99.9% Graphite Powder flake graphite powder Crystalline Flake
Graphite
production
High purity graphite refers to graphite powder containing more than
99.9% carbon, high purity graphite of high carbon content, such
high purity graphite has good conductivity, lubrication,
high-temperature resistance, wear resistance, etc.
The use of high purity graphite in the field of industrial
production has excellent performance. High purity graphite is used
in conductive, lubrication, metallurgy, and other industrial
production fields. High purity graphite production, from the
beginning of the raw materials, should be strictly controlled the
content of impurities, choose low ash raw materials, and in the
production process to prevent the increase of pollutants as far as
possible. However, the reduction of contaminants to the degree
required is primarily in the graphite chemical sequence.
Graphitization occurs at high temperatures, where the oxides of
many impurity elements will decompose and evaporate.
Grade | Fixed Carbon
(%) | Particle Size
(mesh) | Moisture
(%) | PH | Fluoride
(ppm) | Chloride
(ppm) |
HS3299AA | >99 | +32 | <0.5 | 6-8 | <50 | <50 |
HS59998AA | >99.98 | +50 | <0.5 | 6-8 | <50 | <50 |
HS59995AA | >99.95 | +50 | <0.5 | 6-8 | <50 | <50 |
HS599AA | >99 | +50 | <0.5 | 6-8 | <50 | <50 |
HS899AA | >99 | +80 | <0.5 | 6-8 | <50 | <50 |
HS599 | >99 | +50 | <0.5 | 3-6 | * | * |
HS5999 | >99.9 | +50 | <0.5 | 3-6 | * | * |
HS+199AA | >99 | +100 | <0.5 | 6-8 | <50 | <50 |
HS-199AA | >99 | -100 | <0.5 | 6-8 | <50 | <50 |
1. Conductivity, thermal conductivity: The conductivity of graphite
than the general non - metallic ore 100 times higher. The thermal
conductivity exceeds that of steel, iron, lead, and other metallic
materials. The thermal conductivity decreases with temperature, and
even at very high temperatures, graphite becomes adiabatic.
Graphite conducts electricity because each carbon atom in graphite
forms only three Covalent bonds with other carbons, each of which
remains one free electron to carry the charge.
2. Chemical stability: Graphite in the room temperature has
excellent chemical durability, acid resistance, alkali resistance,
and resistance to organic solvent corrosion.
3. Thermal shock resistance: Graphite in the room temperature when
used to withstand the dramatic changes in temperature without
destruction, temperature mutation, the volume of graphite changes
little, will not produce cracks
