point has influenced the representativeness of agglomerate sampling and chemical ingredients.
The 4th, to the negative impact of finished product agglomerate: white point subsequently in transit if run into steam (for example overcast and rainy being exposed to rain), will produce the digestion reaction of unslaked lime, promptly produce CaO+H
2O=Ca (OH)
2Reaction, generate slaked lime, agglomerate can be therefore and efflorescence produces a large amount of powder, this influence that finished product sinter strength and grade are formed is disadvantageous.Even without running into steam, the agglomerate that has white point enters blast furnace the most at last, such sinter strength is poor, after blast furnace has been used such agglomerate, be equivalent to unslaked lime has been added blast furnace, reduced the blast furnace raw material quality, and because the powder of fine particle agglomerate is many, reduce the ventilation property of blast furnace top lump zone, thereby influenced the smooth operation of furnace degree.Meanwhile, the material screening under the blast furnace groove also can screen out in a large number and return mine, and makes that the sinter return fine amount is big, returning mine is difficult to balance, causes sintering twice, has improved sintering fuel consumption.
This shows that original to add unslaked lime in sintering process be the important means of intensified-sintered production, and because the quicklime slaking process is insufficient, not only do not have volume increase, energy-conserving action, return sintering and blast furnace production brings a series of problems.
Currently used quicklime slaking equipment is the typing finished product, produce by specialized factory, but in the SINTERING PRODUCTION of domestic many iron and steel enterprises in various degree have an incomplete problem of quicklime slaking.In order to improve quicklime slaking efficient, the producer that has selects the quicklime slaking equipment of bigger model for use, so that prolong the digestion time of unslaked lime, perhaps on proportioning belt, sprinkle water, and the auxiliary improvement quicklime slaking, but effect is not very good.
The utility model content
Technical problem to be solved in the utility model is at above shortcomings in the quicklime slaking process in the prior art, a kind of water supply installation and the Digestive tract that comprises this water supply installation of sintering quicklime slaking are provided, to improve the digestive efficiency of unslaked lime, solve the inadequate problem of digestion that unslaked lime occurs in digestion reaction.
Because a series of problems that produced in the sintering process all are to produce owing to quicklime slaking is insufficient, and digestion facility is a standardized product, and the digestion time of digestion facility had only about 2 minutes, and it was also had only about 2 minutes from the time that digestion facility is transported to the follow-up mixing equipment, how in 4 fens short clock times unslaked lime can being digested fully to be needs the key issue that solves.The inventor finds, in the process of unslaked lime generation digestion reaction, improves the temperature of reaction water, is the effective means that shortens digestion time, improves digestive efficiency.For this reason, the inventor has carried out following test, and concrete testing program is: take by weighing unslaked lime 2kg and water 5kg at every turn, mix under different water temperatures, the highest water temperature, used time of digestion and digestive conditions in the record digestive process.Table 1 carries out the digestion time and the highest water temperature of digestion reaction for unslaked lime under different water temperature conditions:
Table 1
| Water temperature (℃) | Digestion time (min) | The highest water temperature of digestive process (℃) |
| 25 | 37 | 46 |
| 35 | 16 | 57 |
| 45 | 8 | 70 |
| 55 | 6 | 75 |
| 65 | 4.5 | 90 |
| 75 | 4 | 100 |
Test shows that digestion reaction carries out very slowly when water temperature is low, the bubble that emits seldom, very little; Along with the rising of water temperature, digestion reaction is accelerated gradually, and the bubble that emits is become heavy gradually; When water temperature reaches 75 ℃, produce vigorous reaction, be the boiling shape.Can draw by test-results, after the water temperature that is used for assimilation of quicklime using improved, the digestion time of the reaction generation slaked lime of unslaked lime and water shortened significantly, and speed is fast more, and then digestive efficiency is high more.As seen, in the process of unslaked lime generation digestion reaction, the temperature of the water that reacts with unslaked lime is the effective means that shortens digestion time, improves digestive efficiency.
Thereby, the technical scheme that solution the utility model technical problem is adopted provides a kind of water supply installation of sintering quicklime slaking, comprise water tank, an end of described water tank is provided with the water inlet pipe of cooling water inflow and the vapour pipe that flows into for steam, and its other end is provided with rising pipe.
By above-mentioned water supply installation is provided, the cold water that originally directly enters digestion facility afterheat steam first and in the sintering system can be mixed, to realize heating to cold water, and steam and cold water fully form hot water behind the mixing in water tank, the water temperature of formed hot water remains on unslaked lime is fully carried out in the temperature range of digestion reaction, and the hot water behind the mixing flows out to digestion facility by rising pipe.Increased the water tank of hot water can be provided after, make digestion facility Central Plains cause cold water assimilation of quicklime using become the hot water assimilation of quicklime using, can shorten digestion time, the raising digestive efficiency of unslaked lime effectively, solve because the insufficient a series of problems brought to SINTERING PRODUCTION of quicklime slaking.
In the technical program, what be communicated with the water inlet pipe of water tank is the inlet channel that has now in the digestion facility, vapour pipe then connects from existing sintering system agglomerate heat recovery boiler total pipeline comes, rising pipe then is equivalent to the water inlet pipe in the existing digestion facility, is connected directly to digestion facility.
Described vapour pipe is connected on the water inlet pipe.Preferably, the angle between vapour pipe and the water inlet pipe is 10 °～45 °.In fact, the angle of vapour pipe and water inlet pipe is big more, steam is big more to the resistance of water inlet, therefore the angle between vapour pipe and the water inlet pipe is the smaller the better, but consider from taking into account the angle that vapour pipe is connected the mixing effect of manufacture difficulty on the water inlet pipe and steam and cold water, angle between further preferred vapour pipe and the water inlet pipe is 30 °, thereby the afterheat steam that produces can effectively utilize hot agglomerate cooling the time heats the cold water that flows into from water inlet pipe.
Preferably, the vapor pressure in the described vapour pipe is greater than the intake pressure in the water inlet pipe, and the pressure difference between vapor pressure and the intake pressure is 50～100kPa, and keeps this pressure difference relatively stable.Make vapor pressure be slightly larger than intake pressure, so the flow velocity of the two is different, steam and cold water will produce turbulent phenomenon once contacting, and are enough to make both fully to contact.Under the dual function of convection current and conduction, steam and cold water are realized thermal exchange rapidly, and water temperature is raise rapidly.By such mode, the highlyest cold water in the water inlet pipe can be heated to 100 ℃, so the water temperature in the water tank can be as required regulated arbitrarily between normal temperature to 100 ℃.The water temperature of the hot water in the water tank preferably is controlled in 75～90 ℃ the scope, and such water temperature range can well satisfy unslaked lime and finish the needs of digestion at 2～4 minutes in the clock time, and further improves water temperature, and digestive efficiency there is no obvious raising.
Preferably, can be respectively equipped with the valve that can regulate discharge on described water inlet pipe and the rising pipe, can be provided with on the vapour pipe can the steam regulation flow valve.Such setting makes water tank, water inlet pipe, vapour pipe and rising pipe form a semitight space, can regulate discharge and steam flow as required in actual field production, thereby the hot water temperature can be regulated according to the situ production needs.In the described water tank, constantly have cold water and steam to flow into, cold water mixes the back with steam and forms hot water in water tank, and the temperature of hot water can be controlled in certain scope, satisfying the processing requirement that unslaked lime digests, and constantly there is hot water to flow out water tank from rising pipe.The process that hot water produces is hot water temperature's a dynamic control process, to realize water tank heat income and the running balance of paying.
Further preferably, the position near water inlet pipe is provided with the pressure measuring unit that is used for detecting water tank hydraulic pressure size on the described water tank.Because the pressure in the water tank is the heat hydraulic pressure, produce by cold water pressure and vapor pressure acting in conjunction, pressure measuring unit is set can monitors the working order of water tank better as pressurized vessel.Pressure measuring unit can adopt tensimeter, and the installation site of pressure measuring unit preferably is arranged on the head end or the middle part of water tank, the pressure of water tank is monitored guaranteeing.
Further preferably, be provided with the temperature measuring unit of the water temperature height that is used for detecting water tank on the described water tank near the position of rising pipe.Temperature measuring unit adopts thermopair, and the installation site of temperature measuring unit preferably is arranged on the middle part or the tail end of water tank, and the temperature value of being monitored to guarantee is the water temperature value behind cold water and the abundant mixing of steam.
Above-mentioned vapor pressure signal and hot water temperature's signal can be sent to monitoring unit in the existing system by data line, realize that promptly industrial computer shows and handles, and monitors and control the pressure and the water temperature of water supply installation in real time.
Preferably, also can be coated with lagging material on the outside surface of water tank.Described lagging material preferably adopts glass fibre cotton.Adopt the simple glass cellucotton to be based on following 2 considerations:
(1) satisfies service requirements and saving investment.Because the water tank surface temperature generally can not surpass 100 ℃,, can also save investment so the lagging material that coats on the water tank outside surface can satisfy the service requirements of insulation with the simple glass cellucotton.
(2) site safety production.Operator often will arrive spot inspection and regulate, and can touch the water tank that exposes, and cause the scald accident easily, can eliminate safe hidden trouble behind the outer coating of the water tank lagging material.
More preferably, this water supply installation can be monitored the quantity consumed of the water yield and steam in real time by increasing water flowmeter and steam meter.In addition, if the automatic improving in addition necessary to the utility model water supply installation just can realize that the full-automatic master control room of water temperature is controlled.But, if the relatively abundanter operator of experience are arranged, this above-mentioned cover water supply installation can satisfy present situ production arts demand.
A kind of Digestive tract that comprises the water supply installation of above-mentioned sintering quicklime slaking.
The utility model water supply installation working process is: when the cold water in the water inlet pipe with after steam in the vapour pipe contacts, according to turbulent principle in the hydromeehanics, do not need to rely on other special equipment, just can realize the thermal exchange of steam and cold water, cold water begins heat temperature raising, the heating back flows into water tank, and in water tank, continue heating and insulation, cold water is in the heat temperature raising process, in the water tank of semi closed, mix simultaneously, water temperature in the water tank is remained in 75 ℃～90 ℃ the processing requirement scope.Hot water behind the mixing flows out by the rising pipe that is positioned at the water tank the other end, directly supplies with the digestion that digestion facility is used for unslaked lime.In whole heat temperature raising process, the real-time detection data of intake pressure, vapor pressure, water temperature can be sent to industrial computer, accomplish real-time monitoring, in time regulate and control water temperature.
The utility model water supply installation is the part of quicklime slaking system, is to the improvement of original digestion facility and perfect, and effect is to provide stable, reliable hot water, and the digestion of unslaked lime is still finished by quicklime slaking equipment.Afterheat steam by utilizing SINTERING PRODUCTION system self to produce makes quicklime slaking abundant.
The beneficial effect that the utility model water supply installation is brought is:
1, reduced fuel consumption, improved bed permeability, also improved the oxygen gesture of the bed of material.Thereby promoted the generation of calcium ferrite, improved the intensity and the smelting performance of agglomerate.Make the effect of the intensified-sintered production of unslaked lime flux therefore give full play of, played volume increase, energy-conserving action.
2, blast furnace raw material improvement of terms promotes technical and economic requirements to improve.
Description of drawings
Fig. 1 is the structural representation of the water supply installation of the utility model sintering quicklime slaking.
Among the figure: 1-water tank, 2-vapour pipe, 3-water inlet pipe, 4-rising pipe, 5-tensimeter, 6-thermopair.
Embodiment
For making those skilled in the art understand the technical solution of the utility model better, the utility model is described in further detail below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, the water supply installation of sintering quicklime slaking comprises water tank 1, one end of water tank 1 is provided with the water inlet pipe 3 of cooling water inflow and the vapour pipe 2 that flows into for steam, and its other end is provided with rising pipe 4, and described rising pipe 4 can be communicated with the feed-water end in the digestion facility.In the present embodiment, water tank 1 is cylindric.
In the present embodiment, water inlet direction in steam flow in the vapour pipe 2 and the water inlet pipe 3 roughly the same (shown in the direction of arrow among Fig. 1), and be connected on the water inlet pipe, angle between vapour pipe and the water inlet pipe is 30 °, that is to say that vapour pipe 2 is welded on the water inlet pipe 3 with about 30 ° angle with water inlet pipe 3.
Wherein, the promptly original water source that carries out digestion reaction for unslaked lime, cold water source in the water inlet pipe 3,2 of vapour pipes are connected with existing sintering system agglomerate heat recovery boiler total pipeline, and the steam in the vapour pipe 2 comes from the afterheat steam that SINTERING PRODUCTION system self produces.Be respectively equipped with the valve that can regulate discharge on water inlet pipe 3 and the rising pipe 4, vapour pipe 2 be provided with can the steam regulation flow valve.In actual production, can be according to on-the-spot needs by regulating valve on the water inlet pipe 3 regulating flooding velocity, and the valve on the fit adjustment vapour pipe 2 is with the steam regulation flow, thus regulate the hot water temperature in water tank 1 and the rising pipe 4.Also can regulate the water flow of hot water by adjusting valve on the water pipe 4 according to on-the-spot needs.
In the present embodiment, be coated with lagging material on the outside surface of water tank 1, lagging material can keep good guarantee is provided to the water temperature in the water tank 1, and described lagging material can adopt glass fibre cotton.
On water tank 1, also be provided with the pressure measuring unit that is used for detecting water tank 1 hydraulic pressure size, water tank pressure is produced by heat hydraulic pressure, cold water pressure and vapor pressure acting in conjunction, pressure measuring unit is set can monitors the working order of water tank as pressurized vessel better.In the present embodiment, pressure measuring unit adopts tensimeter 5.The position that tensimeter 5 is provided with is can reflect better that the pressure stable situation is advisable in the water tank 1.As shown in Figure 1, tensimeter 5 is arranged on the position near water inlet pipe 3.
Also be provided with the water temperature temperature measuring unit just that is used for detecting water tank 1 on the described water tank 1.In the present embodiment, temperature measuring unit adopts thermopair 6.Be advisable can reflect the temperature regime in the water tank 1 better in the position that thermopair 6 is provided with.As shown in Figure 1, thermopair 6 is arranged on the position near rising pipe 4.Water temperature signal in the water tank 1 can be by after the temperature transmitter conversion after thermopair 6 is gathered, be sent to industrial computer through data line together with hydraulic signal, vapor pressure signal on the sintering system, on the industrial computer indicating meter, show in real time, these data have reflected the working condition of water supply installation jointly, make things convenient for the staff that the scene is monitored, in time grasp the working condition of water supply installation.
Quicklime slaking is less demanding to hydraulic pressure height, only requires that hydraulic pressure is relatively stable to get final product.Because the cold water water supply pressure can guarantee that if the heat hydraulic pressure is fluctuateed greatly, then the hot water water yield for quicklime slaking can produce fluctuation, can cause not satisfying the requirement of quicklime slaking to the water yield in the time of serious thereupon.In the present embodiment, cold water water supply pressure in the water inlet pipe 3 is about 300kPa, vapor pressure scope in the vapour pipe 2 is in 350～450kPa, pressure in the water tank 1 is the heat hydraulic pressure, be to press and the coefficient result of vapor pressure by cold water, its pressure size is about 300kPa, and the heat hydraulic pressure who therefore supplies with digestion facility is also for about 300kPa.Under the ordinary production situation, intake pressure, vapor pressure fluctuation ratio are less, regulate valve on water inlet pipe and the vapour pipe by industrial computer display monitoring and field personnel, just can be controlled at water temperature in 75 ℃～90 ℃ scopes.Even of short duration unusual fluctuations appear in hydraulic pressure, vapor pressure, also can water temperature be controlled in the scope of processing requirement by on-the-spot manual shift valve.
If processing condition change, no longer be about 300kPa as hydraulic pressure, or vapor pressure also can pass through the purpose that manually realizes regulating pressure by the valve regulated on water inlet pipe and the vapour pipe not in the scope of 350～450kPa.But note 2 points: 1, vapor pressure is larger than the hydraulic pressure in the water inlet pipe, but can not be excessive, and not so cold water is withstood, do not advance water tank 1 by steam.In serious, even to cause effusive in the rising pipe be steam, rather than hot water, can cause serious industrial accident; Operating process when 2, following scene startup/shutdown operation.
When the water supply installation of present embodiment uses, should open and close valve, hurt sb.'s feelings, guarantee operational safety to prevent steam by working specification.Concrete on-the-spot start-up operation is in proper order: the valve of leaving water pipe 4 earlier, drive the valve of water pipe 3 again into, open the valve of vapour pipe 2 at last, then according to the hot water water yield and the hot water temperature of on-the-spot needs, regulate the valve of water inlet pipe 3, vapour pipe 2 and rising pipe 4, make water temperature reach the processing requirement scope and make it relatively stable.Cold water in the water inlet pipe 3 is with after steam in the vapour pipe 2 contacts, cold water begins heat temperature raising, and inflow water tank 1, and in water tank, continue heating and insulation, cold water is in the heat temperature raising process, in the water tank 1 of semi closed, mix simultaneously, water temperature in the water tank 1 is remained in 75 ℃～90 ℃ the temperature range.Hot water behind the mixing flows out by the rising pipe 4 that is positioned at water tank 1 the other end, directly supplies with digestion facility and is used for quicklime slaking.Because in this water supply installation, vapor pressure is greater than hydraulic pressure, and such start-up operation order can prevent to cause the cold water in the water inlet pipe 3 can not enter water tank 1, thereby cause rising pipe 4 not have hot water for quicklime slaking because of after steam is introduced into water tank 1; In addition, also can effectively avoid steam to scald site operation personnel's potential safety hazard.
On-the-spot shutdown operation is in proper order: close the valve of vapour pipe 2 earlier, close the valve of water inlet pipe 3 again, close the valve of rising pipe 4 at last.Such execute-in-place rules are in order to eliminate safe hidden trouble equally, prevent from that high-temperature steam from overflowing to scald the site operation personnel, and the standard that guarantees to produce, orderly, controlled makes production process relatively stable.
This water supply installation is when coming into operation for the first time, and should guarantee necessarily has water in the water tank 1.In addition, because the steam in the vapour pipe 2 comes from the afterheat steam that produces in the sintering circuit, and sintering circuit the unloading phase can not produce steam, thereby do not have steam to originate this moment in the vapour pipe 2, for fear of this situation occurring, vapour pipe 2 can be communicated with iron and steel enterprise total steam pipe system before sintering circuit starts or at the beginning of starting, like this after water supply installation starts in very short for some time, if the water temperature of the hot water that flows out from rising pipe 4 is not if reach requirement, can be by the valve fit adjustment on vapour pipe 2 and the total steam pipe system, the delivery of steam that makes total steam pipe system is in vapour pipe 2.By the time after SINTERING PRODUCTION began, the steam that will have surplus heat produced, and at this moment the valve on vapour pipe 2 and the total steam pipe system was switched again, and just the afterheat steam in the sintering circuit can be offered vapour pipe 2, thereby guarantee the temperature of effusive water in the rising pipe 4.
As noted earlier, why the hot water that this water supply installation can provide between room temperature～100 ℃ water temperature arbitrarily to require be controlled at the hot water temperature in the water tank 1 in 75 ℃～90 ℃ the temperature range, is by the required processing requirement decision of situ production.If under other processing condition, the water that this water supply installation can provide between room temperature～100 ℃ water temperature arbitrarily to require fully.
Digestive tract in the present embodiment comprises the digestion facility that uses in the water supply installation of above-mentioned sintering quicklime slaking and the quicklime slaking technology, include suction culvert in the described digestion facility, described water supply installation is installed on the suction culvert of described digestion facility.
The water supply installation that provides in the present embodiment has not only been broken away from the influence of temperature Change to quicklime slaking, more effectively improved the digestive efficiency of unslaked lime, solved the inadequate problem of reaction in the quicklime slaking process, and impelled SINTERING PRODUCTION to realize benign cycle, be mainly reflected in:
1, all wants twice shutdown cleaning weekly with last mixed cylinder, two mixed cylinders and blending bun, time is generally 4h/ time, now batch mixing cylinder and blending bun putty not can only be checked, clear up in every month regular maintenance batch mixing cylinder and blending bun;
2, bed permeability has improved, can deep-bed sintering;
3, the abundant mineralising of other compounds in unslaked lime and the iron charge, the Theoretical Calculation consumption and the actual amount of unslaked lime are about the same, and the unslaked lime amount of allocating into reduces; Sinter basicity is also uniform and stable relatively, and the white point in the agglomerate has not had, and the chemical ingredients that sample examination obtains is more representative;
4, the agglomerate mineralization intensity improves, and makes the sinter return fine amount reduce.It is in a basic balance to return mine, and sintering fuel consumption reduces; Make the blast furnace feeding powder reduce simultaneously, permeability of stock column improves, and the furnace condition anterograde degree improves.
Adopted this water supply installation not only meaningful to being in southern iron and steel enterprise in Digestive tract, the northern iron and steel enterprise of cold weather is had significant meaning especially, it has strengthened the controllability of SINTERING PRODUCTION greatly.
Be understandable that above embodiment only is the illustrative embodiments that adopts for principle of the present utility model is described, yet the utility model is not limited thereto.For those skilled in the art, under the situation that does not break away from spirit of the present utility model and essence, can make various modification and improvement, for example, if increase the quantity consumed that the rate of flow meter of the water yield and steam just can be learnt the water yield and steam; If automatic improving just can be implemented in the full-automation control of master control room water temperature a little, these modification and improvement also are considered as protection domain of the present utility model.
Claims (10)
1. the water supply installation of a sintering quicklime slaking is characterized in that, comprises water tank (1), and an end of described water tank (1) is provided with the water inlet pipe (3) of cooling water inflow and the vapour pipe (2) that flows into for steam, and its other end is provided with rising pipe (4).
2. the water supply installation of sintering quicklime slaking according to claim 1 is characterized in that, described vapour pipe (2) is connected on the water inlet pipe (3); Angle between vapour pipe (2) and the water inlet pipe (3) is 10 °～45 °.
3. the water supply installation of sintering quicklime slaking according to claim 2 is characterized in that, the vapor pressure in the described vapour pipe (2) is greater than the intake pressure in the water inlet pipe (3), and the pressure difference between vapor pressure and the intake pressure is 50～100kPa.
4. the water supply installation of sintering quicklime slaking according to claim 3 is characterized in that, the position that described water tank (1) is gone up near water inlet pipe (3) is provided with the pressure measuring unit that is used for detecting water tank hydraulic pressure size.
5. the water supply installation of sintering quicklime slaking according to claim 3 is characterized in that, the position that described water tank (1) is gone up near rising pipe (4) is provided with the water temperature temperature measuring unit just that is used for detecting water tank.
6. the water supply installation of sintering quicklime slaking according to claim 1 is characterized in that, is respectively equipped with the valve that can regulate discharge on described water inlet pipe (3) and the rising pipe (4), vapour pipe (2) be provided with can the steam regulation flow valve.
7. the water supply installation of sintering quicklime slaking according to claim 1, it is characterized in that, in the described water tank (1), form hot water after the vapor mixing that flows in cold water that flows in the water inlet pipe (1) and the vapour pipe (2), the water temperature range of this hot water is 75～90 ℃.
8. according to the water supply installation of the described sintering quicklime slaking of one of claim 1-7, it is characterized in that, be coated with lagging material on described water tank (1) outside surface.
9. the water supply installation of sintering quicklime slaking according to claim 8 is characterized in that, described lagging material adopts glass fibre cotton.
10. Digestive tract that comprises the water supply installation of the described sintering quicklime slaking of one of claim 1-9.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104990419A (en) * | 2015-06-17 | 2015-10-21 | 深圳市九峰新材料有限公司 | Digestion system utilizing waste heat and temperature control method thereof |
| CN108572191A (en) * | 2018-03-30 | 2018-09-25 | 攀钢集团攀枝花钢钒有限公司 | Quicklime slaking rate device for fast detecting |
| CN110616314A (en) * | 2019-10-15 | 2019-12-27 | 云南德胜钢铁有限公司 | High-temperature sintering method for schreyerite mixture |
-
2011
- 2011-03-25 CN CN201120083761XU patent/CN202030665U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104990419A (en) * | 2015-06-17 | 2015-10-21 | 深圳市九峰新材料有限公司 | Digestion system utilizing waste heat and temperature control method thereof |
| CN108572191A (en) * | 2018-03-30 | 2018-09-25 | 攀钢集团攀枝花钢钒有限公司 | Quicklime slaking rate device for fast detecting |
| CN110616314A (en) * | 2019-10-15 | 2019-12-27 | 云南德胜钢铁有限公司 | High-temperature sintering method for schreyerite mixture |
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