CN206385225U - A kind of dedicated system for handling roe shape high-phosphorus hematite - Google Patents
A kind of dedicated system for handling roe shape high-phosphorus hematite Download PDFInfo
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- CN206385225U CN206385225U CN201621210067.9U CN201621210067U CN206385225U CN 206385225 U CN206385225 U CN 206385225U CN 201621210067 U CN201621210067 U CN 201621210067U CN 206385225 U CN206385225 U CN 206385225U
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- 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
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Abstract
The utility model discloses a kind of dedicated system for handling roe shape high-phosphorus hematite.The system includes：Raw material processing system, balling-up system, reduction roasting system, mill select system and acidleach processing system to constitute；Wherein, the compound entrance of the balling-up system is connected with the outlet of raw material processing system compound；Reduction roasting system has pelletizing entrance and metallized pellet outlet, and the pelletizing entrance is dried pelletizing outlet with the balling-up system and is connected；Once mill selects system to have metallized pellet entrance, metal iron powder outlet and a tailings outlet；Secondary grinding selects system to have metal iron powder entrance, Iron concentrate outlet and the outlet of secondary tailings, and metal iron powder entrance selects the outlet of system metal iron powder to be connected with once mill.The utility model system not only effectively make use of carbide slag solid waste but also reach that iron recovery is up to 92% in preferable dephosphorization effect, Iron concentrate, and phosphorus removal efficiency is more than 90%, solves roe shape high-phosphorus hematite dephosphorization difficulty, the low problem of disposal ability.
Description
Technical field
The utility model is related to a kind of dedicated system for handling roe shape high-phosphorus hematite, belongs to the comprehensive of roe shape high-phosphorus hematite
Conjunction utilizes field.
Background technology
Being mainly characterized by for China iron deposit stone is poor, thin and miscellaneous, and average Iron grade is 32%, and the iron ore of wherein most is needed
Carry out ore dressing processing.There are 3,000,000,000 tons of roe shape high-phosphorus hematites in China, and this iron ore is containing P high (0.4-1.0%), grade
Between 35%-50%, iron oxide crystal grain disseminated grain size is thin (1-3 μm), and it is extremely difficult to sort separation, thus is not opened effectively
Adopt utilization.
Roe shape high-phosphorus hematite has oolitic texture, and it is embedding that bloodstone mixes numerous shape in flakey, threadiness with gangue mineral
Phosphorus preservation in cloth, ore is in collophane, and, formation concentric layered shell polysaccharide phase mixed in together with the chamosite rich in iron oxide
Between oolith structure；If not changing the occurrence status of iron, iron selected can not be just enriched with, and phosphorus also can not be rejected effectively.Due to its ore deposit
Thing design feature, the ore dressing difficulty of oolitic hematite is very big, and dephosphorization is difficult, and disposal ability is low.The country is to oolitic hematite at present
The ore dressings such as the substantial amounts of reverse flotation of strong magnetic one, the gravity treatment of strong magnetic one, flotation, reverse flotation and high-gradient magnetic separation experiment has been carried out, but all
It is difficult to obtain preferable sorting index.
Chinese Patent Application No. is provided in a kind of high-phosphorus hematite for CN201010033784.X utility model patent
P elements and the method for ferro element physics dissociation, specifically include following steps：High-phosphorus hematite is roughly ground, sieved, dry after make
Ultrafine Grinding is carried out with high velocity air mill technology, the high-phosphorus hematite of the mesh of normal granulometry 80~200 is finely ground to particle mean size for 2 μm
Ultra-fine, the high-phosphorus hematite particle size distribution range after fine grinding is 102nm~104nm, make P elements, ferro element dissociation.
The utility model patent, which implements raw material, need to carry out Ultrafine Grinding, and condition requirement should not strictly be mass produced, and actual conditions phosphorus
Element, ferro element separation are insufficient.
Chinese Patent Application No. provides a kind of red iron of roe shape high phosphorus for CN200610124741.6 utility model patent
The beneficiation method of ore deposit, specifically includes following steps：By weight percentage composition by 80~99% it is broken after the red iron of roe shape high phosphorus
Ore deposit, 1~20% reducing agent coal dust load shaft furnace or rotary kiln is calcined, and sintering temperature is 700~1050 DEG C, during roasting
Between be 0.5~2.5h, sealing be cooled to room temperature.Roasted ore is subjected to low intensity magnetic separation after crushing, grinding again.Then magnetic separation is obtained
Rough concentrate adjust pH value to 8~12, add iron ore inhibitor 0.5~3.0kg/t of sulfonated starch, add activator 0.2~
2.0kg/t, is eventually adding 0.2~3.0kg/t of collecting agent and carries out reverse flotation.Major defect present in this method is as follows：
1. the utility model handles roe shape high-phosphorus hematite complex process, treatment effeciency is low.
2. raw material roasting use rotary kiln, reduction temperature is low, heat loss is big and kiln in easily ring formation, the calcination process time compared with
It is long, most long need 2.5 hours.
With the fast development of steel and iron industry, quickly, rich ore is fewer and fewer for iron ore deposit wear rate, it would be highly desirable to need exploitation
A kind of method of efficient process roe shape high-phosphorus hematite, improves dephosphorization efficiency, increases disposal ability.
Utility model content
Technical problem to be solved in the utility model is solved present in existing roe shape high-phosphorus hematite processing method
Dephosphorization it is difficult, there is provided a kind of special system of new processing roe shape high-phosphorus hematite for the problems such as disposal ability is low, production cost is high
System, the system can effectively reduce production process energy consumption, improve utilization rate of equipment and installations, increase production capacity, reduce into production cost.
Technical problem to be solved in the utility model is achieved through the following technical solutions：
It is a kind of handle roe shape high-phosphorus hematite dedicated system, the dedicated system by raw material processing system, balling-up system, also
Former roasting system, mill select system and acidleach processing system to constitute；Wherein, there is the raw material processing system roe shape high phosphorus to go out iron ore
Entrance, reduction coal entrance, carbide slag entrance and compound outlet；The balling-up system has compound entrance and dries pelletizing
Mouthful, the compound entrance is connected with the outlet of raw material processing system compound；The reduction roasting system have pelletizing entrance and
Metallized pellet is exported, and the pelletizing entrance is dried pelletizing outlet with the balling-up system and is connected；The once mill selects system to have
There are metallized pellet entrance, metal iron powder outlet and a tailings outlet；The secondary grinding select system have metal iron powder entrance,
Iron concentrate is exported and the outlet of secondary tailings, and the metal iron powder entrance selects the outlet of system metal iron powder to be connected with the once mill.
The utility model adjusts raw material basicity, improved in rotary hearth furnace by controlling reduction coal and carbide slag in raw material to match
Distributing mode, effectively reduction production process energy consumption, improve utilization rate of equipment and installations, increase production capacity, reduce into production cost.The utility model
Not only it effectively make use of carbide slag solid waste but also reached in preferable dephosphorization effect, metal iron powder iron recovery up to 92.31%, dephosphorization
Rate is more than 90%, solves roe shape high-phosphorus hematite dephosphorization difficulty, and the problem of disposal ability is low realizes roe shape high-phosphorus hematite
Efficiently utilize.
The main beneficial effect of technical solutions of the utility model：
1. controlling the dual alkalinity of dispensing by being incorporated carbide slag, roe shape high-phosphorus hematite is reduced by heating, makes iron
Ore deposit is reduced into metallic iron agglomeration, by that effectively can be separated metal iron powder and phosphorous gangue after a fine grinding magnetic separation, both
Effectively carbide slag solid waste make use of to reach preferable dephosphorization effect again, metal iron powder is carried out into secondary grinding choosing effectively improves dephosphorization
Rate is more than 90%.
2. using different mixed carbon comtent pelletizings and layer-by-layer distribution, realize that multilayer pelletizing is synchronously reduced in stove, makes metal pelletizing also
It is former abundant, obtain Iron concentrate and tailings through grinding choosing processing twice.
3. multilayer cloth can improve fabric thickness in stove, utilization rate of equipment and installations can be effectively improved, is ensureing that product index is qualified
On the premise of production capacity greatly improve, than conventional method production capacity improve 3-5 times.
Brief description of the drawings
The schematic diagram of the dedicated system of Fig. 1 the utility model processing roe shape high-phosphorus hematite.
Embodiment
Further describe the utility model with reference to specific embodiment, advantage and feature of the present utility model will be with
Description and it is apparent.But these embodiments are only exemplary, do not constitute any limitation to scope of the present utility model.
It will be understood by those skilled in the art that can be to the utility model skill under without departing from spirit and scope of the present utility model
The details and form of art scheme are modified or replaced, but these modifications and replacement each fall within protection domain of the present utility model
It is interior.
Embodiment 1
Somewhere contains TFe42.66%, the roe shape high-phosphorus hematite containing P 0.22%；According to roe shape high-phosphorus hematite: coking coal=
100: 15 mass ratio and be incorporated carbide slag control compound dual alkalinity be 0.3, compound mix after make low coal blending
Measure pelletizing；According to roe shape high-phosphorus hematite: coking coal=100: 24 mass ratio, and it is incorporated the binary that carbide slag controls compound
Basicity is 0.3, and compound makes high coal blending amount pelletizing after mixing；By the low coal blending amount pelletizing of preparation and high coal blending amount pelletizing through dry
After dry, along the revolving burner bottom direction away from the rotary hearth furnace on bottom and top layer be high coal blending amount pelletizing, intermediate layer is matched somebody with somebody to be low
Pelletizing is distributed into the material area of rotary hearth furnace by the distributing mode of coal amount pelletizing carries out reduction roasting, 1100 DEG C of reduction roasting temperature,
It is real so as to obtain Iron concentrate and tailings respectively through grinding choosing processing twice after gained metallized pellet water quenching after 20 minutes time
Existing iron, phosphorus separation, dephosphorization rate is up to 90%, and iron recovery is up to 88.65% wherein in Iron concentrate.
Embodiment 2
Somewhere contains TFe42.66%, the roe shape high-phosphorus hematite containing P 0.22%；According to roe shape high-phosphorus hematite: lignite=
100: 20 mass ratio, which mixes and is incorporated carbide slag, controls the dual alkalinity of compound to be 0.4, and compound is made low after mixing
Coal blending amount pelletizing；According to roe shape high-phosphorus hematite: go back lignite=100: 27 mass ratio mixes and is incorporated carbide slag control and mixes
The dual alkalinity for closing material is 0.4, and compound makes high coal blending amount pelletizing after mixing；By the low coal blending amount pelletizing of preparation and high coal blending
Measure pelletizing after drying, along the revolving burner bottom direction away from the rotary hearth furnace on bottom and top layer be high coal blending amount pelletizing, in
Pelletizing is distributed into the material area of rotary hearth furnace and carries out reduction roasting by interbed for the distributing mode of low coal blending amount pelletizing, reduction roasting temperature
1250 DEG C of degree, after 30 minutes time, through grinding choosing processing twice so as to obtaining metal respectively after gained metallized pellet water quenching
Iron powder and tailings realize iron, phosphorus separation, and dephosphorization rate is up to 92%, and iron recovery is up to 91.52% wherein in Iron concentrate.
Embodiment 3
Somewhere contains TFe42.66%, the roe shape high-phosphorus hematite containing P 0.22%；According to roe shape high-phosphorus hematite: anthracite
=100: 30 mass ratio, which mixes and is incorporated carbide slag, controls the dual alkalinity of compound to be 0.6, and compound is made after mixing
Low coal blending amount pelletizing；According to roe shape high-phosphorus hematite: anthracite=100: 36 mass ratio mixes and is incorporated carbide slag control
The dual alkalinity of compound is 0.6, and compound makes high coal blending amount pelletizing after mixing；The low coal blending amount pelletizing and height of preparation are matched somebody with somebody
Coal amount pelletizing after drying, along the revolving burner bottom direction away from the rotary hearth furnace on bottom and top layer be high coal blending amount pelletizing,
Pelletizing is distributed into the material area of rotary hearth furnace and carries out reduction roasting, reduction roasting by intermediate layer for the distributing mode of low coal blending amount pelletizing
After 1300 DEG C of temperature, 40 minutes time, through grinding choosing processing twice so as to obtaining gold respectively after gained metallized pellet water quenching
Category iron powder and tailings realize iron, phosphorus separation, and dephosphorization rate is up to 93%, and iron recovery is up to 92.31% wherein in Iron concentrate.
Embodiment 4
Somewhere contains TFe42.66%, the roe shape high-phosphorus hematite containing P 0.22%；According to roe shape high-phosphorus hematite: coking coal=
100: 15 mass ratio and be incorporated carbide slag control compound dual alkalinity be 0.6, compound mix after make low coal blending
Measure pelletizing；According to roe shape high-phosphorus hematite: coking coal=100: 18 mass ratio, and it is incorporated the binary that carbide slag controls compound
Basicity is 0.6, and compound makes high coal blending amount pelletizing after mixing；By the low coal blending amount pelletizing of preparation and high coal blending amount pelletizing through dry
After dry, along the revolving burner bottom direction away from the rotary hearth furnace on bottom and top layer be high coal blending amount pelletizing, intermediate layer is matched somebody with somebody to be low
Pelletizing is distributed into the material area of rotary hearth furnace by the distributing mode of coal amount pelletizing carries out reduction roasting, 1100 DEG C of reduction roasting temperature,
After 20 minutes time, through grinding choosing processing twice so as to obtaining metal iron powder and tailings respectively after gained metallized pellet water quenching
Iron, phosphorus separation are realized, dephosphorization rate is up to 91%, and iron recovery is up to 90.57% wherein in Iron concentrate.
Embodiment 5
Somewhere contains TFe42.66%, the roe shape high-phosphorus hematite containing P 0.22%；According to roe shape high-phosphorus hematite: lignite=
100: 30 mass ratio, which mixes and is incorporated carbide slag, controls the dual alkalinity of compound to be 0.5, and compound is made low after mixing
Coal blending amount pelletizing；According to roe shape high-phosphorus hematite: lignite=100: 28 mass ratio mixes and is incorporated carbide slag control mixing
The dual alkalinity of material is 0.5, and compound makes high coal blending amount pelletizing after mixing；By the low coal blending amount pelletizing and high coal blending amount of preparation
Pelletizing after drying, along the revolving burner bottom direction away from the rotary hearth furnace on bottom and top layer be high coal blending amount pelletizing, it is middle
Pelletizing is distributed into the material area of rotary hearth furnace and carries out reduction roasting by floor for the distributing mode of low coal blending amount pelletizing, reduction roasting temperature
1250 DEG C, after 30 minutes time, through grinding choosing processing twice so as to obtaining metallic iron respectively after gained metallized pellet water quenching
Powder and tailings realize iron, phosphorus separation, and dephosphorization rate is up to 93%, and iron recovery is up to 91.68% wherein in Iron concentrate.
Comparative example 1
Somewhere contains TFe42.66%, the roe shape high-phosphorus hematite containing P 0.22%；According to roe shape high-phosphorus hematite: coking coal=
100: 15 mass ratio and be incorporated carbide slag control compound dual alkalinity be 0.2, compound mix after make low coal blending
Measure pelletizing；According to roe shape high-phosphorus hematite: coking coal=100: 24 mass ratio, and it is incorporated the binary that carbide slag controls compound
Basicity is 0.2, and compound makes high coal blending amount pelletizing after mixing；By the low coal blending amount pelletizing of preparation and high coal blending amount pelletizing through dry
After dry, along the revolving burner bottom direction away from the rotary hearth furnace on bottom and top layer be high coal blending amount pelletizing, intermediate layer is matched somebody with somebody to be low
Pelletizing is distributed into the material area of rotary hearth furnace by the distributing mode of coal amount pelletizing carries out reduction roasting, 1100 DEG C of reduction roasting temperature,
After 20 minutes time, through grinding choosing processing twice so as to obtaining metal iron powder and tailings respectively after gained metallized pellet water quenching
Iron, phosphorus separation are realized, dephosphorization rate is 81%, iron recovery is 83.24% wherein in Iron concentrate.
Comparative example 2
Somewhere contains TFe42.66%, the roe shape high-phosphorus hematite containing P 0.22%；According to roe shape high-phosphorus hematite: lignite=
100: 20 mass ratio, which mixes and is incorporated carbide slag, controls the dual alkalinity of compound to be 0.7, and compound is made low after mixing
Coal blending amount pelletizing；According to roe shape high-phosphorus hematite: lignite=100: 27 mass ratio mixes and is incorporated carbide slag control mixing
The dual alkalinity of material is 0.7, and compound makes high coal blending amount pelletizing after mixing；By the low coal blending amount pelletizing and high coal blending amount of preparation
Pelletizing after drying, along the revolving burner bottom direction away from the rotary hearth furnace on bottom and top layer be high coal blending amount pelletizing, it is middle
Pelletizing is distributed into the material area of rotary hearth furnace and carries out reduction roasting by floor for the distributing mode of low coal blending amount pelletizing, reduction roasting temperature
1250 DEG C, after 30 minutes time, through grinding choosing processing twice so as to obtaining metallic iron respectively after gained metallized pellet water quenching
Powder and tailings realize iron, phosphorus separation, and dephosphorization rate is 83%, and iron recovery is up to 85.12% wherein in Iron concentrate.
Comparative example 3
Somewhere contains TFe42.66%, the roe shape high-phosphorus hematite containing P 0.22%；According to roe shape high-phosphorus hematite: lignite=
100: 30 mass ratio, which mixes and is incorporated carbide slag, controls the dual alkalinity of compound to be 0.7, and compound is made low after mixing
Coal blending amount pelletizing；According to roe shape high-phosphorus hematite: lignite=100: 28 mass ratio mixes and is incorporated carbide slag control mixing
The dual alkalinity of material is 0.7, and compound makes high coal blending amount pelletizing after mixing；By the low coal blending amount pelletizing and high coal blending amount of preparation
Pelletizing after drying, along the revolving burner bottom direction away from the rotary hearth furnace on bottom and top layer be high coal blending amount pelletizing, it is middle
Pelletizing is distributed into the material area of rotary hearth furnace and carries out reduction roasting by floor for the distributing mode of low coal blending amount pelletizing, reduction roasting temperature
1250 DEG C, after 30 minutes time, through grinding choosing processing twice so as to obtaining metallic iron respectively after gained metallized pellet water quenching
Powder and tailings realize iron, phosphorus separation, and dephosphorization rate is 85%, and iron recovery is 87.44% wherein in Iron concentrate.
Referring to Fig. 1, a kind of dedicated system for realizing processing method provided by the utility model, by raw material processing system
S100, balling-up system S200, reduction roasting system S300, mill select system S400 and acidleach processing system S500 to constitute；Wherein, institute
Stating raw material processing system S100, there is roe shape high phosphorus to go out iron ore entrance 101, reduction coal entrance 102, carbide slag entrance 103 and mixing
Material outlet 104；The balling-up system S200 have compound entrance 201 and dry pelletizing outlet 202, the compound entrance with
The outlet of raw material processing system compound is connected；There is the reduction roasting system S300 pelletizing entrance 301 and metallized pellet to go out
Mouth 302, the pelletizing entrance is dried pelletizing outlet with the balling-up system and is connected；The once mill selects system S400 to have metal
Pellet entrance 401, metal iron powder outlet 402 and a tailings outlet 403；The secondary grinding selects system S500 to have metallic iron
Powder entrance 501, Iron concentrate outlet 502 and secondary tailings outlet 503, the metal iron powder entrance select system gold with the once mill
Belong to iron powder outlet to be connected.
The raw material processing system S100 includes drying plant, levigate equipment, screening plant and mixing apparatus；
The pelletizing system S200 includes balling-up equipment and drying equipment；
Described reduction roasting system S300 includes rotary hearth furnace and its supporting subsystem；
The once mill selects system S400 to include water quenching, ore grinding, magnetic separation filter plant；
The secondary grinding selects system S500 to include the equipment such as ore grinding, magnetic separation, filtering.
Claims (6)
1. a kind of dedicated system for handling roe shape high-phosphorus hematite, it is characterised in that：By raw material processing system (S100), balling-up
System (S200), reduction roasting system (S300), once mill select system (S400) and secondary grinding select system (S500) composition；Its
In, there is the raw material processing system (S100) roe shape high phosphorus to go out iron ore entrance, reduction coal entrance, carbide slag entrance and compound
Outlet；The balling-up system (S200) has compound entrance and dries pelletizing outlet, the compound entrance and Feedstock treating
The outlet of system (S100) compound is connected；There is the reduction roasting system (S300) pelletizing entrance and metallized pellet to export,
The pelletizing entrance is dried pelletizing outlet with the balling-up system (S200) and is connected；The once mill selects system (S400) to have gold
Belong to pellet entrance, metal iron powder outlet and a tailings outlet；The secondary grinding selects system (S500) to enter with metal iron powder
Mouth, Iron concentrate outlet and the outlet of secondary tailings, the metal iron powder entrance select system (S400) metal iron powder with the once mill
Outlet is connected.
2. according to the dedicated system described in claim 1, it is characterised in that：The raw material processing system (S100) sets including drying
Standby, levigate equipment, screening plant and mixing apparatus.
3. according to the dedicated system described in claim 1, it is characterised in that：The balling-up system (S200) include balling-up equipment with
And drying equipment.
4. according to the dedicated system described in claim 1, it is characterised in that：The reduction roasting system (S300) includes rotary hearth furnace
And its supporting subsystem.
5. according to the dedicated system described in claim 1, it is characterised in that：It is described once mill select system (S400) include water quenching,
Ore grinding, magnetic separation and filter plant.
6. according to the dedicated system described in claim 1, it is characterised in that：The secondary grinding select system (S500) include ore grinding,
Magnetic separation, filter plant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621210067.9U CN206385225U (en) | 2016-11-09 | 2016-11-09 | A kind of dedicated system for handling roe shape high-phosphorus hematite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621210067.9U CN206385225U (en) | 2016-11-09 | 2016-11-09 | A kind of dedicated system for handling roe shape high-phosphorus hematite |
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| Publication Number | Publication Date |
|---|---|
| CN206385225U true CN206385225U (en) | 2017-08-08 |
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ID=59486537
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621210067.9U Expired - Fee Related CN206385225U (en) | 2016-11-09 | 2016-11-09 | A kind of dedicated system for handling roe shape high-phosphorus hematite |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206385225U (en) |
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2016
- 2016-11-09 CN CN201621210067.9U patent/CN206385225U/en not_active Expired - Fee Related
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