CN105986163A - Nitrided ferrovanadium production method and apparatus - Google Patents
Nitrided ferrovanadium production method and apparatus Download PDFInfo
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- CN105986163A CN105986163A CN201510051057.9A CN201510051057A CN105986163A CN 105986163 A CN105986163 A CN 105986163A CN 201510051057 A CN201510051057 A CN 201510051057A CN 105986163 A CN105986163 A CN 105986163A
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Abstract
The invention discloses a nitrided ferrovanadium production method and apparatus. According to the method, a tubular kiln or rotary kiln is used for producing nitrided ferrovanadium. The apparatus comprises a pulverizer which is successively connected with a mixer, a hydraulic ball press machine and a graphite crucible in sequence, wherein the graphite crucible is connected with a push-board-type drying kiln through a feeder, the graphite crucible is sent into the push-board-type drying kiln by the feeder, and the push-board-type drying kiln is connected with a push-board-type kiln. The method and apparatus provided by the invention have the advantages of reduction in impurity content of ferrovanadium, improvement of product quality, reduction in production cost, high utilization rate of equipment, energy conservation, environment friendliness, high efficiency, capacity of realizing continuous production and suitability for large-scale industrial production.
Description
Technical field
The present invention relates to a kind of ferrovanadium nitride production Technology and method and production equipment, specifically a kind of ferrovanadium nitride production system, it is adaptable to the production of 50 or 80 ferrovanadium nitrides, belong to ferrovanadium nitride production field.
Background technology
Ferrovanadium nitride is a kind of novel VN alloy additive, the response rate of ferrovanadium nitride is up to more than 95%, the product made from steel performance adding ferrovanadium nitride is better than vanadium iron and vanadium nitride, average specific VN alloy absorbance high 3%～5%, product made from steel is made to have performance more stable, higher crystal grain thinning and effectively promote the functions such as intensity, toughness, ductility.But, use and add current vanadium iron or vanadium-nitrogen alloy product so that it is higher that the impurity in iron and steel compares content, thus reduces product made from steel quality, improves the product cost of steel.
Summary of the invention
In order to solve the problems referred to above, the present invention devises a kind of ferrovanadium nitride production method and equipment thereof, the ferrovanadium nitride product of output can reduce the impurity content in steel products, improve product made from steel quality, reducing steel product cost, utilization rate of equipment and installations is high, energy-saving and environmental protection, efficiently, can produce continuously, be suitable for large-scale industrial production.
The technical scheme is that
A kind of ferrovanadium nitride production method, comprises the following steps:
(1) finished product 50 or 80 vanadium iron is crushed to 3～8mm graininess, adds in blender, be stirred mixing to 30min by the proportioning that vanadium iron graphite weight ratio is 1 0.10；
(2) adding 3% waterglass of gross weight, 5% poly (vinyl alcohol) binder, 5.5% water again in the blender of step (1), uniform stirring, by material input hydraulic pressure ball press after stirring；
(3) utilize 10MPa hydraulic pressure ball press to be pressed into 35 × 35mm oval-shaped ball, load graphite crucible, feeder send in push-plate type drying kiln；
(4) drying kiln is heated to 200-300 DEG C and carries out 180min drying, it is divided into 0.10-0.15% to material is aqueous, it is then fed in pushed bat kiln, initial temperature is set as 500 DEG C in pushed bat kiln, in kiln, nitrogen pressure is+15～30MPa, now, and the burner at gas discharge outlet that carbon monoxide and other waste gas are arranged by kiln body upper port, after under the effect of air, CO burning completes, discharged from exhaustor by exhaust blower；Waste gas for making ferrovanadium nitride discharge in course of reaction can be discharged smoothly, equipped with adjustable speed exhaust blower at exhaustor.In guarantee kiln in the case of malleation, reaction is passed through about flow 2.5m3/min nitrogen per minute at the very start.Now, material starts carburizing reagent, and the carburizing reagent time is 120min, subsequently temperature is gradually increased to 1450 DEG C, makes material gradually carry out nitridation reaction, and the nitridation reaction time is 180min, then treats that material is cooled to less than 80 DEG C kiln discharges.
A kind of ferrovanadium nitride production system, including pulverizer, described pulverizer is connected with blender, hydraulic pressure ball press and graphite crucible successively, described graphite crucible is connected with push-plate type drying kiln by feeder, graphite crucible is sent in push-plate type drying kiln by feeder, and described push-plate type drying kiln is connected with pushed bat kiln.
Further, described pulverizer is 50 or 80 vanadium iron pulverizers, and grinding particle size is 3～8mm.
Further, the heating-up temperature of described push-plate type drying kiln is 200-300 DEG C.
Further, the interior initial temperature that sets of described pushed bat kiln is as 500 DEG C, and in kiln, nitrogen pressure is 15～30MPa.
Further, being passed through flow per minute in described pushed bat kiln is 2.5m3The nitrogen of/min.
Further, the kiln body upper port of described pushed bat kiln is provided with gas discharge outlet, is provided with burner at described gas discharge outlet, and for carbon monoxide and the abundant burning of basic anhydride, under the effect of air, CO burning is complete.
Further, described gas discharge outlet is connected with exhaustor by exhaust blower, and the fully gas after burning is discharged by exhaustor.
Further, described hydraulic pressure ball press is 10MPa hydraulic pressure ball press.
The present invention uses pushed bat kiln to produce ferrovanadium nitride, controls, into kiln inventory, kiln speed, sintering temperature curve, nitrogen flow, nitrogen pressure, roasting time, to produce high-quality ferrovanadium nitride through accurately.
Use the ferrovanadium nitride product that the present invention produces, the impurity during vanadium alloying can be reduced further, due to more than 10% nitrogen element synthesize after even into vanadium iron, impurity in vanadium iron is reduced accordingly, therefore, the nitridation process of vanadium iron is again once refine purification process to vanadium iron, thus adds and can further improve the performance of steel to steel and reduce the product cost of steel.
The ferrovanadium nitride consistency produced is high, up to 5.2g/cm3Above, density is more than VN alloy, and vanadium content is up to 50～80 ± 2%, and nitrogen content is up to 12 ± 1.5%, and product degree of purity is good, capability and performance is stable, absorbance is high, remarkable in economical benefits.
It is an advantage of the current invention that: the impurity content reducing in vanadium iron, improve product quality, reduce the product cost of steel, utilization rate of equipment and installations is high, energy-saving and environmental protection, efficiently, can produce continuously, be suitable for large-scale industrial production.
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention.
Detailed description of the invention
Hereinafter the preferred embodiments of the present invention are illustrated, it will be appreciated that preferred embodiment described herein is merely to illustrate and explains the present invention, is not intended to limit the present invention.
Embodiment 1
A kind of ferrovanadium nitride production method, comprises the following steps:
(1) finished product 50 or 80 vanadium iron is crushed to 3～8mm graininess, adds in blender, be stirred mixing to 30min by the proportioning that vanadium iron graphite weight ratio is 1 0.10；
(2) adding 3% waterglass of gross weight, 5% poly (vinyl alcohol) binder, 5.5% water again in the blender of step (1), uniform stirring, by material input hydraulic pressure ball press after stirring；
(3) utilize 10MPa hydraulic pressure ball press to be pressed into 35 × 35mm oval-shaped ball, load graphite crucible, feeder send in push-plate type drying kiln；
(4) drying kiln is heated to 200-300 DEG C and carries out 180min drying, it is divided into about 0.12% to material is aqueous, it is then fed in pushed bat kiln, initial temperature is set as 500 DEG C in pushed bat kiln, in kiln, nitrogen pressure is+15～30MPa, now, and the burner at gas discharge outlet that carbon monoxide and other waste gas are arranged by kiln body upper port, after under the effect of air, CO burning completes, discharged from exhaustor by exhaust blower；Waste gas for making ferrovanadium nitride discharge in course of reaction can be discharged smoothly, equipped with adjustable speed exhaust blower at exhaustor.In guarantee kiln in the case of malleation, reaction is passed through about flow 2.5m3/min nitrogen per minute at the very start.Now, material starts carburizing reagent, and the carburizing reagent time is 120min, subsequently temperature is gradually increased to 1450 DEG C, makes material gradually carry out nitridation reaction, and the nitridation reaction time is 180min, then treats that material is cooled to less than 80 DEG C kiln discharges.
Embodiment 2
As shown in Figure 1, a kind of ferrovanadium nitride production system, including pulverizer 1, described pulverizer 1 is connected with blender 2, hydraulic pressure ball press 3 and graphite crucible 4 successively, described graphite crucible 4 is connected with push-plate type drying kiln 6 by feeder 5, graphite crucible is sent in push-plate type drying kiln by feeder, and described push-plate type drying kiln 6 is connected with pushed bat kiln 7.
Described pulverizer 1 is 50 or 80 vanadium iron pulverizers, and grinding particle size is 3～8mm；Described blender 2 is agitator tank；The heating-up temperature of described push-plate type drying kiln 6 is 200-300 DEG C；The interior initial temperature that sets of described pushed bat kiln 7 is as 500 DEG C, and in kiln, nitrogen pressure is 15～30MPa；Being passed through flow per minute in described pushed bat kiln 7 is 2.5m3The nitrogen of/min；The kiln body upper port of described pushed bat kiln 7 is provided with gas discharge outlet 8, it is provided with burner 9 at described gas discharge outlet 8, for carbon monoxide and the abundant burning of basic anhydride, under the effect of air, CO burning is complete, described gas discharge outlet is connected with exhaustor by exhaust blower, and the fully gas after burning is discharged by exhaustor.
During work, first finished product 50 or 80 vanadium iron is crushed to 3～8mm graininess, join in blender, it is stirred mixing to 30min by the proportioning that vanadium iron graphite weight ratio is 1 0～0.1, the waterglass of mass fraction 3%, the poly (vinyl alcohol) binder of 5%, the water uniform stirring 30min of 5.5% it is added into again in blender, by material input hydraulic pressure ball press after stirring, 10MPa hydraulic pressure ball press is utilized to be pressed into 35 × 35mm oval-shaped ball, load graphite crucible, feeder send in push-plate type drying kiln；Push-plate type drying kiln is heated to 200-300 DEG C carry out 180min dry be divided into about 0.12% to material is aqueous, it is then fed in pushed bat kiln, initial temperature is set as 500 DEG C in pushed bat kiln, in kiln, nitrogen pressure is+15～30MPa, now, the burner at gas discharge outlet that carbon monoxide and other waste gas are arranged by kiln body upper port, after under the effect of air, CO burning completes, is discharged from exhaustor by exhaust blower；Waste gas gas for making ferrovanadium nitride discharge in course of reaction can be discharged smoothly, and in guarantee kiln in the case of malleation, reaction is passed through about flow 2.5m per minute at the very start3The nitrogen of/min content 99.999%.Now, material starts carburizing reagent, and the carburizing reagent time is 120min, subsequently temperature is gradually increased to 1450 DEG C, makes material gradually carry out nitridation reaction, and the nitridation reaction time is 180min, then treats that material is cooled to less than 80 DEG C kiln discharges.
It addition, the said equipment belongs to prior art, therefore seldom state.
Claims (9)
1. a ferrovanadium nitride production method, it is characterised in that comprise the following steps:
(1) finished product 50 or 80 vanadium iron is crushed to 3～8mm graininess, adds in blender, be stirred mixing to 30min by the proportioning that vanadium iron graphite weight ratio is 1 0.10；
(2) adding 3% waterglass of gross weight, 5% poly (vinyl alcohol) binder, 5.5% water again in the blender of step (1), uniform stirring, by material input hydraulic pressure ball press after stirring；
(3) utilize 10MPa hydraulic pressure ball press to be pressed into 35 × 35mm oval-shaped ball, load graphite crucible, feeder send in push-plate type drying kiln；
(4) drying kiln is heated to 200-300 DEG C and carries out 180min drying, it is divided into 0.10-0.15% to material is aqueous, is then fed in pushed bat kiln, in pushed bat kiln, set initial temperature as 500 DEG C, in kiln, nitrogen pressure is+15～30MPa, and is passed through about flow 2.5m per minute3/ min nitrogen, carries out carburizing reagent, and the carburizing reagent time is 120min, subsequently temperature is gradually increased to 1450 DEG C, makes material gradually carry out nitridation reaction, and the nitridation reaction time is 180min, then treats that material is cooled to less than 80 DEG C, gets final product kiln discharge.
2. the equipment for ferrovanadium nitride production method as claimed in claim 1, it is characterized in that: include pulverizer, described pulverizer is connected with blender, hydraulic pressure ball press and graphite crucible successively, described graphite crucible is connected with push-plate type drying kiln by feeder, graphite crucible is sent in push-plate type drying kiln by feeder, and described push-plate type drying kiln is connected with pushed bat kiln.
A kind of ferrovanadium nitride production system the most according to claim 2, it is characterised in that: described pulverizer is 50 or 80 vanadium iron pulverizers, and grinding particle size is 3～8mm.
A kind of ferrovanadium nitride production system the most according to claim 2, it is characterised in that: the heating-up temperature of described push-plate type drying kiln is 200-300 DEG C.
A kind of ferrovanadium nitride production system the most according to claim 2, it is characterised in that: being passed through flow per minute in described pushed bat kiln is 2.5m3The nitrogen of/min.
A kind of ferrovanadium nitride production system the most according to claim 5, it is characterised in that: the interior initial temperature that sets of described pushed bat kiln is as 500 DEG C, and nitrogen pressure is 15～30MPa.
A kind of ferrovanadium nitride production system the most according to claim 6, it is characterised in that: the kiln body upper port of described pushed bat kiln is provided with gas discharge outlet, is provided with burner at described gas discharge outlet.
A kind of ferrovanadium nitride production system the most according to claim 7, it is characterised in that: described gas discharge outlet is connected with exhaustor by exhaust blower, and the fully gas after burning is discharged by exhaustor.
A kind of ferrovanadium nitride production system the most according to claim 2, it is characterised in that: described hydraulic pressure ball press is 10MPa hydraulic pressure ball press.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106399785A (en) * | 2016-11-25 | 2017-02-15 | 南通汉瑞新材料科技有限公司 | Method for preparing vanadium-nitrogen alloy by utilizing vanadium trioxide |
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| CN1847432A (en) * | 2005-04-12 | 2006-10-18 | 陈东红 | Sintered ferrovanadium alloy and its prepn process |
| CN102534219A (en) * | 2012-02-22 | 2012-07-04 | 浙江欣万飞科技有限公司 | Preparation method of vanadium nitride iron alloys for preventing bonding after alloy sintering |
| CN104018056A (en) * | 2014-05-15 | 2014-09-03 | 福建新航凯材料科技有限公司 | Preparation method of nitrided ferrovanadium with high quality and low cost |
| CN204529941U (en) * | 2015-01-16 | 2015-08-05 | 新疆众豪钒业科技有限公司 | A kind of ferrovanadium nitride production system |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1847432A (en) * | 2005-04-12 | 2006-10-18 | 陈东红 | Sintered ferrovanadium alloy and its prepn process |
| CN102534219A (en) * | 2012-02-22 | 2012-07-04 | 浙江欣万飞科技有限公司 | Preparation method of vanadium nitride iron alloys for preventing bonding after alloy sintering |
| CN104018056A (en) * | 2014-05-15 | 2014-09-03 | 福建新航凯材料科技有限公司 | Preparation method of nitrided ferrovanadium with high quality and low cost |
| CN204529941U (en) * | 2015-01-16 | 2015-08-05 | 新疆众豪钒业科技有限公司 | A kind of ferrovanadium nitride production system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106399785A (en) * | 2016-11-25 | 2017-02-15 | 南通汉瑞新材料科技有限公司 | Method for preparing vanadium-nitrogen alloy by utilizing vanadium trioxide |
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Application publication date: 20161005 |