CN103146910A - Mechanical navajoite roasting shaft kiln and roasting method - Google Patents
Mechanical navajoite roasting shaft kiln and roasting method Download PDFInfo
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- CN103146910A CN103146910A CN2013101181885A CN201310118188A CN103146910A CN 103146910 A CN103146910 A CN 103146910A CN 2013101181885 A CN2013101181885 A CN 2013101181885A CN 201310118188 A CN201310118188 A CN 201310118188A CN 103146910 A CN103146910 A CN 103146910A
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 48
- 238000010438 heat treatment Methods 0.000 claims abstract description 32
- 238000012544 monitoring process Methods 0.000 claims abstract description 32
- 238000001816 cooling Methods 0.000 claims abstract description 27
- 239000007789 gas Substances 0.000 claims description 36
- 230000001590 oxidative effect Effects 0.000 claims description 12
- 239000004744 fabric Substances 0.000 claims description 7
- 239000000779 smoke Substances 0.000 claims description 7
- 239000003546 flue gas Substances 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 claims description 6
- 238000006213 oxygenation reaction Methods 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 6
- 238000005245 sintering Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims 2
- 238000007599 discharging Methods 0.000 abstract description 5
- 239000003245 coal Substances 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000004575 stone Substances 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 3
- 238000009413 insulation Methods 0.000 abstract 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 8
- 229910052760 oxygen Inorganic materials 0.000 description 8
- 239000001301 oxygen Substances 0.000 description 8
- 229910052720 vanadium Inorganic materials 0.000 description 8
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 229940037003 alum Drugs 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000007600 charging Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 230000000192 social effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The invention discloses a mechanical navajoite roasting shaft kiln and a roasting method. The roasting shaft kiln comprises a vertical kiln body and a temperature monitoring system used for monitoring the kiln body, wherein the bottom of the kiln body is provided with a discharging system; an unloader is arranged above the discharging system; a cooling chamber is arranged in the kiln body between the unloader and the discharging system; the kiln body above the unloader is provided with a material distribution machine rail and a material distribution machine moving along the material distribution machine rail; a roasting thermal-insulation chamber is arranged in the kiln body between the material distribution machine and the unloader; an air preheating cavity is arranged in the kiln body wall around the roasting thermal-insulation chamber and the cooling chamber; the air preheating cavity is communicated with the roasting thermal-insulation chamber via a preheated air outlet; and the air preheating cavity is also communicated with an air blower via a blast pipe. The roasting shaft kiln is a mechanical shaft kiln without an external heating source, a navajoite ball is roasted by the self heat of the stone coal navajoite, a great quantity of energy is saved, and the problems of high production cost, big resource waste and big tail gas discharge of the shaft kiln with the external heat source are solved.
Description
Technical field
The present invention relates to navajoite stone technical field of smelting, the particularly stove used of a kind of navajoite oxidizing roasting, and the roasting method that adopts this stove.
Background technology
Vanadium is important strategic resource, vanadium adds in metal such as steel with micro alloying element, can improve intensity, hardness and the wear resistance of steel, it is one of element indispensable in Development of Novel microalloying steel, along with the widespread use of vanadium in fields such as metallurgy, chemical industry, new forms of energy, exploitation Rock coal containing alum Mineral resources have great economy and social effect.
In process for extracting vanadium, navajoite stone will carry out oxidizing roasting in the oxidizing roasting stove.The shaft kiln of the normally flat kiln of traditional oxidizing roasting stove or external heat source, the not environmental protection of flat kiln, and roasting conversion rate is low, and the waste resource should be eliminated by country's " vanadium and titanium resources comprehensive utilization and industry development " 12 " planning " clear; And the shaft kiln of the external heat source fat coal that need to burn had both increased production cost, did not meet again the state basic policy (because the exhaust emissions amount is large) of energy-saving and emission-reduction.
Summary of the invention
The purpose of this invention is to provide a kind of mechanize navajoite roasting shaft kiln and roasting method, solve that traditional shaft kiln wasting of resources is large, production cost is high, do not meet the technical problem that energy-saving and emission-reduction require.
For achieving the above object, the present invention adopts following technical scheme: a kind of mechanize navajoite roasting shaft kiln, comprise the temperature monitoring system that vertical kiln body and monitoring kiln body are used, the top of described kiln body is provided with exhaust gases passes, and exhaust gases passes is communicated with induced draft fan, it is characterized in that: the bottom of described kiln body is provided with discharge system, and the top of discharge system is provided with unloading machine, and the inside of the kiln body between unloading machine and discharge system is cooling room; The kiln body of described unloading machine top is provided with the material distributing machine track and along the material distributing machine of material distributing machine rail moving, and the inside of the kiln body between material distributing machine and unloading machine is the roasting moist closet; Be provided with air-pre-heating cavity in kiln body wall around described roasting moist closet and cooling room, air-pre-heating cavity exports with the roasting moist closet by preheated air and is communicated with, and air-pre-heating cavity also is communicated with gas blower by blast tube; The kiln body wall of described air-pre-heating cavity top is provided with fire door, and other being provided with of the fire door of the outside of described kiln body, kiln body seen firer's operator's console.
Described roasting moist closet can be divided into bottom moist closet and roasting chamber, top two portions, and bottom moist closet and roasting chamber, top are separated by by fire bars.
Described preheated air outlet can be located at the top of bottom moist closet and the bottom of roasting chamber, top.
Can be provided with oxygen-increasing device on described blast tube.
Described fire door can be located at the left and right sides of kiln body, and the described firer's of seeing operator's console also is arranged on the left and right sides of kiln body.
Described kiln body can be square.
A kind of roasting method of using above-mentioned mechanize navajoite roasting shaft kiln is characterized in that step is as follows: step 1, by apparatus for making pearl ball, navajoite roasting material is made the navajoite ball, send in the hopper of material distributing machine; Step 2, the material distributing machine of filling the navajoite ball are sailed the inside of kiln body into, and the navajoite ball in hopper are evenly distributed in the roasting moist closet along the material distributing machine track; Step 3, unlatching gas blower are sent air to air-pre-heating cavity, and air is preheating in air-pre-heating cavity, becomes preheated air, and preheated air exports by preheated air and enters the roasting moist closet; Step 4, unlatching induced draft fan are expelled to smoke processing system by exhaust gases passes with the flue gas in the kiln body, and the temperature of the interior roasting moist closet of maintenance kiln body is at 700 ℃～900 ℃; Step 5, cloth be after 30 minutes to 60 minutes, sees the firer stands in to see on firer's operator's console, opens fire door and stir the navajoite ball that burns in the roasting moist closet with drill rod, prevents roasting navajoite ball sintering, improves the oxidizing roasting uniformity coefficient; Step 6, navajoite ball in the roasting moist closet roasting and be incubated 2～6 hours after, start unloading machine, the navajoite ball in the roasting moist closet is discharged into cooling room; Step 7, startup discharge system transport kiln discharge with the navajoite ball in cooling room external; Step 8, the normal operation that keeps gas blower and induced draft fan, the start-up temperature supervisory system, monitor kiln temperature by temperature monitoring system, and regulate wind speed and the blast of the wind speed of induced draft fan and blast, gas blower by temperature monitoring system, temperature in assurance roasting moist closet is at 700 ℃～900 ℃, repeating step one, step 2, step 5, step 6 and step 7 so move in circles, and mechanize navajoite roasting shaft kiln enters the normal and continuous operation state.
Can be provided with oxygen-increasing device on described blast tube, in step 3, also will open oxygen-increasing device, in step 8, also will regulate by temperature monitoring system the oxygenation amount of oxygen-increasing device.
The another kind of roasting method of using above-mentioned mechanize navajoite roasting shaft kiln is characterized in that step is as follows: step 1, by apparatus for making pearl ball, navajoite roasting material is made the navajoite ball, send in the hopper of material distributing machine; Step 2, the material distributing machine of filling the navajoite ball are sailed the inside of kiln body into, and the navajoite ball in hopper are evenly distributed in the roasting chamber, top along the material distributing machine track; Step 3, unlatching gas blower are sent air to air-pre-heating cavity, and air is preheating in air-pre-heating cavity, becomes preheated air, and preheated air exports by preheated air and enters bottom moist closet and roasting chamber, top; Step 4, unlatching induced draft fan are expelled to smoke processing system by exhaust gases passes with the flue gas in the kiln body, and the temperature of the interior roasting moist closet of maintenance kiln body is at 700 ℃～900 ℃; Step 5, cloth be after 30 minutes to 60 minutes, sees the firer stands in to see on firer's operator's console, opens fire door and stir the navajoite ball that burns in the roasting chamber, top with drill rod, prevents roasting navajoite ball sintering, improves the oxidizing roasting uniformity coefficient; Step 6, when the roasting after 1～2 hour in the roasting chamber, top of navajoite ball, be discharged into to the bottom moist closet and deposited 2～4 hours, and then start unloading machine, the navajoite ball in the moist closet of bottom is discharged into cooling room; Step 7, startup discharge system transport kiln discharge with the navajoite ball in cooling room external; Step 8, the normal operation that keeps gas blower and induced draft fan, the start-up temperature supervisory system, monitor kiln temperature by temperature monitoring system, and regulate wind speed and the blast of the wind speed of induced draft fan 1 and blast, gas blower by temperature monitoring system, temperature in assurance roasting moist closet is at 700 ℃～900 ℃, repeating step one, step 2, step 5, step 6 and step 7 so move in circles, and mechanize navajoite roasting shaft kiln enters the normal and continuous operation state.
Can be provided with oxygen-increasing device on described blast tube, in step 3, also will open oxygen-increasing device, in step 8, also will regulate by temperature monitoring system the oxygenation amount of oxygen-increasing device.
Compared with prior art the present invention has following characteristics and beneficial effect: the shaft kiln described in the present invention is a kind of mechanized cement shaft kiln that does not need external heat source, it utilizes the heat of bone coal navajoite self to carry out navajoite ball roasting (oxidizing roasting), saved a large amount of energy, so both solved the problem of the not environmental protection of flat kiln and waste resource, solved again the problem that the shaft kiln production cost is high, the wasting of resources is large, exhaust emissions is large of external heat source.
The present invention is provided with air-pre-heating cavity, and the heat that has effectively utilized cooling room and roasting moist closet to distribute with sending into the roasting moist closet after air (sometimes also comprising oxygen) preheating, has been accelerated rate of roasting, has guaranteed the homogeneity of roasting.
The present invention is provided with oxygen-increasing device, increases the oxygen level of air-pre-heating cavity, makes the oxygen of roasting moist closet and carbon dioxide ratio adjustable, has guaranteed the roasting atmosphere of roasting moist closet, more is conducive to the oxidation of vanadium in ore.Simultaneously, after content of oxygen in air increased, the air capacity that enters in kiln can correspondingly reduce, thereby has reduced smoke discharge amount.
The present invention is arranged on the below of roasting chamber, close top, kiln body middle part and the top position of bottom moist closet with the preheated air outlet, has greatly reduced like this air intake resistance of roasting moist closet.
The present invention adopts mechanize charging, discharging, discharging, manually sees fire, both guaranteed each process operations precisely, can guarantee with skilled labor's experience again the homogeneity of roasting to guarantee the roasting process non-clotted slag.
The transformation efficiency of vanadium roasted ore ball of the present invention can reach more than 90%, higher than 20 to 35 percentage points, other vanadium oxidization roasting kilns.Greatly improve resource utilization.
Working cost of the present invention is low, and the motor-driven rate of the induced draft fan of installing and air blast is little, only is equivalent to 50% of external heat source shaft kiln, saves power consumption.
Description of drawings
The present invention will be further described in detail below in conjunction with accompanying drawing.
Fig. 1 is main TV structure schematic diagram of the present invention.
Fig. 2 is that schematic diagram is looked on the left side of Fig. 1.
Reference numeral: 1-exhaust gases passes, 2-kiln body, 3-fire door, 4-unloading machine, 5-discharge system, roasting chamber, 6-top, 7-fire bars, 8-air-pre-heating cavity, the outlet of 9-preheated air, 10-bottom moist closet, 11-cooling room, 12-induced draft fan, 13-material distributing machine, 14-material distributing machine track, 15-see firer's operator's console, 16-blast tube, 17-temperature monitoring system, 18-oxygen-increasing device, 19-gas blower.
Embodiment
Embodiment is referring to Fig. 1, shown in Figure 2, this mechanize navajoite roasting shaft kiln, the temperature monitoring system 17 that comprises vertical kiln body 2 and monitoring kiln body 2 use, the top of described kiln body 2 is provided with exhaust gases passes 1, and exhaust gases passes 1 is communicated with induced draft fan 12, described temperature monitoring system 17 feeds back temperature in the kiln body by the sensor that is arranged on kiln body each position, and controls wind speed and the blast of induced draft fan 12 and gas blower 19, makes to keep suitable maturing temperature in kiln.
The bottom of described kiln body 2 is provided with discharge system 5, and the top of discharge system 5 is provided with unloading machine 4, and the inside of the kiln body between unloading machine 4 and discharge system 5 is cooling room 11.It is cooling that unloading machine 4 is discharged into cooling room for the roasting material with the roasting moist closet.
The material distributing machine 13 that the kiln body 2 of described unloading machine 4 tops is provided with material distributing machine track 14 and moves along material distributing machine track 14, and the inside of the kiln body between material distributing machine 13 and unloading machine 4 is the roasting moist closet.Described material distributing machine 13 kiln is external install the roasting material after, enter the kiln body along material distributing machine track 14 inner, be evenly arranged the roasting material, cloth rolls away to kiln external along material distributing machine track 14 after finishing.
Be provided with the left and right sides that air-pre-heating cavity 8(can be provided in a side of roasting moist closet and cooling room in kiln body wall around described roasting moist closet and cooling room 11, can be also that surrounding at roasting moist closet and cooling room has), air-pre-heating cavity 8 exports 9 by preheated air and is communicated with the roasting moist closet, and air-pre-heating cavity 8 also is communicated with gas blower 19 by the blast tube 16 that is provided with oxygen-increasing device 18.In air-pre-heating cavity 8, enter by the outside heat that the air of air-pre-heating cavity and oxygen and roasting moist closet and cooling room comes out and carry out heat exchange, air and oxygen that the outside enters air-pre-heating cavity can be preheated the preheated air that becomes oxygen enrichment in air-pre-heating cavity 8, then export 9 by preheated air and enter the roasting moist closet, guarantee the required oxygen of oxidizing roasting in the roasting moist closet.
The kiln body wall of described air-pre-heating cavity 8 tops is provided with fire door 3, and other being provided with of fire door 3 of the outside of described kiln body 2, kiln body 2 seen firer's operator's console 15.As most preferred embodiment, the kiln body 2 in the present embodiment is square, and fire door 3 is located at the left and right sides of kiln body 2, sees that firer's operator's console 15 also is arranged on the left and right sides of kiln body 2.
As most preferred embodiment, the roasting moist closet in the present embodiment is divided into bottom moist closet 10 and roasting chamber, top 6 two portions, and bottom moist closet 10 is separated by by fire bars 7 with roasting chamber, top 6.That is to say, fire bars separates roasting chamber, top 6 with bottom moist closet 10, when baked navajoite ball descends, due to the obstruction of fire bars, after producing upset, then falls into bottom moist closet 10.In the present embodiment, preheated air outlet 9 is located at the top of bottom moist closet 10 and the bottom of roasting chamber, top 6, and preheated air outlet 9 respectively is provided with one deck on the top of bottom moist closet 10 and the bottom of roasting chamber, top 6, in other embodiments, the number of plies of the preheated air of the bottom of the top of bottom moist closet 10 and roasting chamber, top 6 outlet 9 can be also two-layer, three layers or more.
In other embodiments, also can not establish fire bars 7 and oxygen-increasing device 18.
When not establishing fire bars 7 in the kiln body, the step of roasting method of having used mechanize navajoite roasting shaft kiln is as follows.
Step 4, unlatching induced draft fan 12 are expelled to smoke processing system by exhaust gases passes 1 with the flue gases in kiln body 2, and the temperature of maintenance kiln body 2 interior roasting moist closets is at 700 ℃～900 ℃.
When blast tube 16 is provided with oxygen-increasing device 18, in step 3, also to open oxygen-increasing device 18, in step 8, also will be by the oxygenation amount of temperature monitoring system 17 adjusting oxygen-increasing devices 18.
When being provided with fire bars 7 in the kiln body, the step of roasting method of having used mechanize navajoite roasting shaft kiln is as follows.
Step 4, unlatching induced draft fan 12 are expelled to smoke processing system by exhaust gases passes 1 with the flue gases in kiln body 2, and the temperature of maintenance kiln body 2 interior roasting moist closets is at 700 ℃～900 ℃.
When blast tube 16 is provided with oxygen-increasing device 18, in step 3, also to open oxygen-increasing device 18, in step 8, also will be by the oxygenation amount of temperature monitoring system 17 adjusting oxygen-increasing devices 18.
Claims (10)
1. mechanize navajoite roasting shaft kiln, the temperature monitoring system (17) that comprises vertical kiln body (2) and monitoring kiln body (2) use, the top of described kiln body (2) is provided with exhaust gases passes (1), and exhaust gases passes (1) is communicated with induced draft fan (12), it is characterized in that: the bottom of described kiln body (2) is provided with discharge system (5), the top of discharge system (5) is provided with unloading machine (4), and the inside of the kiln body between unloading machine (4) and discharge system (5) is cooling room (11);
The material distributing machine (13) that the kiln body (2) of described unloading machine (4) top is provided with material distributing machine track (14) and moves along material distributing machine track (14), and the inside of the kiln body between material distributing machine (13) and unloading machine (4) is the roasting moist closet;
Be provided with air-pre-heating cavity (8) in described roasting moist closet and cooling room (11) kiln body wall on every side, air-pre-heating cavity (8) exports (9) by preheated air and is communicated with the roasting moist closet, and air-pre-heating cavity (8) also is communicated with gas blower (19) by blast tube (16);
The kiln body wall of described air-pre-heating cavity (8) top is provided with fire door (3), and other being provided with of the fire door (3) of the outside of described kiln body (2), kiln body (2) seen firer's operator's console (15).
2. mechanize navajoite roasting shaft kiln according to claim 1, it is characterized in that: described roasting moist closet is divided into bottom moist closet (10) and roasting chamber, top (6) two portions, and bottom moist closet (10) is separated by by fire bars (7) with roasting chamber, top (6).
3. mechanize navajoite roasting shaft kiln according to claim 2 is characterized in that: described preheated air outlet (9) is located at the top of bottom moist closet (10) and the bottom of roasting chamber, top (6).
4. mechanize navajoite roasting shaft kiln according to claim 1, it is characterized in that: described blast tube (16) is provided with oxygen-increasing device (18).
5. mechanize navajoite roasting shaft kiln according to claim 1, it is characterized in that: described fire door (3) is located at the left and right sides of kiln body (2), and the described firer's of seeing operator's console (15) also is arranged on the left and right sides of kiln body (2).
6. mechanize navajoite roasting shaft kiln according to claim 1 is characterized in that: described kiln body (2) is for square.
7. roasting method of using the mechanize navajoite roasting shaft kiln described in the claims 1 is characterized in that step is as follows:
Step 1, by apparatus for making pearl ball, navajoite roasting material is made the navajoite ball, send in the hopper of material distributing machine (13);
Step 2, the material distributing machine (13) of filling the navajoite ball are sailed the inside of kiln body (2) into, and the navajoite ball in hopper are evenly distributed in the roasting chamber along material distributing machine track (14);
Step 3, unlatching gas blower (19) are sent air to air-pre-heating cavity (8), and air preheating in air-pre-heating cavity (8) becomes preheated air, and preheated air exports (9) by preheated air again and enters the roasting moist closet;
Step 4, unlatching induced draft fan (12) are expelled to smoke processing system by exhaust gases passes (1) with the flue gas in kiln body (2), and the temperature of the interior roasting moist closet of maintenance kiln body (2) is at 700 ℃～900 ℃;
Step 5, cloth be after 30 minutes to 60 minutes, sees the firer stands in to see on firer's operator's console (15), opens fire door (3) and stir the navajoite ball that burns in the roasting moist closet with drill rod, prevents roasting navajoite ball sintering, improves the oxidizing roasting uniformity coefficient;
Step 6, navajoite ball in the roasting moist closet roasting and be incubated 2～6 hours after, start unloading machine (4), the navajoite ball in the roasting moist closet is discharged into cooling room (11);
Step 7, startup discharge system (5) transport kiln discharge with the navajoite ball in cooling room (11) external;
Step 8, the normal operation that keeps gas blower (19) and induced draft fan (12), start-up temperature supervisory system (17), by temperature monitoring system (17) monitoring kiln temperature, and regulate wind speed and the blast of the wind speed of induced draft fan (12) and blast, gas blower (19) by temperature monitoring system (17), temperature in assurance roasting moist closet is at 700 ℃～900 ℃, repeating step one, step 2, step 5, step 6 and step 7, so move in circles, mechanize navajoite roasting shaft kiln enters the normal and continuous operation state.
8. the roasting method of mechanize navajoite roasting shaft kiln according to claim 7, it is characterized in that: blast tube (16) is provided with oxygen-increasing device (18), in step 3, also to open oxygen-increasing device (18), in step 8, also to pass through the oxygenation amount that temperature monitoring system (17) is regulated oxygen-increasing device (18).
9. roasting method of using the mechanize navajoite roasting shaft kiln described in the claims 2 is characterized in that step is as follows:
Step 1, by apparatus for making pearl ball, navajoite roasting material is made the navajoite ball, send in the hopper of material distributing machine (13);
Step 2, the material distributing machine (13) of filling the navajoite ball are sailed the inside of kiln body (2) into, and the navajoite ball in hopper are evenly distributed in roasting chamber, top (6) along material distributing machine track (14);
Step 3, unlatching gas blower (19), send air to air-pre-heating cavity (8), air preheating in air-pre-heating cavity (8) becomes preheated air, and preheated air exports (9) by preheated air again and enters bottom moist closet (10) and roasting chamber, top (6);
Step 4, unlatching induced draft fan (12) are expelled to smoke processing system by exhaust gases passes (1) with the flue gas in kiln body (2), and the temperature of the interior roasting moist closet of maintenance kiln body (2) is 700 ℃～900 ℃;
Step 5, cloth be after 30 minutes to 60 minutes, sees the firer stands in to see on firer's operator's console (15), opens fire door (3) and stir the navajoite ball of burning in roasting chamber, top (6) with drill rod, prevents roasting navajoite ball sintering, improves the oxidizing roasting uniformity coefficient;
Step 6, when the roasting after 1～2 hour in roasting chamber, top (6) of navajoite ball, be discharged into to bottom moist closet (10) and deposited 2～4 hours, and then start unloading machine (4), the navajoite ball in bottom moist closet (10) is discharged into cooling room (11);
Step 7, startup discharge system (5) transport kiln discharge with the navajoite ball in cooling room (11) external;
Step 8, the normal operation that keeps gas blower (19) and induced draft fan (12), start-up temperature supervisory system (17), by temperature monitoring system (17) monitoring kiln temperature, and regulate wind speed and the blast of the wind speed of induced draft fan (12) and blast, gas blower (19) by temperature monitoring system (17), temperature in assurance roasting moist closet is at 700 ℃～900 ℃, repeating step one, step 2, step 5, step 6 and step 7, so move in circles, mechanize navajoite roasting shaft kiln enters the normal and continuous operation state.
10. the roasting method of mechanize navajoite roasting shaft kiln according to claim 9, it is characterized in that: blast tube (16) is provided with oxygen-increasing device (18), in step 3, also to open oxygen-increasing device (18), in step 8, also to pass through the oxygenation amount that temperature monitoring system (17) is regulated oxygen-increasing device (18).
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108193045A (en) * | 2018-04-03 | 2018-06-22 | 湖北汇锂新能源科技有限公司 | A kind of lithium ore mechanization calcining kiln and its method of roasting |
| CN108239688A (en) * | 2018-03-30 | 2018-07-03 | 胡俊旭 | A kind of microwave reduction shaft kiln and its restoring method |
| CN109253623A (en) * | 2017-07-12 | 2019-01-22 | 上海宝钢工业技术服务有限公司 | V2O5The furnace tail barrier wall structure of fuse piece furnace |
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| CN203163469U (en) * | 2013-04-08 | 2013-08-28 | 老河口市绿华环保科技有限公司 | Mechanization shaft kiln for roasting navajoite |
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| CN100416202C (en) * | 2005-04-06 | 2008-09-03 | 缪建通 | Large diameter energy-saving mechanical vertical kiln |
| CN201392089Y (en) * | 2009-01-15 | 2010-01-27 | 周苏明 | Mechanical upright kiln for refining vanadium by sodium roasting |
| CN101736170A (en) * | 2009-12-30 | 2010-06-16 | 湖北郧西隆昌钒业有限公司 | Environment-friendly method for vanadium extraction by composite roasting in shaft kiln |
| CN203163469U (en) * | 2013-04-08 | 2013-08-28 | 老河口市绿华环保科技有限公司 | Mechanization shaft kiln for roasting navajoite |
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| CN109253623A (en) * | 2017-07-12 | 2019-01-22 | 上海宝钢工业技术服务有限公司 | V2O5The furnace tail barrier wall structure of fuse piece furnace |
| CN108239688A (en) * | 2018-03-30 | 2018-07-03 | 胡俊旭 | A kind of microwave reduction shaft kiln and its restoring method |
| CN108239688B (en) * | 2018-03-30 | 2023-05-30 | 株洲聚润合微波工业炉有限公司 | Microwave reduction vertical kiln and reduction method thereof |
| CN108193045A (en) * | 2018-04-03 | 2018-06-22 | 湖北汇锂新能源科技有限公司 | A kind of lithium ore mechanization calcining kiln and its method of roasting |
Also Published As
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| CN103146910B (en) | 2014-06-04 |
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