CN100520262C - Kiln for cintering refractory material and method of cintering refractory material - Google Patents
Kiln for cintering refractory material and method of cintering refractory material Download PDFInfo
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- CN100520262C CN100520262C CNB2006101607801A CN200610160780A CN100520262C CN 100520262 C CN100520262 C CN 100520262C CN B2006101607801 A CNB2006101607801 A CN B2006101607801A CN 200610160780 A CN200610160780 A CN 200610160780A CN 100520262 C CN100520262 C CN 100520262C
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Abstract
The invention discloses a kiln and the method used to sinter refractory. The kiln includes the orderly adjacent first, second, third, forth closets between each two of which is respectively divided by the first, second, third, forth bulkheads. Each of the closets is set independent bocca, kiln opening, and chimney. Each of the bulkheads is set independent heat elimination. The kiln of the invention can circularly sinter refractory by the orderly many closets to effectively utilize closets remaining heat, save energy source, and obviously increase the rate of products meeting standards and production efficiency.
Description
Technical field
The present invention relates to a kind of kiln, particularly a kind of kiln that is used for sintered refractory.
Background technology
The kiln of sintered refractory adopts the round kiln and the tunnel cave of monomer more at present, these two kinds of kilns all exist productivity ratio low, the Fuel Consumption height, can not effectively utilize the problem of sintering waste heat, reason is, when the refractory material in the kiln burns when ripe, temperature in the stove is usually up to more than 1400 degree, for taking out product in the stove, need to dispel the heat by the air blast blowing through about 48 hours time, so that making the interior temperature of stove reduces to below 100 degree, product in the kiln could be taken out of, like this when sintering next group refractory material, kiln need be heated to once more 1400 degree, heat in the stove is wasted and can not be used, and wasted 48 hours heat radiation stand-by period and can not produce, therefore significantly reduced productivity ratio.
Though existing tunnel cave is compared with round kiln, has advantages such as fast energy-saving, there is the defective of product percent of pass in it.Since tunnel cave by directly in the firing chamber flame come refractory brick in the firing chamber is carried out Fast Heating, the process that heats up gradually, it is uneven therefore not cause adobe to heat up, and fried phenomenon frequently occurs splitting, occurs defect ware easily, causes product percent of pass lower.
Summary of the invention
The objective of the invention is to provide a kind of method that is used for the kiln of sintered refractory and utilizes this kiln sintered refractory at above problems of the prior art, this kiln is by being provided with a plurality of firing chambers of working in turn, to significantly improve product percent of pass and production efficiency, saved the energy simultaneously greatly.
For realizing purpose of the present invention, the kiln that one aspect of the present invention provides, comprise first of adjacency successively, second, third and fourth furnace chamber, between first and second furnace chambers, between the second and the 3rd furnace chamber, between third and fourth furnace chamber and between the 4th and first furnace chamber respectively by first, second, third and fourth next door separates, each furnace chamber is provided with the independent bocca of flame in furnace chamber separately, the chimney that is used to load and unload the furnace door of material and can be communicated with and be positioned at the kiln top with each furnace chamber, the next door is provided with the independent radiator structure that control is isolated in abutting connection with connected sum between the furnace chamber separately.
Particularly, in the next door of the first, second, third and the 4th next door meet louvre is set, this louvre and four furnace chambers are isolated.
Particularly, radiator structure is positioned at the top in next door, comprises thermovent that is arranged in the next door and the heat radiation dividing plate that can move up and down in thermovent.
Particularly, first to fourth furnace chamber is provided with independent furnace chamber to be opened/closed air channel separately, and described furnace chamber is communicated with described chimney by described furnace chamber air channel.
The present invention provides a kind of method of utilizing above-mentioned kiln sintered refractory on the other hand, comprises the step of following order:
1) makes between first furnace chamber and second furnace chamber and the 4th furnace chamber and all to keep isolating, make by bocca flame in first furnace chamber that temperature rises to the temperature of requirement in it, so that material in first furnace chamber is carried out sintering;
2) burn when ripe when the refractory material in first furnace chamber, make and keep between the second and the 3rd furnace chamber isolating, then make between first furnace chamber and second furnace chamber to communicate, and first furnace chamber and chimney are isolated and second furnace chamber is communicated with chimney, so that make the interior intensification of second furnace chamber;
3) when temperature rises to predetermined temperature in second furnace chamber, make between first and second furnace chambers mutually and isolate, make by bocca flame in second furnace chamber then that temperature rises to the temperature of requirement in it, so that material in second furnace chamber is carried out sintering.
Particularly, also comprise step:
4) burn when ripe when the refractory material in second furnace chamber, make to keep between third and fourth furnace chamber isolating, make between second furnace chamber and the 3rd furnace chamber to communicate, and second furnace chamber is isolated with chimney and the 3rd furnace chamber is communicated with chimney, so that make the interior intensification of the 3rd furnace chamber;
5) when temperature rises to predetermined temperature in the 3rd furnace chamber, make between the second and the 3rd furnace chamber to keep isolating, make by bocca flame in the 3rd furnace chamber that temperature rises to the temperature of requirement in it, so that material in the 3rd furnace chamber is carried out sintering;
6) burn when ripe when the refractory material in the 3rd furnace chamber, make to keep between the 4th and first furnace chamber isolating, make between the 3rd furnace chamber and the 4th furnace chamber to communicate, and the 3rd furnace chamber is isolated with chimney and the 4th furnace chamber is communicated with chimney, so that make the interior intensification of the 4th furnace chamber;
7) when temperature rises to predetermined temperature in the 4th furnace chamber, make between third and fourth furnace chamber to keep isolating, make by bocca flame in the 4th furnace chamber that temperature rises to the temperature of requirement in it, so that material in the 4th furnace chamber is carried out sintering;
8) burn when ripe when the refractory material in the 4th kiln, make to keep between first and second furnace chambers isolating, communicate between the 4th and first furnace chamber, and first furnace chamber is communicated with chimney and make the 4th furnace chamber and chimney isolation and make.
Wherein, in step 5), when material carries out sintering in the 3rd furnace chamber, can take out the material that has sintered in first furnace chamber, the material to be sintered of then packing into; In step 7), when material carries out sintering in the 4th furnace chamber, can take out the material that has sintered in second furnace chamber, the material to be sintered of then packing into.
Particularly, the top, next door between the furnace chamber is provided with radiator structure, and radiator structure comprises thermovent and packaged type heat radiation dividing plate, opens or closes thermovent and realizes communicating or isolate between the described furnace chamber by moving up and down the heat radiation dividing plate.
Particularly, communicate by independent air channel respectively between each furnace chamber and the chimney, realize communicating or isolate between described furnace chamber and the chimney by opening or closing described air channel.
Wherein, predetermined temperature is 500 ± 50 ℃.
The invention has the advantages that following aspect:
1. kiln of the present invention is compared with the round kiln of monomer, but energy savings 35-50% during burning refractory brick.To fire 100 tons of refractory brick is example, the gas that the typical circular kiln needs 35 tons of raw coal of consumptive use to make, and the gas that kiln of the present invention only needs 20 tons of raw coal of consumptive use to make.
2. kiln of the present invention is compared and can significantly be saved time with the round kiln of monomer, has therefore improved productivity ratio greatly.To fire 100 tons of refractory brick is example, and common monomer round kiln needs 15 day time, and kiln of the present invention then only needs 7 days.
3. kiln of the present invention and people generally believe that the tunnel cave of fast energy-saving compares, and are not only more flexible, do not need equipment such as the required mechanical car of tunnel cave, track, propeller and baking room, and under identical investment, significantly improved production efficiency.Generally build a tunnel cave and need invest 3,000,000 yuan, invest with this and can build up 6 kilns of the present invention; The output that tunnel cave is produced refractory brick every day only is 20-30 tons, and the output of 6 kiln of the present invention every days can reach about 86 tons, therefore identical investment and in the production time, and output has improved 3-5 doubly, has improved production efficiency greatly.
4. the product percent of pass height of kiln of the present invention, because a furnace chamber of the present invention is when burning, all heating up in other three firing chambers, waste heat after refractory brick burns till can heat and make its temperature to rise to about 500 degree to next firing chamber's refractory brick that needs are fired, therefore can not make firebrick billet intensification inequality and fried phenomenon occur splitting.
Description of drawings
Fig. 1 is the horizontal layout schematic diagram of kiln embodiment of the present invention;
Fig. 2 is the front view of kiln of the present invention shown in Figure 1;
Fig. 3 is the structural representation along next door between first furnace chamber of A among Fig. 1-A line and the 4th furnace chamber and between second furnace chamber and the 3rd furnace chamber;
Fig. 4 is the structural representation along next door between first furnace chamber of B among Fig. 1-B line and second furnace chamber and between the 3rd furnace chamber and the 4th furnace chamber.
Description of reference numerals: 1, first furnace chamber; 2, second furnace chamber; 3, the 3rd furnace chamber; 4, the 4th furnace chamber; 5, first next door; 51 first heat radiation roads; 52 first heat radiation dividing plates; 6, second next door; 61 second heat radiation roads; 62 second heat radiation dividing plates; 7, the 3rd next door; 71 the 3rd heat radiation roads; 72 the 3rd heat radiation dividing plates; 8, the 4th next door; The 81 hot roads that scatter; The 82 hot dividing plates that scatter; 9, louvre; 11a, 11b, the first furnace chamber bocca; 12, first fire door (dress storage door); 21a, 21b, the second furnace chamber bocca; 22, second fire door; 31a, 31b, the 3rd furnace chamber bocca; 32, the 3rd fire door; 41a, 41b, the 4th furnace chamber bocca; 42, the 4th fire door.
The specific embodiment mode
Describe the structure of kiln of the present invention and the technical process of this kiln sintered refractory block of use with reference to the accompanying drawings in detail.
Kiln of the present invention shown in Figure 1 is a kind of kiln that is used for sintered refractory, this kiln is 24.5 cubic metres furnace chamber 1 by four capacity, 2,3 and 4 constitute, the horizontal cross-section of kiln body is into rectangle substantially, the horizontal cross-section of each furnace chamber is also rectangular substantially, four furnace chambers are sphere of movements for the elephants shape substantially and arrange, each furnace chamber is not only separate but also be interconnected, wherein first furnace chamber 1 and second furnace chamber 2, second furnace chamber 2 and the 3rd furnace chamber 3, the 3rd furnace chamber 3 and the 4th furnace chamber 4, between the 4th furnace chamber 4 and first furnace chamber 1 respectively by first next door 5, second next door 6, the 3rd next door 7, the 4th next door 8 separates, the position of close top is provided with respectively and can makes the heat radiation road 51 that is communicated with between the adjacent furnace chamber on each next door, 61,71 and 81, heat radiation road 51,61, be respectively equipped with the heat radiation dividing plate 52 that can in the heat radiation road, vertically move around in 71 and 81,62,72 and 82, be used for opening and closing the heat radiation road by these heat radiation dividing plates.
The meet in first next door 5, second next door 6, the 3rd next door 7, the 4th next door 8 also is provided with louvre 9 in addition, this louvre 9 by down from extend to the crown and communicate with the external world, be used to separate four furnace chambers, such as, when sintering the 3rd furnace chamber 3, the bight of first furnace chamber 1 can not burnt red, thereby is convenient to take out from first furnace chamber 1 refractory brick and refractory brick material to be sintered of packing in it that has sintered; And when sintering the 4th furnace chamber 4, be convenient to from second furnace chamber 2, take out the refractory brick and the refractory brick material to be sintered of in it, packing into that has sintered.The horizontal cross sectional geometry of louvre 9 is circle, rectangle or arbitrary polygon.When
First to fourth furnace chamber 1 to 4 is provided with independent furnace chamber to be opened/closed air channel (not shown) separately, and each furnace chamber is communicated with the chimney (not shown) of kiln by furnace chamber air channel separately.
First to fourth furnace chamber 1 to 4 has two sidewalls towards the outside separately, one of two sidewalls are established fire door, also can claim dress storage door, as shown in Figure 1, one of lateral wall of first furnace chamber 1, second furnace chamber 2, the 3rd furnace chamber 3 and the 4th furnace chamber 4 is respectively equipped with first fire door 12, second fire door 22, the 3rd fire door 32 and the 4th fire door 42, these fire doors be used in each furnace chamber, packing into material to be sintered such as refractory brick and from each furnace chamber, take out the refractory brick material that has sintered.
Be provided with on each sidewall of fire door and also be respectively equipped with two boccas, two boccas are positioned at the both sides of each fire door, and for example, the both sides of first fire door 5 are established first bocca 11a and the 11b respectively.Kiln of the present invention adopts the coal gas made from coal, by making its burning and spraying in the furnace chamber to fire the refractory brick material from bocca, can not produce waste gas, dust, waste residue in the gas-fired process, therefore helps environmental protection.
When burning furnace chamber in four furnace chambers, the heat that can utilize this furnace chamber originally should be wasted for other three furnace chambers heating, is fully utilized its heat.
The technical process of utilizing kiln sintered refractory block of the present invention is described below.
At first, sintering first furnace chamber 1: make the hot road 81 that scatters of the between first between first and second furnace chambers heat radiations road 51 and the first and the 4th furnace chamber keep closing respectively by heat radiation dividing plate 52 moving up and down and heat radiation dividing plate 82, by the first flame road 11a, 11b flame in first furnace chamber, make 1400 ℃ of its Nei Wenduda, so that the refractory brick in first furnace chamber is carried out sintering.
When the refractory brick in first furnace chamber 1 burns when ripe, by first furnace chamber 1 and the first heat radiation dividing plate 52 of adjacent second furnace chamber 2 that is about to igniting are opened, make the heat radiation of second between second furnace chamber 2 and the 3rd furnace chamber 3 road 61 keep closing by the second heat radiation dividing plate 62 simultaneously.Then open the air channel of the second adjacent furnace chamber 2 and second furnace chamber 2 is communicated with chimney, and the air channel that first furnace chamber 1 leads to chimney is closed, so that quicken heat transmission between first and second furnace chambers.First furnace chamber 1 is through after about 48 hours heat radiation, and the temperature in the second adjacent furnace chamber 2 rises to about 500 degree, can utilize the waste heat of first furnace chamber 1 that second furnace chamber 2 is heated up thus.
Then, sintering second furnace chamber 2: when the temperature in second furnace chamber 2 rises to the 500 degree left and right sides, heat radiation dividing plate 52 moving up and down is retracted in the first heat radiation road 51 and made the first heat radiation road 51 keep closing, the second bocca 21a, 21b by second furnace chamber 2 make 1400 ℃ of its Nei Wenduda to flame in it, thereby calcine the refractory brick to be sintered in it.
When the refractory brick in second furnace chamber 2 burns when ripe, by second furnace chamber 2 and the heat radiation dividing plate 62 of adjacent the 3rd furnace chamber 3 that is about to igniting are opened, make the heat radiation of the 3rd between the 3rd furnace chamber 3 and the 4th furnace chamber 4 road 71 keep closing by the 3rd heat radiation dividing plate 72 simultaneously, the air channel of then opening the 3rd furnace chamber 3 makes it communicate with chimney, and the air channel that second furnace chamber 2 leads to chimney closed, thereby quicken the heat transmission between the second and the 3rd furnace chamber, second furnace chamber 2 is through after about 48 hours heat radiation, temperature in the 3rd adjacent furnace chamber 3 rises to about 500 degree, can utilize the waste heat of second furnace chamber 2 that the 3rd furnace chamber 3 is heated up thus;
Then, sintering the 3rd furnace chamber: when the temperature in the 3rd furnace chamber 3 rises to the 500 degree left and right sides, heat radiation dividing plate 62 moving up and down is retracted in the second heat radiation road 61 and made the second heat radiation road 61 keep closing, the 3rd bocca 31a, 31b by the 3rd furnace chamber 3 make 1400 ℃ of its Nei Wenduda to flame in it, thereby calcine the refractory brick to be sintered in it.
In the refractory brick, can draw off the refractory brick that has sintered in first furnace chamber 1 in sintering the 3rd furnace chamber 3, the refractory brick material of then packing into to be sintered is so that carry out the firing of next circulation in first furnace chamber 1.
When the refractory brick in the 3rd furnace chamber 3 burns when ripe, by the 3rd furnace chamber 3 and the heat radiation dividing plate 72 of adjacent the 4th furnace chamber 4 that is about to igniting are opened, make the hot road 81 that scatters of the between the 4th furnace chamber 4 and first furnace chamber 1 keep closing simultaneously, the air channel of then opening the 4th furnace chamber 4 makes it communicate with chimney, and the air channel that the 3rd furnace chamber 3 leads to chimney closed, so that quicken the heat transmission between third and fourth furnace chamber, the 4th furnace chamber 4 is through after about 48 hours heat radiation, temperature in the 4th adjacent furnace chamber 4 rises to about 500 degree, can utilize the waste heat of the 3rd furnace chamber 3 that the 4th furnace chamber is heated up thus.
Then, sintering the 4th furnace chamber: when the temperature in the 4th furnace chamber 4 rises to the 500 degree left and right sides, heat radiation dividing plate 72 moving up and down is retracted in the 3rd heat radiation road 71 and made the 3rd heat radiation road 71 keep closing, the 4th bocca 41a, 41b by the 4th furnace chamber 4 make 1400 ℃ of its Nei Wenduda to flame in it, thereby calcine the refractory brick to be sintered in it.
In the refractory brick, can draw off the refractory brick that has sintered in second furnace chamber 2 in sintering the 4th furnace chamber 4, the refractory brick material of then packing into to be sintered is so that carry out the firing of next circulation in second furnace chamber 2.
When the refractory brick in the 4th furnace chamber 4 burns when ripe,, make the heat radiation of first between first furnace chamber 1 and second furnace chamber 2 road 51 keep closing by the first heat radiation dividing plate 52 simultaneously by the 4th furnace chamber 4 and the heat radiation dividing plate 82 of adjacent first furnace chamber 1 that is about to igniting are opened.The air channel of then opening first furnace chamber 1 makes it communicate with chimney, and the air channel that the 4th furnace chamber 4 leads to chimney closed, so that quicken the heat transmission between the 4th and first furnace chamber, the 4th furnace chamber 4 is through after about 48 hours heat radiation, and the temperature in the first adjacent furnace chamber 1 rises to about 500 degree.
After this, the refractory brick that carries out in above each furnace chamber of steps in sequence sintering capable of circulation.
Claims (5)
1, a kind of method of utilizing the kiln sintered refractory, wherein the structure of kiln comprises first of adjacency successively, second, third and fourth furnace chamber (1,2,3,4), between first and second furnace chambers, between the second and the 3rd furnace chamber, between third and fourth furnace chamber and between the 4th and first furnace chamber respectively by first, second, third and fourth next door (5,6,7,8) separate, each furnace chamber (1,2,3,4) be provided with separately independent in furnace chamber the bocca (11a of flame, 11b, 21a, 21b, 31a, 31b, 41a, 41b) with the furnace door (11 that is used to load and unload material, 21,31,41), and can be communicated with the chimney that is positioned at the kiln top, first to fourth next door (5,6,7,8) be provided with the radiator structure (51 that control is isolated in abutting connection with connected sum between the furnace chamber separately, 52,61,62,71,72,81,82), step sintered refractory in the following order:
1) makes between first furnace chamber (1) and second furnace chamber (2) and the 4th furnace chamber (4) and to keep respectively isolating, make by first bocca (11a, 11b) flame in first furnace chamber that temperature rises to the temperature of requirement in it, so that material in first furnace chamber is carried out sintering;
2) burn when ripe when the refractory material in first furnace chamber, make and keep between the second and the 3rd furnace chamber (2,3) isolating, then make between first furnace chamber and second furnace chamber to communicate, and second furnace chamber is communicated with chimney and first furnace chamber and chimney are isolated, heat up in second furnace chamber so that make;
3) when temperature rises to predetermined temperature in second furnace chamber, make between first and second furnace chambers and isolate mutually, then make to the second furnace chamber flame that temperature rises to the temperature of requirement in it, so that material in second furnace chamber is carried out sintering by second bocca (21a, 21b);
4) burn when ripe when the refractory material in second furnace chamber, make to keep between third and fourth furnace chamber isolating, make between second furnace chamber and the 3rd furnace chamber to communicate, and second furnace chamber is isolated with chimney and the 3rd furnace chamber is communicated with chimney, so that make the interior intensification of the 3rd furnace chamber;
5) when temperature rises to predetermined temperature in the 3rd furnace chamber, make and keep between the second and the 3rd furnace chamber isolating, temperature rises to the temperature of requirement in it to making to the 3rd furnace chamber flame by the 3rd bocca (31a, 31b), so that material in the 3rd furnace chamber is carried out sintering;
6) burn when ripe when the refractory material in the 3rd furnace chamber, make to keep between the 4th and first furnace chamber isolating, make between the 3rd furnace chamber and the 4th furnace chamber to communicate, and the 4th furnace chamber is communicated with chimney and the 3rd furnace chamber and chimney are isolated, so that make the interior intensification of the 4th furnace chamber;
7) when temperature rises to predetermined temperature in the 4th furnace chamber, make and keep between third and fourth furnace chamber isolating, then make that temperature rises to the temperature of requirement in it, so that material in the 4th furnace chamber is carried out sintering by the 4th bocca (41a, 41b) flame in the 4th furnace chamber;
8) burn when ripe when the refractory material in the 4th kiln, make to keep between first and second furnace chambers isolating, communicate between the 4th and first furnace chamber, and first furnace chamber is communicated with chimney and the 4th furnace chamber and chimney are isolated, so that make the interior intensification of first furnace chamber and make.
Wherein, in step 5), when material carries out sintering in described the 3rd furnace chamber, the material that has sintered in first furnace chamber can be taken out, in step 7), when material carries out sintering in described the 4th furnace chamber, the material that has sintered in second furnace chamber can be taken out.
2, the method for claim 1, it is characterized in that: each described radiator structure is positioned at the top in next door (5,6,7,8) separately, comprise thermovent and packaged type heat radiation dividing plate, open or close thermovent and realize communicating or isolate between the described furnace chamber by moving up and down the heat radiation dividing plate.
3, method as claimed in claim 1 or 2 is characterized in that: communicate by independent air channel respectively between described each furnace chamber and the chimney, realize communicating or isolate between described furnace chamber and the chimney by opening or closing described air channel.
4, method as claimed in claim 1 or 2 is characterized in that: described predetermined temperature is 500 ± 50 ℃.
5, method as claimed in claim 1 or 2 is characterized in that: in the next door of the meet in the described first, second, third and the 4th next door (5,6,7,8) louvre (9) is set, this louvre and described four furnace chambers are isolated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101607801A CN100520262C (en) | 2006-12-01 | 2006-12-01 | Kiln for cintering refractory material and method of cintering refractory material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101607801A CN100520262C (en) | 2006-12-01 | 2006-12-01 | Kiln for cintering refractory material and method of cintering refractory material |
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| CN1948877A CN1948877A (en) | 2007-04-18 |
| CN100520262C true CN100520262C (en) | 2009-07-29 |
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| CNB2006101607801A Expired - Fee Related CN100520262C (en) | 2006-12-01 | 2006-12-01 | Kiln for cintering refractory material and method of cintering refractory material |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101255061B (en) * | 2008-04-03 | 2013-06-19 | 易志敏 | Daily-used porcelain dish and bowl product stacked firing method and device |
| CN103148679B (en) * | 2012-12-10 | 2015-11-11 | 龙文兴 | Portable temp-controlling and time-controlling plant specimen Quick drying instrument |
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| CN85106914A (en) * | 1985-09-13 | 1987-03-11 | 张邦苍 | Energy-saving kiln for producing blue brick and tile |
| CN86104210A (en) * | 1986-06-20 | 1987-12-30 | 沈阳市二三工厂 | Multi-chamber heat exchanging annealing energy-saving furnace |
| CN2031503U (en) * | 1988-03-31 | 1989-01-25 | 沈阳中捷友谊厂 | Double chamber heating furnace for forging with pre-heating and heating alternative circulating function |
| CN1100515A (en) * | 1994-08-06 | 1995-03-22 | 彭景尧 | Multi-chamber continuous annealing furnace |
| US5759027A (en) * | 1995-02-10 | 1998-06-02 | Norsk Hydro A.S. | Device for a ring section furnace |
| CN2489290Y (en) * | 2001-05-30 | 2002-05-01 | 刘建堂 | Forging heating furance in type of multi-chamber interactive use |
| EP1275924A1 (en) * | 2001-07-10 | 2003-01-15 | Alcan Technology & Management AG | Ring furnace |
-
2006
- 2006-12-01 CN CNB2006101607801A patent/CN100520262C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85106914A (en) * | 1985-09-13 | 1987-03-11 | 张邦苍 | Energy-saving kiln for producing blue brick and tile |
| CN86104210A (en) * | 1986-06-20 | 1987-12-30 | 沈阳市二三工厂 | Multi-chamber heat exchanging annealing energy-saving furnace |
| CN2031503U (en) * | 1988-03-31 | 1989-01-25 | 沈阳中捷友谊厂 | Double chamber heating furnace for forging with pre-heating and heating alternative circulating function |
| CN1100515A (en) * | 1994-08-06 | 1995-03-22 | 彭景尧 | Multi-chamber continuous annealing furnace |
| US5759027A (en) * | 1995-02-10 | 1998-06-02 | Norsk Hydro A.S. | Device for a ring section furnace |
| CN2489290Y (en) * | 2001-05-30 | 2002-05-01 | 刘建堂 | Forging heating furance in type of multi-chamber interactive use |
| EP1275924A1 (en) * | 2001-07-10 | 2003-01-15 | Alcan Technology & Management AG | Ring furnace |
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| CN1948877A (en) | 2007-04-18 |
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Granted publication date: 20090729 Termination date: 20100104 |