CN109402381B - Method for producing boiling furnace by blowing in and burning out - Google Patents
Method for producing boiling furnace by blowing in and burning out Download PDFInfo
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- CN109402381B CN109402381B CN201811459709.2A CN201811459709A CN109402381B CN 109402381 B CN109402381 B CN 109402381B CN 201811459709 A CN201811459709 A CN 201811459709A CN 109402381 B CN109402381 B CN 109402381B
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- 238000009835 boiling Methods 0.000 title claims abstract description 27
- 238000007664 blowing Methods 0.000 title claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 238000010438 heat treatment Methods 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims description 18
- 239000000428 dust Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 13
- 230000000630 rising effect Effects 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 6
- 239000000779 smoke Substances 0.000 claims description 6
- 230000000087 stabilizing effect Effects 0.000 claims description 6
- 239000007858 starting material Substances 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 2
- 238000010304 firing Methods 0.000 claims 1
- 239000012141 concentrate Substances 0.000 abstract description 7
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 238000006477 desulfuration reaction Methods 0.000 abstract description 2
- 230000023556 desulfurization Effects 0.000 abstract description 2
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 230000036632 reaction speed Effects 0.000 abstract description 2
- 238000003723 Smelting Methods 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000005083 Zinc sulfide Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- JQJCSZOEVBFDKO-UHFFFAOYSA-N lead zinc Chemical compound [Zn].[Pb] JQJCSZOEVBFDKO-UHFFFAOYSA-N 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000017105 transposition Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 229910052984 zinc sulfide Inorganic materials 0.000 description 1
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/02—Roasting processes
- C22B1/04—Blast roasting
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The invention discloses a method for producing a boiling furnace by blowing in and burning, which belongs to the technical field of boiling furnaces and comprises the following steps: a furnace laying stage, a heating stage and a furnace opening and feeding stage. The invention continuously summarizes experience, analyzes data and obtains specific furnace opening data according to actual furnace opening statistical data in multiple times of furnace opening and stopping. The technical scheme of the invention is used for multiple furnace opening of a 152 system, belongs to small-air and small-amount operation, has good stability, can ensure that the calcine calcined at the early stage fully reacts with the concentrate by means of air quantity, has high reaction speed and complete reaction, ensures that the desulfurization rate reaches 92.71 percent, and ensures that the productivity of the roasting furnace reaches 89.40 percent under the control of the air quantity and the feeding quantity. The invention achieves the purposes of stable and efficient operation, standard yield, energy conservation and emission reduction.
Description
Technical Field
The invention belongs to the technical field of fluidized bed furnaces, and particularly relates to a method for producing a fluidized bed furnace by blowing in and burning.
Background
The zinc sulfide concentrate is processed by a fluidized bed roaster in the northwest lead-zinc smelting plant, and the main product is desulfurized calcine used for leaching impurity removal and producing cathode zinc by electrodeposition. New construction 152m2The boiling roaster is the largest monomer boiling zinc smelting roaster in the world at present, and since the operation is carried out for more than one year, due to various reasons, a production stop accident occurs once and again, whether sintering or equipment failure causes furnace stop in a short period, the operation cycle becomes the largest bottleneck, the problem of the production cycle which is difficult to break brings difficulty to the calcine supply of a subsequent wet method system, the production reaches the standard, and the goals of increasing the yield and improving the efficiency cannot be realized.
The 152 roasting furnace runs for more than one year, the leaders of factories and workshops, the backbone of technical production and the like continuously search experiences, and summary data of concentrate proportioning, the capacity of a fluidized bed furnace, roasting process parameter optimization, impurity removal and the like are analyzed from one-time and one-time furnace starting and stopping operation, so that rules are searched, experiences are accumulated, although a certain data amount is mastered, detailed and deep analysis is lacked, and the maximum furnace operation experience is insufficient, and long-term running cannot be guaranteed.
Disclosure of Invention
The invention aims to provide a method for boiling furnace blow-in and burning production, which solves the problem that the production in the prior art cannot run stably for a long time.
The technical scheme adopted by the invention is as follows:
a boiling furnace blow-in and burning production method comprises the following steps:
step one, a furnace laying stage:
the smoke exhaust machine and the blower are started, the electric dust collection channel passes through the bypass flue at the moment and does not pass through the electric dust collection body, and the air blowing amount is controlled to 20000-25000Nm3Starting material returning system equipment, discharging from the seed bin, and paving the furnace, wherein when the average thickness of hearth bottom materials reaches more than 800mm, paving the furnace is finished; the thickness of the hearth bottom material is thicker, so that the situation that the seed calcine is too little during feeding can be prevented;
step two, a temperature rising stage:
A. a preheating stage:
the 1-2 rod oil gun is used for ignition once every 4h, and the air flow is controlled to be 20000-25000Nm3The secondary air quantity is controlled to be 15000-23000Nm3Controlling the temperature of a boiling layer and a discharge port not to exceed 350 ℃; ignition is carried out once every 4 hours, so that each point in the furnace can be preheated uniformly, and the temperature difference between each point is reduced; the control of the blast volume and the secondary air volume is beneficial to the rising of the calcine in the furnace and the sufficient combustion of the oil gun; because the stage is the preheating stage of the calcine and the furnace wall, the temperature of the calcine and the furnace wall is not suitable to be increased too fast or too high, the calcine can gradually reach a molten state due to the too high temperature, the blast cap at the furnace bottom is completely blocked, and the production is forced to stop. Too fast a temperature rise of the calcine will cause incomplete roasting, seems to reach the theoretical temperature, actually only the surface temperature is too high, and in addition, too fast a temperature rise will reduce the service life of the furnace wall.
B. Heating in the first stage:
adding the air into a 3-rod oil gun, and controlling the air blowing amount at 23000-32000Nm3H, secondary air quantity 15000-3Controlling the temperature of the discharge hole to stably rise to 520-550 ℃; in the temperature rising process, because the blast air brings a small amount of calcine with smaller granularity to subsequent dust collecting equipment, the pressure of the air box can be slowly reduced, and the temperature of a boiling layer gradually rises after being reduced; the blast air amount control in the stage is important, the air amount is too high, so that the calcine excessively enters a dust collecting system, the calcine amount in the furnace is reduced, the furnace cannot be normally opened, the air amount is too small, and the calcine cannot be completely boiledThe rising state is even less satisfactory for the heating of the calcine, so the selection of specific parameters is important. Besides the blast volume, the secondary air volume is strictly controlled, the secondary air mainly provides combustion-supporting, and the secondary air volume is adjusted timely according to the boiling condition in the furnace.
C. Heating in the second stage:
adding the air flow to a 4-rod oil gun, and controlling the air flow at 42000-45000Nm3The secondary air quantity is controlled to 20000 and 28000Nm3Controlling the temperature of the discharge hole to stably rise to 880-900 ℃ for preparation of feeding; in the stage, the oil guns are all opened, the positive pressure in the furnace is large, the air quantity is properly increased, the air quantity is combined with secondary air, and the temperature is controlled according to the boiling temperature rise condition.
Step three, blowing in the furnace and feeding:
when the calcine is burnt to bright red, the charging is started, and the opening degree of the suction valve of the blower is opened to ensure that the air quantity reaches 65000-3H, the feeding amount is 45-50t/h, and the oil pressure and the secondary air quantity in the step C in the step two are kept;
gradually turning off the oil gun when the temperature of each point in the furnace rises rapidly;
when the temperature of the feed inlet begins to drop, the feed amount is increased;
after the temperature of each point in the furnace is stable, the air quantity is increased to 82000 and 85000Nm3And/h, keeping the feeding amount at 45-50t/h, controlling the air-material ratio at 1700:1-1900:1, stabilizing the temperature of each point in the furnace at 900-920 ℃, only starting to rise the temperature of a discharge port, and finishing opening the furnace. In the feeding production stage, the amount of the concentrate entering the furnace is large, and according to the roasting theory, the air quantity is selected to be 85000Nm3Over h, the boiling area of the 152 boiling roaster is large, so that all the concentrate can reach a boiling state, partial sintering cannot be caused, the air volume cannot be too low, the air volume is too high, and the completely reacted concentrate is fed into a waste heat boiler, so that the load of subsequent equipment is too large.
Step one, in the furnace paving process, large blast air is blown for 5-10min at intervals of 1h, and the air volume is controlled at 40000-45000Nm 3/h. The purpose of large blast in the step is to ensure that the seed calcine can be uniformly distributed on the hearth, the thicknesses of all material layers are basically consistent, and the accuracy of the thickness of the bottom material is conveniently judged.
In the second step C, when the temperature of the discharge hole rises slowly, the oil pressure is increased by 1kg, and the opening of the secondary air valve is opened to increase the secondary air by 4000-3/h。
Compared with the prior art, the invention has the beneficial effects that:
the invention continuously summarizes experience, analyzes data and obtains specific furnace opening data according to actual furnace opening statistical data in multiple times of furnace opening and stopping. The technical scheme of the invention is used for multiple furnace opening of a 152 system, belongs to small-air and small-amount operation, has good stability, can ensure that the calcine calcined at the early stage fully reacts with the concentrate by means of air quantity, has high reaction speed and complete reaction, achieves the desulfurization rate of 92.71 percent, and achieves the capacity of 89.40 percent of the roasting furnace under the condition of controlling the air quantity and the feeding quantity. The invention achieves the purposes of stable and efficient operation, standard yield, energy conservation and emission reduction.
Detailed Description
The present invention will be further described with reference to the following embodiments.
A boiling furnace blow-in and burning production method comprises the following steps:
step one, a furnace laying stage:
the smoke exhaust machine and the blower are started, the electric dust collection channel passes through the bypass flue at the moment and does not pass through the electric dust collection body, and the air blowing amount is controlled to 20000-25000Nm3And h, starting material returning system equipment, laying the furnace by discharging the seed bin, finishing laying the furnace when the average thickness of the hearth bottom material reaches more than 800mm, blowing air for 5-10min at intervals of 1h in the furnace laying process, and controlling the air quantity to be 40000 and 45000Nm3/h；
Step two, a temperature rising stage:
A. a preheating stage:
the 1-2 rod oil gun is used for ignition once every 4h, and the air flow is controlled to be 20000-25000Nm3The secondary air quantity is controlled to be 15000-23000Nm3Controlling the temperature of a boiling layer and a discharge port not to exceed 350 ℃;
B. heating in the first stage:
adding the air into a 3-rod oil gun, and controlling the air blowing amount at 23000-32000Nm3H, secondary air quantity 15000-20000Nm3Controlling the temperature of the discharge hole to stably rise to 520-550 ℃;
C. heating in the second stage:
adding the air flow to a 4-rod oil gun, and controlling the air flow at 42000-45000Nm3The secondary air quantity is controlled to 20000 and 28000Nm3Controlling the temperature of the discharge hole to rise to 880-8000 Nm and 900 ℃ stably, increasing the oil pressure by 1kg when the temperature of the discharge hole rises slowly, and opening the opening of the secondary air valve to increase the secondary air by 4000-8000Nm3Preparing for feeding;
step three, blowing in the furnace and feeding:
when the calcine is burnt to bright red, the charging is started, and the opening degree of the suction valve of the blower is opened to ensure that the air quantity reaches 65000-3H, the feeding amount is 45-50t/h, and the oil pressure and the secondary air quantity in the step C in the step two are kept;
gradually turning off the oil gun when the temperature of each point in the furnace rises rapidly;
when the temperature of the feed inlet begins to drop, the feed amount is increased;
after the temperature of each point in the furnace is stable, the air quantity is increased to 82000 and 85000Nm3And/h, keeping the feeding amount at 45-50t/h, controlling the air-material ratio at 1700:1-1900:1, stabilizing the temperature of each point in the furnace at 900-920 ℃, only starting to rise the temperature of a discharge port, and finishing opening the furnace.
Example 1:
a boiling furnace blow-in and burning production method comprises the following steps:
step one, a furnace laying stage:
the smoke exhaust machine and the air blower are started, the electric dust collection device moves through the bypass flue at the moment and does not pass through the electric dust collection body, and the air blowing amount is controlled to be 20000Nm3And h, starting material returning system equipment, laying the furnace by discharging the seed bin, finishing laying the furnace when the thickness of the hearth bottom material averagely reaches 800mm, blowing air for 5min every 1h in the furnace laying process, and controlling the air quantity to 40000Nm3/h；
Step two, a temperature rising stage:
A. a preheating stage:
the 1-rod oil gun is used for ignition once every 4h, and the air blast quantity is controlled to be 20000Nm3/h、The secondary air quantity is controlled at 15000Nm3Controlling the temperature of a boiling layer and a discharge port not to exceed 350 ℃;
B. heating in the first stage:
adding 3 oil guns to the system, and controlling the air flow at 23000Nm3H, secondary air flow rate 15000Nm3Controlling the temperature of a discharge port to stably rise to 520 ℃;
C. heating in the second stage:
adding to 4-rod oil gun, controlling air blast amount at 42000Nm3The volume of the secondary air is controlled to be 20000 Nm/h3Controlling the temperature of the discharge opening to rise to 880 ℃ stably, increasing the oil pressure by 1kg when the temperature of the discharge opening rises slowly, and opening the secondary air valve to increase the secondary air by 4000Nm3Preparing for feeding;
step three, blowing in the furnace and feeding:
when the calcine is burnt to bright red, the material is fed, and the opening of the air suction valve of the air blower is opened to make the air quantity reach 65000Nm3H, the feeding amount is 45t/h, and the oil pressure and the secondary air quantity in the step C in the step two are kept;
gradually turning off the oil gun when the temperature of each point in the furnace rises rapidly;
when the temperature of the feed inlet begins to drop, the feed amount is increased;
when the temperature of each point in the furnace is stable, the air quantity is increased to 82000Nm3And h, keeping the feeding amount at 45t/h, controlling the air-material ratio at 1700:1, stabilizing the temperature of each point in the furnace at 900 ℃, only starting to rise the temperature of a discharge port, and finishing opening the furnace.
Example 2:
a boiling furnace blow-in and burning production method comprises the following steps:
step one, a furnace laying stage:
starting the smoke exhaust machine and the blower, leading the electric dust collection to flow through the bypass flue at the moment without passing through the electric dust collection body, and controlling the air blast amount to be 25000Nm3And h, starting material returning system equipment, laying the furnace by discharging the seed bin, finishing laying the furnace when the average thickness of the hearth bottom material reaches more than 1200mm, blowing air for 10min at intervals of 1h in the furnace laying process, and controlling the air quantity to be 45000Nm3/h；
Step two, a temperature rising stage:
A. a preheating stage:
the oil gun is used for ignition once every 4h, and the air blast quantity is controlled to be 25000Nm3The volume of the secondary air is controlled to be 23000Nm3Controlling the temperature of a boiling layer and a discharge port not to exceed 350 ℃;
B. heating in the first stage:
adding 3 oil guns to the system, and controlling the blast quantity at 32000Nm3H, secondary air volume 20000Nm3Controlling the temperature of a discharge hole to stably rise to 550 ℃;
C. heating in the second stage:
adding to 4-rod oil gun, the blast volume is controlled to 45000Nm3The volume of the secondary air is controlled to 28000Nm3H, controlling the temperature of the discharge opening to stably rise to 900 ℃, increasing the oil pressure by 1kg when the temperature of the discharge opening rises slowly, and opening the secondary air valve to increase the secondary air by 8000Nm3Preparing for feeding;
step three, blowing in the furnace and feeding:
when the calcine is burnt to bright red, the material is fed, and the opening of the air suction valve of the air blower is opened to make the air quantity reach 74000Nm3The feeding amount is 50t/h, and the oil pressure and the secondary air volume in the step C in the step two are kept;
gradually turning off the oil gun when the temperature of each point in the furnace rises rapidly;
when the temperature of the feed inlet begins to drop, the feed amount is increased;
when the temperature of each point in the furnace is stable, the air quantity is increased to 85000Nm3And h, keeping the feeding amount at 50t/h, controlling the air-material ratio at 1900:1, stabilizing the temperature of each point in the furnace at 920 ℃, only starting to rise the temperature of a discharge port, and finishing opening the furnace.
Example 3:
a boiling furnace blow-in and burning production method comprises the following steps:
step one, a furnace laying stage:
starting the smoke exhaust machine and the air blower, leading the electric dust collection to flow through a bypass flue at the moment without passing through the electric dust collection body, and controlling the air blowing amount to be 23000Nm3And h, starting material returning system equipment, laying the furnace by discharging the seed bin, finishing laying the furnace when the average thickness of the hearth bottom material reaches more than 1000mm, blowing air for 8min at intervals of 1h in the furnace laying process, and controlling the air quantity to be 43000Nm3/h；
Step two, a temperature rising stage:
A. a preheating stage:
the oil gun is used for ignition once every 4h by transposition, and the air blast quantity is controlled to be 22000Nm3The volume of the secondary air is controlled to be 20000 Nm/h3Controlling the temperature of a boiling layer and a discharge port not to exceed 350 ℃;
B. heating in the first stage:
adding 3 oil guns to the system, and controlling the blast volume at 28000Nm3H, secondary air volume 18000Nm3Controlling the temperature of a discharge port to stably rise to 530 ℃;
C. heating in the second stage:
the air blast quantity is controlled to be 43000Nm by adding the air blast quantity to a 4-rod oil gun3The volume of the secondary air is controlled to be 25000Nm3H, controlling the temperature of the discharge opening to rise to 890 ℃, increasing the oil pressure by 1kg when the temperature of the discharge opening rises slowly, and opening the opening of a secondary air valve to increase the secondary air by 6000Nm3Preparing for feeding;
step three, blowing in the furnace and feeding:
when the calcine is burnt to bright red, the material is fed, and the opening of the air suction valve of the blower is opened to make the air quantity reach 70000Nm3H, the feeding amount is 48t/h, and the oil pressure and the secondary air quantity in the step C in the step two are kept;
gradually turning off the oil gun when the temperature of each point in the furnace rises rapidly;
when the temperature of the feed inlet begins to drop, the feed amount is increased;
when the temperature of each point in the furnace is stable, the air quantity is increased to 83000Nm3And h, keeping the feeding amount at 48t/h, controlling the air-material ratio at 1800:1, stabilizing the temperature of each point in the furnace at 910 ℃, only starting to rise the temperature of a discharge port, and finishing opening the furnace.
Claims (3)
1. A method for producing a boiling furnace by opening and burning is characterized by comprising the following steps:
step one, a furnace laying stage:
the smoke exhaust machine and the blower are started, the electric dust collection channel passes through the bypass flue at the moment and does not pass through the electric dust collection body, and the air blowing amount is controlled to 20000-25000Nm3Starting material returning system equipment, discharging from the seed bin, and paving the furnace, wherein when the average thickness of hearth bottom materials reaches more than 800mm, paving the furnace is finished;
step two, a temperature rising stage:
A. a preheating stage:
the 1-2 rod oil gun is used for ignition once every 4h, and the air flow is controlled to be 20000-25000Nm3The secondary air quantity is controlled to be 15000-23000Nm3Controlling the temperature of a boiling layer and a discharge port not to exceed 350 ℃;
B. heating in the first stage:
increasing the temperature to a 3-rod oil gun, controlling the air flow at 23000-32000Nm3/h and the secondary air flow at 15000-20000Nm3/h, and controlling the temperature of the discharge hole to stably rise to 520-550 ℃;
C. heating in the second stage:
adding the air flow to a 4-rod oil gun, and controlling the air flow at 42000-45000Nm3The secondary air quantity is controlled to 20000 and 28000Nm3Controlling the temperature of the discharge hole to stably rise to 880-900 ℃ for preparation of feeding;
step three, blowing in the furnace and feeding:
when the calcine is burnt to bright red, the charging is started, and the opening degree of the suction valve of the blower is opened to ensure that the air quantity reaches 65000-3H, the feeding amount is 45-50t/h, and the oil pressure and the secondary air quantity in the step C in the step two are kept; gradually turning off the oil gun when the temperature of each point in the furnace rises rapidly; when the temperature of the feed inlet begins to drop, the feed amount is increased; after the temperature of each point in the furnace is stable, the air quantity is increased to 82000 and 85000Nm3And/h, keeping the feeding amount at 45-50t/h, controlling the air-material ratio at 1700:1-1900:1, stabilizing the temperature of each point in the furnace at 900-920 ℃, only starting to rise the temperature of a discharge port, and finishing opening the furnace.
2. Method for boiling furnace blow-in and firing production of claim 1The method is characterized in that: step one, in the furnace paving process, large blast is carried out for 5-10min at intervals of 1h, and the air quantity is controlled to be 40000 and 45000Nm3/h。
3. The method for boiling furnace blow-in and fire-out production of claim 1 or 2, wherein: in the second step C, when the temperature of the discharge hole rises slowly, the oil pressure is increased by 1kg, and the opening of the secondary air valve is opened to increase the secondary air by 4000-3/h。
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811459709.2A CN109402381B (en) | 2018-11-30 | 2018-11-30 | Method for producing boiling furnace by blowing in and burning out |
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| CN201811459709.2A CN109402381B (en) | 2018-11-30 | 2018-11-30 | Method for producing boiling furnace by blowing in and burning out |
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| CN109402381B true CN109402381B (en) | 2020-08-14 |
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| CN113684364A (en) * | 2021-08-27 | 2021-11-23 | 新疆紫金有色金属有限公司 | Fluidized bed furnace roasting treatment method for fine-grained high-silicon low-iron zinc concentrate |
| CN114737048A (en) * | 2022-04-20 | 2022-07-12 | 白银有色集团股份有限公司 | Opening method of roasting furnace |
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| JPH08269884A (en) * | 1995-04-04 | 1996-10-15 | Mitsubishi Heavy Ind Ltd | Boiler furnace for recovering soda |
| CN101139654A (en) * | 2007-07-26 | 2008-03-12 | 曹传东 | Method for producing fine iron sand powder by using ferro-sulphur ore as raw material and equipment thereof |
| CN101144121A (en) * | 2007-09-26 | 2008-03-19 | 广西铜业有限公司 | Solid blowing in method for fused bath smelting |
| CN102745651A (en) * | 2012-07-17 | 2012-10-24 | 威海恒邦化工有限公司 | Energy-saving and environmental-friendly method for heating fluidized bed furnace |
| CN106379866A (en) * | 2016-08-30 | 2017-02-08 | 襄阳泽东化工集团有限公司 | Energy-saving eco-friendly ignition method of pyrite-based acid making fluidized bed furnace |
| CN107022680A (en) * | 2017-03-20 | 2017-08-08 | 云南驰宏锌锗股份有限公司 | A kind of all cold charge blow-in method with waste heat boiler fuming furnace |
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2018
- 2018-11-30 CN CN201811459709.2A patent/CN109402381B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08269884A (en) * | 1995-04-04 | 1996-10-15 | Mitsubishi Heavy Ind Ltd | Boiler furnace for recovering soda |
| CN101139654A (en) * | 2007-07-26 | 2008-03-12 | 曹传东 | Method for producing fine iron sand powder by using ferro-sulphur ore as raw material and equipment thereof |
| CN101144121A (en) * | 2007-09-26 | 2008-03-19 | 广西铜业有限公司 | Solid blowing in method for fused bath smelting |
| CN102745651A (en) * | 2012-07-17 | 2012-10-24 | 威海恒邦化工有限公司 | Energy-saving and environmental-friendly method for heating fluidized bed furnace |
| CN106379866A (en) * | 2016-08-30 | 2017-02-08 | 襄阳泽东化工集团有限公司 | Energy-saving eco-friendly ignition method of pyrite-based acid making fluidized bed furnace |
| CN107022680A (en) * | 2017-03-20 | 2017-08-08 | 云南驰宏锌锗股份有限公司 | A kind of all cold charge blow-in method with waste heat boiler fuming furnace |
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