CN106045345A - Dumbbell-shaped dead burned magnesia roasting kiln - Google Patents
Dumbbell-shaped dead burned magnesia roasting kiln Download PDFInfo
- Publication number
- CN106045345A CN106045345A CN201610643754.8A CN201610643754A CN106045345A CN 106045345 A CN106045345 A CN 106045345A CN 201610643754 A CN201610643754 A CN 201610643754A CN 106045345 A CN106045345 A CN 106045345A
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- China
- Prior art keywords
- section
- bell
- dead burned
- burned magnesia
- dumbbell
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2/00—Lime, magnesia or dolomite
- C04B2/10—Preheating, burning calcining or cooling
- C04B2/12—Preheating, burning calcining or cooling in shaft or vertical furnaces
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/40—Production or processing of lime, e.g. limestone regeneration of lime in pulp and sugar mills
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
- Furnace Details (AREA)
Abstract
The invention discloses a dumbbell-shaped dead burned magnesia roasting kiln, which comprises a feeding device, a distributing device, a kiln body and a discharge device. The kiln body is dumbbell-shaped and comprises an upper bell preheating section, a middle combustion section and a lower bell cooling section. Diameter of the upper bell preheating section is greater than diameter of the middle combustion section, and diameter of the lower bell cooling section is greater than diameter of the middle combustion section. The invention has the following advantages: the dead burned magnesia roasting kiln structure is dumbbell-shaped and then adapts to thermal characteristics of the technological process; the kiln body is more than 30 m high and the preheating and cooling sections are high, and then energy is saved by more than 20%; exhaust-gas outlet temperature is below 150 DEG C, thus being convenient for subsequent exhaust gas treatment; magnesia discharging temperature is below 120 DEG C, thus being convenient for discharging; the kiln body is large and has high yield, and annual output of dead burned magnesia is more than 80,000 tons, which is more than 8 times higher than output of a traditional shaft kiln.
Description
Technical field
The present invention relates to the device of a kind of dead burned magnesia, particularly relate to a kind of dumbbell shape dead burned magnesia roasting kiln,
Belong to magnesium oxide roasting kiln field.
Background technology
Magnesite belongs to country's grand strategy resource.China's magnesite reserves account for the 24% of world saving, occupy the world first
Position.Although China is magnesite resource and magnesian big producing country, but owing to blindness for many years is exploited, high-grade magnesite
Stone is the deficientest, and dead burned magnesia produces and remains in the original extensive mode of production, and manufacturing enterprise is simply equipped, and lacks technology
Standard, thermal regulation and rule of operation, the most by rule of thumb manual operation, labor intensity is big, and environmental pollution is serious, and product quality is not
Stable, added value of product is low, and resource can not get comprehensive utilization.The problem basic reason that China's magnesite industry exists is technology and dress
Standby backwardness, has become as the technical bottleneck of restriction China dead burned magnesia development.
China's dead burned magnesia produces equipment and lags far behind developed country, also lags far behind domestic aluminium oxide, cement
Deng other inorganic goods industries.China's dead burned magnesia production technology is original, continues to use traditional shaft furnace always and produces.This shaft furnace
Body of heater is little, and maximum height is less than 18m, and the upper and lower diameter of body of heater is identical, yields poorly, and annual production is less than 10,000 tons；Open life
Producing, energy consumption is big, pollutes the most serious；Barrel shaped structure, is unfavorable for heat radiation in magnesium oxide dropping process, and viscous stove knot stone roller is serious；Cloth
Expecting uneven, Ore separates with coal cinder, affects product quality；Artificial discharging, labor intensity is very big, and working environment is the difficultest
Bitter；Automaticity is low, produces original, seriously polluted.
Summary of the invention
It is an object of the invention to overcome the weak points such as body of heater of the prior art is little, energy consumption big, viscous stove knot stone roller is serious,
And a kind of dumb-bell shape dead burned magnesia roasting kiln being made up of upper bell preheating section, intermediate combustion section and lower bell cooling section is provided,
Upper bell is tapered, adapts to the reduction in bulk that Ore preheating dehydration causes, reclaims atmospheric heat；Lower bell expands, and prevents magnesium oxide from cooling down
During viscous stove knot stone roller, reclaim magnesium oxide heat；Actual combustion fragment position is controlled by regulation air quantity and discharging speed；Stove
Height, more than 30m, substantially increases yield and efficiency, greatly reduces energy consumption, it is achieved that efficient, the low consumption of dead burned magnesia, big
Large-scale production.
This dumbbell shape dead burned magnesia roasting kiln, feeding device is connected with distribution device, distribution device is positioned at body of heater
Top, drawing mechanism be arranged on the lower section of body of heater, body of heater is dumb-bell shape, body of heater include bell preheating section, intermediate combustion section, under
Bell cooling section, upper bell preheating section diameter is more than intermediate combustion section, and lower bell cooling section diameter is more than intermediate combustion section.
The invention has the advantages that:
1. dead burned magnesia roasting kiln structure is dumb-bell shape, has adapted to thermal technology's feature of technical process；
2. body of heater is up to more than 30m, and preheating is high with cooling section, and energy-conservation more than 25%；
3. waste gas outlet temperature less than 150 DEG C, it is simple to follow-up exhaust-gas treatment；
4. magnesium oxide drop temperature less than 120 DEG C, it is simple to discharging；
5. body of heater is big, and yield is high, produces dead burned magnesia per year more than 80,000 tons, is more than 8 times of tradition shaft furnace yield.
Accompanying drawing explanation
Fig. 1 is the structural representation of dumbbell shape dead burned magnesia roasting kiln.
Labelling in figure: bell cooling section, 6-under 1-body of heater, 2-distribution device, 3-upper bell preheating section, 4-intermediate combustion section, 5-
Drawing mechanism, 7-feeding device.
Detailed description of the invention
Below in conjunction with the accompanying drawings dumbbell shape dead burned magnesia roasting kiln is further described.
This dumbbell shape dead burned magnesia roasting kiln, feeding device 7 is connected with distribution device 2, distribution device 2 is positioned at stove
It is dumb-bell shape that the top of body 1, drawing mechanism 6 are arranged on the lower section body of heater 1 of body of heater 1, and body of heater 1 includes bell preheating section 3, middle combustion
Burn bell preheating section 3 diameter on section 4, lower bell cooling section 5 and be more than intermediate combustion section more than intermediate combustion section 4, lower bell cooling section 5 diameter
4。
This dumb-bell shape dead burned magnesia roasting kiln, body of heater 1 is dumb-bell shape, upper bell preheating section 3 and lower bell cooling section 5
Greatly, intermediate combustion section 4 is little；Ore and fuel mixture material first pass through feeding device 1 and join distribution device 2, distribution device 2
Evenly into bell preheating section 3 on body of heater, contacting heat-shift, preheating material with the high-temp waste gas through burning zone, cooling is useless
Gas, reclaims heat；Material bell preheating section 3 on stove enters intermediate combustion section 4 roasting；Magnesium oxide after roasting enters under body of heater
Bell cooling section 5, high-temperature oxydation magnesium contacts heat-shift with fresh air, and magnesium oxide cools down, atmosphere temperature rising；The magnesium oxide warp of cooling
Cross drawing mechanism 6 discharging.
The present invention relates to magnesium oxide roasting kiln field, specifically change dead burned magnesia roasting shaft kiln existing short directly
Core structure and the shortcoming that yield is little, efficiency is low, energy consumption is big, define by upper bell preheating section 3, intermediate combustion section 4 and lower bell cold
But the dumb-bell shape dead burned magnesia roasting kiln that section 5 is constituted, upper bell is tapered, adapts to the reduction in bulk that Ore preheating dehydration causes,
Reclaim atmospheric heat；Lower bell expands, and prevents the viscous stove knot stone roller in magnesium oxide cooling procedure, reclaims the heat of magnesium oxide；By adjusting
Joint air quantity and discharging speed control Actual combustion fragment position；Stove height, more than 30m, substantially increases yield and efficiency, is substantially reduced
Energy consumption, it is achieved that efficient, the low consumption of dead burned magnesia, large-scale production.
Fig. 1 is embodiment schematic diagram, and in the present embodiment, body of heater 1 is dumb-bell shape, greatly, middle the least；Ore and fuel mix
Compound material first passes through distribution device 2 evenly into upper bell preheating section 3, contacts exchanged heat with the high-temp waste gas through burning zone
Amount, preheating material, waste gas of lowering the temperature, reclaims heat；In material warm, the magnesium carbonate in Ore resolves into magnesium oxide and two
Carbon oxide gas, volume of material reduces, and upper bell preheating section 3 is gradually reduced, and has adapted to the feature of this technique；Material is through upper bell
Preheating section 3 enters intermediate combustion section 4, fuel combustion, and temperature reaches 1700 DEG C；At the top of intermediate combustion section 4, oxygen depletion
High-temp waste gas enters bell preheating section 3 on body of heater, and in the bottom of intermediate combustion section 4, magnesium oxide enters bell cooling section 5 under body of heater, high
Temperature magnesium oxide contacts heat-shift with fresh air, and magnesium oxide is cooled to less than 120 DEG C, more than atmosphere temperature rising to 800 DEG C；Lower bell
Cool down 5 sections of transverse section to expand, alleviate the extruding of magnesium oxide, efficiently avoid magnesium oxide and glue stove knot stone roller；The magnesium oxide of cooling
Through drawing mechanism 6 discharging.
The present embodiment kiln height 40m, upper bell preheating section top diameter 3375mm, interlude diameter 2900mm, lower bell cools down
Section diameter 3200mm, produces dead burned magnesia per year more than 80,000 tons, and actual energy-conservation 28.6%.
Upper bell preheating section 3 is tapered, adapts to the reduction in bulk that Ore preheating dehydration causes, reclaims atmospheric heat；Lower bell cools down
Section 5 expands, and prevents the viscous stove knot stone roller in magnesium oxide cooling procedure, reclaims the heat of magnesium oxide；By regulation air quantity and discharging speed
Degree controls Actual combustion fragment position；Stove height, more than 30m, substantially increases yield and efficiency, greatly reduces energy consumption, it is achieved that weight
Efficient, the low consumption of burned magnesium oxide, large-scale production.
Claims (1)
1. a dumbbell shape dead burned magnesia roasting kiln, is connected with distribution device (2) including feeding device (7), distribution device
(2) be positioned at the top of body of heater (1), drawing mechanism (6) is arranged on the lower section of body of heater (1), it is characterised in that: body of heater (1) is dumbbell
Shape, body of heater (1) includes that bell preheating section (3), intermediate combustion section (4), lower bell cooling section (5), upper bell preheating section (3) diameter are more than
Intermediate combustion section (4), lower bell cooling section (5) diameter is more than intermediate combustion section (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610643754.8A CN106045345A (en) | 2016-08-08 | 2016-08-08 | Dumbbell-shaped dead burned magnesia roasting kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610643754.8A CN106045345A (en) | 2016-08-08 | 2016-08-08 | Dumbbell-shaped dead burned magnesia roasting kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106045345A true CN106045345A (en) | 2016-10-26 |
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ID=57480975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610643754.8A Pending CN106045345A (en) | 2016-08-08 | 2016-08-08 | Dumbbell-shaped dead burned magnesia roasting kiln |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106915909A (en) * | 2017-05-03 | 2017-07-04 | 辽宁科技大学 | The device and method of knot stone roller in a kind of automatic pulverizing dead burned magnesia shaft furnace |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201731752U (en) * | 2010-05-31 | 2011-02-02 | 陈久斌 | Shaft kiln |
| CN202945167U (en) * | 2012-11-07 | 2013-05-22 | 广东韶钢松山股份有限公司 | Working lining structure of gas-burned lime shaft kiln |
| CN205974281U (en) * | 2016-08-08 | 2017-02-22 | 辽宁信威环保科技有限公司 | Dumbbell shape heavily burns magnesium oxide calcination kiln |
-
2016
- 2016-08-08 CN CN201610643754.8A patent/CN106045345A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201731752U (en) * | 2010-05-31 | 2011-02-02 | 陈久斌 | Shaft kiln |
| CN202945167U (en) * | 2012-11-07 | 2013-05-22 | 广东韶钢松山股份有限公司 | Working lining structure of gas-burned lime shaft kiln |
| CN205974281U (en) * | 2016-08-08 | 2017-02-22 | 辽宁信威环保科技有限公司 | Dumbbell shape heavily burns magnesium oxide calcination kiln |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106915909A (en) * | 2017-05-03 | 2017-07-04 | 辽宁科技大学 | The device and method of knot stone roller in a kind of automatic pulverizing dead burned magnesia shaft furnace |
| CN106915909B (en) * | 2017-05-03 | 2019-08-02 | 辽宁科技大学 | A kind of device and method of the interior knot stone roller of automatic pulverizing dead burned magnesia shaft furnace |
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| C06 | Publication | ||
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Qu Dianli Inventor after: Li Zhijian Inventor after: Shi Shuwei Inventor after: Wu Feng Inventor after: Shi Zhe Inventor after: Guo Yuxiang Inventor after: Pan Zhenghua Inventor after: Chen Fuli Inventor after: Gang Zhanku Inventor before: Chen Fuli Inventor before: Gang Zhanku Inventor before: Shi Shuwei |
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| CB03 | Change of inventor or designer information | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20180424 Address after: 114051 No. 185 Qianshan Middle Road, hi tech Zone, Liaoning, Anshan Applicant after: Liaoning Science and Technology Univ. Applicant after: Liaoning Xinwei Environmental Protection Technology Co. Ltd. Applicant after: Liaoning Fenghua Industrial Co., Ltd. Address before: 115105, Yingkou, Liaoning province Dashiqiao City Tuen Mun Town, Tong Village Applicant before: Liaoning Xinwei Environmental Protection Technology Co. Ltd. |
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Application publication date: 20161026 |
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| RJ01 | Rejection of invention patent application after publication |