CN108395123A - 99 grades of calcium oxide electricity of high activity burn stove and method for calcinating - Google Patents
99 grades of calcium oxide electricity of high activity burn stove and method for calcinating Download PDFInfo
- Publication number
- CN108395123A CN108395123A CN201810408004.1A CN201810408004A CN108395123A CN 108395123 A CN108395123 A CN 108395123A CN 201810408004 A CN201810408004 A CN 201810408004A CN 108395123 A CN108395123 A CN 108395123A
- Authority
- CN
- China
- Prior art keywords
- calcium oxide
- kiln
- calcite
- forming blocks
- kiln body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 title claims abstract description 73
- 239000000292 calcium oxide Substances 0.000 title claims abstract description 73
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 title claims abstract description 73
- 230000005611 electricity Effects 0.000 title claims abstract description 44
- 238000001354 calcination Methods 0.000 title claims abstract description 39
- 230000000694 effects Effects 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 26
- 229910021532 Calcite Inorganic materials 0.000 claims abstract description 98
- 238000010438 heat treatment Methods 0.000 claims abstract description 42
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 27
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 21
- 229910052760 oxygen Inorganic materials 0.000 claims description 21
- 239000001301 oxygen Substances 0.000 claims description 21
- 229910052751 metal Inorganic materials 0.000 claims description 19
- 239000002184 metal Substances 0.000 claims description 19
- 230000005674 electromagnetic induction Effects 0.000 claims description 18
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 13
- 239000000919 ceramic Substances 0.000 claims description 13
- 239000001569 carbon dioxide Substances 0.000 claims description 12
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 11
- 238000009413 insulation Methods 0.000 claims description 10
- 238000004806 packaging method and process Methods 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 9
- 230000001681 protective effect Effects 0.000 claims description 9
- 238000003837 high-temperature calcination Methods 0.000 claims description 8
- 238000009423 ventilation Methods 0.000 claims description 8
- 238000005303 weighing Methods 0.000 claims description 8
- 238000010521 absorption reaction Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 7
- 239000004575 stone Substances 0.000 claims description 7
- 230000036760 body temperature Effects 0.000 claims description 5
- 238000003801 milling Methods 0.000 claims description 5
- 238000000748 compression moulding Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000010410 layer Substances 0.000 claims 1
- 239000002344 surface layer Substances 0.000 claims 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 abstract description 18
- 229910052791 calcium Inorganic materials 0.000 abstract description 18
- 239000011575 calcium Substances 0.000 abstract description 18
- 230000003647 oxidation Effects 0.000 abstract description 16
- 238000007254 oxidation reaction Methods 0.000 abstract description 16
- 230000007812 deficiency Effects 0.000 abstract description 2
- 229960004424 carbon dioxide Drugs 0.000 description 12
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000007599 discharging Methods 0.000 description 5
- 229910000019 calcium carbonate Inorganic materials 0.000 description 4
- 238000004590 computer program Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 230000003519 ventilatory effect Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 235000013312 flour Nutrition 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/02—Oxides or hydroxides
- C01F11/04—Oxides or hydroxides by thermal decomposition
- C01F11/06—Oxides or hydroxides by thermal decomposition of carbonates
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
- C01P2006/65—Chroma (C*)
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/80—Compositional purity
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Thermal Sciences (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Furnace Details (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The invention discloses a kind of 99 grades of calcium oxide electricity of high activity to burn stove and method for calcinating, it is intended to solve calcium oxide calcining and high-purity, double high-quality of high activity are not achieved, the deficiency of high-end requirement required in the market is not achieved in oxidation calcium product.The invention includes kiln body, the kiln car being movably arranged in kiln body, calcite forming blocks are stacked on kiln car, kiln body is equipped with wicket, it is mounted on heating wire on kiln body inner wall and on wicket inner surface, kiln car is equipped with air admission hole, air admission hole one end is connected to kiln body inner cavity, the air admission hole other end connects admission gear, kiln body inner cavity is equipped with temperature detector, pressure detector, admission gear includes air accumulator, solenoid valve, flow detector, controller, air inlet pipe is installed between air accumulator and air admission hole, solenoid valve, flow detector is installed in air inlet pipe, heating wire, temperature detector, pressure detector, solenoid valve, flow detector is electrically connected on controller.
Description
Technical field
The present invention relates to calcium oxide calcining technologies, more specifically, it relates to which a kind of 99 grades of calcium oxide electricity of high activity burn stove
Kiln and method for calcinating.
Background technology
China is calcium oxide big producer, but since technique falls behind, this field of high-purity, highly active calcium oxide is not achieved
High-end standard requirement.The drawbacks of traditional processing technology：The product of high activity mostly uses the short calcination time of superhigh temperature, although active
It improves, but calcium oxide content is substantially reduced；The calcium oxide of high-purity is calcined for a long time using high temperature, and purity is to be improved, but live
Property degree is decreased obviously.Traditional processing technology can not obtain double high products, and high-end requirement required in the market is not achieved.
Invention content
The present invention overcomes calcium oxide calcinings, and high-purity, double high-quality of high activity are not achieved, and oxidation calcium product is not achieved
The deficiency of high-end requirement needed in the market provides a kind of 99 grades of calcium oxide electricity of high activity and burns stoves and method for calcinating, oxidation
Calcium electricity, which burns the calcium oxide that stove calcining is produced, can reach high-purity, double high-quality of high activity, and oxidation calcium product can reach
High-end requirement needed in the market.
In order to solve the above-mentioned technical problem, the present invention uses following technical scheme：A kind of 99 grades of calcium oxide electricity burnings of high activity
Stove, including kiln body, the kiln car that is movably arranged in kiln body stack the side formed by broken calcite compression moulding on kiln car
Stone forming blocks are solved, kiln body is equipped with wicket, is mounted on heating wire on kiln body inner wall and on wicket inner surface, kiln car is equipped with
Air admission hole, air admission hole one end are connected to kiln body inner cavity, and the air admission hole other end connects admission gear, and kiln body inner cavity is equipped with temperature inspection
Survey device, pressure detector, admission gear includes air accumulator, solenoid valve, flow detector, controller, air accumulator and air admission hole it
Between air inlet pipe is installed, solenoid valve, flow detector are installed in air inlet pipe, heating wire, temperature detector, pressure detector,
Solenoid valve, flow detector are electrically connected on controller, and kiln body upper end is equipped with gas outlet.
When calcium oxide produces, first high-quality calcite is crushed, is then pressed into the calcite forming blocks of brick-shaped structure, then heap
It is stacked on kiln car, ensures that there are enough ventilation gaps between adjacent two calcites forming blocks.Then kiln car is pushed into kiln body,
Wicket is shut, starts electricity burning stove and calcite forming blocks is calcined.In calcination process, it is passed through into kiln body by air admission hole
Oxygen enables the carbon dioxide isolated quickly to be discharged, it is advantageously ensured that the height of oxidation calcium product for removing carbon dioxide
Purity.The temperature in kiln body that controller is detected according to temperature detector controls the heating power of heating wire, to realization pair
Kiln body temperature is precisely controlled.The pressure in kiln body that controller is detected by pressure detector, kiln body is passed through to control
The flow of interior oxygen, and the practical oxygen flow that flow detector detects is fed back into controller, controller is according to feedback
Oxygen flow information controls the aperture of solenoid valve.Computer program controlled system can be placed the controller into, is controlled by computer program controlled system
Temperature and pressure in oxygen flow and kiln body, fireman can grasp the working of a furnace according to detection data and adjust the working of a furnace, simplify operation,
Reduce labor intensity.Double height of high-purity, high activity can be reached by burning the calcium oxide that stove is produced using the electricity of this structure
Quality, oxidation calcium product can reach in the market needed for high-end requirement.
Preferably, liftable is equipped with heat insulation pedestal on kiln car, air admission hole is arranged in heat insulation pedestal.Calcite forming blocks
Heat insulation pedestal is up and down reciprocatingly to lift in a certain range in calcination process, be conducive to each position of calcite forming blocks it is uniform by
Forged is burnt, and is conducive to avoid raw burn, burn-off phenomenon, it is ensured that the quality of calcium oxide.
Preferably, being equipped with several support tubes on kiln car upper surface, support tube lower end is connected to air admission hole, kiln car
If top is equipped at intervals with dried layer pallet, pallet is sleeved on support tube, and tray edge is equipped with the limit flange dug upwards, pallet
Interior to be equipped with several ventholes, venthole is communicated to support tube, and being correspondingly provided with several with each venthole on tray upper surface goes out
Stomata, venthole are connected to venthole.
Calcite forming blocks are stacked on pallet and are calcined, and ventilation gap is big between calcite forming blocks.When carrying out logical oxygen
When except carbon, oxygen by air admission hole flow into support tube, and by venthole from pallet venthole outflow, be passed through calcite at
Between type block, ventilatory effect is good, is conducive to the thorough discharge of carbon dioxide, it is ensured that the high-purity of product.Calcining is completed to be unloaded
When material, it is only necessary to pallet to be removed from support tube from level to level, the calcium oxide on pallet, which is poured into flour mill, to be milled,
Discharging is convenient.Limit flange plays good protective action to calcite forming blocks, prevents and topples over phenomenon.
Preferably, being equipped with inductance coil in kiln body side wall, inductance coil upper and lower ends are respectively close to above and below kiln body two
It holds, calandria is equipped in calcite forming blocks, calandria includes electromagnetic induction metal core, protection ceramics, electromagnetic induction metal core
Closing setting is in protection ceramics.
While electricity burning stove carries out heating and calcining by heating wire to calcite forming blocks, inductance coil energization other side solution
Stone is molded electromagnetic induction metal core in the block and carries out electromagnetic heating, make calcite forming blocks by outside inside and by it is interior outward simultaneously into
Row heating, it is ensured that the inside and outside heat absorption of calcite forming blocks is balanced, has prevented local raw burn, burn-off phenomenon, has effectively increased calcium oxide
The quality of product.
Preferably, being set with protective case on inductance coil outer wall.Protective case plays good heat-insulated guarantor to inductance coil
Shield acts on.
Preferably, an inductance coil part is arranged in kiln body, another part is arranged in wicket, two parts inductor wire
Circle inserting conducting.This structure setting is convenient for the mounting arrangements of inductance coil.
A kind of calcium oxide method for calcinating burning stove using 99 grades of calcium oxide electricity of high activity,
The first step, selected calcite are cleaned and are drained as raw material；
Second step crushes calcite, and it is spare to filter out the close calcite particle of granular size；
Third walks, and by calcite particle press fitting at the calcite forming blocks of rectangular-shape, then carries out dewatered drying；
Calcite forming blocks after dewatered drying are stacked on kiln car by the 4th step, and kiln car is pushed into kiln body, cover kiln
Door；
5th step, electricity burn stove and are calcined to calcite forming blocks, first pass through 500-850 degrees Celsius of medium temperature heating and heat absorption
Stage heats 20-30 hours, and making calcite forming blocks, temperature reaches 850 degrees Celsius from outside to inside；It is Celsius using 850-1150
The high-temperature calcination stage is spent, is heated 10-15 hours, heating rate is controlled at 15-20 degrees Celsius per hour；Then it is Celsius to pass through 1150
The weighing apparatus temperature of degree and holding stage 25-35 hours；It is passed through oxygen into kiln body and goes in high-temperature calcination stage and weighing apparatus temperature and holding stage
Removing carbon dioxide；
6th step, calcium oxide kiln discharge, calcium oxide kiln discharge after kiln body temperature is reduced to 580 degrees Celsius are sealing entirely immediately after kiln discharge
The workshop closed carries out milling operation, and quickly enters bag packaging, from calcium oxide kiln discharge to completion packaging time control in one hour.
Since the separation of calcination of calcium carbonate process carbon dioxide is that calcium carbonate surface internally slowly carries out, so big grain
Diameter calcium carbonate is more difficult than the calcining of small particle, the calcium carbonate of size unevenness calcine together it is more difficult, therefore to calcite into
Row crushes, and carrying out calcining again after calcite is broken is not easy to burst, and then filters out the close calcite particle press fitting of granular size
It is calcined at the calcite forming blocks of rectangular-shape to ensureing that the quality of product is most important.Stove is burnt using electricity to be heated
Calcining, can be evenly heated, no dead angle in all gaps of calcite forming blocks, since electricity burns even flame and is to put simultaneously again
Heat can accomplish conflagration and be quickly cooled down.Ash and impurity are free of after calcium oxide calcining, the calcium oxide activity obtained in this way
Good, purity height, impurity are few.Dewatered drying is carried out before the calcining of calcite forming blocks, removes volatile substance.Calcite forming blocks are forged
Burning process includes medium temperature heating and endothermic phase, high-temperature calcination stage, weighing apparatus temperature and holding stage, in high-temperature calcination step-up temperature speed
Degree control is at 15-20 degrees Celsius per hour, and as heating rate is too fast, that is, external heating temperature is excessively high, easily causes surface mistake
Phenomenon is burnt, high activity acquirement is directly affected, heating temperature can cause the separation of CO2 difficult slowly excessively, and the content of free calcium oxide will
Decline.It is passed through oxygen into kiln body and removes removing carbon dioxide in high-temperature calcination stage and weighing apparatus temperature and holding stage, makes two isolated
Carbonoxide can quickly be discharged, it is advantageously ensured that the high-purity of oxidation calcium product.Mill is completed after calcium oxide kiln discharge in one hour
Powder, packaging prevent the impurity and moisture in oxidation calcium product sucking air and influence quality.The oxygen produced by this method
High-purity, double high-quality of high activity can be reached by changing calcium, and oxidation calcium product can reach high-end requirement required in the market.
Preferably, install inductance coil in the kiln body side wall that electricity burns stove, inductance coil upper and lower ends respectively close to
Kiln body upper and lower ends are packed into calandria, the calandria side of being fitted in during the press fitting of calcite forming blocks in calcite forming blocks
It solves inside stone forming blocks, calandria includes electromagnetic induction metal core, protection ceramics, and the closing setting of electromagnetic induction metal core is being protected
In ceramics, electricity, which burns stove, carries out in calcination process calcite forming blocks, and inductance coil is powered is molded electricity in the block to calcite
Magnetic induction metal core carries out electromagnetic heating, makes calcite forming blocks by being carried out at the same time heating outward inside and by interior outside；6th step,
The calandria in calcium oxide is taken out before being milled after calcium oxide kiln discharge.
While electricity burning stove carries out heating and calcining by heating wire to calcite forming blocks, inductance coil energization other side solution
Stone is molded electromagnetic induction metal core in the block and carries out electromagnetic heating, make calcite forming blocks by outside inside and by it is interior outward simultaneously into
Row heating, it is ensured that the inside and outside heat absorption of calcite forming blocks is balanced, has prevented local raw burn, burn-off phenomenon, has effectively increased calcium oxide
The quality of product.
Calcite forming blocks are carried out in calcination process preferably, electricity burns stove, lift kiln car repeatedly up and down.On kiln car
Lower reciprocal lifting is conducive to the thermally equivalent calcining of each position of calcite forming blocks, is conducive to avoid raw burn, burn-off phenomenon,
Ensure the quality of calcium oxide.
Preferably, being equipped with several support tubes on kiln car upper surface, support tube lower end is connected to air admission hole, kiln car
If top is equipped at intervals with dried layer pallet, pallet is sleeved on support tube, and tray edge is equipped with the limit flange dug upwards, pallet
Interior to be equipped with several ventholes, venthole is communicated to support tube, and being correspondingly provided with several with each venthole on tray upper surface goes out
Stomata, venthole are connected to venthole；4th step, calcite forming blocks are stacked on the pallet on kiln car, calcite forming blocks
Between reserve ventilation gap.
When carrying out logical oxygen except carbon, oxygen flows into support tube by air admission hole, and passes through venthole from the outlet on pallet
Hole is flowed out, and is passed through between calcite forming blocks, ventilatory effect is good, is conducive to the thorough discharge of carbon dioxide, it is ensured that the height of product
Purity.When calcining completes to carry out discharging, it is only necessary to remove pallet from support tube from level to level, the calcium oxide on pallet is poured into
Flour mill is milled, and discharging is convenient.Limit flange plays good protective action to calcite forming blocks, prevents out
Now topple over phenomenon.
Compared with prior art, the beneficial effects of the invention are as follows：Calcium oxide electricity burns stove and calcines the calcium oxide energy produced
Reach high-purity, double high-quality of high activity, oxidation calcium product can reach in the market needed for high-end requirement.
Description of the drawings
Fig. 1 is the structural schematic diagram of the kiln body of the present invention；
Fig. 2 is the structural schematic diagram of the kiln car of the present invention；
Fig. 3 is the partial structural diagram of Fig. 2 of the present invention；
Fig. 4 is the sectional view of the calcite forming blocks of the present invention；
In figure：1, kiln body, 2, kiln car, 3, calcite forming blocks, 4, wicket, 5, heating wire, 6, air admission hole, 7, heat insulation pedestal, 8,
Support tube, 9, pallet, 10, limit flange, 11, venthole, 12, guide rail, 13, venthole, 14, flange, 15, block, 16, inductance
Coil, 17, electromagnetic induction metal core, 18, protection ceramics, 19, protective case, 20, sliding slot, 21, idler wheel, 22, guide post, 23, rise
Piston cylinder drops, and 24, casing.
Specific implementation mode
Below by specific embodiment, and in conjunction with attached drawing, technical scheme of the present invention is further described：
Embodiment：A kind of 99 grades of calcium oxide electricity burning stoves of high activity（Referring to attached drawing 1 to 4）, including kiln body 1, it is movably arranged on kiln
Internal kiln car 2 is equipped with guide rail 12 below kiln body, and kiln car lower surface is equipped with sliding slot 20, installs idler wheel 21 in sliding slot, on kiln car
Sliding slot be adapted to guide rail, roller supporting is on guide rail.The side formed by broken calcite compression moulding is stacked on kiln car to solve
Stone forming blocks 3, there are ventilation gap between calcite forming blocks, kiln body is equipped with wicket 4, on kiln body inner wall and wicket inner surface
On be mounted on heating wire 5, kiln car is equipped with air admission hole 6, and air admission hole one end is connected to kiln body inner cavity, and the air admission hole other end connects
Admission gear, kiln body inner cavity are equipped with temperature detector, pressure detector, and admission gear includes air accumulator, solenoid valve, flow inspection
Device, controller are surveyed, air inlet pipe is installed between air accumulator and air admission hole, solenoid valve, flow detector are installed in air inlet pipe, electricity
Heated filament, temperature detector, pressure detector, solenoid valve, flow detector are electrically connected on controller, and kiln body upper end is equipped with out
Gas port.
Liftable is equipped with heat insulation pedestal 7 on kiln car, and air admission hole is arranged in heat insulation pedestal.Heat insulation pedestal connects on lower surface
There are guide post 22 and lifting piston cylinder telescopic rod, lifting piston cylinder 23 is mounted on kiln car below heat insulation pedestal, heat-insulated on kiln car
It is equipped with below pedestal and the pilot hole of guide post adaptation, guide post is actively plugged in pilot hole.
Several support tubes 8 are installed, support tube lower end is connected to air admission hole, interval above kiln car on kiln car upper surface
If equipped with dried layer pallet 9, pallet is sleeved on support tube, and tray edge is equipped with the limit flange 10 dug upwards, is set in pallet
There are several ventholes 11, venthole is communicated to support tube, several outlets are correspondingly provided with each venthole on tray upper surface
Hole 13, venthole is connected to venthole.It is equipped with casing 24 with support tube link position on pallet, upper pallet lower surface is supported on
Sleeve upper end on next pallet, sleeve outer wall are equipped with several through-holes, and through-hole penetrates into support tube.Support tube lower end outer wall is in
Step-like, the tray support of bottom is on the transition face of the step-like position in support tube lower end.Outlet hole edge on tray upper surface
Edge is equipped with a circle flange 14, connects block 15 on flange, airspace is equipped between block and flange.The setting of flange and block
Prevent calcium oxide particle from falling into venthole, it is ensured that the circulation of venthole.
Inductance coil 16 is installed, inductance coil upper and lower ends are respectively close to kiln body upper and lower ends, Fang Xie in kiln body side wall
Calandria is equipped in stone forming blocks, calandria includes electromagnetic induction metal core 17, protection ceramics 18, the closing of electromagnetic induction metal core
Setting is in protection ceramics.Protective case 19 is set on inductance coil outer wall.Protective case plays the role of thermal insulation protection to inductance coil.
An inductance coil part is arranged in kiln body, and another part is arranged in wicket, the inserting conducting of two parts inductance coil.
When calcium oxide produces, first high-quality calcite is crushed, is then pressed into the calcite forming blocks of brick-shaped structure, then heap
It is stacked on kiln car, ensures that there are enough ventilation gaps between adjacent two calcites forming blocks.Then kiln car is pushed into kiln body,
Wicket is shut, starts electricity burning stove and calcite forming blocks is calcined.In calcination process, it is passed through into kiln body by air admission hole
Oxygen enables the carbon dioxide isolated quickly to be discharged, it is advantageously ensured that the height of oxidation calcium product for removing carbon dioxide
Purity.The temperature in kiln body that controller is detected according to temperature detector controls the heating power of heating wire, to realization pair
Kiln body temperature is precisely controlled.The pressure in kiln body that controller is detected by pressure detector, kiln body is passed through to control
The flow of interior oxygen, and the practical oxygen flow that flow detector detects is fed back into controller, controller is according to feedback
Oxygen flow information controls the aperture of solenoid valve.Computer program controlled system can be placed the controller into, is controlled by computer program controlled system
Temperature and pressure in oxygen flow and kiln body, fireman can grasp the working of a furnace according to detection data and adjust the working of a furnace, simplify operation,
Reduce labor intensity.While electricity burning stove carries out heating and calcining by heating wire to calcite forming blocks, inductance coil is logical
Electricity is molded electromagnetic induction metal core in the block to calcite and carries out electromagnetic heating, make calcite forming blocks from outside inside and from it is interior toward
It is carried out at the same time heating outside, it is ensured that the inside and outside heat absorption of calcite forming blocks is balanced, has prevented local raw burn, burn-off phenomenon, has effectively improved
The quality of oxidation calcium product.
A kind of calcium oxide method for calcinating burning stove using 99 grades of calcium oxide electricity of high activity,
The first step, selected calcite are cleaned and are drained as raw material；
Second step crushes calcite, and granularity is controlled in 60-100 mesh, filters out the close calcite particle of granular size
It is spare；
Third walks, and by calcite particle press fitting at the calcite forming blocks of rectangular-shape, calcite is molded block size 250mm*
Then 120mm*50mm carries out dewatered drying；Calcite tcrude ore hardness is controlled at 3-4 grades by the pressure during press fitting,
So that calcite forming blocks hardness is controlled at 2 grades hereinafter, forming micro- shape gap inside the calcite forming blocks of press fitting, calcines in this way
The oxidation calcium product crystallization gone out is subtle；
Calcite forming blocks after dewatered drying are stacked on kiln car by the 4th step, and kiln car is pushed into kiln body, cover kiln
Door；
5th step, electricity burn stove and are calcined to calcite forming blocks, first pass through 500-850 degrees Celsius of medium temperature heating and heat absorption
Stage heats 20-30 hours, is heated 24 hours in the present embodiment, and making calcite forming blocks, to reach 850 Celsius for temperature from outside to inside
Degree；Using 850-1150 celsius temperature calcination stages, heats 10-15 hours, heated 12 hours in the present embodiment, heating speed
Degree control is at 15-20 degrees Celsius per hour；Then pass through 1150 degrees Celsius of weighing apparatus temperature and holding stage 25-35 hours, this implementation
Control was at 30 hours in example；It is passed through oxygen into kiln body and removes removing carbon dioxide in high-temperature calcination stage and weighing apparatus temperature and holding stage；
6th step, calcium oxide kiln discharge, calcium oxide kiln discharge after kiln body temperature is reduced to 580 degrees Celsius are sealing entirely immediately after kiln discharge
The workshop closed carries out milling operation, and quickly enters bag packaging, from calcium oxide kiln discharge to completion packaging time control in one hour.
Inductance coil is installed in the kiln body side wall that electricity burns stove, inductance coil upper and lower ends are respectively close to above and below kiln body two
End is packed into calandria, calandria is fitted in calcite forming blocks during the press fitting of calcite forming blocks in calcite forming blocks
Inside, calandria include electromagnetic induction metal core, protection ceramics, and electromagnetic induction metal core closing setting is in protection ceramics, electricity
It burns stove to carry out in calcination process calcite forming blocks, inductance coil is powered is molded electromagnetic induction metal in the block to calcite
Core carries out electromagnetic heating, makes calcite forming blocks by being carried out at the same time heating outward inside and by interior outside；6th step, calcium oxide kiln discharge
The calandria in calcium oxide is taken out before being milled afterwards, the calandria of taking-up is reusable.
Several support tubes are installed, support tube lower end is connected to air admission hole, interval above kiln car on kiln car upper surface
If equipped with dried layer pallet, pallet is sleeved on support tube, and tray edge is equipped with the limit flange dug upwards, if being equipped in pallet
Dry venthole, venthole are communicated to support tube, several ventholes, outlet are correspondingly provided with each venthole on tray upper surface
Hole is connected to venthole；4th step, calcite forming blocks are stacked on the pallet on kiln car, and ventilation is reserved between calcite forming blocks
Gap.When carrying out logical oxygen except carbon, oxygen flows into support tube by air admission hole, and passes through venthole from the venthole stream on pallet
Go out, be passed through between calcite forming blocks, ventilatory effect is good, is conducive to the thorough discharge of carbon dioxide, it is ensured that the high-purity of product.
When calcining completes to carry out discharging, it is only necessary to remove pallet from support tube from level to level, the calcium oxide on pallet is poured into milling
Machine is milled, and discharging is convenient.Limit flange plays good protective action to calcite forming blocks, prevents and inclines
Phenomenon.Electricity, which burns stove, carries out in calcination process calcite forming blocks, lifts kiln car repeatedly up and down.
Calcium oxide powder is processed and packaging, this process is a crucial link of comparison, the oxidation that this programme is produced
100 grams of calcium is placed in and is placed with 400 milliliters of water（25 DEG C of water temperature）, in a minutes heating reach 80 DEG C, we drop from 1150 degree
When to 200 degree, his water suction point reaches 3-4%, if being down to 100 degree, moisture absorption reaches 5-6%, calcium oxide at 500 degree into
Row processing, process time are more than a hour, his water suction point will reach 1-1.5%, and it is very fast to absorb moisture.This programme
Calcium oxide is reduced to 580 degrees Celsius from 1150 degrees Celsius, carries out milling operation in totally enclosed workshop immediately after kiln discharge, and quickly
Enter bag packaging, from calcium oxide kiln discharge to packaging time control is completed in one hour, the moisture of absorbent lime is few, it is ensured that
Aoxidize the quality of calcium product.
The calcite material quality index that this programme uses is as follows：
The calcium oxide quality index that this programme is produced is as follows：
The calcium oxide that this programme is produced carries out contrast experiment with conventional oxidation calcium, weighs 100 grams of calcium oxide, is placed in 25 degrees Celsius
It in 400 milliliters of water of water temperature, is sufficiently stirred, records 1 minute solution temperature, data are as follows：
The oxidation calcium product that technical solution of the present invention is produced as can be seen from the table has reached high-purity and high activity
Double high-quality disclosure satisfy that the high demand in the market to calcium oxide.
Above-mentioned embodiment is only a preferred solution of the present invention, not the present invention is made in any form
Limitation, on the premise of not exceeding the technical scheme recorded in the claims also other variations and modifications.
Claims (10)
1. a kind of 99 grades of calcium oxide electricity of high activity burn stoves, characterized in that including kiln body, the kiln car being movably arranged in kiln body,
Stack the calcite forming blocks formed by broken calcite compression moulding on kiln car, kiln body is equipped with wicket, on kiln body inner wall
And heating wire is mounted on wicket inner surface, kiln car is equipped with air admission hole, and air admission hole one end is connected to kiln body inner cavity, air inlet
The hole other end connects admission gear, and kiln body inner cavity is equipped with temperature detector, pressure detector, admission gear include air accumulator,
Solenoid valve, flow detector, controller, install air inlet pipe between air accumulator and air admission hole, solenoid valve, flow detector are respectively mounted
In air inlet pipe, heating wire, temperature detector, pressure detector, solenoid valve, flow detector are electrically connected on controller,
Kiln body upper end is equipped with gas outlet.
2. 99 grades of calcium oxide electricity of high activity according to claim 1 burn stoves, characterized in that on kiln car liftable be equipped with every
Hot pedestal, air admission hole are arranged in heat insulation pedestal.
3. 99 grades of calcium oxide electricity of high activity according to claim 1 burn stove, characterized in that kiln car is equipped on upper surface
Several support tubes, support tube lower end are connected to air admission hole, if being equipped at intervals with dried layer pallet above kiln car, pallet is sleeved on branch
On stay tube, tray edge is equipped with the limit flange dug upwards, is equipped with several ventholes in pallet, venthole is communicated to support
It manages, is correspondingly provided with several ventholes with each venthole on tray upper surface, venthole is connected to venthole.
4. 99 grades of calcium oxide electricity of high activity according to claims 1 to 3 any one burn stove, characterized in that kiln body side
Inductance coil is installed in wall, inductance coil upper and lower ends respectively close to kiln body upper and lower ends, be equipped in calcite forming blocks plus
Hot body, calandria include electromagnetic induction metal core, protection ceramics, and electromagnetic induction metal core closing setting is in protection ceramics.
5. 99 grades of calcium oxide electricity of high activity according to claim 4 burn stove, characterized in that be set on inductance coil outer wall
Protective case.
6. 99 grades of calcium oxide electricity of high activity according to claim 4 burn stove, characterized in that an inductance coil part is arranged
In kiln body, another part is arranged in wicket, the inserting conducting of two parts inductance coil.
7. a kind of calcium oxide method for calcinating burning stove using 99 grades of calcium oxide electricity of high activity described in claim 1, feature
It is,
The first step, selected calcite are cleaned and are drained as raw material；
Second step crushes calcite, and it is spare to filter out the close calcite particle of granular size；
Third walks, and by calcite particle press fitting at the calcite forming blocks of rectangular-shape, then carries out dewatered drying；
Calcite forming blocks after dewatered drying are stacked on kiln car by the 4th step, and kiln car is pushed into kiln body, cover kiln
Door；
5th step, electricity burn stove and are calcined to calcite forming blocks, first pass through 500-850 degrees Celsius of medium temperature heating and heat absorption
Stage heats 20-30 hours, and making calcite forming blocks, temperature reaches 850 degrees Celsius from outside to inside；It is Celsius using 850-1150
The high-temperature calcination stage is spent, is heated 10-15 hours, heating rate is controlled at 15-20 degrees Celsius per hour；Then it is Celsius to pass through 1150
The weighing apparatus temperature of degree and holding stage 25-35 hours；It is passed through oxygen into kiln body and goes in high-temperature calcination stage and weighing apparatus temperature and holding stage
Removing carbon dioxide；
6th step, calcium oxide kiln discharge, calcium oxide kiln discharge after kiln body temperature is reduced to 580 degrees Celsius are sealing entirely immediately after kiln discharge
The workshop closed carries out milling operation, and quickly enters bag packaging, from calcium oxide kiln discharge to completion packaging time control in one hour.
8. 99 grades of calcium oxide electricity of high activity according to claim 7 burn the calcium oxide method for calcinating of stove, characterized in that
Inductance coil is installed in the kiln body side wall of electricity burning stove, inductance coil upper and lower ends are respectively close to kiln body upper and lower ends, calcite
During forming blocks press fitting, calandria is packed into calcite forming blocks, calandria is fitted in inside calcite forming blocks, heating
Body includes electromagnetic induction metal core, protection ceramics, and in protection ceramics, electricity burns stove other side for electromagnetic induction metal core closing setting
It solves stone forming blocks to carry out in calcination process, inductance coil is powered is molded electromagnetic induction metal core progress electromagnetism in the block to calcite
Heating makes calcite forming blocks by being carried out at the same time heating outward inside and by interior outside；6th step is milled after calcium oxide kiln discharge
The calandria in calcium oxide is taken out before.
9. 99 grades of calcium oxide electricity of high activity according to claim 7 burn the calcium oxide method for calcinating of stove, characterized in that electricity
It burns stove to carry out in calcination process calcite forming blocks, lifts kiln car repeatedly up and down.
10. 99 grades of calcium oxide electricity of high activity according to claim 7 burn the calcium oxide method for calcinating of stove, characterized in that
Several support tubes are installed, support tube lower end is connected to air admission hole, is equipped at intervals with above kiln car several on kiln car upper surface
Layer pallet, pallet are sleeved on support tube, and tray edge is equipped with the limit flange dug upwards, and several ventilations are equipped in pallet
Hole, venthole are communicated to support tube, are correspondingly provided with several ventholes on tray upper surface with each venthole, venthole with it is logical
Stomata is connected to；4th step, calcite forming blocks are stacked on the pallet on kiln car, and ventilation gap is reserved between calcite forming blocks.
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| US20120282563A1 (en) * | 2011-05-05 | 2012-11-08 | Magnesita Refractories Company | Rotary kiln lining and method |
| JP2014014793A (en) * | 2012-07-10 | 2014-01-30 | Daio Paper Corp | Method for producing inorganic particle, and inorganic particle |
| CN204848667U (en) * | 2015-08-31 | 2015-12-09 | 建德市新安江永合塑胶厂 | Calcium oxide calcining kiln device |
| CN204874307U (en) * | 2015-08-31 | 2015-12-16 | 建德市新安江永合塑胶厂 | Calcium oxide calcining kiln |
| CN105217974A (en) * | 2015-08-31 | 2016-01-06 | 建德市新安江永合塑胶厂 | High-quality calcium oxide production technique and device |
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- 2018-05-02 CN CN201810408004.1A patent/CN108395123B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120282563A1 (en) * | 2011-05-05 | 2012-11-08 | Magnesita Refractories Company | Rotary kiln lining and method |
| JP2014014793A (en) * | 2012-07-10 | 2014-01-30 | Daio Paper Corp | Method for producing inorganic particle, and inorganic particle |
| CN204848667U (en) * | 2015-08-31 | 2015-12-09 | 建德市新安江永合塑胶厂 | Calcium oxide calcining kiln device |
| CN204874307U (en) * | 2015-08-31 | 2015-12-16 | 建德市新安江永合塑胶厂 | Calcium oxide calcining kiln |
| CN105217974A (en) * | 2015-08-31 | 2016-01-06 | 建德市新安江永合塑胶厂 | High-quality calcium oxide production technique and device |
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Denomination of invention: High activity 99 level calcium oxide electric calcination furnace and calcination method Effective date of registration: 20231208 Granted publication date: 20221223 Pledgee: Zhejiang Jiande Rural Commercial Bank Co.,Ltd. Yangxi Sub branch Pledgor: JIANDE TAIHE NEW MATERIAL Co.,Ltd. Registration number: Y2023330002972 |