High Purity 99.95% Tungsten Particles Tungsten Particles Tungsten Particles

Product Detail

size:custom madePackaging and Delivery:mutual agreement
Sample delivery:7-20 dayspayment terms:L/C,Western Union,D/P,D/A,T/T,MoneyGram
Material:Tungstenplace of origin; place of origin:Jiangsu, China
Impurity content:0.00001%brand:Honor
port:Shanghai PortParticle size:40
model:16product name:High-purity tungsten particles
Specification
place of origin; place of origin
Jiangsu, China
brand
Honor
product name
High-purity tungsten particles
size
custom made
Material
Tungsten
sample delivery
7-20 days
Product Description
Metal tungsten particles are used as an oxidizing flux for burning samples in infrared carbon and sulfur analyzers, which help to lower the melting point of the sample and improve the release of carbon and sulfur.

Metal tungsten particles Pure tungsten (w) C/S analysis flux C≥0.0008% S≥0.0003%
Package:2500 grams
Specification:-1180μm+850μm(-16~+20) -850μm+425μm(-20~+40) -425μm+250μm(-40~+60) -250μm+180μm(-60~+80)
Impurity content:C≤0.001% S≤0.0007% O≤0.05
Tungsten particle flux is suitable for carbon and sulfur analysis of ordinary steel and alloy steel
Type A:C<0.008% S<0.005% Impurities<0.05% Particle size: -20~+440 mesh and -40~+60 mesh Net weight: 2500g/bottle and 3000g/bottle
Type B:C<0.0005% S<0.003% Impurities<0.05% Particle size: -20~+40 and -40~+60 mesh Net weight: 1000g/bottle and 2500g/bottle

introduce:
-1- Tungsten particles 20-40 mesh size high-purity tungsten particles Details:
1. The appearance is bright gray polyhedral particles.
3. Requirements for carbon, sulfur and oxygen: C≤0.001%, S≤0.0007%, O≤0.05%.
2. It can produce 12 mesh to 100 mesh.
Application range:Mainly used as a co-solvent for carbon and sulfur analysis.
-2-. Tungsten particles 20-40 mesh size

The principle of high-purity tungsten particles:
Tungsten is the most difficult metal to melt, with a melting point of 3380°C. It is used as an additive because tungsten is easily oxidized. When oxygen passes through at 650°C, tungsten begins to oxidize and releases a lot of heat. It has the characteristics of high calorific value and fast reaction speed.
Tungsten should be called an additive, not a flux, because the role of the additive is not only a flux, but also multiple functions such as heating, adjusting the pH of the medium, stirring, catalysis, combustion stability, and anti-interference.

The oxidation product of tungsten trioxide is a bulky acid oxide. Its formation facilitates the release of CO2 and SO2 without forming a coating covering the sample.
For non-magnetic materials, pure iron should be added.
Tungsten trioxide sublimates above 900°C. Due to the escape of tungsten trioxide, the diffusion rate of carbon and sulfur is increased, so that the carbon and sulfur in the sample are fully oxidized. After the volatilized tungsten trioxide leaves the molten pool, it transforms into a solid phase at 700-800°C, covering the remaining Fe2O3 in the pipeline to prevent the pipeline from adsorbing sulfur.
The blank value of tungsten is very low, which can be used for the determination of low carbon and low sulfur. Generally, tungsten and tin are used in combination as additives. The main function of tin is to reduce the influence of insufficient fluxing effect of tungsten.
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