CN205223318U - Ore pelletizing preparation facilities of burn -ining - Google Patents
Ore pelletizing preparation facilities of burn -ining Download PDFInfo
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- CN205223318U CN205223318U CN201521011625.4U CN201521011625U CN205223318U CN 205223318 U CN205223318 U CN 205223318U CN 201521011625 U CN201521011625 U CN 201521011625U CN 205223318 U CN205223318 U CN 205223318U
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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
- 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
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Abstract
The utility model provides an ore pelletizing preparation facilities of burn -ining, including equipment of baking and cooling recovery plant, wherein the equipment of baking enters the mouth including the room of baking, and the preheating zone bakes district ministry of transport, bakes the district, the blanking funnel, and the material transport device coheres the district, coheres district conveyor, and the device is given to the adhesive, and the finished product surge drum is through fully preheating the ore raw material to surveying and monitoring preheating temperature, control preheating time bakes through high temperature, carries out the refrigerated to the material of sintering and adds the adhesive simultaneously, and the ore pelletizing takes shape rapidly and directly becomes to expect.
Description
Technical field
The utility model relates to a kind of agglomerating plant for the preparation of ore pellets, specifically a kind of ore pellets pre-burning preparation facilities.
Background technology
Iron ore pellet method is one of iron ore agglomeration method.By various iron ore concentrate or levigate natural ore is equipped with water and pelletizing binder makes green-ball, then make pellet through high temperature or low-temperature bake.Pellet has the characteristics such as ferrous grade is high, epigranular, reducing property are good, physical strength is high, shelf-stable.Pellet consolidation mechanism: at the temperature of 300 ~ 800 DEG C, magnetite is oxidized, generates Fe2O3 crystallite.Newly-generated Fe2O3 crystallite has the transfer ability of height, impels crystallite to grow up formation cross structure, by adhered to one another for particle each in green-ball.But growing up of this crystallite is very limited, so now pellet strength is not high, only have when green-ball is in strong oxidizing property atmosphere, when being heated to 1000 ~ 1300 DEG C, the crystallite of Fe2O3 can recrystallize, and grow up to the hematite crystals mutually closely joined together, at this moment pellet strength reaches the highest; If when Heating temperature is higher than 1300 DEG C, then due to following reaction, and make the consolidation between particle weaken, pellet strength declines.
Main preparation process: cloth, is distributed in green-ball the procedure on burning machine.Major equipment is roll-type material distributing machine, and by chain or geartransmission, the work of roll-type material distributing machine is completed by the rotation of roller.Roller forms an association system, by specific obliquity, carries green-ball downwards from larger height.The sense of rotation that green-ball rolls downwards is contrary with the sense of rotation of roller.Roller footpath and roll gap have certain relation with green-ball granularity.Green-ball rolls in roll-type material distributing machine, and its intensity can further improve.Roll-type material distributing machine reliable operation, cloth is even, easy to operate, is a kind of desirable apparatus for distributing.In addition, also have and to use shuttle belt and wide leather belt material distributing.Roasting, makes green-ball generation series of physical, chemical transformation, significantly improves its physical strength, with the requirement of satisfied transport and blast-furnace smelting.Roasting comprises drying, preheating, roasting, soaking and cooling 5 processes.The temperature of drying process is generally 200 ~ 400 DEG C, and principal reaction is the moisture of evaporation green-ball, and gets rid of part crystal water in material.The temperature of warm is 900 ~ 1000 DEG C, and principal reaction is that magnetite is oxidized to rhombohedral iron ore, carbonate minerals decomposes, the decomposition of sulfide and oxidation and some solid state reaction; The temperature of roasting process is 1200 ~ 1300 DEG C, principal reaction is: the crystallization of ferriferous oxide and recrystallize, grain growth, solid state reaction and the therefore fusing of the low melting component produced or eutectic and forming section liquid phase, pellet volumetric shrinkage and dense structure.The temperature of equal thermal process is a little less than maturing temperature, and main purpose pelletizing crystal inside is grown up and grows complete as far as possible, makes mineral composition homogenizing, eliminate a part of internal stress.Process of cooling is the temperature that the temperature of pellet is cooled to travelling belt can bears from more than 1000 DEG C.For different raw materials, different roasting apparatuss, the temperature levels of each process, perdurability and atmosphere are all not identical.
Produce the method for iron ore pellet based on high-temperature roasting concretion method, major equipment has shaft furnace, belt type roasting machine and chain to calculate machine--three kinds, rotary kiln.Shaft furnace is the earliest in order to a kind of equipment in agglomerates ore deposit, and its structure is simple, and use common refractory, capital cost is low; But the temperature in stove and atmosphere distribution are difficult to control, and single machine production ability is low, only should use the pellet of magnetite raw material, therefore seldom use.Belt type roasting machine can process the pellet of various breeze, and single machine production ability is large, and production process is easy to control, but needs high temperature heat-resisting material, and capital cost is higher.Rotary kiln can process the pellet of various breeze, single machine production ability is large, and according to manufacturing technique requirent, can control kiln atmosphere, produces the chlorination of acid pellet, prereduction pellet and comprehensive treating process multi-metallic minerals and sodium pelletizing etc.; This equipment initial cost is high, but power consumption and working expense low, easy ring formation during misoperation.Cold bound pellet method powdered iron ore coordinates with cakingagent and balling-up, and maintenance under normal temperature or lesser temps, makes it to have some strength.
Summary of the invention
The purpose of this utility model is to provide a kind of ore pellets pre-burning preparation facilities, this ore pellets pre-burning preparation facilities, by arranging rational pre-burned space and burn-in process control, is intended to solve in pelletizing dehydration and sloughs not enough problem owing to baking insufficient crystal water caused.
The technical scheme that the utility model is adopted for achieving the above object is to provide a kind of ore pellets pre-burning preparation facilities, comprises the equipment of baking and cools back receiving unit, the equipment that wherein bakes comprises and bakes chamber inlet, preheating zone, bakes transportation division of district, bakes district, blanking funnel, material conveyor, cohere district, cohere district's e Foerderanlage, cakingagent feed apparatus, finished product surge drum, wherein, preheating zone next-door neighbour bakes chamber inlet, preheating zone arranges multiple preheat burner, preheat burner is positioned at top, preheating zone, bottom preheating zone, material transfer equipment is set, the material transfer equipment of preheating zone is middle low carbon steel silk metal conveyor belt, preheating zone is close to downwards and bakes transportation division of district, bake the carrier plate of resistance to sintering that transportation division of district is downward-sloping miter angle, bake transportation division of district leading portion top and multiple convection preventing thermal insulative board is set, set temperature detector on thermal insulative board, bake transportation division of district rear top and multiple burner is set, burner is acute angle with baking transportation division of district angle, bake transportation division of district rear and connect blanking funnel, blanking funnel connects material conveyor downwards, material conveyor is middle low carbon steel silk metal conveyor belt, conveying belt and ground angle are 30 degree, connect below conveying belt end and cohere district's e Foerderanlage, this e Foerderanlage is similarly middle low carbon steel silk metal conveyor belt, cohere above district's e Foerderanlage and arrange multiple cakingagent feed apparatus, cakingagent feed apparatus is spray header, coheres below district's delivery device tip and arranges finished product surge drum.
As preferably, the convection preventing thermal insulative board baking transportation division of district is set to two, each thermal insulative board is arranged two hygrosensors.
As preferably, baking multiple burners that transportation division of district rear top arranges is high-power double-cyclone burning device, and preheat burner is ethanol combustor.
As preferably, above-mentioned conveyer is the adjustable belt wheel transmitting device of rotating speed.
The utility model beneficial effect: the utility model passes through the abundant preheating of ore raw material, and preheating temperature is detected and monitors, control warm up time, bake through high temperature, cakingagent is added while the material of sintering is cooled, ore pellets is shaped rapidly and directly becomes material, avoids the unstable efflorescence of pelletizing.
accompanying drawing illustrates:
Fig. 1 be the utility model comprise material conveyor, cohere district and finished product surge drum cool back receiving unit structural representation.
Fig. 2 is the structural representation that the utility model bakes equipment.
In figure: 1 material conveyor; 2 material transportation rollers; 3 cakingagent transfer limes; 4 material conveyor pillars; Material after 5 sintering; 6 cohere district's e Foerderanlage; 7 e Foerderanlage transport rollers; 8 finished products collect nozzle; 9 spray headers; 10 finished product surge drums; 11 high-power double-cyclone burning devices; 12 convection preventing thermal insulative boards; 13 ethanol combustors; 14 bake district; 15 bake chamber inlet; 16 carrier plates of resistance to sintering; 17 blanking funnels; 18 middle low carbon steel silk metal conveyor belts; 19 middle low carbon steel silk metal conveying rollers.
embodiment:
To be specifically described a kind of ore pellets pre-burning of the utility model preparation facilities with reference to the accompanying drawings below.
The utility model provides a kind of ore pellets pre-burning preparation facilities, comprises the equipment of baking and cools back receiving unit, the equipment that wherein bakes comprises and bakes chamber inlet 15, preheating zone, and bake transportation division of district, bake district 14, blanking funnel 17, material conveyor 1, coheres district, coheres district's e Foerderanlage 6, cakingagent feed apparatus, finished product surge drum 10, wherein, preheating zone next-door neighbour bakes chamber inlet 15, preheating zone arranges multiple preheat burner, preheat burner is positioned at top, preheating zone, bottom preheating zone, material transfer equipment is set, the material transfer equipment of preheating zone is middle low carbon steel silk metal conveyor belt 18, preheating zone is close to downwards and bakes transportation division of district, bake the carrier plate of resistance to sintering 16 that transportation division of district is downward-sloping miter angle, bake transportation division of district leading portion top and multiple convection preventing thermal insulative board 12 is set, set temperature detector on thermal insulative board, bake transportation division of district rear top and multiple burner is set, burner is acute angle with baking transportation division of district angle, bake transportation division of district rear and connect blanking funnel 17, blanking funnel 17 connects material conveyor 1 downwards, material conveyor 1 is middle low carbon steel silk metal conveyor belt, conveying belt and ground angle are 30 degree, connect below conveying belt end and cohere district's e Foerderanlage 6, this e Foerderanlage is similarly middle low carbon steel silk metal conveyor belt, cohere above district's e Foerderanlage 6 and arrange multiple cakingagent feed apparatus, cakingagent feed apparatus is spray header 9, coheres below district's e Foerderanlage 6 end and arranges finished product surge drum 10.
The convection preventing thermal insulative board 12 baking transportation division of district is set to two, each thermal insulative board is arranged two hygrosensors.
The multiple burners baking the setting of transportation division of district rear top are high-power double-cyclone burning device 11, and preheat burner is ethanol combustor 13.
Above-mentioned conveyer is the adjustable belt wheel transmitting device of rotating speed.
The utility model is by carrying out preheating to ore raw material, control warm up time, and preheating temperature is detected and monitors, bake through high temperature, cakingagent is added while the material of sintering is cooled, ore pellets is shaped rapidly and directly becomes material, avoids the efflorescence of unstable pelletizing, and the pelletizing even compact obtained.
Claims (4)
1. an ore pellets pre-burning preparation facilities, comprise the equipment of baking and cool back receiving unit, the equipment that bakes in it is characterized in that comprises and bakes chamber inlet (15), preheating zone, bake transportation division of district, bake district (14), blanking funnel (17), material conveyor (1), cohere district, cohere district's e Foerderanlage (6), cakingagent feed apparatus, finished product surge drum (10), wherein, preheating zone next-door neighbour bakes chamber inlet (15), preheating zone arranges multiple preheat burner, preheat burner is positioned at top, preheating zone, bottom preheating zone, material transfer equipment is set, the material transfer equipment of preheating zone is middle low carbon steel silk metal conveyor belt (18), preheating zone is close to downwards and bakes transportation division of district, bake the carrier plate of resistance to sintering (16) that transportation division of district is downward-sloping miter angle, bake transportation division of district leading portion top and multiple convection preventing thermal insulative board (12) is set, set temperature detector on thermal insulative board, bake transportation division of district rear top and multiple burner is set, burner is acute angle with baking transportation division of district angle, bake transportation division of district rear and connect blanking funnel (17), blanking funnel (17) connects material conveyor (1) downwards, material conveyor (1) is middle low carbon steel silk metal conveyor belt, conveying belt and ground angle are 30 degree, connect below conveying belt end and cohere district's e Foerderanlage (6), this e Foerderanlage is similarly middle low carbon steel silk metal conveyor belt, cohere district's e Foerderanlage (6) top and arrange multiple cakingagent feed apparatus, cakingagent feed apparatus is spray header (9), coheres below district's e Foerderanlage (6) end and arranges finished product surge drum (10).
2. a kind of ore pellets pre-burning preparation facilities as claimed in claim 1, is characterized in that the convection preventing thermal insulative board (12) baking transportation division of district is set to two, each thermal insulative board is arranged two hygrosensors.
3. a kind of ore pellets pre-burning preparation facilities as claimed in claim 1, it is characterized in that the multiple burners baking the setting of transportation division of district rear top are high-power double-cyclone burning device (11), preheat burner is ethanol combustor (13).
4. a kind of ore pellets pre-burning preparation facilities as claimed in claim 1, is characterized in that above-mentioned conveyer is the adjustable belt wheel transmitting device of rotating speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521011625.4U CN205223318U (en) | 2015-12-08 | 2015-12-08 | Ore pelletizing preparation facilities of burn -ining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521011625.4U CN205223318U (en) | 2015-12-08 | 2015-12-08 | Ore pelletizing preparation facilities of burn -ining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205223318U true CN205223318U (en) | 2016-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521011625.4U Expired - Fee Related CN205223318U (en) | 2015-12-08 | 2015-12-08 | Ore pelletizing preparation facilities of burn -ining |
Country Status (1)
| Country | Link |
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| CN (1) | CN205223318U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109234485A (en) * | 2017-07-11 | 2019-01-18 | 气体产品与化学公司 | System and method for preheating the granule containing metal |
| US11852570B2 (en) * | 2016-09-08 | 2023-12-26 | Foss Analytical A/S | Method for preparing a sample for laser induced breakdown spectroscopy |
-
2015
- 2015-12-08 CN CN201521011625.4U patent/CN205223318U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11852570B2 (en) * | 2016-09-08 | 2023-12-26 | Foss Analytical A/S | Method for preparing a sample for laser induced breakdown spectroscopy |
| CN109234485A (en) * | 2017-07-11 | 2019-01-18 | 气体产品与化学公司 | System and method for preheating the granule containing metal |
| CN109234485B (en) * | 2017-07-11 | 2021-04-23 | 气体产品与化学公司 | System and method for preheating metal-containing pellets |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160511 Termination date: 20161208 |
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| CF01 | Termination of patent right due to non-payment of annual fee |