CN107760884A - Prereduction desulfurizer in rotary kiln in RKEF method smelting ferronickels - Google Patents
Prereduction desulfurizer in rotary kiln in RKEF method smelting ferronickels Download PDFInfo
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- CN107760884A CN107760884A CN201711118615.4A CN201711118615A CN107760884A CN 107760884 A CN107760884 A CN 107760884A CN 201711118615 A CN201711118615 A CN 201711118615A CN 107760884 A CN107760884 A CN 107760884A
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- rotary kiln
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000003723 Smelting Methods 0.000 title claims abstract description 9
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 19
- 230000003009 desulfurizing effect Effects 0.000 claims abstract description 17
- 230000000694 effects Effects 0.000 claims abstract description 16
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 11
- 239000000126 substance Substances 0.000 claims abstract description 11
- 230000023556 desulfurization Effects 0.000 claims abstract description 10
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 9
- 229910000863 Ferronickel Inorganic materials 0.000 claims abstract description 5
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 18
- 238000003756 stirring Methods 0.000 claims description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 238000001354 calcination Methods 0.000 claims description 6
- 241000209140 Triticum Species 0.000 claims description 4
- 235000021307 Triticum Nutrition 0.000 claims description 4
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 229920005573 silicon-containing polymer Polymers 0.000 claims description 4
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 4
- 239000005995 Aluminium silicate Substances 0.000 claims description 3
- 235000012211 aluminium silicate Nutrition 0.000 claims description 3
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000292 calcium oxide Substances 0.000 claims description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 3
- JHLNERQLKQQLRZ-UHFFFAOYSA-N calcium silicate Chemical compound [Ca+2].[Ca+2].[O-][Si]([O-])([O-])[O-] JHLNERQLKQQLRZ-UHFFFAOYSA-N 0.000 claims description 3
- 235000012241 calcium silicate Nutrition 0.000 claims description 3
- 229910052918 calcium silicate Inorganic materials 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- 229910000514 dolomite Inorganic materials 0.000 claims description 3
- 239000010459 dolomite Substances 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 3
- 238000003760 magnetic stirring Methods 0.000 claims description 3
- 229940071125 manganese acetate Drugs 0.000 claims description 3
- UOGMEBQRZBEZQT-UHFFFAOYSA-L manganese(2+);diacetate Chemical compound [Mn+2].CC([O-])=O.CC([O-])=O UOGMEBQRZBEZQT-UHFFFAOYSA-L 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 2
- 239000003034 coal gas Substances 0.000 claims description 2
- TXKMVPPZCYKFAC-UHFFFAOYSA-N disulfur monoxide Inorganic materials O=S=S TXKMVPPZCYKFAC-UHFFFAOYSA-N 0.000 claims description 2
- 239000010419 fine particle Substances 0.000 claims description 2
- 239000008187 granular material Substances 0.000 claims description 2
- 235000019580 granularity Nutrition 0.000 claims description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 2
- 229910044991 metal oxide Inorganic materials 0.000 claims description 2
- 150000004706 metal oxides Chemical class 0.000 claims description 2
- 239000011707 mineral Substances 0.000 claims description 2
- 239000003345 natural gas Substances 0.000 claims description 2
- 230000009467 reduction Effects 0.000 claims description 2
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims 1
- 238000002347 injection Methods 0.000 claims 1
- 239000004577 thatch Substances 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 8
- 238000000746 purification Methods 0.000 abstract description 6
- 230000006872 improvement Effects 0.000 abstract description 3
- 238000000227 grinding Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 5
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 4
- 239000005864 Sulphur Substances 0.000 description 3
- 239000003463 adsorbent Substances 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 238000002560 therapeutic procedure Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000000505 pernicious effect Effects 0.000 description 2
- 230000001698 pyrogenic effect Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 239000002154 agricultural waste Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000610 breath-figure templating Methods 0.000 description 1
- 150000001669 calcium Chemical class 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B23/00—Obtaining nickel or cobalt
- C22B23/02—Obtaining nickel or cobalt by dry processes
- C22B23/023—Obtaining nickel or cobalt by dry processes with formation of ferro-nickel or ferro-cobalt
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B23/00—Obtaining nickel or cobalt
- C22B23/005—Preliminary treatment of ores, e.g. by roasting or by the Krupp-Renn process
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
The invention discloses prereduction desulfurizer in rotary kiln in a kind of RKEF methods smelting ferronickel, and it includes the block feed bin that lower section is provided with dosing conveyer belt；The tail end of dosing conveyer belt is corresponding with the charging aperture of vertical mill；The discharging opening of vertical mill connects with the charging aperture on powder-recepting machine top；The bottom of powder-recepting machine connects with feed pipe；The feed opening of feed pipe tail end is corresponding with the charging aperture at the top of finished bin；Finished bin connects with the charging aperture of constant feeder；One end of constant feeder connects with roots blower, and the other end connects with substance nozzle；Substance nozzle connects with rotary kiln.Desulfurizing agent and reducing agent are together finally blowed to inside rotary kiln by grinding and conveying, reacted while burner jet flames into rotary kiln, prereduction desulfurization is carried out in the environment of high temperature and steam, desulfurization process can be carried out in kiln, alleviate the load of subsequent purification, and can significantly improves clean-up effect simultaneously, and discharge index obtains the improvement of matter.
Description
Technical field
The invention belongs to gas cleaning device technical field, and in particular to one kind is utilized in RKEF method smelting ferronickels in rotary kiln
Prereduction desulfurizer.
Background technology
At present, as long as the processing method of domestic and international lateritic nickel ore has two kinds of smelting processes of pyrogenic process and wet method, wherein thermal process master
There are four kinds：Sintering-blast furnace process（BF methods）, rotary kiln-electro-smelting flow（RKEF methods）；Dominica Ying Qiao shaft furnaces-electricity
Furnace technology；Japanese big rivers and mountains rotary kiln for directly reducing method.Wherein, RKEF methods be the advanced of current pyrogenic attack lateritic nickel ore and into
Ripe technique, is widely used.
During using RKEF methods production ferronickel, the sulfur content of material in rotary kiln gas after the reaction is high, leads to
Discharged again frequently with back segment purified treatment, but the process of back segment purified treatment is relatively complicated, the purification ring individually set up
Section also increases the operation cost of enterprise, and the load that gas carries out concentrating purified treatment to increase purification in back segment, after purification
Gas more or less or contain certain sulphur, clean-up effect is incomplete, has certain pollution after discharge to environment, both wasted
The energy pollutes air again；And in the process of the reacting in rotary kiln of leading portion, appropriate adds desulfurizing agent into rotary kiln to carry out
Prereduction, so as to mitigate back segment purification load, segmented purified treatment is carried out, it is the ring that can be broken through to improve clean-up effect
Section.
Therefore, how purified treatment is advanced in rotary kiln and carries out prereduction desulfurization, it has also become be badly in need of under present case
The problem solved.
The content of the invention
Present invention aim to address prior art to have the technical problem that back segment purified treatment is cumbersome bothersome and clean-up effect is poor,
Prereduction desulfurizer in rotary kiln is provided in a kind of RKEF methods smelting ferronickel, carrys out overcome the deficiencies in the prior art.
The present invention is achieved by the following technical solution：
Prereduction desulfurizer in rotary kiln in a kind of RKEF methods smelting ferronickel of the present invention, it includes the block that bottom carries gate valve
Shape feed bin；The lower section of the block feed bin is provided with dosing conveyer belt corresponding with gate valve；The dosing conveyer belt
Tail end and the charging aperture of vertical mill are mutually corresponding；The discharging opening of the vertical mill passes through expects pipe and the charging aperture phase on powder-recepting machine top
It is intercommunicated；The bottom of the powder-recepting machine is interconnected by gate valve and feed pipe, and is provided with feed pipe and is connected with motor
Screw charging ram；The side of the powder-recepting machine is interconnected with blower fan；
The feed opening of the feed pipe tail end is mutually corresponding with the charging aperture at the top of finished bin；The lock that the finished bin passes through bottom
The charging aperture of valve and constant feeder is interconnected；One end of the constant feeder bottom discharge pipe mutually interconnects with roots blower
Logical, the other end is interconnected by Pneumatic conveying pipeline and substance nozzle；The substance nozzle is interconnected with rotary kiln, and with
Burner nozzle is mutually corresponding.
The invention further relates to the improvement to desulfurizing agent, and specifically, the desulfurizing agent is prepared according to following technique：
1）Wheat stalk is crushed with pulverizer, is then added in the aqueous sodium carbonate that concentration is 2M, soaks 10 hours, mistake
Air-dried after filter, produce component A；
2）By activated carbon, manganese acetate and ferric trichloride according to 50:2:1 mass ratio is added in water, in magnetic stirring apparatus
Heating stirring is then placed in drying baker in 80 DEG C of dry 30min to doing, produces component B；
3）By dolomite and kaolin according to 1:1 mass ratio mixing, is subsequently placed in calcining furnace and calcines 3h, calcining heat is
700 DEG C, take out, crush, be cooled to room temperature, produce component C；
4）By calcium oxide, calcirm-fluoride and dicalcium silicate according to 3:2:2 mass ratio is added in mixing agitator, and 600rpm is stirred
3min is mixed, sprinkling while stirring accounts for the dimethyl silicone polymer of the parts by weight of silica 1/10th, after stirring, is heated to 80
DEG C, 3min is incubated, obtains component D；
5）By component A, component B, component C and component D according to 3:5:5:20 mass ratio is added in mixer successively,
500rpm stirs 3min, takes out compound, produces.
The beneficial effect that the present invention obtains mainly includes but is not limited to the following aspects：
The present invention is rational in infrastructure, novel in design, and desulfurizing agent and reducing agent together by grinding and are conveyed finally in roots blower
Blow to inside rotary kiln under effect, reacted while burner jet flames into rotary kiln, in high temperature and steam
Prereduction desulfurization is carried out under environment, desulfurization process can be carried out in kiln, alleviates the load of subsequent purification, while and can is obvious
Clean-up effect is improved, discharge index obtains the improvement of matter.The present invention solve prior art back segment purified treatment it is cumbersome bothersome and
The technical problem of clean-up effect difference.
The present invention is improved desulfurizing agent, wherein, using the raw material and agricultural wastes of wide material sources so that discarded
Thing becomes the new energy, solves environmental protection of enterprise pressure, realizing turns waste into wealth；The present invention is useless to agricultural using sodium carbonate liquor
Gurry wheat stalk is modified, and improves its adsorption capacity and adsorption effect；Using dolime and kaolinic technique,
Substantially increase adsorption capacity；The present invention by containing calcium complexes carry out reasonable compatibility, and spray dimethyl silicone polymer and
Heating so that its surface forms diaphragm, improves holding time and desulfuration efficiency；The present invention is changed to activated carbon
Property, surface becomes more coarse, increases specific surface area, then after being adulterated with ferric trichloride, reunites on its surface, improve de-
Sulphur denitration ability, the activity of adsorbent is kept stable and continue to play suction-operated；Desulfurizing agent compatibility prepared by the present invention is reasonable,
Each raw material mutually cooperates with, and can reach preferable desulfurization off sulfide effect.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
1, hopper 2, belt feeder 3, block feed bin 4, dosing conveyer belt 5, expects pipe 6, powder-recepting machine in figure
7th, blower fan 8, vertical mill 9, feed opening 10, feed pipe 11, motor 12, finished bin 13, constant feeder 14,
Discharge nozzle 15, roots blower 16, Pneumatic conveying pipeline 17, burner nozzle 18, substance nozzle 19, rotary kiln.
Embodiment
In order that those skilled in the art more fully understand the technical scheme in the application, have below in conjunction with the application
Body embodiment, the present invention is more clearly and completely described, it is clear that described embodiment is only the application one
Divide embodiment, rather than whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not making
The every other embodiment obtained under the premise of creative work, should all belong to the scope of protection of the invention.
Embodiment 1
Reference picture 1, the present invention it include bottom carry gate valve block feed bin 3；The lower section of the block feed bin 3 is provided with and gate valve
Corresponding dosing conveyer belt 4；The tail end of the dosing conveyer belt 4 and the charging aperture of vertical mill 8 are mutually corresponding；It is described
The discharging opening of vertical mill 8 is interconnected by expects pipe 5 and the charging aperture on the top of powder-recepting machine 6；The bottom of the powder-recepting machine 6 passes through lock
Valve is interconnected with feed pipe 10, and the screw charging ram being connected with motor 11 is provided with feed pipe 10；The powder-recepting machine 6
Side and blower fan 7 be interconnected；
The feed opening 9 of the tail end of feed pipe 10 and the charging aperture at the top of finished bin 12 are mutually corresponding；The finished bin 12 passes through
The charging aperture of the gate valve of bottom and constant feeder 13 is interconnected；One end of the bottom discharge pipe 14 of constant feeder 13 with
Roots blower 15 is interconnected, and the other end is interconnected by Pneumatic conveying pipeline 16 and substance nozzle 18；The substance nozzle
18 are interconnected with rotary kiln 19, and mutually corresponding with burner nozzle 17.The reducing agent can use fine coal, coke etc. conventional
Reducing agent.
Operation principle：Reducing agent and desulfurizing agent are according to 1-2:2-3 mass ratio enters material bin 1, enters block by belt feeder 2
Shape feed bin 3 is well mixed, and is fallen into dosing conveyer belt 4 by the gate valve in the orlop portion of block material 3, is passed by dosing
Band 4 is sent to convey quantitative mixed material into vertical mill 8；Reducing agent and desulfurizing agent are ground under the abrasive action of vertical mill 8
The fine particle of 200 mesh granularities is simultaneously entered in powder-recepting machine 6 by expects pipe 5, and material is blown into mixing in the presence of blower fan 7；It
Fallen into afterwards in the presence of the screw charging ram in feed pipe 10 by feed opening 9 in finished bin 12, finished bin 12 is with quantitatively giving
Material machine 13 is interconnected, and granular material is passed through into bottom discharge pipe 14, Pneumatic conveying pipeline 16 in the presence of roots blower 15
Sprayed with substance nozzle 18 into rotary kiln 19 by burner nozzle 17, natural gas and mineral hot furnace coal gas are in the internal combustion of rotary kiln 19
Burn, material in rotary kiln 19 is heated to 850 degree or so, under reducing agent effect, the metal oxide party in lateritic nickel ore
Reduction, while caused sulfur oxide and reactive desulfurizing agent in kiln, remove part sulphur.
The present invention makes full use of course of reaction of the material in rotary kiln, make full use of high temperature and steam carry out prereduction and
Desulphurization reaction, carried on the premise of sulfur content in material is natively high and desulfurization is carried out in rotary kiln, good desulfurization can be played
Effect, meet for the purified treatment mitigation of back segment, while improve clean-up effect.
Embodiment 2
A kind of desulfurizing agent, it is prepared according to following technique：
1）Wheat stalk is crushed with pulverizer, is then added in the aqueous sodium carbonate that concentration is 2M, soaks 10 hours, mistake
Air-dried after filter, produce component A；
2）By activated carbon, manganese acetate and ferric trichloride according to 50:2:1 mass ratio is added in water, in magnetic stirring apparatus
Heating stirring is then placed in drying baker in 80 DEG C of dry 30min to doing, produces component B；
3）By dolomite and kaolin according to 1:1 mass ratio mixing, is subsequently placed in calcining furnace and calcines 3h, calcining heat is
700 DEG C, take out, crush, be cooled to room temperature, produce component C；
4）By calcium oxide, calcirm-fluoride and dicalcium silicate according to 3:2:2 mass ratio is added in mixing agitator, and 600rpm is stirred
3min is mixed, sprinkling while stirring accounts for the dimethyl silicone polymer of the parts by weight of silica 1/10th, after stirring, is heated to 80
DEG C, 3min is incubated, obtains component D；
5）By component A, component B, component C and component D according to 3:5:5:20 mass ratio is added in mixer successively,
500rpm stirs 3min, takes out compound, produces.
Embodiment 3
The effect test of desulfurizing agent prepared by the embodiment of the present invention 2：
Desulfurizing agent 10g is taken, is positioned in reactor and is tested, analog detection sulfurous gas, condition are as follows：SO2And NOx
The sulfurous gas of composition is blown into reaction system, controls SO2Concentration is 18mg/m3, NOx concentration 12mg/m3, reaction velocity is
（GHSV）For 80,000h-1, reaction time 60min.
Four groups are set respectively：Embodiment 2；Control group 1：Not addO-on therapy A；Control group 2：Not addO-on therapy B；Control
Group 3：Not addO-on therapy C.
Detect adsorbance of the adsorbent to pernicious gas（Pernicious gas/adsorbent=mg/g）, as a result as shown in table 1.
Table 1
| Group | SO2 mg/g | NOx mg/g |
| Embodiment 1 | 44.1 | 38.6 |
| Control group 1 | 36.2 | 35.1 |
| Control group 2 | 28.7 | 28.9 |
| Control group 3 | 32.9 | 31.2 |
Conclusion：As shown in Table 1, inventive desulfurization agent desulfurized effect is good, hence it is evident that better than control group 1-3, prompts between each component
Compatibility is reasonable, and synergisticing performance is good.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specific example " or
The description of " some examples " etc. means that combining specific features, structure, material or feature that the embodiment or example describe includes
In at least one embodiment or example of the present invention.In this manual, the schematic representation of above-mentioned term is not necessarily referred to
Be identical embodiment or example.Moreover, specific features, structure, material or the feature of description can be at any one
Or combined in an appropriate manner in multiple embodiments or example.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art is not departing from the principle and objective of the present invention
In the case of above-described embodiment can be changed within the scope of the invention, change, replace and modification.
Claims (3)
1. prereduction desulfurizer in rotary kiln in a kind of RKEF methods smelting ferronickel, it is characterized in that：It carries lock including bottom
The block feed bin of valve（3）；The block feed bin（3）Lower section be provided with dosing conveyer belt corresponding with gate valve（4）；It is described fixed
Measure feed conveyor belt（4）Tail end and vertical mill（8）Charging aperture it is mutually corresponding；The vertical mill（8）Discharging opening pass through material
Pipe（5）With powder-recepting machine（6）The charging aperture on top is interconnected；The powder-recepting machine（6）Bottom pass through gate valve and feed pipe（10）
It is interconnected, and feed pipe（10）Inside it is provided with and motor（11）The screw charging ram of drive connection；The powder-recepting machine（6）Side
With blower fan（7）It is interconnected；
The feed pipe（10）The feed opening of tail end（9）With finished bin（12）The charging aperture at top is mutually corresponding；The finished bin
（12）Pass through the gate valve and constant feeder of bottom（13）Charging aperture be interconnected；The constant feeder（13）Bottom discharge
Pipe（14）One end and roots blower（15）It is interconnected, the other end passes through Pneumatic conveying pipeline（16）With substance nozzle（18）Phase
It is intercommunicated；The substance nozzle（18）With rotary kiln（19）It is interconnected, and and burner nozzle（17）It is mutually corresponding.
2. the method for prereduction desulfurization is carried out using claim 1 described device, it is characterized in that：Reducing agent and desulfurizing agent enter successively
Material bin（1）, pass through belt feeder（2）Into block feed bin（3）It is well mixed, passes through block material（3）The gate valve in orlop portion
Fall into dosing conveyer belt（4）, pass through dosing conveyer belt（4）To vertical mill（8）The quantitative mixed material of interior conveying；Also
Former agent and desulfurizing agent are in vertical mill（8）Abrasive action under, be ground into the fine particle of 200 mesh granularities, and pass through expects pipe（5）Enter
Enter powder-recepting machine（6）It is interior, in blower fan（7）In the presence of material blown into mixing；Afterwards in feed pipe（10）Interior screw charging ram
In the presence of pass through feed opening（9）Fall into finished bin（12）It is interior, finished bin（12）With constant feeder（13）It is interconnected, in sieve
Thatch blower fan（15）In the presence of granular material passed through into bottom discharge pipe（14）, Pneumatic conveying pipeline（16）And substance nozzle（18）
To rotary kiln（19）Inside pass through burner nozzle（17）Injection, natural gas and mineral hot furnace coal gas burn in rotary kiln (19), will
Rotary kiln (19) interior material is heated to 850 DEG C, under reducing agent effect, the metal oxide party reduction in lateritic nickel ore, together
When kiln in caused sulfur oxide and reactive desulfurizing agent.
3. according to the method for claim 2, it is characterised in that the desulfurizing agent is prepared according to following technique：
1）Wheat stalk is crushed with pulverizer, is then added in the aqueous sodium carbonate that concentration is 2M, soaks 10 hours, mistake
Air-dried after filter, produce component A；
2）By activated carbon, manganese acetate and ferric trichloride according to 50:2:1 mass ratio is added in water, in magnetic stirring apparatus
Heating stirring is then placed in drying baker in 80 DEG C of dry 30min to doing, produces component B；
3）By dolomite and kaolin according to 1:1 mass ratio mixing, is subsequently placed in calcining furnace and calcines 3h, calcining heat is
700 DEG C, take out, crush, be cooled to room temperature, produce component C；
4）By calcium oxide, calcirm-fluoride and dicalcium silicate according to 3:2:2 mass ratio is added in mixing agitator, and 600rpm is stirred
3min is mixed, sprinkling while stirring accounts for the dimethyl silicone polymer of the parts by weight of silica 1/10th, after stirring, is heated to 80
DEG C, 3min is incubated, obtains component D；
5）By component A, component B, component C and component D according to 3:5:5:20 mass ratio is added in mixer successively,
500rpm stirs 3min, takes out compound, produces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711118615.4A CN107760884A (en) | 2017-11-14 | 2017-11-14 | Prereduction desulfurizer in rotary kiln in RKEF method smelting ferronickels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711118615.4A CN107760884A (en) | 2017-11-14 | 2017-11-14 | Prereduction desulfurizer in rotary kiln in RKEF method smelting ferronickels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107760884A true CN107760884A (en) | 2018-03-06 |
Family
ID=61273382
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711118615.4A Pending CN107760884A (en) | 2017-11-14 | 2017-11-14 | Prereduction desulfurizer in rotary kiln in RKEF method smelting ferronickels |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107760884A (en) |
Cited By (1)
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| CN113718117A (en) * | 2020-05-26 | 2021-11-30 | 山西华清能创环境科技有限公司 | Method for preparing inorganic fiber and nickel-iron alloy and inorganic fiber |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113718117A (en) * | 2020-05-26 | 2021-11-30 | 山西华清能创环境科技有限公司 | Method for preparing inorganic fiber and nickel-iron alloy and inorganic fiber |
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