CN101987783B - Method for producing active pulverized lime by utilizing coal gas to calcine limestone through suspended state pre-heating decomposing furnace - Google Patents
Method for producing active pulverized lime by utilizing coal gas to calcine limestone through suspended state pre-heating decomposing furnace Download PDFInfo
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- CN101987783B CN101987783B CN2010102643869A CN201010264386A CN101987783B CN 101987783 B CN101987783 B CN 101987783B CN 2010102643869 A CN2010102643869 A CN 2010102643869A CN 201010264386 A CN201010264386 A CN 201010264386A CN 101987783 B CN101987783 B CN 101987783B
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- 235000019738 Limestone Nutrition 0.000 title claims abstract description 68
- 239000006028 limestone Substances 0.000 title claims abstract description 68
- 239000003034 coal gas Substances 0.000 title claims abstract description 48
- 235000008733 Citrus aurantifolia Nutrition 0.000 title claims abstract description 29
- 235000011941 Tilia x europaea Nutrition 0.000 title claims abstract description 29
- 239000004571 lime Substances 0.000 title claims abstract description 29
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 238000010438 heat treatment Methods 0.000 title abstract description 9
- 239000000843 powder Substances 0.000 claims abstract description 81
- 238000000034 method Methods 0.000 claims abstract description 32
- 238000002485 combustion reaction Methods 0.000 claims abstract description 21
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 15
- 238000001354 calcination Methods 0.000 claims abstract description 14
- 238000001816 cooling Methods 0.000 claims abstract description 8
- 230000000694 effects Effects 0.000 claims abstract description 6
- 238000000354 decomposition reaction Methods 0.000 claims description 26
- 239000000725 suspension Substances 0.000 claims description 18
- 238000002156 mixing Methods 0.000 claims description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 239000000571 coke Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 238000007664 blowing Methods 0.000 claims description 3
- 239000000047 product Substances 0.000 claims description 3
- 239000006227 byproduct Substances 0.000 claims description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 abstract description 9
- 239000000446 fuel Substances 0.000 abstract description 8
- 235000012255 calcium oxide Nutrition 0.000 abstract description 4
- 239000000292 calcium oxide Substances 0.000 abstract description 4
- 239000003245 coal Substances 0.000 abstract description 3
- 239000004566 building material Substances 0.000 abstract 1
- 238000010304 firing Methods 0.000 abstract 1
- 238000005272 metallurgy Methods 0.000 abstract 1
- 238000009628 steelmaking Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 38
- 238000005516 engineering process Methods 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 229910052791 calcium Inorganic materials 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- 239000004568 cement Substances 0.000 description 3
- 239000002817 coal dust Substances 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000010310 metallurgical process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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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Abstract
The invention relates to a method for producing active pulverized lime by utilizing coal gas to calcine limestone through a suspended state pre-heating decomposing furnace, which belongs to the field of environment protection production of building materials. The method comprises the voltage stabilizing and conveying process of coal gas, the combustion heating process of the coal gas in a decomposing furnace for sufficiently combusting the coal gas in the suspended state pre-heating decomposing furnace to obtain the active quicklime powder as staflux in the lime calcining production, and the process for cooling the lime by a grate type cooler. Coke-oven coal gas, blast furnace coal gas, converter coal gas and mixed coal gas in the metallurgy production process are respectively adopted as fuel for replacing the coal powder in the traditional process for calcining and decomposing the lime powder. The method solves the problem of environment pollution caused by coal firing, improves the utilization rate of the excessive coal gas generated during steel making, reduces the outwards discharge of the coal gas, simultaneously improves the production efficiency and the heat efficiency of the lime calcination, and improves the activity of the lime.
Description
Technical field
The present invention relates to a kind of is fuel with surplus gas in the Iron and Steel Production, utilize to produce the method that the suspended state predecomposition furnace calcined limestone of cement is produced active unslaked lime, belongs to the environmental protection production field of material of construction.
Background technology
The technology of the active lime powder of China's limestone calcination production at present mainly is rotary kiln and shaft furnace: rotary kiln is used very wide in unslaked lime is produced as a kind of sophisticated calcining process; But front-end investment is big; Higher to operator, maintainer and technician's competency profiling; Tighter to raw material and quality of fuel, granularity requirements, and power consumption is higher, causes the production cost of unslaked lime higher; Shaft furnace is the most traditional technology in the calcined limestone technology, but its shortcoming is: 1, Wingdale heats under bulk and decomposes, and heat transfer and mass transfer velocity are slow, and heating and resolving time are long, and production efficiency is low; 2, production temperature is high, and soaking time is long, and thermo-efficiency is low, and hear rate is high; 3, the SO that generates
2Big with the NOx amount, environmental pollution is serious; 4, non-complete combustion of fuel is serious, produces a large amount of CO, causes waste of fuel; 5, generate the temperature height, the unslaked lime structure is tight, poor activity, and quality stability is poor.
In metallurgical process, be accompanied by and produce a large amount of coal gas, comprise coke-oven gas, blast furnace gas, coal gas of converter, their major parts are used to heat various stoves (kiln) and the boiler in the metallurgical process; But along with the continuous expansion of Iron and Steel Production scale and the progress of power-saving technology, all there is the coal gas problem of having more than needed in most steel mills, and many enterprises are owing to restricted by regional environment; Surplus gas does not have the better utilised direction; All diffuse, this had both wasted the energy, also environment had been caused pollution.Therefore seeking effective way makes full use of coal gas and has become the industry problem demanding prompt solution.
Summary of the invention
To the deficiency of prior art, the present invention provides a kind of and utilizes the coal gas calcined limestone to produce the method for quickened lime stone flour at the suspended state preheating decomposition furnace.
Summary of the invention
Suspended state preheating predecomposition furnace is mainly used in production cement, and it comprises suspended preheater and decomposing furnace, and described suspended preheater comprises the multistage cyclone tube, and decomposing furnace comprises combustion decomposition chamber and mixing section.Material contacts with the hot gas flow suspension in preheater, and heat transfer area increases by thousand times in rotary kiln, and heat transfer rate increases greatly, therefore in kiln, needs 1 hour pre-heating temperature elevation and decomposition course approximately, in suspended preheater, can accomplish in about about 30 seconds.The exothermic process of fuel combustion and the endothermic process of decomposition of limestone are carried out extremely rapidly under suspended state simultaneously, and the production efficiency of limestone calcination is significantly improved.
Limestone powder gets into decomposing furnace through suspension preheating system heating back, and moves downward along the combustion chamber with the eddy flow state in the combustion decomposition chamber in decomposing furnace; Indoor in combustion decomposition, gas-fired produces thermal-flame heating and calcining limestone powder, and it is decomposed, and the raw material after the decomposition gets into mixing section along oblique flue.Warm air after the heating gets into mixing section along oblique flue, further decomposes with the Wingdale powder that does not decompose fully disperseing, and the interior limestone powder decomposition temperature of mixing section is controlled in the OK range; Calcium lime powder after the decomposition gets into the grate cooler operation through the five-stage whirlwind tube, finally accomplishes the preparation of active lime powder.
Detailed Description Of The Invention
A kind of method of utilizing the coal gas calcined limestone to produce active lime powder, step is following:
1) Wingdale is worn into limestone powder;
2) high pressure positive blower that starts one-level whirlwind tube exit as limestone powder the suspension propulsion source; The coal gas that pressure surge in the steel manufacture process is bigger is through gas pipeline transportation service to coal gas voltage stabilizing cabinet; Coal gas is through the voltage stabilizing of coal gas voltage stabilizing cabinet, behind by-pass valve control adjustment gas flow; Send into the burning of combustion decomposition chamber through gas line, burning forms thermal-flame Wingdale is carried out calcining and decomposing;
3) feeding mouth of limestone powder from secondary whirlwind tube added, the streams that limestone powder forms gets into one-level whirlwind tube with the air-flow of secondary whirlwind tube;
4) limestone powder falls into three grades of whirlwind tubes simultaneously at one-level whirlwind tube inner suspension and be heated, and limestone powder gets into secondary whirlwind tube with the air-flow of three grades of whirlwind tubes;
5) limestone powder falls into the Category Four cyclone tube simultaneously at secondary whirlwind tube inner suspension and be heated, and limestone powder gets into three grades of whirlwind tubes with the air-flow of Category Four cyclone tube;
6) limestone powder falls into the five-stage whirlwind tube simultaneously at three grades of whirlwind tube inner suspensions and be heated, and limestone powder gets into the Category Four cyclone tube with the air-flow of five-stage whirlwind tube;
7) limestone powder is at Category Four cyclone tube inner suspension and be heated; Fall into the combustion decomposition chamber simultaneously; Move downward along the combustion decomposition chamber with the eddy flow state, gas-fired thermal-flame is calcined with part limestone powder and is decomposed, and the limestone powder edge of not decomposing fully tiltedly flue gets into mixing section; The cooling air of blowing over grate cooler becomes warm air, and described warm air gets into mixing section, and the limestone powder that does not decompose is fully further decomposed;
8) limestone powder gets in the five-stage whirlwind tube with air-flow, in the five-stage whirlwind tube, resolves into active lime powder fully, and active lime powder falls into the grate cooler cooling, gets the active lime powder finished product.
Preferably, the limestone powder described in the step 1) is that fineness is that 75-85 μ m tails over the limestone powder into 11-13%.
Preferably, the coal gas step 2) is blast furnace gas, coal gas of converter, coke-oven gas and the high coke mixed gas of by-product in the steel manufacture process.
Preferably, step 2) is the gas flow of the suitable heat of 29000～30000kJ/s through by-pass valve control adjustment gas flow.
Preferably, the coal gas voltage stabilizing cabinet flow step 2) is 2500Nm
3/ h, pressure are 1.5MPa.
Preferably, the temperature in the mixing section described in the step 7) is 900-1100 ℃.
Preferably, step 1)-8) in, the sectional wind velocity of described whirlwind tubes at different levels is one-level whirlwind tube: 3～4m/s respectively; Secondary whirlwind tube: 4.8～5.5m/s; Three grades of whirlwind tube: 4.8～5.5m/s; Category Four cyclone tube: 5～6m/s; Five-stage whirlwind tube: 5～6m/s.
Preferably, the formed airshed of the high pressure positive blower step 2) is 3000-3500m
3/ min.
Preferably, the activity of the active lime powder described in the step 8) is 320-380ml.
Preferably, step 1)-8) in, described material stops 25～35s altogether in 1～5 grade of whirlwind tube, in combustion decomposition chamber and mixing section, stop 8-10s altogether.
Technical characterstic of the present invention is: substitute coal dust as thermal source with coal gas; Set up coal gas voltage stabilizing cabinet, regulating valve, gas burner and corresponding gas line; Coal gas gets into fully to burn in the combustion chamber through said apparatus and produces high heat, makes Wingdale powder particle under suspended state, carry out calcining and decomposing through adding warm air.
With existing be that the limestone calcination technology of fuel is compared with the coal dust, unusual effect of the present invention is:
1, can coal gas resource more than needed in the steel manufacture process fully be applied to calcined limestone produces in the technology of active calcium lime powder; Substituted coal dust; Reduce the coal gas discharging on the one hand; Improve energy utilization rate, solved the coal-fired problem of environmental pollution that causes on the other hand, reach the purpose of energy-conservation, reduction of discharging and environmental protection.
2, gas-fired is abundant, and the Wingdale powder is carried out calcining and decomposing under suspended state, conducts heat rapidly, and thermo-efficiency is high, and energy consumption is low.
3, the active calcium lime powder that generates is active high, has stronger SO
2Adsorptive power helps reducing SO
2Emission concentration, reduce pollution to environment.
4, suspended state preheating decomposition system level of automation is high, and production efficiency is high, is convenient to expand the scale of production.
5, calcining, decompose and all under negative pressure, to carry out, no dust discharge pollutes for a short time, and the production loss is low.
6, can afterheat generating system be installed at grate cooler, further to cut down the consumption of energy.
Description of drawings:
Fig. 1 is a process flow sheet of the present invention.
Wherein, 1, one-level whirlwind tube; 2, secondary whirlwind tube; 3, three grades of whirlwind tubes; 4, Category Four cyclone tube; 5, five-stage whirlwind tube; 6, mixing section; 7, combustion decomposition chamber; 8, gas regulator; 9, coal gas voltage stabilizing cabinet; 10, grate cooler; 11, warm air; 12, active lime powder; 13, gas line; 14, air-flow; 15, streams; 16, high pressure positive blower; 17, cooling air.
Embodiment:
Below in conjunction with accompanying drawing the present invention is done detailed description, but be not limited thereto.
Embodiment 1, a kind ofly utilizes the coal gas calcined limestone to produce the method for active lime powder at the suspended state preheating decomposition furnace, and concrete steps are following:
Act as a fuel in the example that is applied as of 1000t/d cement suspended state predecomposition furnace with high coke mixed gas, described high coke mixed gas is the gas mixture of blast furnace gas and coke-oven gas.
1) to wear into fineness be that 80 μ m tail over is 12% limestone powder with Wingdale;
2) high pressure positive blower 16 that starts one-level whirlwind tube 1 exit as limestone powder the suspension propulsion source; The coal gas that pressure surge in the steel manufacture process is bigger is delivered to coal gas voltage stabilizing cabinet 9 through gas line 13; Coal gas is through 9 voltage stabilizings of coal gas voltage stabilizing cabinet, behind by-pass valve control 8 adjustment gas flows; Send into 7 burnings of combustion decomposition chamber through gas line 13, burning forms thermal-flame Wingdale is carried out calcining and decomposing; The flow of described coal gas voltage stabilizing cabinet 9 is 2500Nm
3, pressure is 1.5MPa; Described high pressure positive blower 16 formed airsheds are: 3200m
3/ min;
3) feeding mouth of limestone powder from secondary whirlwind tube 2 added, the streams 15 that limestone powder forms gets into one-level whirlwind tube 1 with the air-flow of secondary whirlwind tube 2;
4) limestone powder falls into three grades of whirlwind tubes 3 simultaneously at one-level whirlwind tube 1 inner suspension and be heated, and limestone powder gets into secondary whirlwind tube 2 with the air-flow of three grades of whirlwind tubes 3;
5) limestone powder falls into Category Four cyclone tube 4 simultaneously at secondary whirlwind tube 2 inner suspensions and be heated, and limestone powder gets into three grades of whirlwind tubes 3 with the air-flow of Category Four cyclone tube 4;
6) limestone powder falls into five-stage whirlwind tube 5 simultaneously at three grades of whirlwind tube 3 inner suspensions and be heated, and limestone powder gets into Category Four cyclone tube 4 with the air-flow of five-stage whirlwind tube 5;
7) limestone powder is at Category Four cyclone tube 4 inner suspensions and be heated; Fall into combustion decomposition chamber 7 simultaneously; Move downward along combustion decomposition chamber 7 with the eddy flow state, gas-fired thermal-flame is calcined with part limestone powder and is decomposed, and the limestone powder edge of not decomposing fully tiltedly flue gets into mixing section 6; The cooling air 17 of blowing over grate cooler 10 becomes warm air 11, and described warm air 11 gets into mixing section 6, and the limestone powder that does not decompose is fully further decomposed; Temperature in the mixing section 6 is 900-1050 ℃;
8) limestone powder gets in the five-stage whirlwind tube 5 with air-flow, in five-stage whirlwind tube 5, resolves into active lime powder fully, and active lime powder 12 falls into grate cooler 10 coolings, gets active lime powder 12 finished products, and the activity of active lime powder 12 is 350ml.
Step 1)-8) in, the sectional wind velocity of described whirlwind tubes at different levels is one-level whirlwind tube: 3～4m/s respectively; Secondary whirlwind tube: 4.8～5.5m/s; Three grades of whirlwind tube: 4.8～5.5m/s; Category Four cyclone tube: 5～6m/s; Five-stage whirlwind tube: 5～6m/s.
Step 1)-8) in, described material stops 25s altogether in 1～5 grade of whirlwind tube, in combustion decomposition chamber 7 and mixing section 6, stops 8-10s altogether.
The volume ratio of blast furnace gas and coke-oven gas is 2: 1 in the mixed gas, and the calorific value of mixed gas is 8046.88KJ/Nm
3, the consumption of high coke mixed gas is 12937.47Nm
3/ h, the theoretical air requirement is 23636.76Nm
3/ h, exhaust gas volumn is 31149.00Nm
3/ h; Do not change the predecomposition furnace size; Flue gas flow rate 0.54m/s then; Exhaust gas volumn and flue gas flow rate when predecomposition furnace burning by blast furnace gas and coke-oven gas ratio of mixture is 2: 1 the exhaust gas volumn that mixed gas produced and flue gas flow rate and combusting coal fines are more approaching, can not impact precalcining system basically.
The crushing of whirlwind tubes at different levels is one-level respectively: 800-900Pa; Secondary: 520-580Pa; Three grades: 500-550Pa; Level Four: 550-600Pa; Pyatyi: 450-500Pa; Total crushing 2820-3130Pa; Other crushing such as decomposing furnace, pipeline 1400-2000Pa; Be the total crushing 4220-5130Pa of system.
Wherein the temperature of the limestone powder of three～five-stage whirlwind tube inner suspension is respectively 513 ℃, 645 ℃ and 844 ℃.
Process step such as embodiment 1 are said, and different is that described coal gas is selected blast furnace gas or coke-oven gas for use.
Process step such as embodiment 1 are said, and different is that described coal gas is selected coal gas of converter for use.
Claims (10)
1. one kind is utilized the coal gas calcined limestone to produce the method for active lime powder at the suspended state preheating decomposition furnace, and step is following:
1) Wingdale is worn into limestone powder;
2) high pressure positive blower that starts one-level whirlwind tube exit as limestone powder the suspension propulsion source; The coal gas that pressure surge in the steel manufacture process is bigger is through gas pipeline transportation service to coal gas voltage stabilizing cabinet; Coal gas is through the voltage stabilizing of coal gas voltage stabilizing cabinet, behind by-pass valve control adjustment gas flow; Send into the burning of combustion decomposition chamber through gas line, burning forms thermal-flame Wingdale is carried out calcining and decomposing;
3) feeding mouth of limestone powder from secondary whirlwind tube added, the streams that limestone powder forms gets into one-level whirlwind tube with the air-flow of secondary whirlwind tube;
4) limestone powder falls into three grades of whirlwind tubes simultaneously at one-level whirlwind tube inner suspension and be heated, and limestone powder gets into secondary whirlwind tube with the air-flow of three grades of whirlwind tubes;
5) limestone powder falls into the Category Four cyclone tube simultaneously at secondary whirlwind tube inner suspension and be heated, and limestone powder gets into three grades of whirlwind tubes with the air-flow of Category Four cyclone tube;
6) limestone powder falls into the five-stage whirlwind tube simultaneously at three grades of whirlwind tube inner suspensions and be heated, and limestone powder gets into the Category Four cyclone tube with the air-flow of five-stage whirlwind tube;
7) limestone powder is at Category Four cyclone tube inner suspension and be heated; Fall into the combustion decomposition chamber simultaneously; Move downward along the combustion decomposition chamber with the eddy flow state, gas-fired thermal-flame is calcined with part limestone powder and is decomposed, and the limestone powder edge of not decomposing fully tiltedly flue gets into mixing section; The cooling air of blowing over grate cooler becomes warm air, and described warm air gets into mixing section, and the limestone powder that does not decompose is fully further decomposed;
8) limestone powder gets in the five-stage whirlwind tube with air-flow, in the five-stage whirlwind tube, resolves into active lime powder fully, and active lime powder falls into the grate cooler cooling, gets the active lime powder finished product.
2. method according to claim 1 is characterized in that, the limestone powder described in the step 1) is that fineness is that 75-85 μ m tails over the limestone powder into 11-13%.
3. method according to claim 1 is characterized in that step 2) described in coal gas be blast furnace gas, coal gas of converter, coke-oven gas and the high coke mixed gas of by-product in the steel manufacture process.
4. method according to claim 1 is characterized in that step 2) described in be the gas flow of the suitable heat of 29000～30000kJ/s through by-pass valve control adjustment gas flow.
5. method according to claim 1 is characterized in that step 2) described in coal gas voltage stabilizing cabinet flow be 2500Nm
3/ h, pressure are 1.5MPa.
6. method according to claim 1 is characterized in that, the temperature in the mixing section described in the step 7) is 900-1100 ℃.
7. method according to claim 1 is characterized in that, the sectional wind velocity of whirlwind tubes at different levels is one-level whirlwind tube: 3～4m/s respectively; Secondary whirlwind tube: 4.8～5.5m/s; Three grades of whirlwind tube: 4.8～5.5m/s; Category Four cyclone tube: 5～6m/s; Five-stage whirlwind tube: 5～6m/s.
8. method according to claim 1 is characterized in that step 2) described in the formed airshed of high pressure positive blower be: 3000-3500m
3/ min.
9. method according to claim 1 is characterized in that, the activity of the active lime powder described in the step 8) is 320-380ml.
10. method according to claim 1 is characterized in that, material stops 25～30s altogether in 1～5 grade of whirlwind tube, in combustion decomposition chamber and mixing section, stops 8-10s altogether.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102643869A CN101987783B (en) | 2010-08-27 | 2010-08-27 | Method for producing active pulverized lime by utilizing coal gas to calcine limestone through suspended state pre-heating decomposing furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102643869A CN101987783B (en) | 2010-08-27 | 2010-08-27 | Method for producing active pulverized lime by utilizing coal gas to calcine limestone through suspended state pre-heating decomposing furnace |
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| Publication Number | Publication Date |
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| CN101987783A CN101987783A (en) | 2011-03-23 |
| CN101987783B true CN101987783B (en) | 2012-08-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108585555A (en) * | 2018-06-26 | 2018-09-28 | 武汉源锦建材科技有限公司 | A kind of homogeneous calcining Preparation equipment of industrialization powder clinker and preparation method |
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| CN102649627A (en) * | 2012-06-08 | 2012-08-29 | 河北联合大学 | Method for preparing active lime by calcining limestone |
| CN103058233B (en) * | 2012-06-25 | 2014-06-04 | 建德市宏兴钙业有限责任公司 | Production method of active metallurgical lime |
| CN102745914B (en) * | 2012-07-03 | 2013-07-31 | 江苏永钢集团有限公司 | Roasting process for active lime in rotary kiln |
| CN102730731B (en) * | 2012-07-24 | 2014-02-05 | 广西大学 | Lime powder production equipment taking bagasse as fuel |
| CN103542729A (en) * | 2013-07-25 | 2014-01-29 | 葛洲坝集团水泥有限公司 | Feeding method of cement clinker firing device with external decomposing furnace |
| CN103387347B (en) * | 2013-07-30 | 2015-01-28 | 天津水泥工业设计研究院有限公司 | Method and device for producing active lime powder from calcined limestone |
| CN105347704B (en) * | 2015-12-03 | 2017-10-27 | 洛阳建材建筑设计研究院有限公司 | A kind of production method of oil shale tailing particles suspension lime kiln |
| CN107285651B (en) * | 2017-07-10 | 2022-11-11 | 合肥水泥研究设计院有限公司 | Active powder lime suspension calcining device |
| CN108264248B (en) * | 2018-04-18 | 2023-07-18 | 镇江苏博特新材料有限公司 | Suspension calcination production process and device for light burned MgO |
| CN111018369B (en) * | 2019-12-11 | 2021-10-15 | 东北大学 | Magnesite suspension decomposing furnace |
| CN111908494B (en) * | 2020-08-17 | 2022-03-18 | 浙江钙科机械设备有限公司 | Low-energy-consumption calcium carbonate suspension calcination process |
| CN114249547B (en) * | 2020-09-24 | 2022-07-05 | 合肥丰达水泥科技有限公司 | Kiln-free calcination process for producing powdery active lime |
| CN113860345A (en) * | 2021-10-08 | 2021-12-31 | 浙江钙科机械设备有限公司 | Automatic control system for calcium oxide classification suspension calcination process |
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| CN108585555A (en) * | 2018-06-26 | 2018-09-28 | 武汉源锦建材科技有限公司 | A kind of homogeneous calcining Preparation equipment of industrialization powder clinker and preparation method |
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| CN101987783A (en) | 2011-03-23 |
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