CN101974665A - Magnesium, magnesium alloy and wastes thereof based production line for producing particle magnesium desulfurizing agent/particle magnesium alloy desulfurizing agent - Google Patents
Magnesium, magnesium alloy and wastes thereof based production line for producing particle magnesium desulfurizing agent/particle magnesium alloy desulfurizing agent Download PDFInfo
- Publication number
- CN101974665A CN101974665A CN2010105618587A CN201010561858A CN101974665A CN 101974665 A CN101974665 A CN 101974665A CN 2010105618587 A CN2010105618587 A CN 2010105618587A CN 201010561858 A CN201010561858 A CN 201010561858A CN 101974665 A CN101974665 A CN 101974665A
- Authority
- CN
- China
- Prior art keywords
- magnesium
- magnesium alloy
- particle
- refining furnace
- production line
- 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.)
- Granted
Links
Images
Classifications
-
- 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
- Y02P10/10—Reduction of greenhouse gas [GHG] emissions
- Y02P10/143—Reduction of greenhouse gas [GHG] emissions of methane [CH4]
Landscapes
- Treatment Of Steel In Its Molten State (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to a magnesium, magnesium alloy and wastes thereof based production line for producing a particle magnesium desulfurizing agent/particle magnesium alloy desulfurizing agent, adopting the technical scheme which comprises a raw material preheating and refining system, a granulating and injecting system, a vacuum siphon system, a sieving and finished product processing system and an automatic control and operation system. The production line overcomes the defects of high energy consumption, serious environmental pollution, dangers caused by easy incontrollable operation of a material carrying tank, poor safety and product consistency and low repeatability due to the adoption of a crucible electric furnace as well as the defects of serious waste of a magnesium resource, high maintenance cost of equipment, overhigh reject ratio and the like by mechanically cutting and clamping magnesium ingots/magnesium alloy in the traditional particle magnesium/particle magnesium alloy production equipment using a fusion method, thereby solving the comprehensive problems of improved using cost and the like. The production line is suitable for producing molten iron preprocessing desulfurizing agent, molten steel deep-desulfurizing agent and cast iron mixed modifier in steel smelting as well as magnesium/magnesium alloy desulfurizing agent for producing Fe-Si-Mg and Fe-Si-Ca intermediate alloy in silicon iron fusion.
Description
Technical field
The present invention relates to a kind of production line of producing granule magnesium desulfurizer/particle magnesium alloy sweetening agent based on magnesium, magnesium alloy and waste material thereof.
Background technology
All generally use particle magnesium to make sweetening agent in the smelting technology flow process of existing smelting iron and steel enterprise, because in molten iron pretreatment desulfurizing technology, though the price of Mg is expensive in the granule magnesium desulfurizer, but because of its usage quantity few, hot metal temperature drop is few, the quantity of slag is few, iron loss is also few, the desulfurization degree height, its comprehensive cost is not high, it is short to add the processing cycle, to characteristics such as the converter of high rhythm are highly beneficial, produces steel quality and enlarges one of technical measures of producing the steel kind so particle magnesium Mg sweetening agent has been widely used for improving by each smelting iron and steel group.In addition, magnesium is low because of its density, specific tenacity and all high excellent properties of specific rigidity, now has been widely used in every field such as aerospace, automobile making, household electrical appliance, and the magnesium that can recycle and magnesium alloy waste material are also more and more; The easy oxidation of magnesium, burning, and exist difficulties such as processing, transportation, storage, be safe handling and the sweetening effectiveness that guarantees it, there are fire protection coating or film in particle magnesium top layer after the granulation, make it to be used alone, not only effectively reduced production cost, can also make magnesium be easier to be absorbed by molten iron, sweetening process is also carried out more steadily, desulfurization degree is higher.
Existing main mode of producing particle magnesium has following a few class:
One class is the mechanical pelleting mode.This type of granulation mode adopts mechanical cutting equipment; magnesium ingot is cut into magnesium chips, after the chip breaking of chip breaking machine, send into tablets press, in tablets press, grind and the acting in conjunction of high pressure draft through roller; magnesium chips is made globular particle magnesium, carry out surface treatment after the screening and pack again and dispatch from the factory.There is following shortcoming in this type of mode: 1. because the limitation of equipment, when cutting, the magnesium ingot retained part can not cut fully, and promptly all have an appointment 1/7 part of every magnesium ingot can not be cut, and causes the wasting of resources; 2. the particle magnesium size range after the granulation is difficult to control, and the ratio of off-specification material is too high; 3. all devices running speed all more than 2000r/min, causes the equipment failure rate height, the maintenance cost height.
One class is the melt pelletization mode.Its concrete production process is: generally adopt furnace equipment earlier with after magnesium ingot or the magnesium alloy thawing, again magnesium liquid or liquid magnesium alloy are mixed with saline solution and send into centrifugal granulation cup and carry out granulation, after sieving, pack and dispatch from the factory, the defective that this type of granulation mode exists is: 1. fusion is raw materials used is pure magnesium or pure magnesium alloy, magnesium purity must surpass 99.95%, this pure magnesium raw material market value costliness, production cost is higher; 2. use pure magnesium or pure magnesium alloy to make raw material, contain fluorochemical in its additive, be detrimental to health, environmental pollution is serious; 3. the particle magnesium or the particle magnesium alloy that make of atomizing, erose amounts of particles is higher, mobile poor in sweetening process, easily produce phenomenons such as stifled rifle, splash, and desulfurization degree is lower, and in addition, the bariumchloride in its esters additive belongs to toxic substance, be detrimental to health equally, environmental pollution is more serious; 4. adopt crucible furnace fusing magnesium ingot or magnesium alloy, power consumption is bigger, and energy consumption is big, the cost height; 5. the handover of magnesium liquid or liquid magnesium alloy adopts underflow type haul jar and open lifting to carry, and is dangerous big, and influences its temperature controlling; 6. the design of granulation cup is unreasonable, causes the mellow and full degree of magnesium granules or magnesium alloy particles low, and conditions of streaking is serious, and spicule is many; 7. the production process smoke discharge amount is big, and is big for environment pollution; 8. production process is manually controlled, and the homogeneity of product of production is poor, and is repeatable low.
Summary of the invention
At above-mentioned situation, the object of the present invention is to provide a kind of based on magnesium, magnesium alloy and waste material thereof are produced the production line of granule magnesium desulfurizer/particle magnesium alloy sweetening agent, it is simple in structure, compact, easy to operate, a complete set of equipment system input cost is low and select heat accumulating type Sweet natural gas refining furnace for use, the energy loss-rate is low, the discharging of whole process of production unharmful substance, supporting automatization control and operating system, work is good with production environment, the production efficiency height, quality product is excellent, and its finished surface is evenly closely knit, do not come off, the balling ratio height, nonhygroscopic, the sweetening process hot metal temperature drop is few, and the quantity of slag is few, the iron loss of skimming is few, non-environmental-pollution, convenient transportation and storage, range of application enlarges, and is convenient to penetration and promotion.
To achieve these goals, a kind of based on magnesium, magnesium alloy and waste material thereof are produced the production line of granule magnesium desulfurizer/particle magnesium alloy sweetening agent, it is mainly by raw material preheating and refining treatment system, granulation and injection treatment system, the vacuum siphon system, screening and finished product treatment system and automatization control and operating system composition, described raw material preheating and refining treatment system comprise and are arranged at the preheating oven of taking back in the place ahead, be arranged at the crucible dressing table that the place ahead takes over, be set in turn in feeder equipment and heat accumulating type Sweet natural gas refining furnace behind the crucible dressing table, described granulation and injection treatment system comprise the granulation chamber at the center of being arranged at, establish Fitz chilsonator in the granulation chamber, the salt stove is established in back, Fitz chilsonator top, holding furnace is established in Fitz chilsonator top left front side, holding furnace is connected with heat accumulating type Sweet natural gas refining furnace through moving liquid pump, the Fitz chilsonator periphery is established the annular scraper device, the injection material feeder is established in annular scraper device bottom, described vacuum siphon system is arranged at the Fitz chilsonator side between holding furnace and the salt stove, described screening and finished product treatment system comprise the work in-process feed bin that is arranged at that granulation chamber's rear side takes over and is connected through carrier pipe, again through 1. 54-F of discharge valve
1Connect sieve apparatus and sack cleaner, be arranged at finished product bin and finished product pocket and the screen overflow hopper and the screen underflow hopper of sieve apparatus bottom, described automatization control and operating system comprise a master control room, this master control room is arranged at below the preheating oven, supportingly in the master control room industrial control equipment, temperature control device, auxiliary control appliance, PLC and PC chamber, Weighing module, liquid level sensor is set and is connected each device systems and the pre-buried pipeline of industry control device and be arranged at master control room supervisory control desk on the spot outward.
For implementation structure and effect optimization, its further step is.
The work in-process feed bin is through pipe connection one dust settler.
Sieve apparatus is through the pipe connection sack cleaner.
Crucible dressing table, preheating oven, heat accumulating type Sweet natural gas refining furnace, holding furnace, salt stove, granulation chamber are all through the pipe connection flue gas cleaner.
Place, heat accumulating type Sweet natural gas refining furnace top is provided with driving.
PLC and PC chamber comprise supporting Computer Database and PLC controller.
1. heat accumulating type Sweet natural gas refining furnace comprises refining furnace, and refining furnace 2..
Auxiliary control appliance comprise the refining furnace gas valve 1., the refining furnace gas valve 2., the refining furnace pressure lock 1., the refining furnace pressure lock 2., discharge valve 1., discharge valve 2..
The material of screen underflow hopper returns the remelting of salt stove.
The material of screen overflow hopper returns the remelting of heat accumulating type Sweet natural gas refining furnace.
The present invention adopts mainly the technical scheme of being made up of raw material preheating and refining treatment system, granulation and injection treatment system, vacuum siphon system, screening and finished product treatment system and automatization control and operating system; It has overcome in existing particle magnesium/particle magnesium alloy production unit, in the scorification mode because of using crucible furnace, its energy consumption height, environmental pollution is serious, magnesium liquid/liquid magnesium alloy haul jar is operated out of control easily and danger and poor stability are occurred, and homogeneity of product is poor, and is repeatable low; And mechanical cutting clamping magnesium ingot, magnesium alloy ingot, its magnesium resource waste is serious, maintenance of equipment cost height, and the more high defective of the ratio of off-specification material, thus solved comprehensive difficult problems such as the use cost that causes granule magnesium desulfurizer/particle magnesium alloy sweetening agent increases; Produce the production of Fe-Si-Mg and Fe-Si-Mg-Ca master alloy in its suitable smelting iron and steel in the component of molten iron pretreatment desulfurizing and dark desulfurization of molten steel and cast iron combined degeneration agent and the fusion ferrosilicon with granule magnesium desulfurizer/particle magnesium alloy sweetening agent.
The beneficial effect that the present invention is produced compared to existing technology.
⑴ each system device of the present invention is simple in structure, connects compactness, with the supporting online use of production technique, realizes full process automatization control, and safe and reliable to operation, a complete set of equipment system input cost only is 75% of an existing installation input cost;
⑵ the refining furnace in the support equipment of the present invention is to select heat accumulating type Sweet natural gas refining furnace for use, and only this item has just reduced by 35% Energy Consumption Cost than the melt pelletization method that adopts electric furnace;
⑶ the present invention selects for use Sweet natural gas to make the fuel of refining furnace, the waste gas residual heat of its discharge is recovered to the preheating oven in raw material preheating and the refining treatment system, further reduced the energy consumption in producing, thereby reduced product cost, improved production environment, eliminate the discharging of pollutent, improved product market competitiveness;
⑷ be provided with in the production process of the present invention and move liquid pump, siphon device handover magnesium liquid, liquid magnesium alloy and saline solution, thoroughly eliminated the hidden danger of using underflow type haul jar to transfer magnesium liquid, liquid magnesium alloy and saline solution in the existing production process;
⑸ be provided with various environmental protection equipments such as sack cleaner, dust settler, flue gas cleaner in the online production process of the present invention, the obnoxious flavour and the dust that produce in producing have effectively been removed, work is good with production environment, has solved the pollution difficult problem of traditional mode of production process to environment;
⑹ granule magnesium desulfurizer/particle magnesium alloy sweetening agent product that the present invention produces, its chloride ion content is lower than 3.5%;
⑺ the present invention has used the higher Fitz chilsonator of the mellow and full degree of product, has improved finished product grade and output, and its 0.5-1.6mm grade finished product surpasses 95%, and elongated piece content is lower than 5% in the finished product, and the remarkable effect that promotes output of steel and quality is arranged;
⑻ the quantity of slag that product of the present invention produces in sweetening process is few, the iron loss of skimming is few;
⑼ hot metal temperature drop has only 5-10 ℃ product of the present invention sprays magnesium in sweetening process after, and the energy loss-rate is low;
⑽ product of the present invention magnesium unit consumption in sweetening process only is 15-20%;
⑾ contain 10% aluminium in the granule magnesium desulfurizer that the present invention makes/particle magnesium alloy sweetening agent finished product, can obviously improve desulfurization index 5-10%, add the flame-proof damp-proof performance of surperficial additive salt, can prevent effectively that atmospheric moisture from seeing through and the storage time of particle magnesium finished product above 6 months;
⑿ the granule magnesium desulfurizer that the present invention makes/particle magnesium alloy sweetening agent, its composition is formed simple, easily gets, and raw material resources is extensive, abundant, and magnesium utilization efficiency surpasses 90%,
⒀ the outer level of the grade that produces in the production process of the present invention magnesium granules/magnesium alloy particles quantity is few and can all reclaim remelting, the powerlessness waste;
⒁ adopted supporting automatization control and operating system in the production process of the present invention, production operation is simple and reliable, and labour intensity is low, realize full-automatic online production, production cost is low, the efficient height, output is big, and the consistence of product form is higher, and contamination-free produces;
⒂ the granule magnesium desulfurizer that the present invention makes/particle magnesium alloy sweetening agent, in being widely used in smelting iron and steel the dark desulfurization of molten iron pretreatment desulfurizing and molten steel, can also be effectively as producing Fe-Si-Mg and Fe-Si-Mg-Ca master alloy in the component of cast iron combined degeneration agent and the fusion ferrosilicon, commercial promise is wide.
Produce the production of Fe-Si-Mg and Fe-Si-Mg-Ca master alloy in the suitable smelting iron and steel of the present invention in the component of molten iron pretreatment desulfurizing and dark desulfurization of molten steel and cast iron combined degeneration agent and the fusion ferrosilicon with granule magnesium desulfurizer/particle magnesium alloy sweetening agent.
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
Description of drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is a Production Flow Chart sketch of the present invention.
Fig. 4 is temperature control device of the present invention and valve system control principle sketch.
Fig. 5 is the time variable control sketch in the automation control system of the present invention.
Fig. 6 is a main production general flow chart of the present invention.
Fig. 7 (table) is a comprehensive physicochemical property table of the present invention.
Fig. 8 (table) is the hot trial record table of the desulphurization and slag skimming of certain steel mill of the present invention.
Among the figure: 1, raw material preheating and refining treatment system, 11, preheating oven, 12, the crucible dressing table, 13, feeder equipment, 14, heat accumulating type Sweet natural gas refining furnace, 14-1, refining furnace 1., 14-2, refining furnace 2., 15, flue gas cleaner, 16, driving, 2, granulation and injection treatment system, 21, granulation chamber, 22, Fitz chilsonator, 23, the salt stove, 24, move liquid pump, 25, holding furnace, 26, the annular scraper device, 27, the injection material feeder, 3, the vacuum siphon system, 4, screening and finished product treatment system, 41, the work in-process feed bin, 42, sieve apparatus, 43, sack cleaner, 44, finished product bin, 45, the finished product pocket, 46, the screen underflow hopper, 47, the screen overflow hopper, 48, carrier pipe, 49, dust settler, 5, automatization control and operating system, 51, master control room, 52, industrial control equipment, 53, temperature control device, 54, auxiliary control appliance, 54-R
-- 1, the refining furnace gas valve 1., 54-R
2, the refining furnace gas valve 2., 54-K
1, the refining furnace pressure lock 1., 54-K
2, the refining furnace pressure lock 2., 54-F
1, discharge valve 1., 54-F
2, discharge valve 2., 55, PLC and PC chamber, 56, Weighing module, 57, liquid level sensor.
Embodiment
With reference to accompanying drawing, a kind of based on magnesium, magnesium alloy and waste material thereof are produced the production line of granule magnesium desulfurizer/particle magnesium alloy sweetening agent, it is mainly by raw material preheating and refining treatment system 1, granulation and injection treatment system 2, vacuum siphon system 3, screening and finished product treatment system 4 and automatization control and operating system 5 compositions, raw material preheating and refining treatment system 1 comprise and are arranged at the preheating oven 11 of taking back in the place ahead, be arranged at the crucible dressing table 12 that the place ahead takes over, be set in turn in feeder equipment 13 and heat accumulating type Sweet natural gas refining furnace 14 behind the crucible dressing table 12, granulation and injection treatment system 2 comprise the granulation chamber 21 at the center of being arranged at, establish Fitz chilsonator 22 in the granulation chamber 21, salt stove 23 is established in back, Fitz chilsonator 22 top, holding furnace 25 is established in Fitz chilsonator 22 top left front sides, holding furnace 25 is connected with heat accumulating type Sweet natural gas refining furnace 14 through moving liquid pump 24, Fitz chilsonator 22 peripheries are established annular scraper device 26, injection material feeder 27 is established in scraper plate device 26 bottoms, vacuum siphon system 3 is arranged at Fitz chilsonator 22 sides between holding furnace 25 and the salt stove 23, described screening and finished product treatment system 4 comprise the work in-process feed bin 41 that is arranged at that granulation chamber's 21 rear sides take over and is connected through carrier pipe 48, again through 1. 54-F of discharge valve
1 Connect sieve apparatus 42 and sack cleaner 43, be arranged at finished product bin 44 and finished product pocket 45 and the screen overflow hopper 47 and screen underflow hopper 46 of sieve apparatus 42 bottoms, automatization control and operating system 5 comprise a master control room 51, this master control room 51 is arranged at below the preheating oven 11, supportingly in the master control room 51 industrial control equipment 52, temperature control device 53, auxiliary control appliance 54, PLC and PC chamber 55, Weighing module 56, liquid level sensor 57 is set and is connected each device systems and the pre-buried pipeline of industry control device and be arranged at master control room 51 supervisory control desk on the spot outward.
In order effectively to remove obnoxious flavour and the dust that produces in the production, create good production environment and labor condition:
Work in-process feed bin 41 is through pipe connection one dust settler 49.
Crucible dressing table 12, preheating oven 11, heat accumulating type Sweet natural gas refining furnace 14, holding furnace 25, salt stove 23, granulation chamber 21 are all through pipe connection flue gas cleaner 15.
In order to guarantee the orderly function of online production completely:
Place, heat accumulating type Sweet natural gas refining furnace 14 tops is provided with driving 16, and this driving 16 provides service guarantee for full production line.
For improve production efficiency and product quality:
PLC and PC chamber 55 comprise supporting Computer Database and PLC controller.
Heat accumulating type Sweet natural gas refining furnace 14 comprises 1. 14-1 of refining furnace, and refining furnace is 14-2 2..
In order to save magnesium resource, outer level such as recycling magnesium grain is enhanced productivity;
The material of screen underflow hopper 46 returns 23 remeltings of salt stove.
The material of screen overflow hopper 47 returns 14 remeltings of heat accumulating type Sweet natural gas refining furnace.
The main production flow process that the present invention is based on the production line of magnesium, magnesium alloy and waste material production granule magnesium desulfurizer/particle magnesium alloy sweetening agent thereof is provided by accompanying drawing 6.
It mainly comprises raw material-preheating-fusing-refining-insulation-mixing, granulation-cooling, drying-screening-finished product-packing-product etc., and concrete operations are as follows:
1. require to choose regular magnesium, magnesium waste material or magnesium alloy, magnesium alloy waste material, magnesium ingot and additive salt in proportion and make raw material, standby;
2. magnesium, magnesium waste material or magnesium alloy, magnesium alloy waste material, magnesium ingot are dropped into preheating in the preheating oven 11, drying, standby; 3. require potassium chloride, sodium-chlor, magnesium chloride to drop in the salt stove 23 in proportion, fusing, insulation, standby;
4. the standby material of getting in the above-mentioned preheating oven 11 is delivered in the heat accumulating type Sweet natural gas refining furnace 14 through feeder equipment 13, and is standby;
5. add covering flux in the heat accumulating type Sweet natural gas refining furnace 14, fusing, refining heat up;
6. heat accumulating type Sweet natural gas refining furnace 14, salt stove 23 continue to heat up, and temperature control is incubated and makes liquid magnesium or liquid magnesium alloy, liquid salt;
7. step magnesium melt or magnesium alloy liquation 6. is delivered in the holding furnace 25 with moving liquid pump 24, salt melt is stored in the salt stove 23, insulation;
8. pipette 93 parts of above-mentioned magnesium melt or magnesium alloy liquations by the percentage of 93:7,7 parts of salt melts, two kinds of liquations are mixed by the batch mixing funnel and send into Fitz chilsonator 22 granulations in the granulation chamber 21 with the equipment in the vacuum siphon system 3, make the particle magnesium/particle magnesium alloy that is surrounded by salt deposit;
9. be surrounded by particle magnesium/particle magnesium alloy head-on airflow cooling, curing of direction of quilt in the dropping process at full speed in granulation chamber 21 of salt deposit, and after annular scraper device 26 is collected, deliver to injection material feeder 27 in granulation chamber 21 bottoms, the pressurized air of drying is delivered to work in-process feed bin 41 to sieve apparatus 42 with particle magnesium/particle magnesium alloy again;
10. particle magnesium/particle magnesium alloy is chewed from work in-process feed bin 41 longshore currents and is entered sieve apparatus 42, sieves the granule magnesium desulfurizer/particle magnesium alloy sweetening agent finished product that makes product on the sieve/screen overflow material, undersized product/undersize material and grade is arranged in sieve apparatus 42;
Shown in accompanying drawing, equipment of the present invention is laid and principle of work
⑴ equipment is laid and is connected and installed
A, laying are installed and connection raw material preheating and refining treatment system 1, comprise and be installed in the preheating oven 11 of taking back in the place ahead, be installed in the crucible dressing table 12 that the place ahead takes over, be installed in feeder equipment 13 and heat accumulating type Sweet natural gas refining furnace 14 behind the crucible dressing table 12, be installed in the driving 16 at place, heat accumulating type Sweet natural gas refining furnace 14 tops and be installed in outdoor flue gas cleaner 15; In order to enhance productivity, heat accumulating type Sweet natural gas refining furnace 14 comprises and is divided into 1. 14-1 of refining furnace that refining furnace is being connected and installed of 14-2 2.; In order to improve Working environment, two flue gas cleaners 15 are installed in outside the production line worker-house, and wherein one is connected with preheating oven 11, crucible dressing table 12, heat accumulating type Sweet natural gas refining furnace 14 through lubricating substance slot type pipeline; Another gas exhaust duct with holding furnace 25, salt stove 23, granulation chamber 21 is connected.
B, lay and install and connection granulation and injection treatment system 2, it comprises lays the granulation chamber 21 that is installed in the on-the-spot center of production line, the center of top of granulation chamber's 21 inwalls is installed centrifugal Fitz chilsonator 22, the center of top front left side of granulation chamber's 21 inwalls is installed holding furnace 25, salt stove 23 is installed in the center of top back of granulation chamber's 21 inwalls, holding furnace 25 is connected with the heat accumulating type Sweet natural gas refining furnace 14 of front through moving liquid pump 24, annular scraper device 26 is installed in Fitz chilsonator 22 bottoms, the bottom of this annular scraper device 26 and granulation chamber 21 isolates, only be connected with the injection material feeder 27 that is installed in granulation chamber 21 bottoms and is positioned at annular scraper device 26 bottoms by a circular hole, the other end of injection material feeder 27 links to each other with work in-process feed bin 41 with dust settler 49 by carrier pipe 48, and its connection is sealed connection.
C, laying are installed and connection vacuum siphon system 3, vacuum siphon system 3 is installed in Fitz chilsonator 22 sides between holding furnace 25 and the salt stove 23, and the pre-opened hole that the pipeline of vacuum siphon system 3 passes granulation chamber 21 tops is connected with holding furnace 25, salt stove 23 with Fitz chilsonator 22.
D, lay to install and connect screening and finished product treatment system 4, the work in-process feed bin 41 that is installed in that granulation chamber's 21 rear sides take over and connects through carrier pipe 48 is again through 1. 54-F of discharge valve
1 Connect sieve apparatus 42 and sack cleaner 43, finished product bin 44 and finished product pocket 45 and screen underflow hopper 46 and screen overflow hopper 47 are installed, connected in sieve apparatus 42 bottoms, sack cleaner 43 is installed in the side of sieve apparatus 42 and is tightly connected with sieve apparatus 42, the screen overflow stem bar of sieve apparatus 42 and screen underflow stem bar are all direct-connected with screen overflow hopper 47, screen underflow hopper 46 separately, and the material stem bar of finished product bin 44 is by 2. 54-R of discharge valve
2Direct-connected with finished product pocket 45, work in-process feed bin 41 is through pipe connection one dust settler 49, sieve apparatus 42 is through pipe connection sack cleaner 43, and work in-process feed bin 41, sieve apparatus 42, sack cleaner 43, finished product bin 44, finished product pocket 45 usefulness holding bolts are fixed on separately the platform; In order to save magnesium resource, outer level such as recycling magnesium grain is enhanced productivity; The material of screen underflow hopper 46 returns 23 remeltings of salt stove, and the material of screen overflow hopper 47 returns 14 remeltings of heat accumulating type Sweet natural gas refining furnace.
E, laying are installed and linking automation control and operating system 5, it comprises installation, connects the master control room 51 of monitoring industry control and temperature control treatment facility, this master control room 51 is installed in below the preheating oven 11, and supporting installations are for the industrial control equipment 52 of operation, monitoring usefulness, temperature control device 53, auxiliary control appliance 54, PLC and PC chamber 55, Weighing module 56, liquid level sensor 57 and be connected each device systems and the pre-buried pipeline of industry control device and need be installed on supervisory control desk on the spot outside the master control room 51 in the master control room 51; PLC and PC chamber 55 comprise the installation of supporting Computer Database and PLC controller; Auxiliary control appliance 54 comprises 1. 54-R of refining furnace gas valve
-- 1, 2. 54-R of refining furnace gas valve
-- 2, 1. 54-K of refining furnace pressure lock
1, 2. 54-K of refining furnace pressure lock
2, 1. 54-F of discharge valve
1, 2. 54-F of discharge valve
2Installation.
F, above-mentioned each treatment facility and industry control device are except that Fitz chilsonator 22 and drive a vehicle 16, all lay on the plane that is installed in granulation chamber's 21 top platforms, fix with holding bolt.
⑵ the technological process of production
In conjunction with Fig. 3 and Fig. 4, Fig. 5, Fig. 6, at first, the heating system that is matched in production line is carried high-temperature flue gas to preheating oven 11, raw materials such as placing magnesium, magnesium waste material or magnesium alloy in the preheating oven 11, magnesium alloy waste material, magnesium ingot is heated to 120 ℃, behind the raw material drying, flue gas is discharged by chimney after flue gas cleaner 15 purifies; Then, exsiccant magnesium, magnesium waste material or magnesium alloy, magnesium alloy waste material are sent into 1. 14-1 of refining furnace by feeder equipment 13, refining furnace 2. 14-2 melts, be installed in 1. 14-1 of refining furnace, refining furnace when 2. the liquid level switch on the 14-2 detects magnesium melt or magnesium alloy liquation upper limit feeder equipment 13 stop feeding, moving liquid pump 24 starts working, magnesium melt or magnesium alloy liquation are transported in the holding furnace 25, when the liquid level switch on the holding furnace 25 detects magnesium melt or magnesium alloy liquation upper limit, move liquid pump 24 and quit work, feeder equipment 13 is started working; Meanwhile, salt stove 23 begins to heat, and additive salt is made salt melt; When the Level Detection switch of holding furnace 25 and salt stove 23 detects upper limit simultaneously, vacuum siphon system 3 starts, magnesium melt or magnesium alloy liquation and salt melt are siphoned in the Fitz chilsonator 22 by the percentage of 93:7 by automatic regulating valve, when vacuum siphon system 3 starts, the gentle rotational system that adds of Fitz chilsonator 22 starts, the magnesium salts mixture that utilizes centrifugal principle will enter Fitz chilsonator 22 throws away from the cup hole of Fitz chilsonator 22, makes the particle magnesium/particle magnesium alloy that is surrounded by salt deposit; When a lower limit detector switch action was arranged in holding furnace 25 and the salt stove 23, Fitz chilsonator 22 stopped granulation; When the particle magnesium/particle magnesium alloy that is surrounded by salt deposit falls in granulation chamber 21 through the airflow cooling of its direction that heads on, solidify, enter at last in the annular scraper device 26, annular scraper device 26 is delivered in the injection material feeder 27 after particle magnesium/particle magnesium alloy is collected, and delivers to work in-process feed bin 41 by carrier pipe 48 under the effect of exsiccant pressurized air; When the weight of the Weighing module on the work in-process feed bin 41 56 reached set(ting)value, the discharge valve of work in-process feed bin 41 is 54-F 1.
1, the automatic unlatching, sieve apparatus 42 starts simultaneously, and particle magnesium/particle magnesium alloy enters sieve apparatus 42 by the flow of setting and carries out the sieve classification processing; When the weight of the Weighing module on the work in-process feed bin 41 56 reached higher limit, annular scraper device 26 and injection material feeder 27 quit work; When the weight of the Weighing module on the work in-process feed bin 41 56 reached lower value, annular scraper device 26 and injection material feeder 27 started simultaneously; Particle magnesium/particle magnesium alloy is chewed from work in-process feed bin 41 longshore currents and is entered sieve apparatus 42, making grade in sieve apparatus 42 screenings is 0.5-1.6mm particle magnesium products, the product that surpasses the 1.6mm grade returns 14 remeltings of heat accumulating type Sweet natural gas refining furnace through screen overflow hopper 47, the product that is lower than the 0.5mm grade returns 23 remeltings of salt stove through screen underflow hopper 46, when the Weighing module on the finished product feed bin 44 56 detected set(ting)value, the discharge valve below the finished product bin 44 is 54-F 2.
2Open, finished particle magnesium/particle magnesium alloy enters finished product pocket 45, and when the weight in the finished product pocket 45 reached 1T, discharge valve is 54-F 1.
1, discharge valve is 54-F 2.
2Automatically close pack once more behind the replacing finished product pocket 45; When the Weighing module on the finished product feed bin 44 56 detected higher limit, the discharge valve on the work in-process feed bin 41 is 54-F 1.
1, discharge valve is 54-F 2.
2Close simultaneously with sieve apparatus 42; When the Weighing module on the finished product feed bin 44 56 detected lower value, the discharge valve below the finished product bin 44 is 54-F 1.
1, discharge valve is 54-F 2.
2Close, stop pack.
1. 2. 14-1, refining furnace all reserve discharge opening in the bottom of 14-2 and holding furnace 25 at the refining furnace of heat accumulating type Sweet natural gas refining furnace 14, when accident perforation fault appearred in crucible, molten magnesium liquid or molten magnesium alloy liquid can enter in the accident treatment groove that presets from this accidental discharge mouth.
The refining furnace that crucible dressing table 12 is used to clear up heat accumulating type Sweet natural gas refining furnace 14 is the 2. residue in 14-2 and holding furnace 25 crucibles of 14-1, refining furnace 1., and this residue used vessel returns 14 remeltings of heat accumulating type Sweet natural gas refining furnace.
⑶ automatization control and operation
(A) infrastructure device of automatization control
1. siemens SIMATIC S7-400 programmable controller
2. siemens IPC547C industrial computer
3. siemens CP1613 Communication processor
4. siemens UPS uninterruptible power supply device
5. siemens ESM network switch switch
6. simulating signal and numerary signal input/output module
7. EPA
8. other utility appliance
(B) control and operation
Referring to accompanying drawing, in the production, operator enter in the master control room 51 in automatization control and the operating system 5, according to production process to each industrial control equipment 52, temperature control device 53, auxiliary control appliance 54, PLC and the PC chamber 55 of supporting setting, Weighing module 56, liquid level sensor 57 and on the spot supervisory control desk carry out the real-time control of corresponding link;
Referring to accompanying drawing 3,4, at preheating oven 11, holding furnace 25, mounting temperature sensor in the salt stove 23, when temperature reaches the higher limit of setting or lower value, simulating signal is transported to siemens SIMATIC S7-400 programmable controller by simulating signal and numerary signal input/output module, programmable controller by data relatively, send to each temperature control device 53 in the temperature control system with carrying out signal by simulating signal and numerary signal input/output module, temperature control device 53 is by the adjusting to the SCR control angle, adjust the output voltage of each temperature control device 53, finish the temperature regulation of each temperature control device 53;
Automatization control and operating system 5 utilizations comprise 1. 54-R of refining furnace gas valve
-- 1, 2. 54-R of refining furnace gas valve
-- 2, 1. 54-K of refining furnace pressure lock
1, 2. 54-K of refining furnace pressure lock
2, 1. 54-F of discharge valve
1, 2. 54-F of discharge valve
2On 54 pairs of various valves of auxiliary control appliance is to carry out Collaborative Control and operation; At 1. 14-1 of the refining furnace of heat accumulating type Sweet natural gas refining furnace 14, the refining furnace pressure lock that 2. refining furnace all is equipped with input air, combustion gas among the 14-2 is 54-K 1.
1, 2. 54-K of refining furnace pressure lock
2With 1. 54-R of refining furnace gas valve
-- 1, 2. 54-R of refining furnace gas valve
2Deng valve system, temperature control system is then made adjustment parameter by temperature sensor and is revised, and data are sent to each valve system execution;
Above heat accumulating type Sweet natural gas refining furnace 14, holding furnace 25, salt stove 23, liquid level sensor 57 is installed all, when the liquid level sensor 57 of the lower limit of heat accumulating type Sweet natural gas refining furnace 14 detects bottom limit level, the PC and the PLC acts may of operation PLC and PC chamber 55 start feeder equipment 13 to heat accumulating type Sweet natural gas refining furnace 14 transferring raw materials; When detecting upper limit liquid level, acts may stops feeder equipment 13 running, and starts liquid pump 24 work that move, simultaneously, refining furnace 1. 14-1, refining furnace 2. 14-2 take turns to operate; When the liquid level sensor 57 in holding furnace 25 and the salt stove 23 detects upper limit liquid level simultaneously, the PLC acts may starts vacuum siphon system 3, magnesium melt/magnesium alloy liquation and salt melt are injected Fitz chilsonator 22 according to a certain percentage, when arbitrary liquid level sensor 57 of holding furnace 25 and salt stove 23 detects lower limit, the PLC acts may stops the feeding work of vacuum siphon system 3, and refining furnace 1. 14-1, refining furnace 2. 14-2 condition when permission start move liquid pump 22 with magnesium melt/magnesium alloy liquation input holding furnace 25 or prompting to salt stove 23 with salt;
When starting vacuum siphon system 3, the PLC acts may starts Fitz chilsonator 22 heating and rotation, the heat-processed of Fitz chilsonator 22 is controlled by temperature sensor, the rotation of Fitz chilsonator 22 is by the frequency transformer adjustment, and simulated data is transported to the PLC acts may by analog-to-digital conversion module and carries out being sent to the PLC acts may again after the data processing and control adjustment;
After Fitz chilsonator 22 started, the PLC acts may started annular scraper device 26 and injection material feeder 27 by time-delay, collected and carry to make particle magnesium/particle magnesium alloy;
Weighing module 56 is installed in work in-process feed bin 41 and finished product bin 44; When the Weighing module 56 of work in-process feed bin 41 detected upper limit, if the condition of finished product bin 44 permission, the discharge valve that the PLC acts may will start work in-process feed bin 41 bottoms is 54-F 1.
1With sieve apparatus 42 and close injection material feeder 27; When detecting lower limit, the PLC acts may is closed 1. 54-F of discharge valve
1With sieve apparatus 42; When the Weighing module 56 of finished product feed bin 44 detected upper limit, the discharge valve that the PLC acts may is opened finished product bin 44 bottoms is 54-F 2.
2, with pack into finished product pocket 45 and close sieve apparatus 42 and 1. 54-F of discharge valve of finished product
1, when detecting lower limit, the PLC acts may is closed discharge valve
54-F
2And start sieve apparatus 42 and open 1. 54-F of discharge valve
1
Several positions at the existing field boundary of production line are equipped with smoke transducer, when wherein the detected value of the smoke transducer of arbitrary position reaches set(ting)value, siemens SIMATIC S7-400 programmable controller acts may will start corresponding environmental protection equipment and carry out the fume cleaning processing;
Near equipment such as heat accumulating type Sweet natural gas refining furnace 14, holding furnace 25, salt stove 23, sieve apparatus 42, be provided with supervisory control desk on the spot, be convenient in case of emergency emergency operation, and can be, the per pass operation is manually controlled adjustment with operation break-down by the conversion of switch to equipment;
The Computer Database and the PLC controller of utilization PLC and PC chamber 55 are monitored in real time to the service data of all devices, be sent to siemens IPC547C industrial computer by siemens CP1613 Communication processor through the RS485/RS232 interface, the Production Flow Chart state of each workshop section is shown on the display screen of siemens IPC547C industrial computer strictly according to the facts, and can realize producing online various data adjustment and modification by the operation of PC controls such as mouse and keyboard.
1. the task of process automation control and operating system 5 also comprises:
Personnel provide effective information to technological operation: the current value that comprises processing parameter and power supply parameter, the position and the intact situation thereof of device and shut-off valve, whether process parameter value over range, whether the reason that allows to finish the instruction of technological operation or point out quiescing is arranged, the information of stopping in emergency about equipment;
Assurance can be carried out effectively manually control promptly by Working Procedure Controlling to processing unit and shutoff-regulated valve device from the master station and the supervisory control desk on the spot outside PLC and PC chamber 55 and the master control room 51 of master control room 51;
According to the program of setting processing unit and shutoff-regulated valve device are implemented control automatically promptly from original state;
Processing parameter is remained on automatically on the level of setting;
Implement necessary technology interlocking.
2. the structure of production process automatization control and operating system 5 and PLC and PC chamber 55:
All necessary datas of production process process and equipment work all are input in the PLC programmable logic controller, at this information that obtains are handled, and implement necessary interlocking and calculating;
Require to regulate the electric installation such as Fitz chilsonator 22 motors of motor speed, adopt frequency transformer to control;
Communicating by letter between PLC and the active station Wincc is Ethernet by EPA, finishes by means of siemens ESM network switch switch, and information transmission speed is 10-100M bps;
Particle magnesium production result's necessary data is preserved the necessary time limit in operator's console siemens IPC547C industrial computer database.
3. the automatization control and the operating system 5 that mainly comprise industry control and temperature control treatment facility and other auxiliary control appliances
PC-operator's tablecloth of working is located in PLC and the PC chamber 55, is equipped with siemens IPC547C industrial computer and watch-dog and ink-jet printer;
The PLC-The whole control system comprises siemens SIMATIC S7-400 programmable controller in forming, and is installed in the cabinet of PLC and PC chamber 55;
Be the supporting components and parts of PLC;
CPU (central processing unit);
The power supply device;
Simulating signal and numerary signal input/output module;
The EPA communication processor:
Communicating by letter between PLC and the PC finished by EPA, and agreement is TCP/IP, and information transmission speed is 10/100 bps;
The power supply of automatization control and operating system 5 is finished by siemens UPS uninterruptible power supply device;
Frequency transformer
Frequency transformer is adopted in the control of Fitz chilsonator 22 motors, and frequency transformer can be protected not phase partially of motor, the phase failure, and not short circuit, not overheated;
Supervisory control desk on the spot
The other supervisory control desk on the spot of all installing of equipment such as industrial control equipment 52, temperature control device 53 and auxiliary control appliance 54, according to the production scene situation realize in good time, online field control accurately and rapidly;
Fitz chilsonator 22 is setting operation dish on the supervisory control desk on the spot, finishes control to Fitz chilsonator 22 rotating speeds by this operation board, realizes to granulating equipment processing parameter such as temperature the supervision of the open and close state of pressure and equipment etc.;
From other on the spot the control carried out of supervisory control desk carry out by means of transfer lever and button, the MMI picture has the equipment state image, on the controlling board signal lamp is arranged on the spot.
⑷ granule magnesium desulfurizer/particle magnesium alloy sweetening agent The comprehensive performance that the present invention produces can be referring to Fig. 7 (table), Fig. 8 (table).
Granule magnesium desulfurizer or the particle magnesium alloy sweetening agent prepared by production line of the present invention, its comprehensive physicochemical property is provided by embodiment 1-12 corresponding among Fig. 7 (table), by Fig. 7 (table) as can be seen, the MAGNESIUM METAL of products obtained therefrom or magnesium alloy content reach as high as 93.54%, and chloride ion content is no more than 2.33%, 0.5-1.6mm the finished product between the granularity reaches as high as 98%, loose density can be controlled at 1.0-1.02g/cm fully
3Between; The hot trial record of its desulphurization and slag skimming in steel mill provides wherein 9 batches by Fig. 8 (table).As can be seen from the table, this product temperature in sweetening process reduces very little, average temperature drop has only 7.22 ℃ in the once desulfurization process, the loss of molten iron also seldom, molten iron average loss 0.59kg per ton in the once desulfurization process, and the amount of molten steel consumption magnesium desulfurizer per ton on average has only 0.29kg, desulfurization degree on average can reach 93.29%, the low-cost effect of this sweetening agent in sweetening process is significant, and commercial promise is considerable, is worth penetration and promotion.
Claims (10)
1. one kind based on magnesium, magnesium alloy and waste material thereof are produced the production line of granule magnesium desulfurizer/particle magnesium alloy sweetening agent, it is characterized in that it is mainly by raw material preheating and refining treatment system (1), granulation and injection treatment system (2), vacuum siphon system (3), screening and finished product treatment system (4) and automatization control and operating system (5) composition, described raw material preheating and refining treatment system (1) comprise the preheating oven (11) that is arranged at the place ahead and takes back, be arranged at the crucible dressing table (12) that the place ahead takes over, be set in turn in feeder equipment (13) and heat accumulating type Sweet natural gas refining furnace (14) behind the preheating oven (11), described granulation and injection treatment system (2) comprise the granulation chamber (21) at the center of being arranged at, establish Fitz chilsonator (22) in the granulation chamber (21), salt stove (23) is established in Fitz chilsonator (22) back, top, holding furnace (25) is established in Fitz chilsonator (22) top left front side, holding furnace (25) is connected with heat accumulating type Sweet natural gas refining furnace (14) through moving liquid pump (24), Fitz chilsonator (22) periphery is established annular scraper device (26), injection material feeder (27) is established in annular scraper device (26) bottom, described vacuum siphon system (3) is arranged at Fitz chilsonator (22) side between holding furnace (25) and the salt stove (23), described screening and finished product treatment system (4) comprise the work in-process feed bin (41) that is arranged at that granulation chamber (21) rear side takes over and is connected through carrier pipe (48), again through 1. 54-F of discharge valve
1Connect sieve apparatus (42) and sack cleaner (43), be arranged at finished product bin (44) and finished product pocket (45) and the screen overflow hopper (47) and screen underflow hopper (46) of sieve apparatus (42) bottom, described automatization control and operating system (5) comprise a master control room (51), this master control room (51) is arranged at below the preheating oven (11), the supporting industrial control equipment (52) that is provided with in the master control room (51), temperature control device (53), auxiliary control appliance (54), PLC and PC chamber (55), Weighing module (56), liquid level sensor (57) and connect each device systems and the pre-buried pipeline of industry control device and be arranged at the outer supervisory control desk on the spot of master control room (51).
2. the production line based on magnesium, magnesium alloy and waste material production granule magnesium desulfurizer/particle magnesium alloy sweetening agent thereof according to claim 1 is characterized in that work in-process feed bin (41) is through pipe connection one dust settler (49).
3. the production line based on magnesium, magnesium alloy and waste material production granule magnesium desulfurizer/particle magnesium alloy sweetening agent thereof according to claim 1 is characterized in that sieve apparatus (42) is through pipe connection sack cleaner (43).
4. the production line based on magnesium, magnesium alloy and waste material production granule magnesium desulfurizer/particle magnesium alloy sweetening agent thereof according to claim 1 is characterized in that crucible dressing table (12), preheating oven (11), heat accumulating type Sweet natural gas refining furnace (14), holding furnace (25), salt stove (23), granulation chamber (21) are all through pipe connection flue gas cleaner (15).
5. the production line based on magnesium, magnesium alloy and waste material production granule magnesium desulfurizer/particle magnesium alloy sweetening agent thereof according to claim 1 is characterized in that place, heat accumulating type Sweet natural gas refining furnace (14) top is provided with driving (16).
6. the production line based on magnesium, magnesium alloy and waste material production granule magnesium desulfurizer/particle magnesium alloy sweetening agent thereof according to claim 1 is characterized in that PLC and PC chamber (55) comprise supporting Computer Database and PLC controller.
7. the production line based on magnesium, magnesium alloy and waste material production granule magnesium desulfurizer/particle magnesium alloy sweetening agent thereof according to claim 1 is characterized in that heat accumulating type Sweet natural gas refining furnace (14) comprises refining furnace 1. (14-1), and refining furnace is (14-2) 2..
8. the production line based on magnesium, magnesium alloy and waste material production granule magnesium desulfurizer/particle magnesium alloy sweetening agent thereof according to claim 1 is characterized in that auxiliary control appliance (54) comprises 1. (54-R of refining furnace gas valve
-- 1), 2. (54-R of refining furnace gas valve
-- 2), 1. (54-K of refining furnace pressure lock
1), 2. (54-K of refining furnace pressure lock
2), 1. (54-F of discharge valve
1), 2. (54-F of discharge valve
2).
9. the production line based on magnesium, magnesium alloy and waste material production granule magnesium desulfurizer/particle magnesium alloy sweetening agent thereof according to claim 1 is characterized in that the material of screen underflow hopper (46) returns salt stove (23) remelting.
10. the production line based on magnesium, magnesium alloy and waste material production granule magnesium desulfurizer/particle magnesium alloy sweetening agent thereof according to claim 1 is characterized in that the material of screen overflow hopper (47) returns heat accumulating type Sweet natural gas refining furnace (14) remelting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105618587A CN101974665B (en) | 2010-11-29 | 2010-11-29 | Magnesium, magnesium alloy and wastes thereof based production line for producing particle magnesium desulfurizing agent/particle magnesium alloy desulfurizing agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105618587A CN101974665B (en) | 2010-11-29 | 2010-11-29 | Magnesium, magnesium alloy and wastes thereof based production line for producing particle magnesium desulfurizing agent/particle magnesium alloy desulfurizing agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101974665A true CN101974665A (en) | 2011-02-16 |
| CN101974665B CN101974665B (en) | 2012-07-04 |
Family
ID=43574573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105618587A Expired - Fee Related CN101974665B (en) | 2010-11-29 | 2010-11-29 | Magnesium, magnesium alloy and wastes thereof based production line for producing particle magnesium desulfurizing agent/particle magnesium alloy desulfurizing agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101974665B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102436232A (en) * | 2011-10-18 | 2012-05-02 | 中国石油化工股份有限公司 | Equipment maintaining system for factories for purifying natural gas with high content of sulfur |
| CN103048975A (en) * | 2012-12-28 | 2013-04-17 | 中国工程物理研究院化工材料研究所 | Automated control system of granulation production line |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1491763A (en) * | 2002-10-24 | 2004-04-28 | 孙爱全 | Magnesium and magnesium alloy pelletizing method |
-
2010
- 2010-11-29 CN CN2010105618587A patent/CN101974665B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1491763A (en) * | 2002-10-24 | 2004-04-28 | 孙爱全 | Magnesium and magnesium alloy pelletizing method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102436232A (en) * | 2011-10-18 | 2012-05-02 | 中国石油化工股份有限公司 | Equipment maintaining system for factories for purifying natural gas with high content of sulfur |
| CN102436232B (en) * | 2011-10-18 | 2013-08-14 | 中国石油化工股份有限公司 | Equipment maintaining system for factories for purifying natural gas with high content of sulfur |
| CN103048975A (en) * | 2012-12-28 | 2013-04-17 | 中国工程物理研究院化工材料研究所 | Automated control system of granulation production line |
| CN103048975B (en) * | 2012-12-28 | 2016-01-20 | 中国工程物理研究院化工材料研究所 | Pelletizing production line automation control system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101974665B (en) | 2012-07-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101537522B (en) | Method and device for disassembling electronic components from waste printed circuit boards and recovering soldering tin | |
| CN100420527C (en) | Production equipment of high-purity superfine active zinc powder and method for preparing same | |
| CN101074457B (en) | Method for smelting and separating refuse-combustion fly-ash heavy metal | |
| CN108823412B (en) | Processing and production process of secondary aluminum | |
| CN104512988A (en) | Method for treating heavy metal sludge by using stainless steel molten slag | |
| CN110560448B (en) | Intelligent harmless treatment and resource recycling process for waste metal packaging container | |
| WO2018103713A1 (en) | Control system and method for regenerative smelting using crushed silicon from silicon factory | |
| CN108224433A (en) | The innoxious use processing system and processing method of a kind of electronic waste | |
| CN101974665B (en) | Magnesium, magnesium alloy and wastes thereof based production line for producing particle magnesium desulfurizing agent/particle magnesium alloy desulfurizing agent | |
| CA2407975C (en) | A method and an apparatus for recovery of metals | |
| CN108300864B (en) | A kind of energy-saving hair lead refining process | |
| CN105353606A (en) | Fly ash stabilization automatic control method and system | |
| CN214830581U (en) | Electric furnace method crude zinc recovery system of zinc-containing smoke dust of steel plant | |
| JP2005131610A (en) | Used toner cartridge treatment method and treatment plant | |
| CN102031336B (en) | Particle magnesium desulfurizer/particle magnesium alloy desulfurizer based on magnesium, magnesium alloy and waste materials thereof and preparation method | |
| CN208011721U (en) | A kind of innoxious use processing system of electronic waste | |
| CN108787695A (en) | A method of stereotype grid and plastics in the broken rear lead-acid accumulator of separation | |
| CN211386274U (en) | Hazardous waste recycling comprehensive treatment system adopting converter | |
| CN203371024U (en) | Lead melting system for feeding materials to battery plate casting machine | |
| CN206692338U (en) | A kind of control system for using the broken silicon of silicon factory regenerate melting | |
| CN111139371A (en) | Preparation method and equipment of green low-cost regenerated aluminum alloy | |
| CN103173632A (en) | Welding slag separating and recycling device | |
| CN202499891U (en) | Welding slag separation and recovery device | |
| CN217570122U (en) | Useless processing system of danger | |
| CN213803926U (en) | Granulating system for oxygen-enriched smelting soot |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20120704 Termination date: 20211129 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |