CN103146910B - Mechanical navajoite roasting shaft kiln and roasting method - Google Patents

Mechanical navajoite roasting shaft kiln and roasting method Download PDF

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CN103146910B
CN103146910B CN201310118188.5A CN201310118188A CN103146910B CN 103146910 B CN103146910 B CN 103146910B CN 201310118188 A CN201310118188 A CN 201310118188A CN 103146910 B CN103146910 B CN 103146910B
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roasting
navajoite
kiln body
kiln
ball
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CN103146910A (en
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侯作义
张衍林
周万明
董鑫
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Hubei Huili New Energy Technology Co ltd
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LAOHEKOU LVHUA ENVIRONMENTAL PROTECTION TECHNOLOGY Co Ltd
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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

Mechanize navajoite roasting shaft kiln and roasting method
Technical field
The present invention relates to navajoite stone technical field of smelting, the stove that particularly a kind of navajoite oxidizing roasting is used, and adopt the roasting method of this stove.
Background technology
Vanadium is important strategic resource, vanadium adds metal as in 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 vanadium is in the widespread use in the 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 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, waste resource, and quilt country " vanadium and titanium resources comprehensive utilization and industry development " 12 " planning " clearly regulation should eliminate; And the shaft kiln of the external heat source fat coal that need to burn had both increased production cost, do not meet again the state basic policy (because exhaust emissions amount is large) of energy-saving and emission-reduction.
Summary of the invention
The object 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, 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 material distributing machine track and the material distributing machine along material distributing machine rail moving, and the inside of kiln body between material distributing machine and unloading machine is roasting moist closet; In described roasting moist closet and cooling room kiln body wall around, be provided with air-pre-heating cavity, air-pre-heating cavity is exported with roasting moist closet and is communicated with by preheated air, and air-pre-heating cavity is also communicated with gas blower by blast tube; The kiln body wall of described air-pre-heating cavity top is provided with fire door, and the outside of described kiln body, other being provided with of the fire door of kiln body are seen firer's operator's console.
Described roasting moist closet can be divided into bottom moist closet and top roasting chamber two portions, and bottom moist closet and top roasting chamber are separated by by fire bars.
Described preheated air outlet can be located at the top of bottom moist closet and the bottom of top roasting chamber.
On described blast tube, can be provided with oxygen-increasing device.
Described fire door can be located at the left and right sides of kiln body, described in see that firer's operator's console is also arranged on the left and right sides of kiln body.
Described kiln body can be square.
Apply a roasting method for above-mentioned mechanize navajoite roasting shaft kiln, it is characterized in that step is as follows: step 1, by apparatus for making pearl ball, navajoite roasting material is made to navajoite ball, send in the hopper of material distributing machine; Step 2, fill the material distributing machine of navajoite ball is sailed kiln body into inside along material distributing machine track, and the navajoite ball in hopper is evenly distributed in roasting moist closet; Step 3, unlatching gas blower, send air to air-pre-heating cavity, and air is preheating in air-pre-heating cavity, becomes preheated air, and preheated air is exported and entered roasting moist closet by preheated air again; Step 4, unlatching induced draft fan, be expelled to smoke processing system by exhaust gases passes by the flue gas in kiln body, and keep the temperature of roasting moist closet in kiln body at 700 ℃~900 ℃; Step 5, cloth be after 30 minutes to 60 minutes, sees firer stands in to see on firer's operator's console, opens fire door and stir the navajoite ball burning in roasting moist closet with drill rod, prevents roasting navajoite ball sintering, improves oxidizing roasting uniformity coefficient; Step 6, navajoite ball in roasting moist closet roasting and insulation 2~6 hours after, start unloading machine, the navajoite ball in roasting moist closet is discharged into cooling room; Step 7, startup discharge system, transport kiln discharge by the navajoite ball in cooling room external; Step 8, the normal work that keeps gas blower and induced draft fan, 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 normal and continuous operation state.
On described blast tube, can be provided with oxygen-increasing device, 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 roasting method of the above-mentioned mechanize navajoite roasting shaft kiln of another kind of application, is characterized in that step is as follows: step 1, by apparatus for making pearl ball, navajoite roasting material is made to navajoite ball, send in the hopper of material distributing machine; Step 2, fill the material distributing machine of navajoite ball is sailed kiln body into inside along material distributing machine track, and the navajoite ball in hopper is evenly distributed in the roasting chamber of top; Step 3, unlatching gas blower, send air to air-pre-heating cavity, and air is preheating in air-pre-heating cavity, becomes preheated air, and preheated air is exported and entered bottom moist closet and top roasting chamber by preheated air again; Step 4, unlatching induced draft fan, be expelled to smoke processing system by exhaust gases passes by the flue gas in kiln body, and keep the temperature of roasting moist closet in kiln body at 700 ℃~900 ℃; Step 5, cloth be after 30 minutes to 60 minutes, sees firer stands in to see on firer's operator's console, opens fire door and stir the navajoite ball burning in the roasting chamber of top with drill rod, prevents roasting navajoite ball sintering, improves oxidizing roasting uniformity coefficient; Step 6, when the roasting after 1~2 hour in the roasting chamber of top of navajoite ball, be discharged into bottom moist closet and deposit 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 by the navajoite ball in cooling room external; Step 8, the normal work that keeps gas blower and induced draft fan, 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 normal and continuous operation state.
On described blast tube, can be provided with oxygen-increasing device, 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), save 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 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, by sending into 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, is more conducive to the oxidation of vanadium in ore.Meanwhile, after content of oxygen in air increases, the air capacity entering in kiln can correspondingly reduce, thereby has reduced smoke discharge amount.
The present invention is arranged on kiln body middle part near the below of top roasting chamber and the top position of bottom moist closet by 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 and both guaranteed the accurate of each process operations by fire, can guarantee with skilled labor's experience again the homogeneity of roasting, guarantees 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, is only equivalent to 50% of external heat source shaft kiln, saves power consumption.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention will be further described in detail.
Fig. 1 is main TV structure schematic diagram of the present invention.
Fig. 2 is that schematic diagram is looked on a left side of Fig. 1.
Reference numeral: 1-exhaust gases passes, 2-kiln body, 3-fire door, 4-unloading machine, 5-discharge system, 6-top roasting chamber, 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 shown in Fig. 1, Fig. 2, this mechanize navajoite roasting shaft kiln, comprise the temperature monitoring system 17 of 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 the temperature in kiln body by the sensor that is arranged on the each position of kiln body, and controls wind speed and the blast of induced draft fan 12 and gas blower 19, makes the suitable maturing temperature of maintenance 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.Unloading machine 4 is cooling for the roasting material of roasting moist closet is discharged into cooling room.
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 kiln body between material distributing machine 13 and unloading machine 4 is roasting moist closet.Described material distributing machine 13 installs after roasting material kiln is external, enters kiln body inside along material distributing machine track 14, is evenly arranged roasting material, after cloth finishes, rolls away to kiln external along material distributing machine track 14.
In described roasting moist closet and cooling room 11 kiln body wall around, 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, also can be to have in the surrounding of roasting moist closet and cooling room), air-pre-heating cavity 8 exports 9 by preheated air and is communicated with roasting moist closet, and air-pre-heating cavity 8 is also 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 outside the 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 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 roasting moist closet, guarantee the required oxygen of oxidizing roasting in roasting moist closet.
The kiln body wall of described air-pre-heating cavity 8 tops is provided with fire door 3, and the outside of described kiln body 2, other being provided with of the fire door of kiln body 23 are 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 is also 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 top roasting chamber 6 two portions, and bottom moist closet 10 is separated by by fire bars 7 with top roasting chamber 6.That is to say, fire bars separates top roasting chamber 6 with bottom moist closet 10, when baked navajoite ball declines, due to the obstruction of fire bars, produces after 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 top roasting chamber 6, and the bottom of preheated air outlet 9 tops at bottom moist closet 10 and top roasting chamber 6 is respectively provided with one deck, in other embodiments, the number of plies of the preheated air of the bottom of the top of bottom moist closet 10 and top roasting chamber 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.
In the time not establishing fire bars 7 in kiln body, the step of roasting method of having applied mechanize navajoite roasting shaft kiln is as follows.
Step 1, by apparatus for making pearl ball, navajoite roasting material is made to navajoite ball, send in the hopper of material distributing machine 13.
Step 2, fill the material distributing machine 13 of navajoite ball is sailed kiln body 2 into inside along material distributing machine track 14, and the navajoite ball in hopper is evenly distributed in roasting moist closet.
Step 3, unlatching gas blower 19, send 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 roasting moist closet.
Step 4, unlatching induced draft fan 12, be expelled to smoke processing system by exhaust gases passes 1 by the flue gas in kiln body 2, and keep the temperature of the interior roasting moist closet of kiln body 2 at 700 ℃~900 ℃.
Step 5, cloth be after 30 minutes to 60 minutes, sees firer stands in to see on firer's operator's console 15, opens fire door 3 and stir the navajoite ball burning in roasting moist closet with drill rod, prevents roasting navajoite ball sintering, improves oxidizing roasting uniformity coefficient.
Step 6, navajoite ball in roasting moist closet roasting and insulation 2~6 hours after, start unloading machine 4, the navajoite ball in roasting moist closet is discharged into cooling room 11.
Step 7, startup discharge system 5, transport kiln discharge by the navajoite ball in cooling room 11 external.
Step 8, the normal work that keeps gas blower 19 and induced draft fan 12, start-up temperature supervisory system 17, monitor kiln temperature by temperature monitoring system 17, 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, and mechanize navajoite roasting shaft kiln enters normal and continuous operation state.
In the time 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 regulate by temperature monitoring system 17 the oxygenation amount of oxygen-increasing device 18.
In the time being provided with fire bars 7 in kiln body, the step of roasting method of having applied mechanize navajoite roasting shaft kiln is as follows.
Step 1, by apparatus for making pearl ball, navajoite roasting material is made to navajoite ball, send in the hopper of material distributing machine 13.
Step 2, fill the material distributing machine 13 of navajoite ball is sailed kiln body 2 into inside along material distributing machine track 14, and the navajoite ball in hopper is evenly distributed in top roasting chamber 6.
Step 3, unlatching gas blower 19, send 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 bottom moist closet 10 and top roasting chamber 6.
Step 4, unlatching induced draft fan 12, be expelled to smoke processing system by exhaust gases passes 1 by the flue gas in kiln body 2, and keep the temperature of the interior roasting moist closet of kiln body 2 at 700 ℃~900 ℃.
Step 5, cloth be after 30 minutes to 60 minutes, sees firer stands in to see on firer's operator's console 15, opens fire door 3 and stir the navajoite ball of burning in top roasting chamber 6 with drill rod, prevents roasting navajoite ball sintering, improves oxidizing roasting uniformity coefficient.
Step 6, when the roasting after 1~2 hour in top roasting chamber 6 of navajoite ball, be discharged into bottom moist closet 10 and deposit 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 external (to leaching operation) by the navajoite ball in cooling room 11;
Step 8, the normal work that keeps gas blower 19 and induced draft fan 12, start-up temperature supervisory system 17, monitor kiln temperature by temperature monitoring system 17, 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 (being bottom moist closet 10 and top roasting chamber 6) 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 normal and continuous operation state.
In the time 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 regulate by temperature monitoring system 17 the oxygenation amount of oxygen-increasing device 18.

Claims (8)

1. a mechanize navajoite roasting shaft kiln, comprise the temperature monitoring system (17) of 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 kiln body (2) of described unloading machine (4) top is provided with material distributing machine track (14) and along the mobile material distributing machine (13) of material distributing machine track (14), and the inside of kiln body between material distributing machine (13) and unloading machine (4) is roasting moist closet;
In described roasting moist closet and cooling room (11) kiln body wall around, be provided with air-pre-heating cavity (8), air-pre-heating cavity (8) exports (9) by preheated air and is communicated with roasting moist closet, and air-pre-heating cavity (8) is also 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 the outside of described kiln body (2), other being provided with of the fire door (3) of kiln body (2) are seen firer's operator's console (15);
Described roasting moist closet is divided into bottom moist closet (10) and top roasting chamber (6) two portions, and bottom moist closet (10) is separated by by fire bars (7) with top roasting chamber (6);
Described blast tube (16) is provided with oxygen-increasing device (18).
2. mechanize navajoite roasting shaft kiln according to claim 1, is characterized in that: described preheated air outlet (9) is located at the top of bottom moist closet (10) and the bottom of top roasting chamber (6).
3. mechanize navajoite roasting shaft kiln according to claim 1, is characterized in that: described fire door (3) is located at the left and right sides of kiln body (2), described in see that firer's operator's console (15) is also arranged on the left and right sides of kiln body (2).
4. mechanize navajoite roasting shaft kiln according to claim 1, is characterized in that: described kiln body (2) is for square.
5. a roasting method of applying 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 to navajoite ball, send in the hopper of material distributing machine (13);
Step 2, the material distributing machine (13) of filling navajoite ball are sailed the inside of kiln body (2) into, and the navajoite ball in hopper are evenly distributed in roasting chamber along material distributing machine track (14);
Step 3, unlatching gas blower (19), send 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 roasting moist closet;
Step 4, unlatching induced draft fan (12), be expelled to smoke processing system by exhaust gases passes (1) by the flue gas in kiln body (2), and keep the temperature of the interior roasting moist closet of kiln body (2) at 700 ℃~900 ℃;
Step 5, cloth be after 30 minutes to 60 minutes, sees firer stands in to see that firer's operator's console (15) is upper, opens fire door (3) and stir the navajoite ball burning in roasting moist closet with drill rod, prevents roasting navajoite ball sintering, improves oxidizing roasting uniformity coefficient;
Step 6, navajoite ball in roasting moist closet roasting and insulation 2~6 hours after, start unloading machine (4), the navajoite ball in roasting moist closet is discharged into cooling room (11);
Step 7, startup discharge system (5), transport kiln discharge by the navajoite ball in cooling room (11) external;
Step 8, the normal work 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 the wind speed of induced draft fan (12) and wind speed and the blast of 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 normal and continuous operation state.
6. the roasting method of mechanize navajoite roasting shaft kiln according to claim 5, it is characterized in that: in step 3, also to open oxygen-increasing device (18), in step 8, also will pass through the oxygenation amount of temperature monitoring system (17) adjusting oxygen-increasing device (18).
7. a roasting method of applying 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 to navajoite ball, send in the hopper of material distributing machine (13);
Step 2, the material distributing machine (13) of filling navajoite ball are sailed the inside of kiln body (2) into, and the navajoite ball in hopper are evenly distributed in top roasting chamber (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 top roasting chamber (6);
Step 4, open induced draft fan (12), by exhaust gases passes (1), the flue gas in kiln body (2) is expelled to smoke processing system, and to keep the temperature of the interior roasting moist closet of kiln body (2) be 700 ℃~900 ℃;
Step 5, cloth be after 30 minutes to 60 minutes, sees firer stands in to see that firer's operator's console (15) is upper, opens fire door (3) and stir the navajoite ball of burning in top roasting chamber (6) with drill rod, prevents roasting navajoite ball sintering, improves oxidizing roasting uniformity coefficient;
Step 6, when the roasting after 1~2 hour in top roasting chamber (6) of navajoite ball, be discharged into bottom moist closet (10) and deposit 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 by the navajoite ball in cooling room (11) external;
Step 8, the normal work 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 the wind speed of induced draft fan (12) and wind speed and the blast of 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 normal and continuous operation state.
8. the roasting method of mechanize navajoite roasting shaft kiln according to claim 7, it is characterized in that: in step 3, also to open oxygen-increasing device (18), in step 8, also will pass through the oxygenation amount of temperature monitoring system (17) adjusting oxygen-increasing device (18).
CN201310118188.5A 2013-04-08 2013-04-08 Mechanical navajoite roasting shaft kiln and roasting method Active CN103146910B (en)

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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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