CN105132670B - Classifying suspension roasting device for complex refractory iron ore - Google Patents
Classifying suspension roasting device for complex refractory iron ore Download PDFInfo
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- CN105132670B CN105132670B CN201510584190.0A CN201510584190A CN105132670B CN 105132670 B CN105132670 B CN 105132670B CN 201510584190 A CN201510584190 A CN 201510584190A CN 105132670 B CN105132670 B CN 105132670B
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Abstract
The invention provides a classifying suspension roasting device for complex refractory iron ore. The device comprises a suspension preheating oxidizing device, two-stage cyclone classifiers, two-stage suspension reducers, a cyclone separator and a draught fan, wherein the suspension preheating oxidizing device communicates with the first-stage cyclone classifier, and the first-stage cyclone classifier communicates with the second-stage cyclone classifier; the second-stage cyclone classifier communicates with the cyclone separator, and the cyclone separator communicates with the draught fan; discharging ports of the first-stage classifier and the second-stage classifier are correspondingly inserted into the first-stage suspension reducer and the second-stage suspension reducer. With the adoption of the device, coarse and fine materials can be classified, magnetized and roasted, and thus the reduction conditions of the materials at different classes can be controlled; in addition, the energy consumption can be greatly reduced, and the optimal technical-economic indicator can be obtained.
Description
Technical field
The invention belongs to technical field of mineral processing, more particularly to a kind of Refractory iron ore stone classified suspension roasting dress
Put.
Background technology
China possesses the huge Refractory iron ore resource of reserves, fine- disseminated ore, siderite, limonite, oolitic hematite etc.
It is typical difficult using iron ore deposit gross reserves up to more than 20,000,000,000 tons, be distributed widely in Liaoning, Hebei, Shanxi, Shaanxi, Hubei,
The ground such as Xinjiang.The mineral composition of above refractory iron ore is complicated, grain size number is fine, is difficult to obtain preferable using conventional technique of preparing
Technical-economic index, and adopt the such refractory iron ore of suspension roasting technical finesse obtain preferable separation index.But should
Technology found in production practices, and the material of size fractionated its magnetic rate Jing after suspension roasting has notable difference, and granularity is thinner
Iron mineral grade roasting after magnetic rate it is high, reduction is abundant, but juvenescence, coarse fraction iron mine easily occurred in Ultra-fine iron minerals
Insufficient, the state of the deficient reduction of presentation is reduced in thing roasting process.As current suspension roasting device cannot be to size fractionated thing
Selective reduction roasting is carried out, so there is size fractionated iron mineral during current suspension roasting and crossing reduction and owing asking for reduction
Topic.The follow-up sorting result of deficient reducing material is poor, and the response rate is low, crosses the reducing material considerable drain energy, and subsequently sorts technology Jing
Ji index declines notable.Therefore, Novel suspending roasting apparatus needs the efficient utilization researched and developed to realize the technology badly.
The content of the invention
For the problems referred to above that the suspension roasting technology of existing Refractory iron ore stone is present, the present invention provides a kind of complicated
Refractory iron ore classified suspension calciner.
A kind of Refractory iron ore stone classified suspension calciner of the present invention includes suspension preheating oxidator, two stage cyclone
Clasfficiator, two-stage suspended reduction device, cyclone separator and blower fan；The charging aperture of suspension preheating oxidator and the discharging opening of feed hopper
Connection, the discharging opening of suspension preheating oxidator are connected with the charging aperture of one cyclonic clasfficiator；The discharging of one cyclonic clasfficiator
Mouth is connected with the charging aperture of two grades of cyclone classifiers, and the discharging opening of two grades of cyclone classifiers is connected with the air inlet of cyclone separator
It is logical, the air outlet of cyclone separator and the inlet communication of blower fan；The discharging opening insertion first stage suspension reduction of one cyclonic clasfficiator
In the charging aperture of device, the discharging opening of two grades of cyclone classifiers is inserted in the charging aperture of two grades of suspended reduction devices.
Above-mentioned suspension preheating oxidator is core structure, and top is provided with discharging opening, and lower sides are provided with charging aperture, bottom
End is provided with air inlet for being passed through the flue gas of burning.
Above-mentioned suspended reduction device is to be made up of large cylinder and little cylinder, and the diameter height ratio of large cylinder is 1:（2~5）, it is little
The diameter height ratio of cylinder is 1:（2~5）, large cylinder and little cylinder bottom is contour and bottom interconnects；Large cylinder bottom connects
Big cone table, big cone table bottom is provided with nitrogen inlet；Little cylinder bottom connects small conical platform body, and small conical platform body bottom is provided with reduction
Gas entrance；The upper portion side wall of little cylinder is provided with reducing material outlet；Charging aperture of the top of large cylinder for suspended reduction device.
In said apparatus, the height of the connected entrance connected between the large cylinder of suspended reduction device and little cylinder and little cylinder
The ratio of height is 1:（3~6）, the large cylinder of suspended reduction device is 1 with the volumetric ratio of little cylinder:（0.3~0.6）.
In said apparatus, the volumetric ratio of first stage suspension restorer and two grades of suspended reduction devices is 1:（0.5~0.8）, one-level rotation
The volumetric ratio of wind clasfficiator and two grades of cyclone classifiers is 1:（0.5~0.8）.
In said apparatus, the discharging opening of cyclone separator bottom is connected with ash bucket.
In said apparatus, suspension preheating oxidator is 1 with the volumetric ratio of first stage suspension restorer:（0.2~0.7）.
The using method of the Refractory iron ore stone classified suspension calciner of the present invention is carried out according to the following steps：
1st, the powder of complicated difficult ore dressing is placed in feed hopper, is added in suspension preheating oxidator, together by feed hopper
When be passed through the flue gas of burning to the air inlet of suspension preheating oxidator, control powder temperature is at 600 ~ 1200 DEG C and is in suspension
State；
2nd, start blower fan and produce negative pressure, the material for being preheated oxidation in suspension preheating oxidator is classified into one cyclonic
Device, Jing after scalping a fine fraction enter two grades of cyclone classifiers, and one time coarse fodder is partially into first stage suspension reduction
Device；Being passed through nitrogen into first stage suspension restorer makes a coarse fodder be partially in suspended state, and be passed through also Primordial Qi with it is once thick
Discharge in 400 ~ 800 DEG C of generation reduction reactions of temperature, reacted coarse grain reducing material material part；
3rd, a fine fraction enters two grades of cyclone classifiers Jing after secondary grading, and secondary fine fraction enters cyclonic separation
Device, secondary coarse material are partially into two grades of suspended reduction devices；Into two grades of suspended reduction devices being passed through nitrogen makes at secondary coarse material part
In suspended state, and also Primordial Qi and secondary coarse material part is passed through in 400 ~ 800 DEG C of generation reduction reactions of temperature, reacted particulate
Reducing material is discharged；
4th, after secondary fine fraction enters cyclone separator, the separated gas that is cleaned is discharged by blower fan, remaining
Solid ashes enters ash bucket from cyclone separator bottom.
In said method, the reaction equation of the reduction reaction occurred in the suspended reduction device in step 2 and 3 is
CO+Fe2O3=Fe3O4+CO2 （1）.
The Fe gone back in the consumption and a coarse fodder part of Primordial Qi in above-mentioned step 32O3Mol ratio be 1:1, in step 4
Fe also in the consumption of Primordial Qi and secondary coarse material part2O3Mol ratio be 1:1.
In above-mentioned step 3 and 4, also Primordial Qi is CO and N2Gaseous mixture, wherein the percent by volume of CO be 30 ~ 40%.
It is of the invention compared with currently common suspension roasting device, thickness stock grading can be carried out magnetizing roast, make difference
Rank material reducing condition is controllable, can improve reduction effect, improves separation index, and energy consumption can be greatly reduced, and obtains more excellent
Technical-economic index.
Description of the drawings
Fig. 1 is the Refractory iron ore stone classified suspension calciner structural representation in the embodiment of the present invention 1；In figure,
1st, feed hopper, 2, flue gas, 3, suspension preheating oxidator, 4, one cyclonic clasfficiator, 5, first stage suspension restorer, 6, enter one-level
The also Primordial Qi of suspended reduction device, 7, into the nitrogen of first stage suspension restorer, 8, coarse fodder reducing material, 9, two grades of cyclone classifiers,
10th, two grades of suspended reduction devices, 11, into the also Primordial Qi of two grades of suspended reduction devices, 12, into the nitrogen of two grades of suspended reduction devices,
13rd, particulate reducing material, 14, cyclone separator, 15, ash bucket, 16, blower fan, 17, be cleaned gas.
Specific embodiment
The Iron grade TFe of the Refractory iron ore selected in the embodiment of the present invention contains by weight percentage in 20 ~ 40wt %
FeO 1 ~ 10%, SiO230 ~ 60 %, Mn 0 ~ 2%, Al2O3 0 ~ 2 %, CaO 0 ~ 2%, MgO 0 ~ 2%.
The Refractory iron ore stone selected in the embodiment of the present invention is Magnet based on hematite-limonite and siderite, secondly
Ore deposit, the percentage by weight of magnetic iron ore is 5 ~ 20%, and the percentage by weight of hematite-limonite is 30 ~ 70%, the percentage by weight of siderite
For 2 ~ 40 %.
The complicated difficult ore dressing selected in the embodiment of the present invention is powder, and granularity accounts for whole powder gross weights -74 μm of part
More than the 60% of amount.
In the coarse grain reducing material that the method for the present invention is obtained, granularity is that -74 μm of part accounts for the 50% of whole powder gross weights
More than, in particulate reducing material, granularity is that -74 μm of part accounts for more than the 89% of whole powder gross weights.
The yield of the coarse grain reducing material of the present invention is more than 98%, and the yield of particulate reducing material is more than 95%.
The magnetic rate of the coarse grain reducing material of the present invention（FeO/TFe）42 ~ 43, the magnetic rate of particulate reducing material（FeO/
TFe）42 ~ 43；Above-mentioned coarse grain reducing material is carried out into magnetic separation, the magnetic concentrate grade of acquisition 65 ~ 66%, the response rate 90% with
On；Particulate reducing material is carried out into magnetic separation, the magnetic concentrate grade of acquisition 66 ~ 67%, the response rate more than 92%.
Embodiment 1
Refractory iron ore stone classified suspension calciner structure is as shown in figure 1, including suspension preheating oxidator, two-stage rotation
Wind clasfficiator, two-stage suspended reduction device, cyclone separator and blower fan；The charging aperture of suspension preheating oxidator and the discharging of feed hopper
Mouth connection, the discharging opening of suspension preheating oxidator are connected with the charging aperture of one cyclonic clasfficiator；One cyclonic clasfficiator goes out
Material mouth is connected with the charging aperture of two grades of cyclone classifiers, and the discharging opening of two grades of cyclone classifiers is connected with the air inlet of cyclone separator
It is logical, the air outlet of cyclone separator and the inlet communication of blower fan；The discharging opening insertion first stage suspension reduction of one cyclonic clasfficiator
In the charging aperture of device, the discharging opening of two grades of cyclone classifiers is inserted in the charging aperture of two grades of suspended reduction devices；
Suspension preheating oxidator is core structure, and top is provided with discharging opening, and lower sides are provided with charging aperture, and bottom is provided with
Air inlet is used for being passed through the flue gas of burning；
Suspended reduction device is to be made up of large cylinder and little cylinder, and the diameter height ratio of large cylinder is 1:2, the diameter of little cylinder
Highly than being 1:2, large cylinder and little cylinder bottom is contour and bottom interconnects；Large cylinder bottom connects big cone table, auger
Stage body bottom is provided with nitrogen inlet；Little cylinder bottom connects small conical platform body, and small conical platform body bottom is provided with also Primordial Qi entrance；Little cylinder
Upper portion side wall be provided with reducing material outlet；Charging aperture of the top of large cylinder for suspended reduction device；
The height of the connected entrance connected between large cylinder and little cylinder is 1 with the ratio of the height of little cylinder:3, volumetric ratio is
1:0.3；
The volumetric ratio of first stage suspension restorer and two grades of suspended reduction devices is 1:0.5；
The discharging opening of cyclone separator bottom is connected with ash bucket；
The volumetric ratio of one cyclonic clasfficiator and two grades of cyclone classifiers is 1:0.5；
Suspension preheating oxidator is 1 with the volumetric ratio of first stage suspension restorer:0.2；
The using method of said apparatus is：
The powder of complicated difficult ore dressing is placed in feed hopper, is added in suspension preheating oxidator by feed hopper, while
The flue gas of burning is passed through to the air inlet of suspension preheating oxidator, control powder temperature is at 600 DEG C and is in suspended state；
Start blower fan and produce negative pressure, the material for being preheated oxidation in suspension preheating oxidator is classified into one cyclonic
Device, Jing after scalping a fine fraction enter two grades of cyclone classifiers, and one time coarse fodder is partially into first stage suspension reduction
Device；Being passed through nitrogen into first stage suspension restorer makes a coarse fodder be partially in suspended state, and be passed through also Primordial Qi with it is once thick
Discharge in 400 DEG C of generation reduction reactions of temperature, reacted coarse grain reducing material material part；
One time fine fraction enters two grades of cyclone classifiers Jing after secondary grading, and secondary fine fraction enters cyclonic separation
Device, secondary coarse material are partially into two grades of suspended reduction devices；Into two grades of suspended reduction devices being passed through nitrogen makes at secondary coarse material part
In suspended state, and, with secondary coarse material part in 400 DEG C of generation reduction reactions of temperature, reacted particulate is reduced to be passed through also Primordial Qi
Material is discharged；
After secondary fine fraction enters cyclone separator, the separated gas that is cleaned is discharged by blower fan, remaining solid
Body ashes enters ash bucket from cyclone separator bottom；
The consumption of the also Primordial Qi in being passed through first stage suspension restorer and two grades of suspended reduction devices is according to the CO in also Primordial Qi
With a coarse fodder part and the Fe in secondary coarse material part2O3Mol ratio be 1:1；Also Primordial Qi is CO and N2Gaseous mixture,
Wherein the percent by volume of CO is 30%；
Complicated difficult ore dressing granularity accounts for more than the 60% of whole powder gross weights -74 μm of part；
In the coarse grain reducing material of acquisition, the part of -74 μm of granularity accounts for the 50.76% of gross weight, magnetic rate（FeO/TFe）For
42.17%；Concentrate Iron grade 65.42% after magnetic separation, the response rate 90.21%；
In the particulate reducing material of acquisition, the part of -74 μm of granularity accounts for the 89.63% of gross weight, magnetic rate（FeO/TFe）For
43.46%；Concentrate Iron grade 66.37% after magnetic separation, the response rate 92.52%；
Suspension roasting is carried out using traditional method, the part of -74 μm of granularity accounts for gross weight in the reducing material of acquisition
62.34%, magnetic rate（FeO/TFe）For 50.29%；Concentrate Iron grade 63.46% after magnetic separation, the response rate 84.93%.
Embodiment 2
Apparatus structure with embodiment 1, difference is：
（1）Suspended reduction device is to be made up of large cylinder and little cylinder, and the diameter height ratio of large cylinder is 1:3, little cylinder
Diameter height ratio is 1:3；
（2）The height of the connected entrance connected between large cylinder and little cylinder is 1 with the ratio of the height of little cylinder:4, volumetric ratio
For 1:0.4；
（3）The volumetric ratio of first stage suspension restorer and two grades of suspended reduction devices is 1:0.6；
（4）The volumetric ratio of one cyclonic clasfficiator and two grades of cyclone classifiers is 1:0.6；
（5）Suspension preheating oxidator is 1 with the volumetric ratio of first stage suspension restorer:0.4；
Using method with embodiment 1, difference is：
（1）In suspension preheating oxidator, powder temperature is at 800 DEG C；
（2）Also there are reduction reactions with a coarse fodder part for 500 DEG C in temperature in Primordial Qi；
（3）Also there are reduction reactions with secondary coarse material part for 500 DEG C in temperature in Primordial Qi；
（4）Also in Primordial Qi, the percent by volume of CO is 35%；
Complicated difficult ore dressing granularity accounts for more than the 60% of whole powder gross weights -150 μm of part；
In the coarse grain reducing material of acquisition, the part of -150 μm of granularity accounts for the 53.78% of gross weight, magnetic rate（FeO/TFe）For
42.56%；Concentrate Iron grade 66.89% after magnetic separation, the response rate 91.25%；
In the particulate reducing material of acquisition, the part of -150 μm of granularity accounts for the 93.14% of gross weight, magnetic rate（FeO/TFe）For
42.89%；Concentrate Iron grade 67.21% after magnetic separation, the response rate 92.69%；
Suspension roasting is carried out using traditional method, the part of -150 μm of granularity accounts for gross weight in the reducing material of acquisition
73.46%, magnetic rate（FeO/TFe）For 51.33%；Concentrate Iron grade 62.88% after magnetic separation, the response rate 83.28%.
Embodiment 3
Apparatus structure with embodiment 1, difference is：
（1）Suspended reduction device is to be made up of large cylinder and little cylinder, and the diameter height ratio of large cylinder is 1:4, little cylinder
Diameter height ratio is 1:4；
（2）The height of the connected entrance connected between large cylinder and little cylinder is 1 with the ratio of the height of little cylinder:5, volumetric ratio
For 1:0.5；
（3）The volumetric ratio of first stage suspension restorer and two grades of suspended reduction devices is 1:0.7；
（4）The volumetric ratio of one cyclonic clasfficiator and two grades of cyclone classifiers is 1:0.7；
（5）Suspension preheating oxidator is 1 with the volumetric ratio of first stage suspension restorer:0.6；
Using method with embodiment 1, difference is：
（1）In suspension preheating oxidator, powder temperature is at 1000 DEG C；
（2）Also there are reduction reactions with a coarse fodder part for 600 DEG C in temperature in Primordial Qi；
（3）Also there are reduction reactions with secondary coarse material part for 600 DEG C in temperature in Primordial Qi；
（4）Also in Primordial Qi, the percent by volume of CO is 35%；
Complicated difficult ore dressing granularity accounts for more than the 60% of whole powder gross weights -300 μm of part；
In the coarse grain reducing material of acquisition, the part of -300 μm of granularity accounts for the 68.43% of gross weight, magnetic rate（FeO/TFe）For
43.14%；Concentrate Iron grade 66.58% after magnetic separation, the response rate 91.33%；
In the particulate reducing material of acquisition, the part of -300 μm of granularity accounts for the 93.14% of gross weight, magnetic rate（FeO/TFe）For
43.55%；Concentrate Iron grade 67.15% after magnetic separation, the response rate 90.94%；
Suspension roasting is carried out using traditional method, the part of -300 μm of granularity accounts for gross weight in the reducing material of acquisition
73.46%, magnetic rate（FeO/TFe）For 49.32%；Concentrate Iron grade 64.18% after magnetic separation, the response rate 86.22%.
Embodiment 4
Apparatus structure with embodiment 1, difference is：
（1）Suspended reduction device is to be made up of large cylinder and little cylinder, and the diameter height ratio of large cylinder is 1:5, little cylinder
Diameter height ratio is 1:5；
（2）The height of the connected entrance connected between large cylinder and little cylinder is 1 with the ratio of the height of little cylinder:6, volumetric ratio
For 1:0.6；
（3）The volumetric ratio of first stage suspension restorer and two grades of suspended reduction devices is 1:0.8；
（4）The volumetric ratio of one cyclonic clasfficiator and two grades of cyclone classifiers is 1:0.8；
（5）Suspension preheating oxidator is 1 with the volumetric ratio of first stage suspension restorer:0.7；
Using method with embodiment 1, difference is：
（1）In suspension preheating oxidator, powder temperature is at 1200 DEG C；
（2）Also there are reduction reactions with a coarse fodder part for 800 DEG C in temperature in Primordial Qi；
（3）Also there are reduction reactions with secondary coarse material part for 800 DEG C in temperature in Primordial Qi；
（4）Also in Primordial Qi, the percent by volume of CO is 40%；
Complicated difficult ore dressing granularity accounts for more than the 60% of whole powder gross weights -500 μm of part；
In the coarse grain reducing material of acquisition, the part of -500 μm of granularity accounts for the 70.59% of gross weight, magnetic rate（FeO/TFe）For
43.41%；Concentrate Iron grade 67.34% after magnetic separation, the response rate 91.16%；
In the particulate reducing material of acquisition, the part of -500 μm of granularity accounts for the 97.64% of gross weight, magnetic rate（FeO/TFe）For
43.55%；Concentrate Iron grade 68.19% after magnetic separation, the response rate 91.88%；
Suspension roasting is carried out using traditional method, the part of -500 μm of granularity accounts for gross weight in the reducing material of acquisition
79.31%, magnetic rate（FeO/TFe）For 47.13%；Concentrate Iron grade 64.25% after magnetic separation, the response rate 86.1%.
Claims (5)
1. a kind of Refractory iron ore stone classified suspension calciner, it is characterised in that including suspension preheating oxidator, two-stage rotation
Wind clasfficiator, two-stage suspended reduction device, cyclone separator and blower fan；The charging aperture of suspension preheating oxidator and the discharging of feed hopper
Mouth connection, the discharging opening of suspension preheating oxidator are connected with the charging aperture of one cyclonic clasfficiator；One cyclonic clasfficiator goes out
Material mouth is connected with the charging aperture of two grades of cyclone classifiers, and the discharging opening of two grades of cyclone classifiers is connected with the air inlet of cyclone separator
It is logical, the air outlet of cyclone separator and the inlet communication of blower fan；The discharging opening insertion first stage suspension reduction of one cyclonic clasfficiator
In the charging aperture of device, the discharging opening of two grades of cyclone classifiers is inserted in the charging aperture of two grades of suspended reduction devices；Described suspension is pre-
Thermal oxidizer is core structure, and top is provided with discharging opening, and lower sides are provided with charging aperture, and bottom is provided with air inlet for being passed through
The flue gas of burning；Described suspended reduction device is to be made up of large cylinder and little cylinder, and the diameter height ratio of large cylinder is 1:（2~
5）, the diameter height ratio of little cylinder is 1:（2~5）, large cylinder and little cylinder bottom is contour and bottom interconnects；Large cylinder bottom
The big cone table of end connection, big cone table bottom is provided with nitrogen inlet；Little cylinder bottom connects small conical platform body, and small conical platform body bottom sets
There is also Primordial Qi entrance；The upper portion side wall of little cylinder is provided with reducing material outlet；Charging of the top of large cylinder for suspended reduction device
Mouthful；The height of connected entrance connected between the large cylinder and little cylinder of described suspended reduction device with the ratio of the height of little cylinder is
1:（3~6）, the large cylinder of suspended reduction device is 1 with the volumetric ratio of little cylinder:（0.3~0.6）.
2. a kind of Refractory iron ore stone classified suspension calciner according to claim 1, it is characterised in that described
The volumetric ratio of first stage suspension restorer and two grades of suspended reduction devices is 1:（0.5~0.8）, one cyclonic clasfficiator and two grades of whirlwind
The volumetric ratio of clasfficiator is 1:（0.5~0.8）.
3. a kind of Refractory iron ore stone classified suspension calciner according to claim 1, it is characterised in that described
The discharging opening of cyclone separator bottom is connected with ash bucket.
4. a kind of Refractory iron ore stone classified suspension calciner according to claim 1, it is characterised in that described
Suspension preheating oxidator is 1 with the volumetric ratio of first stage suspension restorer:（0.2~0.7）.
5. the using method of the Refractory iron ore stone classified suspension calciner described in a kind of claim 1, it is characterised in that
Carry out according to the following steps：
（1）The powder of complicated difficult ore dressing is placed in feed hopper, is added in suspension preheating oxidator by feed hopper, while to
The air inlet of suspension preheating oxidator is passed through the flue gas of burning, and control powder temperature is at 600 ~ 1200 DEG C and is in suspended state；
（2）Start blower fan and produce negative pressure, make the material for being preheated oxidation in suspension preheating oxidator enter one cyclonic clasfficiator,
A fine fraction Jing after scalping enters two grades of cyclone classifiers, and one time coarse fodder is partially into first stage suspension restorer；
Being passed through nitrogen into first stage suspension restorer makes a coarse fodder be partially in suspended state, and is passed through also Primordial Qi and a coarse fodder portion
Divide in 400 ~ 800 DEG C of generation reduction reactions of temperature, reacted coarse grain reducing material is discharged；
（3）One time fine fraction enters two grades of cyclone classifiers Jing after secondary grading, and secondary fine fraction enters cyclone separator,
Secondary coarse material is partially into two grades of suspended reduction devices；Being passed through nitrogen into two grades of suspended reduction devices, to be partially in secondary coarse material outstanding
Floating state, and, with secondary coarse material part in 400 ~ 800 DEG C of generation reduction reactions of temperature, reacted particulate is reduced to be passed through also Primordial Qi
Material is discharged；Fe also in the consumption of Primordial Qi and a coarse fodder part2O3Mol ratio be 1:1；
（4）After secondary fine fraction enters cyclone separator, the separated gas that is cleaned is discharged by blower fan, remaining solid
Ashes enters ash bucket from cyclone separator bottom；Fe also in the consumption of Primordial Qi and secondary coarse material part2O3Mol ratio be 1:1；
Wherein step（3）With（4）In also Primordial Qi be CO and N2Gaseous mixture, wherein the percent by volume of CO be 30 ~ 40%.
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