Basic Data Sheet
1. Specifications for Vanadium Pentoxide
The vanadium pentoxide 98% flake form which is widely used in ferrovanadium manufacture industry and the annual consumption is very high in the world. We are especially good at vanadium pentoxide 98% flake form and high purity of vanadium products such as vanadium pentoxide 99%, 99.5%, 99.9%.99.99%,etc.
Product specifications as following:
A1.1 Vanadium Pentoxide 98%, fused flake
V2O5 98%min
Si 0.25%max
P 0.05%max
Fe 0.30%max
S 0.03%max
As 0.02% max
Na2O+K2O 1.50% max
A1.2 Vanadium Pentoxide 98%, powder type
V2O5 98%min
Si 0.25%max
P 0.05%max
Fe 0.40%max
S 0.03%max
As 0.02% max
Na2O+K2O 1.50% max
A2.Vanadium Pentoxide 99%, powder type
Si 0.10% max
P 0.03%max
Fe 0.20%max
S 0.01%max
As 0.01% max
Cl 0.10% max
Na2O+K2O 0.7% max
A3.Vanadium Pentoxide 99.5%, powder type
Si 0.05% max
P 0.01%max
Fe 0.02%max
S 0.01%max
As 0.01% max
Cl 0.01% max
Na2O+K2O 0.30% max
A4. Vanadium Pentoxide 99.9% , powder type ,
Si 0.01% max
P 0.005%max
Fe 0.005%max
S 0.005%max
As 0.005% max
Cl 0.005% max
Na2O+K2O 0.05% max
Packing : Powder in 50Kg iron drums lined with plastic bags
Flake in 250Kg iron drums
Meanwhile,we are also producing Ammonium Metavanadate,now we will supply you the detailed specification of it underbelow:
A5,Ammonium Metavanadate
NH4VO3 Si Fe S AL CL As Na2O+K2
98% 0.2 0.3 0.04 0.1 0.2 0.01 0.3
99% 0.10 0.10 0.03 0.05 0.15 0.01 0.2
Packing : in 25kg or 50 kg steel drum, 16 metric tons in a 20ft FCL.
2. Specifications for Ammonium Metadavanate
|
Type |
Chemical composite % |
Status | |||||||
|
NH4VO3 |
Si |
Fe |
S |
A1 |
C1 |
As |
Na2O+K2O | ||
|
min |
amx | ||||||||
|
Grade I |
98 |
0.2 |
0.3 |
0.04 |
0.1 |
0.2 |
0.01 |
0.3 |
White powder |
|
Grade II |
99 |
0.10 |
0.10 |
0.03 |
0.05 |
0.15 |
0.01 |
0.20 | |
Best regards
Sanjay Narayan
Mobile : +91 9960861928
Email : assignindia@gmail.com
Shaanxi Shengda Mining Co., Ltd
Add: Rm710, Gaoke Plaza, Gaoxin 4th Road, West Hi-Tech Industrial Zone, Xi'an China
1.Item: Vanadium Pentoxide
Molecular Formula: V205
Molecular Weight: 181.88
Description: Orange powder, relative density: 3.357. Brown flake, melting point: 690 . It decomposes at 1750 . It dissolves in acid, alkali and faintly in water. It can't dissolve in ethanol. Its vapor is poisonous.
The Ferro vanadium is widely used and required on the steel market, the mainly target market is FeV50 and FeV80, so I suggest you may contact the FeV customers and the steel manufacture factory. In this field,s ome ferro alloy company should be the potential customers.
Vanadium is used as pigment in the ceramics industry(known as ceramic pigments. The addition of vanadium pentoxide (as low as 0.02%)to glass can remove the high energy ultra-violet light that injures the eye and fades fabric. Vanadium can also be used to tint glass yellow-green, while a combination of vanadium and cerium oxides gives a green glass that turns purple on exposure to sunlight and can be used to measure the intensity of UV radiation.This application is expected to continue to show modest growth.
A new type of glass, known as xerogel ,has been developed at the Jet Propulsion laboratory in Pasadena, California, which has the ability to change colour in the presence of certain pollutants. The glass contains vanadium oxide and is pink under normal conditions, but after contact with hydrogen sulphide the xerogel turns amber, in ammonia it turns pale yellow, in formic acid greenish brown, in acetic acid green, and in hydrogen purple. The glass is molecules of different substances.Upon entering the pores, they react with the vanadium oxide, slightly changing the shape of the material and therefore altering the way in which the glass reflects. Development on industrial applications of xerogel is underway.
Vanadium can be used as the additions of pigments.A particular element can produce different colours in different host lattices: vanadium produces blue, yellow and green pigments depending on the host lattice.A particularly beautiful blue stain, known as vanadium blue, is prepared by heating zirconia and silica together in the presence of a vanadium compound to produce zircon crystals containing vanadium in solid solution;the crystal environment constrains the vanadium to tetravalent state, in which the hydrated ion is blue.
The oxide and metavanadates are used in the manufacture of printing inks, where they catalyse the formation of resinous black pigments from tar oils. Some quick-drying inks depend for their performance on the addition of ammonium metavanadate. Small amounts of V2O5 are also used in the textile-printing trade, where they help the oxidation of aniline to give black dyes of great intensity and fastness.
It is widely used in the ammonia industry like in the processing step of ammonium nitrate ans so on, so the ammonia and related products manufacturers ar e potential customers.
It can be used as corrosion inhibitor of the oil transferring pipelines in the oil refineries.
Vanadium-Bearing Cast Iron Ingot Mould
Vanadium, when added to cast irons in combination with titanium, increases the strength of irons. Vanadium-bearing cast irons exhibit good high temperature strength ,excellent resistance to oxidation and thermal fatigue. The durability of vanadium-bearing cast iron ingot mould is 24 times higher than that of traditional cast iron ingot mould . Therefore, vanadium-bearing cast iron is the idea material for ingot mould.
The function of vanadium in cast iron rolls is to increase the depth of chill and hardness on the surface of the rolls so that the surface quality of the rolls are improved.
The hard surface containing vanadium carbides also ensures that cracks do not form under thermal cycles resulting from the rolling of the hot steel.
Vanadium also refines the graphite of the core ,thus increasing the strength and toughness of the cast iron enabling it to resist impact loading during rolling operations.
Vanadium refine the grain size of cast steels and hence increase the toughness of the rolls. This enable the rolls to resist impact loading during rolling operations.
Wear Resistance Parts
The wear resistance of wear resistance parts depends largely on the type, the amount and the distribution of carbides in steel. Among carbide formers, the ratio of the abrasion resistance of Cr,W,Mo and V is 2F5F10F40,therefore, vanadium-bearing wear resistance parts exhibit excellent durability.
Vanadium in high carbon steels forms hard primary carbides during casting sometimes in combination with other elements present in the steel such as Cr,Mo and W.These carbides are stable at high temperatures and mostly remain in primary form throughout subsequent forging and heat treatment operations.They are the basis of the wear resistance and cutting performance of cold pressing dies and tools.The stability of these carbides makes high-speed steels suitable for high-speed machining operations and gives wear resistance to hot forging and pressing dies.
In addition to primary carbides, some vanadium remains in solution , through its effect on hardenability ,increase the strength and toughness of the tools and dies. During heat treatment some additional hardening occurs to give increased wear resistance as a result of the precipitation of very fine particles of secondary vanadium carbides.
By adjusting the chemical composition and heat treatment a wide variety of property combinations can be obtained.
The very importance of the high-speed steel used for cutting tools is red hardness, that is to say, the cutting edge should remain sharp at the high temperature reached at the tool tip which can be in excess of 600.The particles of vanadium carbide formed during casting and those formed through secondary precipitation satisfy this requirement.
Dies for hot forging ,stamping and pressing operations have to withstand high surface temperature ,high pressures , high thermal shock and impact loading, which demands the hot forging die steel to have high strength and toughness ,high thermal stability ,suitable high-temperature strength ,high resistance to thermal fatigue and high wear resistance In order to meet those requirements, microstructures giving a tough steel with a hard surface are required and vanadium provides the hardenability necessary to ensure a tough core and a surface containing carbides which ensure the resistance to wear.
Cold pressing dies have to withstand severe abrasion and pressing during cold pressing operations because the handling materials have high resistance to deformation. The cold pressing die steels must have high hardness, strength and wear resistance. These can be produced by high vanadium contents. Because normal casting tends to give coarse particles which can lead to cracking during forging. those dies are generally made by powder metallurgy techniques.
Vanadium is added to many grades of carbon tool steel. The precipitation of fine particles of vanadium carbide during heat treatment of the tools increases their hardness and improves their cutting efficiency, giving them long life.@Vanadium also refines grain size which improves toughness and lower the tendency to overheating.
3.Hot Formed Pressure Vessel Steel
Some pressure vessels of chemical plant are made from steel plates through hot forming. The thermal cycles of this forming procedure is similar to those in normalising. Vanadium steels give grain refinement and precipitation effect during mormalising. As a result of this the structure and properties of the plates remain largely unchanged despite the fabrication conditions
Vanadium is the most widely used alloying element for strengthening steels for construction.It can strengthen steels both in as-rolled condition and after heat treatment(normalising or quenching and tempering).It is the most effective alloy for increasing the strength of reinforcing bars .It is also a commonly adopted alloying element for strengthening steel sections,seamless tube ,plates for bridge,steels designed to resist fire and earthquake and atmospheric corrosion-resistant steels.
Microalloying of vanadium and nitrogen is the most effective way to make low carbon high strength reinforcing bar with excellent welding performance. It enables bar to ensure high yield strength as high as 500Mpa and good weldability at a lower carbon contents.
@ High strength: The yield strength and tensile strength are more than 400Mpa and 570Mpa,respectively.
A Good weldability: The carbon equivalency is less than 0.50% and hence they are adapted to all kinds of welding methods.
BHigh ratio of tensile strength to yield strength: The ratio is more than 1.25.
CExcellent strength and toughness combination as well as good bending property.
D Good earthquake resistance: The steel exhibits higher fatigue property under high strain and low cycle, lower sensitivity to strain aging and low brittle fracture transition temperature.
Vanadium bearing reinforcing bars are widely used in the construction of high-rise buildings, dams, tunnels and bridges.
The application of Vanadium bearing reinforcing bars can not only improve the construction quality but also save at least 15% steel material.
Plates for bridges are made from high strength weldable steel. In addition to higher strength, higher toughness and excellent weldability, good fracture toughness, aging impact toughness and high resistance to fatigue are required .Vanadium bearing plates can meet these requirements and they can be used in as-rolled condition for thin gauges and in normalizing condition or even in quenching and tempering condition for thick gauges.
Microalloying of vanadium and nitrogen is often used in general structural steels for the construction of factory buildings, houses or transmission towers and poles in place of low carbon structural steels for saving material and reducing weight. These grades of steel are produced as sections ,bars ,wires and tubes in addition to plates.
Lower Yield Ratio Plates For Earthquake Resistance
This kind of plate is used in high-rise buildings.In addition to high strength and toughness, excellent weldability is necessary to ensure spot welding without either preheating or post heat treatment , and lower yield ratio gives the plates enough plastic deformation work to guarantee the resistance to earthquake .
This grade of steel is often heat treated to obtain ferrite and temper sorbite which guarantee lower yield ratio . Vanadium is often added to the steel because vanadium can still play a role in enhancing strength and toughness in heat treatment condition.
As on element which can increase tempering stability of steel, vanadium is often added to steels which are designed to resist fire because good fire resistance is necessary for these steels in addition to merits of other weldable high strength steels.
Weathering Steels
The alloying of Cu and P is generally the basis of weathering steels. Vanadium is often added to strengthen the high strength weldable weathering steels in which the P content is limited within 0.04% for the sake of weldability.
Pipeline Steels
In addition to high strength, pipeline steels must exhibit high ductility and toughness, low ductility transition temperature , good weldability and especially excellent resistance to hydrogen induced cracking and stress corrosion cracking by hydrogen sulphide.
The first high strength pipeline steels were supplied in the normalized condition and vanadium was added with nitrogen to give a fine grain size and precipitation which contribute to high strength and toughness of the steels.
With the wide application of controlled rolling and controlled cooling, the pipeline steels are developed in the direction of low carbon and ultra-purity and niobium is widely adopted. However, V|Ti|iNj is still a good microalloying method for steel grades below X60. It has the following merits:
(1) The rolling load is lower and they are therefore easier to roll.
(2) They do not need low temperature rolling so that productivity is higher .
(3) They are more tolerant to variations in steel making and rolling processes as far as their properties are concerned.
(4) They have sufficient strength and toughness.
(5) They are almost free of surface cracks during continuous casting.
Vanadium is still used in niobium bearing controlled steels to ensure the strength of the pipelines where higher strength is needed or the wall is thick.
In order to avoid corrosion that results from hydrogen sulphide for pipelines for transport of sour gas, lower carbon and manganese contents are used and vanadium is added to compensate for the resulting loss in strength.
The strength of many plate steels for offshore platforms is achieved by the addition of vanadium. Heat treatment ultrahigh strength vanadium steels are applied for platforms in deep sea.
Pipeline Valves and Bends
Vanadium bearing steels are also used to make valves and bends in pipelines which are forged and welded from plates of normalized high strength steels because hot deformation has little effect on their strength and properties.
Oil storage tanks are made by welding normalized or quenched and tempered plate steels which depend for their strength on vanadium carbide precipitation.
6.Automobile Industries
The materials used for automobile industries must be reliable, machinable, fatigue resistant , economical and exhibit the highest strength-to-weight ratio to minimise fuel consumption.
Vanadium containing plate steels exhibit low anisotropy, narrow distribution of properties and low yield strength-to-tensile strength ratio which lead to low spring-back and high qualified rate during drawing.
Plate steels for chassis must have good forming performance and strength and ductility should be matched properly.
Vanadium is a common element in as forged steels which exhibit high strength in as forged condition and do not require the expensive heat treatment necessary with other steels.Vanadium as forged steel are widely used for crankshafts, connecting rods and steering knuckles in many automobiles and trucks. The surfaces can be hardened by nitriding or induction hardening.
Vanadium is added to silicon-manganese spring steels to increase sag-resistance and it is possible to reduce the size of springs .This makes a significant contribution to weight reduction and fuel economy.
7.Railway Industries
Vanadium contributes to the strength of eutectoid steels either through the decrease of the pearlite interlamellar spacing by delaying the phase transformation of austenite to pearlite after hot rolling or through precipitation in pearlite ferrite.
Vanadium contributes to the toughness of hypereutectoid steels by inhibiting the formation of carbide network resulting in hypereutectoid pearlite steels.
The addition of vanadium to rail steels can increase the tensile strength from about 700Mpa to over 1200MpaCand therefore increase the wear resistance of the rails which can be further improved by surface heat treatment at the end of the rolling process either in online or offline processing lines.
Main Beam of Railway Wagons
The carbon content can be reduced to improve the weldability and toughness of steels for main beam of railway wagons by grain refinement of precipitation hardening of vanadium.