CN108660311A - A kind of laterite reduction apparatus and production technology - Google Patents
A kind of laterite reduction apparatus and production technology Download PDFInfo
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- CN108660311A CN108660311A CN201810907511.XA CN201810907511A CN108660311A CN 108660311 A CN108660311 A CN 108660311A CN 201810907511 A CN201810907511 A CN 201810907511A CN 108660311 A CN108660311 A CN 108660311A
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- China
- Prior art keywords
- rotary kiln
- laterite
- reducing agent
- elevator
- discharge port
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 229910001710 laterite Inorganic materials 0.000 title claims abstract description 56
- 239000011504 laterite Substances 0.000 title claims abstract description 56
- 230000009467 reduction Effects 0.000 title claims abstract description 28
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 238000005516 engineering process Methods 0.000 title claims abstract description 15
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 55
- 230000000694 effects Effects 0.000 claims abstract description 7
- 229910052751 metal Inorganic materials 0.000 claims abstract description 7
- 239000002184 metal Substances 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 43
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 30
- 239000011707 mineral Substances 0.000 claims description 30
- 238000002156 mixing Methods 0.000 claims description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- 239000003500 flue dust Substances 0.000 claims description 8
- 239000008188 pellet Substances 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000011265 semifinished product Substances 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 239000010941 cobalt Substances 0.000 claims description 4
- 229910017052 cobalt Inorganic materials 0.000 claims description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 4
- 229910000428 cobalt oxide Inorganic materials 0.000 claims description 4
- 238000002425 crystallisation Methods 0.000 claims description 4
- 230000008025 crystallization Effects 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 239000003245 coal Substances 0.000 claims description 3
- 230000008020 evaporation Effects 0.000 claims description 3
- 238000001704 evaporation Methods 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 1
- 239000007789 gas Substances 0.000 claims 1
- 239000001301 oxygen Substances 0.000 claims 1
- 229910052760 oxygen Inorganic materials 0.000 claims 1
- 238000000605 extraction Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- KGWWEXORQXHJJQ-UHFFFAOYSA-N [Fe].[Co].[Ni] Chemical compound [Fe].[Co].[Ni] KGWWEXORQXHJJQ-UHFFFAOYSA-N 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical compound [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910000480 nickel oxide Inorganic materials 0.000 description 1
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon 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
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/16—Sintering; Agglomerating
- C22B1/216—Sintering; Agglomerating in rotary furnaces
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
The invention discloses a kind of laterite reduction apparatus, including batch hopper, rotary kiln and high inclination-angle lifting means, the rotary kiln is obliquely installed, and the feed inlet of the rotary kiln is higher than discharge port, the feed end side of the rotary kiln is provided with the first elevator, the bottom of first elevator is stretched to below the discharge port of the batch hopper, the side-lower of the discharge port of the rotary kiln is provided with feed bin, the feed bin side is provided with the high inclination-angle lifting means, for the reducing agent in the feed bin to be lifted up, its oxidized metal being discharged with the rotary kiln is set to mix.Advantageous effect is：By being improved to production technology, the consumption of reducing agent can not only be reduced, reduce production cost, while the production efficiency of equipment also can be improved；The high inclination-angle lifting means is set at the kiln tail of the rotary kiln, to launch reducing agent downwards above the discharge port of kiln tail, realizes the rear dispensing of reducing agent.
Description
Technical field
The present invention relates to laterite processing equipment fields, and in particular to a kind of laterite reduction apparatus and production technology.
Background technology
Containing valuable metals or nonmetallic such as a large amount of iron, cobalt, nickel, chromium, silicon in laterite, therefore often had as these
Valence metal or the raw material of nonmetallic extraction.In extraction, need to send raw material to reacting in rotary kiln, generate iron oxide,
All material are sent into mineral hot furnace after the completion of reaction and carry out secondary reduction by cobalt oxide and nickel oxide again, to smelt into iron-cobalt-nickel
Mixture.
Applicants have discovered that at least there is following technical problem in the prior art：Reducing agent is typically to be mixed into original in dry mine area
In material, then it is admitted in rotary kiln together with raw material again, and since kiln temperature is higher, reducing agent is by rotary kiln
When, it can be burnt a part, therefore, when dry mine area adds reducing agent, reducing agent dosage can be bigger than actually required.
Invention content
The purpose of the present invention is that provides a kind of laterite reduction apparatus and production technology to solve the above-mentioned problems,
To solve laterite in the prior art, in valuable metal or nonmetallic extraction process, the technologies such as the reducing agent that is added is more are asked
Topic.Preferred technical solution has in many technical solutions provided by the invention：Keep reducing agent straight using high inclination-angle lifting means
It connects addition to export in rotary kiln, effectively reducing agent is avoided to be burnt, wait technique effects, elaboration as detailed below thereby saving energy consumption.
To achieve the above object, the present invention provides following technical schemes：
One of main technical schemes provided by the invention are：A kind of laterite reduction apparatus, including batch hopper, rotary kiln and incline greatly
Angle lifting means, the rotary kiln are obliquely installed, and the feed inlet of the rotary kiln is higher than discharge port, the charging of the rotary kiln
End side is provided with the first elevator, and the bottom of first elevator is stretched to below the discharge port of the batch hopper, described time
The side-lower of the discharge port of rotary kiln is provided with feed bin, and the feed bin side is provided with the high inclination-angle lifting means, is used for institute
The reducing agent stated in feed bin is lifted up, and the oxidized metal that it is discharged with the rotary kiln is made to mix；
The side of the feed bin is provided with hot material tank, for receiving mixed mineral aggregate and reducing agent, the side of the hot material tank
It is provided with mineral hot furnace, and the second elevator is provided between the hot material tank and the mineral hot furnace, is used for the object in hot material tank
Material is promoted in the mineral hot furnace.
Preferably, the gradient of the rotary kiln is 3 ° -5 °, and chute is provided in the rotary kiln.
Preferably, the rotary kiln has feed end to be divided into four regions to discharge end, be followed successively by preheating zone, roast area,
Reducing zone and discharge zone.
Preferably, the high inclination-angle lifting means is the belt elevator that angle of inclination is 80 °, and belt elevator
Upper and lower ends are horizontality, and the high inclination-angle lifting means includes two belts disposed in parallel, belt surface setting altogether
There is acclivitous striker plate, reducing agent can be blocked, reducing agent is enable to be delivered up together with belt.
Preferably, the feed bin includes two hoppers altogether, and hopper is infundibulate, and the discharge port of two hoppers is right respectively
Answer two belts of the high inclination-angle lifting means.
Preferably, mixing duct straight down is provided with below the top drain hole of the high inclination-angle lifting means,
And the discharge port of the rotary kiln also is located in mixing duct, and the hot material tank is led to below the mixing duct.
Preferably, first elevator and second elevator are common scraper-type belt elevator.
Using a kind of above-mentioned laterite reduction apparatus, laterite does not add first before entering the rotary kiln into laterite
Add reducing agent, is reacted to make laterite and flue dust pellet individually be admitted to the rotary kiln, to avoid reducing agent from existing
It is burnt in the rotary kiln, laterite during discharging, is inclined greatly after rotary kiln high-temperature heating by described
Reducing agent is promoted to above the rotary kiln discharge port by angle lifting means, to make reducing agent and the mine after temperature reduction
Material mixing, and fall into together in the hot material tank, it effectively prevent reducing agent that scaling loss occurs with high temperature, mixed mixture is in institute
It states to enter in the mineral hot furnace under the castering action of the second elevator and be restored.
Main technical schemes provided by the invention second is that：A kind of production technology of laterite reduction apparatus, including it is as follows
Step：
1）, first by flue dust pelletize pellet mixed with laterite, pour into the batch hopper；
2）, the laterite mixture in the batch hopper is promoted to through first elevator in the rotary kiln；
3）, handled by four reaction areas into the laterite of the rotary kiln, treatment process is respectively：
1., first laterite is preheated, the Free water in complete evaporation laterite simultaneously provides temperature of charge；
2., when it is 700 DEG C~800 DEG C that the laterite of preheating, which is heated to temperature, the roasting abjection crystallization water, i.e. scaling loss, except arriving
0.5%, maximum 0.7%；
3., the reduction coal in flue dust pellet generate reducibility gas, so that the iron in laterite, nickel and cobalt/cobalt oxide is reduced；
4., the material after roasting reduction continue to move to the rotary kiln tail portion, into kiln tail discharge zone；
5., the discharge port discharge of the material of discharge zone through the rotary kiln；
4）, reducing agent in the feed bin is promoted to above the kiln tail of the rotary kiln by the high inclination-angle lifting means；
5）, the step 4）In be promoted to circular flow of the reducing agent above the rotary kiln in the high inclination-angle lifting means
Under effect, since gravity is trickled down downwards automatically, to which the material being discharged with the discharge port of the rotary kiln mixes, together
It drops downward into the hot material tank；
6）, second elevator semi-finished product mineral aggregate after the addition reducing agent in the hot material tank is delivered to the mine together
It is restored in hot stove.
By above-mentioned production technology, reducing agent is made to be added in mineral aggregate after the completion of laterite sintering, avoid reducing agent into
Enter the rotary kiln, to effectively prevent reducing agent scaling loss, simultaneously because laterite when entering the rotary kiln, is not added with also
Former agent, therefore treatment effeciency of the rotary kiln to laterite is also can further improve, and then improve the production efficiency of equipment.
Advantageous effect is：1, the present invention can not only reduce the consumption of reducing agent by being improved to production technology
Amount reduces production cost, while the production efficiency of equipment also can be improved；
2, the high inclination-angle lifting means is set at the kiln tail of the rotary kiln, thus by reducing agent from the discharge port of kiln tail
It is launched under direction, realizes the rear dispensing of reducing agent.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is the front view of the present invention；
Fig. 2 is the high inclination-angle lifting means right view of the present invention；
Fig. 3 is the high inclination-angle lifting means front view of the present invention；
Fig. 4 is the feed bin front view of the present invention；
Fig. 5 is the feed bin right view of the present invention.
The reference numerals are as follows：
1, batch hopper；2, the first elevator；3, rotary kiln；4, feed bin；5, high inclination-angle lifting means；501, striker plate；6, hot material
Tank；7, the second elevator；8, mineral hot furnace；9, mixing duct.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, technical scheme of the present invention will be carried out below
Detailed description.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art are obtained all without making creative work
Other embodiment belongs to the range that the present invention is protected.
Shown in Fig. 1-Fig. 5, the present invention provides a kind of laterite reduction apparatus, including batch hopper 1,3 and of rotary kiln
High inclination-angle lifting means 5, the rotary kiln 3 are obliquely installed, and the feed inlet of the rotary kiln 3 is higher than discharge port, the revolution
The feed end side of kiln 3 is provided with the first elevator 2, and the discharge port of the batch hopper 1 is stretched in the bottom of first elevator 2
The side-lower of lower section, the discharge port of the rotary kiln 3 is provided with feed bin 4, and 4 side of the feed bin is provided with the high inclination-angle and is promoted
Equipment 5 makes the oxidized metal that it is discharged with the rotary kiln 3 mix for the reducing agent in the feed bin 4 to be lifted up；
The side of the feed bin 4 is provided with hot material tank 6, for receiving mixed mineral aggregate and reducing agent, the one of the hot material tank 6
Side is provided with mineral hot furnace 8, and the second elevator 7 is provided between the hot material tank 6 and the mineral hot furnace 8, is used for hot material tank 6
In interior material lifting to the mineral hot furnace 8.
As optional embodiment, the gradient of the rotary kiln 3 is 3 ° -5 °, and is provided with and slips in the rotary kiln 3
Slot, so set, convenient for enabling mineral aggregate to be run to discharge port direction along chute.
The rotary kiln 3 has feed end to be divided into four regions to discharge end, be followed successively by preheating zone, roast area, reducing zone and
Discharge zone roasts the mineral aggregate after preheating by roast area so set, convenient for being preheated to mineral aggregate by preheating zone
It burns, so that it is deviate from the crystallization water, then enter back into reducing zone and tentatively restored, finally enter discharge zone.
The high inclination-angle lifting means 5 is the belt elevator that angle of inclination is 80 °, and the upper and lower ends of belt elevator
It is horizontality, so set, convenient for being delivered up the reducing agent being discharged in hopper to the discharge port of 3 kiln tail of rotary kiln
Side, the high inclination-angle lifting means 5 include two belts disposed in parallel altogether, and belt surface is provided with acclivitous striker plate
501, reducing agent can be blocked, reducing agent is enable to be delivered up together with belt, so set, convenient for improving reduction
The transfer efficiency of agent, and reducing agent is enable to be divided to two groups to shed downwards, to improve the blending ratio with semi-finished product mineral aggregate.
The feed bin 4 includes two hoppers altogether, and hopper is infundibulate, and the discharge ports of two hoppers corresponds to described big respectively
Two belts of inclination angle lifting means 5, so set, convenient for enable high inclination-angle lifting means 5 two belts simultaneously pair also
Former agent is conveyed.
Mixing duct 9 straight down, and described time are provided with below the top drain hole of the high inclination-angle lifting means 5
The discharge port of rotary kiln 3 also is located in mixing duct 9, and the hot material tank 6 is led in the lower section of the mixing duct 9, so set, just
In by mixing duct 9 to reducing agent and semi-finished product mineral aggregate in downward mixing landing when path spacing limit, to prevent
Reducing agent and semi-finished product mineral aggregate are fallen to 6 outside of hot material tank.
First elevator 2 and second elevator 7 are common scraper-type belt elevator, so set, just
In the elevated height by realizing material.
Using the above structure, laterite does not first add reducing agent before entering the rotary kiln 3 into laterite, to
Make laterite individually be admitted to the rotary kiln 3 with flue dust pellet to be reacted, to avoid reducing agent in the rotary kiln 3
It is burnt, laterite during discharging, passes through the high inclination-angle lifting means 5 after the high-temperature heating of the rotary kiln 3
Reducing agent is promoted to above 3 kiln tail discharge port of the rotary kiln, to which the mineral aggregate after making reducing agent be reduced with temperature mixes, and
It falls into together in the hot material tank 6, effectively prevent reducing agent that scaling loss occurs with high temperature, mixed mixture is carried described second
It rises to enter in the mineral hot furnace 8 under the castering action of machine 7 and be restored.
The present invention provides a kind of production technologies of laterite reduction apparatus, include the following steps：
1）, first by flue dust pelletize pellet mixed with laterite, pour into the batch hopper 1；
2）, the laterite mixture in the batch hopper 1 is promoted to through first elevator 2 in the rotary kiln 3；
3）, handled by four reaction areas into the laterite of the rotary kiln 3, treatment process is respectively：
1., first laterite is preheated, the Free water in complete evaporation laterite simultaneously provides temperature of charge；
2., when it is 700 DEG C~800 DEG C that the laterite of preheating, which is heated to temperature, the roasting abjection crystallization water, i.e. scaling loss, except arriving
0.5%, maximum 0.7%；
3., the reduction coal in flue dust pellet generate reducibility gas, so that the iron in laterite, nickel and cobalt/cobalt oxide is reduced；
4., the material after roasting reduction continue to move to 3 tail portion of the rotary kiln, into kiln tail discharge zone；
5., the discharge port discharge of the material of discharge zone through the rotary kiln 3；
4）, reducing agent in the feed bin 4 is promoted to above the kiln tail of the rotary kiln 3 by the high inclination-angle lifting means 5；
5）, the step 4）In be promoted to circulating of the reducing agent in the high inclination-angle lifting means 5 of the top of the rotary kiln 3
Under row effect, since gravity is trickled down downwards automatically, to which the material being discharged with the discharge port of the rotary kiln 3 mixes,
It drops downward into together in the hot material tank 6；
6）, second elevator 7 the semi-finished product mineral aggregate after the addition reducing agent in the hot material tank 6 is delivered to together it is described
It is restored in mineral hot furnace 8.
By above-mentioned production technology, reducing agent is made to be added in mineral aggregate after the completion of laterite sintering, avoid reducing agent into
Enter the rotary kiln 3, to effectively prevent reducing agent scaling loss, simultaneously because laterite is not added with when entering the rotary kiln 3
Reducing agent, therefore treatment effeciency of the rotary kiln 3 to laterite is also can further improve, and then improve the production effect of equipment
Rate.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (8)
1. a kind of laterite reduction apparatus, it is characterised in that：Including batch hopper（1）, rotary kiln（3）With high inclination-angle lifting means
（5）, the rotary kiln（3）It is obliquely installed, and the rotary kiln（3）Feed inlet be higher than discharge port, the rotary kiln（3）Into
Material end side is provided with the first elevator（2）, first elevator（2）Bottom stretch to the batch hopper（1）Discharge port
Lower section, the rotary kiln（3）The side-lower of discharge port be provided with feed bin（4）, the feed bin（4）Side, which is provided with, described inclines greatly
Angle lifting means（5）, it is used for the feed bin（4）Interior reducing agent is lifted up, and makes itself and the rotary kiln（3）The oxygen of discharge
Change metal mixed；
The feed bin（4）Side be provided with hot material tank（6）, for receiving mixed mineral aggregate and reducing agent, the hot material tank
（6）Side be provided with mineral hot furnace（8）, and the hot material tank（6）With the mineral hot furnace（8）Between be provided with the second elevator
（7）, it is used for hot material tank（6）Interior material lifting is to the mineral hot furnace（8）It is interior.
2. a kind of laterite reduction apparatus according to claim 1, it is characterised in that：The rotary kiln（3）Gradient be
3 ° -5 °, and the rotary kiln（3）Inside it is provided with chute.
3. a kind of laterite reduction apparatus according to claim 2, it is characterised in that：The rotary kiln（3）There is feed end to arrive
Discharge end is divided into four regions, is followed successively by preheating zone, roast area, reducing zone and discharge zone.
4. a kind of laterite reduction apparatus according to claim 1, it is characterised in that：The high inclination-angle lifting means（5）For
The belt elevator that angle of inclination is 80 °, and the upper and lower ends of belt elevator are horizontality, the high inclination-angle promotion is set
It is standby（5）Include two belts disposed in parallel altogether, belt surface is provided with acclivitous striker plate（501）, can be to reduction
Agent is blocked, and reducing agent is enable to be delivered up together with belt.
5. a kind of laterite reduction apparatus according to claim 4, it is characterised in that：The feed bin（4）Include two material altogether
Bucket, and hopper is infundibulate, the discharge port of two hoppers corresponds to the high inclination-angle lifting means respectively（5）Two belts.
6. a kind of laterite reduction apparatus according to claim 5, it is characterised in that：The high inclination-angle lifting means（5）'s
Mixing duct straight down is provided with below the drain hole of top（9）, and the rotary kiln（3）Discharge port also be located at mixing tube
Road（9）It is interior, the mixing duct（9）Lower section lead to the hot material tank（6）.
7. a kind of laterite reduction apparatus according to claim 1, it is characterised in that：First elevator（2）With it is described
Second elevator（7）It is common scraper-type belt elevator.
8. a kind of production technology of laterite reduction apparatus according to claim 1, it is characterised in that：Include the following steps：
1）, first by flue dust pelletize pellet mixed with laterite, pour into the batch hopper（1）It is interior；
2）, the batch hopper（1）Interior laterite mixture is through first elevator（2）It is promoted to the rotary kiln（3）It is interior；
3）, into the rotary kiln（3）Laterite handled by four reaction areas, treatment process is respectively：
1., first laterite is preheated, the Free water in complete evaporation laterite simultaneously provides temperature of charge；
2., when it is 700 DEG C~800 DEG C that the laterite of preheating, which is heated to temperature, the roasting abjection crystallization water, i.e. scaling loss, except arriving
0.5%, maximum 0.7%；
3., the reduction coal in flue dust pellet generate reducibility gas, so that the iron in laterite, nickel and cobalt/cobalt oxide is reduced；
4., the material after roasting reduction continues to the rotary kiln（3）Tail portion moves, into kiln tail discharge zone；
5., the material of discharge zone is through the rotary kiln（3）Discharge port discharge；
4）, the high inclination-angle lifting means（5）By the feed bin（4）Interior reducing agent is promoted to the rotary kiln（3）Kiln tail on
Side；
5）, the step 4）In be promoted to the rotary kiln（3）The reducing agent of top is in the high inclination-angle lifting means（5）Follow
Under inscription of loop effect, since gravity is trickled down downwards automatically, thus with the rotary kiln（3）Discharge port discharge material be blended in
Together, the hot material tank is dropped downward into together（6）It is interior；
6）, second elevator（7）By the hot material tank（6）Semi-finished product mineral aggregate after interior addition reducing agent is delivered to together
The mineral hot furnace（8）Inside restored.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810907511.XA CN108660311B (en) | 2018-08-10 | 2018-08-10 | Laterite ore reduction equipment and production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810907511.XA CN108660311B (en) | 2018-08-10 | 2018-08-10 | Laterite ore reduction equipment and production process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108660311A true CN108660311A (en) | 2018-10-16 |
| CN108660311B CN108660311B (en) | 2023-10-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810907511.XA Active CN108660311B (en) | 2018-08-10 | 2018-08-10 | Laterite ore reduction equipment and production process |
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| CN (1) | CN108660311B (en) |
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