CN202105466U - Cooling unit assembled settling tank for flash furnace - Google Patents
Cooling unit assembled settling tank for flash furnace Download PDFInfo
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- CN202105466U CN202105466U CN201120074381XU CN201120074381U CN202105466U CN 202105466 U CN202105466 U CN 202105466U CN 201120074381X U CN201120074381X U CN 201120074381XU CN 201120074381 U CN201120074381 U CN 201120074381U CN 202105466 U CN202105466 U CN 202105466U
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- water jacket
- side wall
- sedimentation basin
- cooling
- settling tank
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Abstract
The utility model relates to the field of flash furnaces used for smelting copper, nickel and lead, in particular to a cooling unit assembled settling tank for a flash furnace. The settling tank comprises a settling tank top, a side wall and end wall, wherein the side wall and end wall is located on the lower side of the settling tank top and is divided into a flue gas area, a slag line area and a melting area from top down; cooling tooth racks distributed at intervals are arranged on hanging water jackets in the settling tank top and on one side, which faces to the interior of the settling tank, of each side wall water jacket in the side wall and end wall of the flue gas area and the slag line area; fire bricks are embedded among the cooling tooth racks of the hanging water jackets or the side wall water jackets; and hanging pieces are arranged on the upper sides of the hanging water jackets. According to the settling tank, the cooling area of brick bodies is large, the brick bodies can be assembled under the thermal state, the structure is compact, the daily operating cost is lowered, the processing manufacturability is good, and the assembly and the use are convenient and safe; and the settling tank has good universality, and can be used for various flash furnaces for smelting copper, nickel and lead and metallurgical furnaces with similar structures.
Description
Technical field
The utility model relates to and is used for the plumbous flash furnace apparatus field of copper metallurgy, nickel metallurgy, refining, is specifically related to a kind ofly to adapt to that the high strength melting is big with, brick body film-cooled heat, long service life, the packaging flash stove of the cooling unit sedimentation basin that is easy to overhaul.
Background technology
The flash stove is strong because of its adaptability to raw material, and energy consumption is low, furnace gas SO
2Concentration is high and be used widely in global copper metallurgy, nickel metallurgy industry, and the application of flash stove has at present extended to industries such as refining lead.Along with socio-economic development and people's living standard improve, copper nickel lead metal demand constantly increases, and it is good that plumbous business economic benefit is refined in the copper metallurgy nickel metallurgy.Under safety and stability production run prerequisite, improving inventory to greatest extent, promptly implement the high strength flash and smelt, is that enterprise avoids the essential big investment of newly-built flash stove, makes the production maximization of economic benefit, strengthens the optimal path of enterprise to the turn of the market adaptive capacity.In order to satisfy the production requirement of high inventory, improve the flash furnace body to the erosion under the high inventory, improve the body of heater high life, can promote the develop rapidly of the plumbous flash smelting technique of copper nickel.
The flash stove mainly is made up of reaction tower, sedimentation basin and uptake flue, and reaction tower is the key reaction zone of flash stove, generally adopts the horizontal cooling jacket cooling of multilayer, and liner magnesium chrome refractory constitutes.Owing to use water jacket more, can't overhaul at ordinary times, as water jacket occur and damage and just close cooling water, whole disposable replacings during once cold repair about 10 years.
Uptake flue is the exit region of flash stove, mainly is flash kiln gas passage, and generally except that having the water jacket cooling with the sedimentation basin connecting portion, all the other are built by laying bricks or stones with refractory material and form, and damages lessly at ordinary times, during cold repair, carries out the integral replacing of refractory material.
Sedimentation basin is the main region that the melt slag separates with matte in the stove, and the top of sedimentation basin is the passage of flue gas, also is the passage of coupled reaction tower and uptake flue.Sedimentation basin mainly is made up of furnace roof, side wall and headwall, furnace bottom.Furnace roof generally by the H beam of logical cooling water as load-bearing, build by laying bricks or stones or hang by refractory material and form; Side wall and headwall are divided into flue gas district, slag line district and melt zone from top to bottom, and general integral body is built refractory material by laying bricks or stones and inlayed 1～3 layer of horizontal water jacket formation simultaneously, refractory brick outside lining inclination water jacket; Furnace bottom is built by laying bricks or stones as operational layer brick by two-layer magnesium chrome refractory, builds the several layers insulating brick below by laying bricks or stones and constitutes.
The anterior coupled reaction tower on sedimentation basin top, the rear portion connects uptake flue, because front and back response intensity of living in is different; Damaged condition is also different, and anterior coupled reaction tower peripheral region is called as the trigonum, because response intensity is big; Smoke backflow is big to the body of heater scouring intensity; It is very fast that body of heater corrodes, and all will utilize during the overhaul general every year, local or all change to this zone body of heater; And the general damage in rear portion is lighter, normally need not to change.
Side wall and headwall top are the flue gas district, are exhaust gases passes, are in reaction tower one side equally; The flue gas district is because smoke backflow is big to the body of heater scouring intensity; Reaction tower zone strong reaction, especially along with the increasing of inventory, part continues to accomplish in this zone that is reflected at that reaction tower fails in time to accomplish; Calorific intensity is big, and the body of heater corrosion is very severe; And repair by the moon with stove in the furnace shutting down process such as spot check flue gas district variations in temperature big, for the magnesium chrome refractory, reduce service life significantly; Side wall and headwall middle part are the slag line district, are meant the slag liquid level zone that generates after the melting of flash stove, and slag is generally lighter; Upside at melt; Slag is strong to refractory corrosion property, and the general control of slag temperature is also higher relatively, therefore should damage obviously by the zone refractory material; Side wall and headwall bottom are melt zone, and melt is meant the matte that melting reaction generates, because proportion is in the bottom, molten bath greatly, relatively stable because of fluidity of molten, temperature is controlled lower relatively, and should the zone generally have the Fe of deposition
3O
4Layer protection, therefore should the zone damaged condition will be than a little less than flue gas district and the slag line district.
Flash stove sedimentation basin refractory material is main with magnesium chromium matter traditionally, the horizontal water cover is embedded in the refractory brick, according to magnesium chrome refractory dilatancy characteristics and build requirement by laying bricks or stones; Sedimentation basin side wall refractory material integral body is built by laying bricks or stones, and furnace roof is hung as a whole or arched upward and build by laying bricks or stones, therefore after the intensification of flash stove feeds intake; Fire resisting material of furnace body becomes integral body; After erosion damage appears in the body of heater part, can progressively enlarge, threaten whole body of heater safety.Under big inventory, high heat load production status, the flue gas that body of heater bears corrodes and high temperature corrosion increases considerably, and the body of heater rate of decay is accelerated greatly.
The response intensity that refractory material bore of zones of different is different; The flue gas stream flow direction is different; There is fundamental difference in the refractory corrosion speed of zones of different; For sedimentation basin, near the furnace roof in reaction tower zone with side wall owing to bear very violent concentrate response intensity and violent air-flow erosion, the rate of decay of refractory material is very fast; And rear side is near the uptake flue zone; Sedimentation basin top and side wall flue gas district are because only as exhaust gases passes, rate of decay is relatively low, and the sedimentation basin melt zone is steady relatively; Obviously little many of corrosion rate; During therefore each overhaul, the anterior refractory material major part of sedimentation basin needs to change, and the rear portion does not need to change in continuous 10 years cold repair phase basically.
The flash furnace body adopts fire-resistant the building by laying bricks or stones of magnesium chromium matter in a large number owing to will bear higher smelting temperature, because the anti-extremely cold very hot poor performance of magnesium chrome refractory; So the general heavy oil combustion mode that adopts is incubated when blowing out; Furnace body temperature is remained on more than 1000 ℃, when blowing out for a long time, then reduce to 800 ℃ according to certain temperature lowering curve control furnace body temperature; And after the maintenance blowing out finishes, rise to the production that feeds intake again after the normal temperature according to certain curve.
Hot repair is meant in the body of heater bulk temperature and remains on more than 800 ℃ under the situation; Body of heater among a small circle to body of heater is mended by replacing a damaged part, owing to will guarantee the bulk life time of body of heater, will consider the stable operation that is incubated in the time of maintenance; The construction working face can not be too big on the one hand; And the amount of whole maintenance can not be too big, therefore exists under the situation of corroding in a big way and damaging at the flash furnace body, and hot repair can't be finished the work and can only be solved through cold repair.Normal hot repair was carried out 1 time in per 1～2 year.It is main for the anterior side wall flue gas district of sedimentation basin and slag line district and sedimentation basin ventral triangle district that the zone is generally overhauled in hot repair.
After cold repair mainly is meant the flash furnace body is cooled to normal temperature fully; The maintenance on a large scale that body of heater is carried out; Because body of heater is cooled to normal temperature, for guaranteeing converter life, the also a large amount of replacings of needs of the refractory material that most of hot repair state can keep down; Long construction period, normal need 2～3 months.The cost of overhaul is high, and the loss that stops production is big, therefore just can overhaul once in general 9～10 years.
In the grand 350,000 tons of transformation process of flash stove of gold, once used 2 layers of horizontal water jacket of increase to strengthen scheme to the protection of sedimentation basin refractory brick; Though obtain certain effect; But because of body of heater still is to be main with refractory material, can't change its maintenance characteristic, can only suitably increase refractory material service life; The grand overhaul life of gold was changed into about 18 months by original 1 year, but still can't thoroughly solve body of heater maintenance and body of heater local damage problem.
The Guixi uses 2～3 layers of horizontal water jacket to strengthen the anterior type of cooling of sedimentation basin in new 30 tons of flash stoves too, and result of use is grand similar with gold, still can not deal with problems.
Said method fails to solve up hill and dale problems such as the flash stove sedimentation basin repair time is long, and economic loss is big, especially just improves sedimentation basin side wall subproblem, does not still have scheme preferably at present for the trigonum.
Summary of the invention
The purpose of the utility model provides the packaging flash stove of a kind of cooling unit sedimentation basin; The utility model not only have brick body film-cooled heat big, be easy to assembly unit and advantage such as can hotly change, and solved present high strength melting situation settle pond regional area rate of decay fast, repair problems such as big and off-time of difficulty is long.
For realizing above-mentioned purpose; The utility model has adopted following technical scheme: the packaging flash stove of a kind of cooling unit sedimentation basin; Comprise sedimentation basin top and the side wall and the headwall that are positioned at sedimentation basin top downside; Side wall and headwall from top to bottom are divided into flue gas district, slag line district and melt zone; Hanging water jacket and being arranged in the flue gas district and the side of the side wall water jacket of the side wall in slag line district and headwall towards sedimentation basin inside is provided with the cooling tooth bar that is intervally arranged in the described sedimentation basin top hung between the cooling tooth bar of water jacket or side wall water jacket and is embedded with refractory brick; The described upside of hanging water jacket also promptly is provided with suspender member away from a side of sedimentation basin inside.
The utility model can also be able to further realization through following technical measures:
Inboard cross-sectional width between the described cooling tooth bar of hanging water jacket or side wall water jacket is greater than the cross-sectional width of cooling tooth bar opening part; And the shape that is held on the part between the cooling tooth bar of cross sectional shape between the cooling tooth bar and refractory brick matches, and inlays refractory brick to help clamping.
Further, big outer little mushroom head or T shape or dovetail shaped in the cross sectional shape between the described cooling tooth bar of hanging water jacket or side wall water jacket is.
It is said that to hang water jacket or side wall water jacket prefabricated as a whole with the refractory brick that is embedded in wherein.
Described refractory brick is magnesium chromium refractory brick.
The water jacket of described side wall that is arranged in melt zone and headwall be plate shaped, plate shaped water jacket towards the inner sidelining magnesium chromium refractory brick of sedimentation basin, be provided with refractory wass between plate shaped water jacket and the magnesium chromium refractory brick.
The beneficial effect of the utility model is: the utility model economic benefit is obvious, and brick body film-cooled heat is big, can be hot assembly unit down, compact conformation, the day-to-day operation expense reduces, processing technology is good, installs and uses handy and safe; And the versatility of the utility model is good, all can use for various copper metallurgys, nickel metallurgy, the plumbous flash smelting furnace of refining and other close structure moral metallurgical furnaces.
Description of drawings
Fig. 1 is the middle profile of sedimentation basin structure;
Fig. 2 is the ventral triangle district vertical view in the sedimentation basin structure;
Fig. 3 is the side view of sedimentation basin side wall and headwall.
The specific embodiment
Shown in Fig. 1～3; The packaging flash stove of cooling unit sedimentation basin; Mainly comprise and adopt difformity and the assembled assembly type sedimentation basin of the buried tube type cooling jacket of structural similarity; Sedimentation basin comprises by sedimentation basin top 1, side wall and the flue gas district of headwall and the melt zone 3 and the furnace bottom 4 of slag line district 2, side wall and headwall and constituting; Sedimentation basin top 1 is also promptly inlayed brick 6 and is hung the back composite assembly through suspender member 7 and form by hanging water jacket 5, refractory brick; In the sedimentation basin side wall and headwall top flue gas district and slag line district 2 also promptly inlay brick 9 usefulness set bolts by side wall water jacket 8 and refractory brick to be fixed in external frame assembled, the melt zone 3 of side wall and headwall bottom is made up of water jacket 10 liner magnesium chromium refractory bricks in the sedimentation basin.
The operation principle and the course of work of the utility model are described below:
Sedimentation basin top application worker: according to the on-the-spot true form of different flash stoves, design the difform water jacket 5 of hanging respectively, water jacket is built by copper and is formed, and pre-buried copper pipe is in pour; As shown in Figure 1, the lower part of hanging water jacket 5 is furnished with E shape tooth, also promptly hangs the side wall water jacket 8 that water jacket 5 is arranged in side wall and the headwall in flue gas district and slag line district and is provided with the cooling tooth bar that is intervally arranged towards the inner side of sedimentation basin; According to the profile of tooth that designs, customize magnesium chromium refractory brick then, and refractory brick is inlayed to tooth, form an edge brick formula water jacket.Before the construction, under the situation that does not influence production, will hang beam and install earlier, and treat after the blowing out water jacket and brick to be carried out assembly unit by reservation shape, and after assembly unit finishes cooling water fed the water jacket copper pipe and promptly finish, as shown in Figure 2.
The sedimentation basin side wall is constructed with headwall: earlier according to the on-the-spot true form of different flash stoves; The side wall water jacket 8 of design flat plates with different sizes shape water jacket 10 and dentation; The height of side wall water jacket 8 covers flue gas district and slag line district 2; Simultaneously according to tooth-shape structure sized corresponding construction refractory brick, before construction, refractory brick is inlayed among the tooth bar with side wall water jacket 8, and refractory brick and side wall water jacket 8 are fixed into an integral body with mould.Before the construction,, water jacket support and fixture are installed in advance at the ordinary production state.After the blowing out, original wall body is removed, after bottom brick is exposed in cleaning; The requirement of building by laying bricks or stones of refractory material being installed according to melt zone 3 lays the side wall brick; The dull and stereotyped water jacket 10 of melt zone is installed on the external side of brick of refractory brick, tamp with refractory wass in the gap between refractory brick and the dull and stereotyped water jacket 10 again, and 10 assembly units of dull and stereotyped water jacket that will inlay the dentation of brick then fix; With water jacket water flowing cooling, as shown in Figure 3 then.
Preferably, the inboard cross-sectional width between the described cooling tooth bar of hanging water jacket 5 or side wall water jacket 8 is inlayed refractory brick greater than the cross-sectional width of cooling tooth bar opening part to help clamping.
Because the inboard cross-sectional width between the cooling tooth bar is greater than the cross-sectional width of cooling tooth bar opening part; Not only increased the clamping area between water jacket and the refractory brick; And make that refractory brick is difficult to from the clamping zone that the cooling tooth bar forms, throw off, thereby guaranteed the globality of water jacket and refractory brick.
Further, big outer little mushroom head or T shape or dovetail shaped in the cross sectional shape between the described cooling tooth bar of hanging water jacket or side wall water jacket is, these several kinds of versions not only help processing and manufacturing, and clamping is inlayed effective.
The utlity model has two significant architectural features of " brick body film-cooled heat is big " and " but assembleability ".
1), brick body film-cooled heat is big
Because having the water jacket surface area horizontal water jacket more in the past of rack structure increases considerably; Contact area between water jacket and the refractory brick also increases considerably; Therefore water jacket increases substantially the film-cooled heat of the brick body of refractory material; And because refractory brick is according to the customization of the profile of tooth of water jacket, so the water jacket face gets togather with the brick consideration, heat transfer property further strengthens.This characteristic has caused the direct technology effect: refractory life increases considerably.The body of heater repair time reduces, and the production time prolongs, and economic benefit is obvious.
2) but assembleability
Owing to adopt water jacket and refractory brick also promptly to inlay the integral prefabricated mode of brick, after whole edge brick water jacket precast block is good, assemble respectively again, but therefore have the characteristic of assembleability.This characteristic has caused following three direct technology effects: the one, maintenance is convenient because different water jacket pieces can change separately, in the past must overhaul or the cold repair body of heater repairing that could realize, can be implemented in hot under local replacing.The 2nd, the blowing out engineering time reduces significantly, carries out before being operated in blowing out because most of edge brick water jacket is prefabricated, therefore needs the time of blowing out construction to reduce significantly.The 3rd, maintenance labour intensity is little, and environment is good, because most of service work is outside space for maintenance, to carry out, really the following repair time of high temperature reduces significantly at the scene, so the service work improvement of terms.
The comprehensive direct technology effect that " brick body film-cooled heat is big " of the utility model and " but assembleability " two architectural features cause is: the fire resisting material of furnace body life-span increases considerably after at first each the repairing; 2 to 3 months sedimentation basin trigonums and side wall slag line district will begin to occur the rubescent phenomenon of local body of heater after the former method overhaul; After the overhaul in August, 2010 of Jin Long company; Though bring up to 178t/h in flash stove inventory by 165t/h, do not occur the rubescent phenomenon of localized precipitation tank furnace body so far.Secondly each sedimentation basin overhaul maintenance is shortened significantly; Because each overhaul is all with the time core of sedimentation basin maintenance as the overhaul of full factory, because this modular construction shortens the body of heater construction significantly; Factory's overhaul time is shortened; Production time increases, so remarkable in economical benefits, and maintenance amount simultaneously descends and the repair time shortening also makes production cost reduce significantly.
The utility model is applicable to all high temperature smelting equipments.The invention implementation result shows: the invention remarkable in economical benefits, and Jin Long company adopts this mode during overhaul in 2010, utilizes 15 day time to change half the sedimentation basin top and side wall and the anterior headwall of sedimentation basin; When normal maintenance is economized on nearly 15 days; Inspection speed obviously increases, and the zone is not overhauled at while discovery rear portion after blow-on has a body of heater water jacket drainage to occur, utilizes the moon to repair the time; Adopt in the same way, within 8 hours with local body of heater and water jacket reparation.Simultaneously after overhaul finishes; The grand flash stove of gold is increased under the 178t/h situation in inventory from 165t/h; A series of phenomenons such as sedimentation basin uses and reached 6 months, and body of heater does not occur water jacket again and leaks, and body of heater is rubescent; Sorrow situation under traditional maintenance mode situation far away, but demonstrated fully the big advantage of bringing with assembleability of brick body film-cooled heat; Processing technology is good, and fitting operation is easy.
Claims (6)
1. the packaging flash stove of cooling unit sedimentation basin; The side wall and the headwall that comprise sedimentation basin top (1) and be positioned at sedimentation basin top (1) downside; Side wall and headwall from top to bottom are divided into flue gas district, slag line district and melt zone; It is characterized in that: hanging water jacket (5) and being arranged in the flue gas district and the side of the side wall water jacket of the side wall in slag line district and headwall (8) towards sedimentation basin inside is provided with the cooling tooth bar that is intervally arranged in the described sedimentation basin top (1), hang between the cooling tooth bar of water jacket (5) or side wall water jacket (8) and be embedded with refractory brick; The described upside of hanging water jacket also promptly is provided with suspender member (7) away from a side of sedimentation basin inside.
2. the packaging flash stove of cooling unit according to claim 1 sedimentation basin is characterized in that: the inboard cross-sectional width between the described cooling tooth bar of hanging water jacket (5) or side wall water jacket (8) is greater than the cross-sectional width of cooling tooth bar opening part; And the shape that is held on the part between the cooling tooth bar of cross sectional shape between the cooling tooth bar and refractory brick matches.
3. the packaging flash stove of cooling unit according to claim 1 sedimentation basin is characterized in that: described to hang water jacket (5) or side wall water jacket (8) prefabricated as a whole with the refractory brick that is embedded in wherein.
4. the packaging flash stove of cooling unit according to claim 2 sedimentation basin is characterized in that: big outer little mushroom head or T shape or dovetail shaped in the cross sectional shape between the described cooling tooth bar of hanging water jacket (5) or side wall water jacket (8) is.
5. according to claim 1 or 2 or the 3 or 4 packaging flash stove of described cooling unit sedimentation basins, it is characterized in that: described refractory brick is magnesium chromium refractory brick.
6. according to claim 1 or 2 or the 3 or 4 packaging flash stove of described cooling unit sedimentation basins; It is characterized in that: the described side wall of melt zone and the water jacket of headwall (10) of being arranged in is for plate shaped; Plate shaped water jacket (10) is provided with refractory wass towards the inner sidelining magnesium chromium refractory brick of sedimentation basin between plate shaped water jacket (10) and the magnesium chromium refractory brick.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120074381XU CN202105466U (en) | 2011-03-21 | 2011-03-21 | Cooling unit assembled settling tank for flash furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120074381XU CN202105466U (en) | 2011-03-21 | 2011-03-21 | Cooling unit assembled settling tank for flash furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202105466U true CN202105466U (en) | 2012-01-11 |
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ID=45430915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120074381XU Expired - Lifetime CN202105466U (en) | 2011-03-21 | 2011-03-21 | Cooling unit assembled settling tank for flash furnace |
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| Country | Link |
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| CN (1) | CN202105466U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108004417A (en) * | 2017-10-17 | 2018-05-08 | 广西金川有色金属有限公司 | A kind of high melt liquid level flash converting furnace and its control and operating method |
| CN110319706A (en) * | 2018-03-29 | 2019-10-11 | 中国瑞林工程技术有限公司 | Metallurgical furnace flue |
-
2011
- 2011-03-21 CN CN201120074381XU patent/CN202105466U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108004417A (en) * | 2017-10-17 | 2018-05-08 | 广西金川有色金属有限公司 | A kind of high melt liquid level flash converting furnace and its control and operating method |
| CN110319706A (en) * | 2018-03-29 | 2019-10-11 | 中国瑞林工程技术有限公司 | Metallurgical furnace flue |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120111 |
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| CX01 | Expiry of patent term |