CN110425870A - A kind of bauxite Brown Alundum calcining-desiliconization integration tunnel oven - Google Patents
A kind of bauxite Brown Alundum calcining-desiliconization integration tunnel oven Download PDFInfo
- Publication number
- CN110425870A CN110425870A CN201910819106.7A CN201910819106A CN110425870A CN 110425870 A CN110425870 A CN 110425870A CN 201910819106 A CN201910819106 A CN 201910819106A CN 110425870 A CN110425870 A CN 110425870A
- Authority
- CN
- China
- Prior art keywords
- desiliconization
- section
- spray
- bauxite
- brown alundum
- 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.)
- Pending
Links
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 229910001570 bauxite Inorganic materials 0.000 title claims abstract description 30
- 230000010354 integration Effects 0.000 title claims abstract description 15
- 239000007921 spray Substances 0.000 claims abstract description 45
- 238000001816 cooling Methods 0.000 claims abstract description 13
- 238000001354 calcination Methods 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims description 14
- 238000010079 rubber tapping Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 13
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000003754 machining Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000000843 powder Substances 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 238000003723 Smelting Methods 0.000 description 3
- 241001062472 Stokellia anisodon Species 0.000 description 3
- 230000018044 dehydration Effects 0.000 description 3
- 238000006297 dehydration reaction Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 229910052593 corundum Inorganic materials 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229910001845 yogo sapphire Inorganic materials 0.000 description 2
- 101100537937 Caenorhabditis elegans arc-1 gene Proteins 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003837 high-temperature calcination Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/02—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity of multiple-track type; of multiple-chamber type; Combinations of furnaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a kind of bauxite Brown Alundum calcining-desiliconization integration tunnel ovens, are followed successively by preheating section, furnace zone, cooling section and spray section from kiln tail to kiln hood；Top in the spray section is equipped with spray tube, and spray tube is equipped with nozzle, and one end of spray tube is connected on lye sprinkling equipment after stretching out tunnel oven；The kiln wall of the spray section is equipped with several liquid-leaking nozzles, and the lower section of spray section is equipped with collecting tank.The calcining and desiliconization to block (group) shape bauxite can be achieved at the same time in equipment of the invention, and production is continuous, intelligent, is more conducive to realizing that the fine ore that grade reduces is produced for Brown Alundum, it is used with new process matching, with high in machining efficiency, more energy efficient environmental protection, and the lower feature of desiliconization cost.
Description
Technical field
The present invention relates to a kind of process equipment of bauxite Brown Alundum, especially a kind of bauxite Brown Alundum calcining-
Desiliconization integration tunnel oven.
Background technique
Brown Alundum, also known as diamond dust are a kind of Alundums.Brown Alundum main chemical is Al2O3, content exists
95.00%-97.00% separately contains a small amount of Fe, Si, Ti etc..Brown Alundum is most basic abrasive material, because its grinding performance is good, is applicable in
Range is wide.
Traditional Brown Alundum be with bauxite, carbon materials, three kinds of raw materials of iron filings in electric arc furnaces through thawing reduction and
It is made.Brown Alundum requires the amount of bauxite raw material very high, it is desirable that Al2O3Grade is not less than 80%, SiO2Content be no more than
6%, and as the growth of China's alumina industry develops, the reserves of high-quality bauxite are increasingly deficient, and enterprise has in face of raw material
The reality that grade reduces.In existing Brown Alundum smelting process, it is all made of natural good blocky bauxite, it is laggard through calcined dehydration
Enter and smelt program, comparatively dense lump ore, smelting process internal-external temperature difference is big, and the temperature of required smelting is higher, the time is longer, can make
Energy consumption increase must be smelted.Moreover the ingredient of natural lump ore has otherness, ingredient unevenness causes product quality to decline, yield rate
It reduces.
Ore is in recovery process, often with more Powder bauxite, due to the poor air permeability of fine ore, is easy to block
Burner hearth, generates excessive dust, pollutes environment, and fine ore is not as raw materials for metallurgy at present, and bauxite grade reduce mainly due to
In ore caused by silicone content increase.Therefore, the fine ore how reduced fine ore, especially grade is produced for Brown Alundum, is enterprise
The significant problem that industry and researcher pay close attention to.
With the continuous deepening of research, occur a kind of method for using and Brown Alundum being prepared using Powder bauxite at present,
Substantially technique is first to grind bauxite uniformly for it, carries out leaching desiliconization using lye after high-temperature calcination, needs after desiliconization by making
Block (group), calcined dehydration after drying, then often smelt and Brown Alundum is made.The maximum defect of the above method be alkali leaching desiliconization with
Block (group) calcining is two independent processes, respectively needs separately to heat up, cannot effectively be connected, high energy consumption and efficiency is low, to powdery
The alkali of ore soaks desiliconization, needs to carry out under agitation, increases cost of equipment.
Therefore, present inventor has developed a kind of calcining-desiliconization integration tunnel oven, can preferably solve the above problems.
Agglomeration of fine ore (group) is entered into kiln afterwards, completes desiliconization in burning zone, and activate silicon mineral, is cooled to through cooling zone pressure certain
Temperature carries out desiliconization by the alkalinity of spray room temperature, and continuous production is advantageously implemented intelligence, preheating caused by cooling zone
It can be used for the drying of desiliconization mine (group) mine, desiliconization lye is Ke Xunhuanliyong, save the cost, improves production efficiency.
Summary of the invention
The object of the present invention is to provide a kind of bauxite Brown Alundum calcining-desiliconization integration tunnel ovens.The present invention
Equipment can be achieved at the same time calcining and desiliconization, especially used with new process matching, there is high in machining efficiency, more energy efficient ring
It protects, and the lower feature of desiliconization cost.
Technical solution of the present invention: a kind of bauxite Brown Alundum calcining-desiliconization integration tunnel oven, from kiln tail to kiln hood
It is followed successively by preheating section, furnace zone, cooling section and spray section；Top in the spray section is equipped with spray tube, and spray tube is equipped with
Nozzle, one end of spray tube are connected on lye sprinkling equipment after stretching out rotary kiln；The kiln wall of the spray section is equipped with several
The lower section of liquid-leaking nozzle, spray section is equipped with collecting tank.
The outside of bauxite Brown Alundum calcining above-mentioned-desiliconization integration tunnel oven, the spray section is pressed from both sides equipped with liquid collecting
Set, liquid collecting collet are equipped with opening close to the side of kiln hood.
Bauxite Brown Alundum calcining above-mentioned-desiliconization integration tunnel oven, the opening is mouth, and open is minimum
End is located in collecting tank.
Bauxite Brown Alundum calcining above-mentioned-desiliconization integration tunnel oven, the bottom of the collecting tank is connected with drain
Pipe, drain pipe are equipped with tapping valve.
Included the following steps: using the technique that above equipment is calcined
1) Powder bauxite is ground uniform；
2) it is added water into miberal powder to form, and be then pressed into block, obtain A product；
3) A product are first preheated in rotary kiln preheating section, then moves to furnace zone dehydration 0.5-1.5h, obtains B product；
4) B product are moved into cooling section and is cooled to 150-250 DEG C, obtain C product；
5) spray section then is moved to, lye is sprayed on C product and carries out desiliconization, obtains D product；
6) conventional smelt up to Brown Alundum is carried out after being dehydrated D product again.
And the lye of spray section spray can be recycled by collecting tank.
Beneficial effects of the present invention
By setting gradually preheating section, furnace zone, cooling section and spray section, the bauxite that block (group) shape is made successively passes through the present invention
After preheating, roasting, cooling and spray can desiliconization, compared with traditional powdery desiliconization equipment, equipment of the invention can be real simultaneously
Now to the calcining and desiliconization of block (group) shape bauxite, processing efficiency is substantially increased；Further, since being block (group) shape material, lye
It will not mix with bauxite, but directly be recycled from the collecting tank below spray section, substantially reduce process time,
It improves into and produces efficiency, energy conservation and environmental protection.The fine ore for especially realizing that grade reduces is produced for Brown Alundum, widens raw material selection model
It encloses.
Detailed description of the invention
Attached drawing 1 is the structural schematic diagram of equipment of the invention.
Description of symbols: 1- preheating section, 2- furnace zone, 3- cooling section, 4- spray section, 5- spray tube door, 6- nozzle, 7-
Liquid-leaking nozzle, 8- liquid collecting collet, 9- collecting tank, 10- is open, 11- drain pipe, 12- tapping valve.
Specific embodiment
Below with reference to embodiment, the present invention is further illustrated, but is not intended as the foundation limited the present invention.
The embodiment of the present invention
A kind of bauxite Brown Alundum calcining-desiliconization integration tunnel oven is followed successively by pre- as shown in Fig. 1 from kiln tail to kiln hood
Hot arc 1, furnace zone 2, cooling section 3 and spray section 4, preheating section 1, the structure of furnace zone 2 and cooling section 3 and working method and biography
Rotary kiln of uniting is consistent；Difference is: the top in the spray section 4 is equipped with spray tube 5, and spray tube 5 is equipped with existing nozzle
6, one end of spray tube 5 is connected on lye sprinkling equipment after stretching out rotary kiln, and lye sprinkling equipment includes booster pump and lye
The water outlet of case, booster pump connects spray tube 5, and water inlet is connected in lye tank；The kiln wall of the spray section 4 is equipped with several
Liquid-leaking nozzle 7, the aperture of liquid-leaking nozzle 7 are much smaller than the size of blocky bauxite, it is ensured that desiliconization liquid passes through, under spray section 4
Side is equipped with collecting tank 9.
Working principle: in use, first grinding Powder bauxite uniformly according to processing technology, then block (group) is made, by block
(group) material, which is placed in preheating section 1, to be preheated, and roasting in furnace zone 2 is transferred to after preheated, is transferred to cooling after roasting
It is cooling in section 3, it is finally transferred in spray section 4, lye is filled in spray tube 5 by lye sprinkling equipment, then through nozzle 6
Block (group) material downwards carries out spray desiliconization, flows into lower section after lye spray, directly filters out, then through the liquid-leaking nozzle on kiln wall
7 leakages are into the collecting tank 9 of lower section, can utilize again after desiliconization in collecting tank containing silicon liquid.
Preferably, the outside of the spray section 4 is equipped with liquid collecting collet 8, liquid collecting collet 8 is equipped with spacious close to the side of kiln hood
Mouthfuls 10, since rotary kiln itself has certain inclination angle, kiln hood end is lower, therefore, liquid collecting collet 8 can by the desiliconization liquid of leakage into
It drains into collecting tank 9 and is recycled from opening 10 after row drainage.
Preferably, described open 10 be mouth, the least significant end of opening 10 is located in collecting tank 9, it is easier to desiliconization liquid
Discharge, and collecting effect is more preferable.
Preferably, the bottom of the collecting tank 9 is connected with drain pipe 11, drain pipe 11 is equipped with tapping valve 12, works as collection
Desiliconization liquid in liquid bath 9 be collected into it is a certain amount of after, can be discharged carry out desiliconization processing, realize recycling for lye.
Claims (4)
1. a kind of bauxite Brown Alundum calcining-desiliconization integration tunnel oven, it is characterised in that: be followed successively by from kiln tail to kiln hood pre-
Hot arc (1), furnace zone (2), cooling section (3) and spray section (4)；Top in the spray section (4) is equipped with spray tube (5), spray
Shower pipe (5) is equipped with nozzle (6), and one end of spray tube (5) is connected on lye sprinkling equipment after stretching out rotary kiln；The spray
The kiln wall of section (4) is equipped with several liquid-leaking nozzles (7), and the lower section of spray section (4) is equipped with collecting tank (9).
2. bauxite Brown Alundum calcining according to claim 1-desiliconization integration tunnel oven, it is characterised in that: described
The outside of spray section (4) is equipped with liquid collecting collet (8), and liquid collecting collet (8) is equipped with open (10) close to the side of kiln hood.
3. bauxite Brown Alundum calcining according to claim 2-desiliconization integration tunnel oven, it is characterised in that: described
Open (10) are horn mouth, and the least significant end of open (10) is located in collecting tank (9).
4. bauxite Brown Alundum calcining according to claim 1-desiliconization integration tunnel oven, it is characterised in that: described
The bottom of collecting tank (9) is connected with drain pipe (11), and drain pipe (11) is equipped with tapping valve (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910819106.7A CN110425870A (en) | 2019-08-30 | 2019-08-30 | A kind of bauxite Brown Alundum calcining-desiliconization integration tunnel oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910819106.7A CN110425870A (en) | 2019-08-30 | 2019-08-30 | A kind of bauxite Brown Alundum calcining-desiliconization integration tunnel oven |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110425870A true CN110425870A (en) | 2019-11-08 |
Family
ID=68418362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910819106.7A Pending CN110425870A (en) | 2019-08-30 | 2019-08-30 | A kind of bauxite Brown Alundum calcining-desiliconization integration tunnel oven |
Country Status (1)
| Country | Link |
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| CN (1) | CN110425870A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112939041A (en) * | 2021-02-11 | 2021-06-11 | 贵州大学 | Method for strengthening low-grade bauxite desilication by using brown corundum fly ash |
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