high purity quartz
(HPQ)
Description
High-purity quartz is extensively utilized in industries of high technology where the purity is of utmost importance. Key applications include microchips and industrial integrated circuits, high-temperature lamp tubing, telecommunication and optics, microelectronics, etc. In particular, high-purity quartz is used in the optical fibres industry and in the construction of silicon cells utilized in photovoltaic systems.
There are generally nine (9) grades of quartz silica, however for simplicity these are grouped into four (4) categories, being:
HPQ SAND
- is high purity quartz silica with 99.99% of purity. This sand is used in high purity fillers, ceramics, specialty glass and molding compounds. Pricing US$1,000 to US$2,000 per tonne. On further purification, HPQ sand with more than 99.99% of purity can be obtained. This sand is further classified into various grades.
GRADE I
- includes high purity quartz having SiO2 concentration >99.99% but <99.995%. HPQ considered in the scope of Grade I is equivalent to the IOTA standard. Some of the common applications of Grade I HPQ include halogen and mercury lamps, optical glass, and custom production applications such as fused quartz tubing and ingots. Pricing ~ US$3,000 to US$7,000 per tonne.
GRADE II
- includes high purity quartz having SiO2 concentration >99.995% but <99.998%. HPQ considered in the scope of Grade II is equivalent to IOTA 4 and 5 standards. Some of the common applications of Grade II HPQ are monocrystalline crucibles for solar applications, high-quality fused glass, tubing, and quartz-ware. Pricing ~ US$8,000 to US$12,000 per tonne.
GRADE III
- includes high purity quartz having SiO2 concentration ≥99.998%. HPQ considered in the scope of Grade III is equivalent to the IOTA 8 standard. Some of the common applications of Grade III HPQ are semiconductor grade crucibles and high-end solar and semiconductor applications. Pricing ~ US$15,000 to US$20,000 per tonne.
High-purity quartz is extensively utilized in industries of high technology where the purity is of utmost importance. Key applications include microchips and industrial integrated circuits, high-temperature lamp tubing, telecommunication and optics, microelectronics, etc. In particular, high-purity quartz is used in the optical fibres industry and in the construction of silicon cells utilized in photovoltaic systems.
There are generally nine (9) grades of quartz silica, however for simplicity these are grouped into four (4) categories, being:
HPQ SAND
- is high purity quartz silica with 99.99% of purity. This sand is used in high purity fillers, ceramics, specialty glass and molding compounds. Pricing US$1,000 to US$2,000 per tonne. On further purification, HPQ sand with more than 99.99% of purity can be obtained. This sand is further classified into various grades.
GRADE I
- includes high purity quartz having SiO2 concentration >99.99% but <99.995%. HPQ considered in the scope of Grade I is equivalent to the IOTA standard. Some of the common applications of Grade I HPQ include halogen and mercury lamps, optical glass, and custom production applications such as fused quartz tubing and ingots. Pricing ~ US$3,000 to US$7,000 per tonne.
GRADE II
- includes high purity quartz having SiO2 concentration >99.995% but <99.998%. HPQ considered in the scope of Grade II is equivalent to IOTA 4 and 5 standards. Some of the common applications of Grade II HPQ are monocrystalline crucibles for solar applications, high-quality fused glass, tubing, and quartz-ware. Pricing ~ US$8,000 to US$12,000 per tonne.
GRADE III
- includes high purity quartz having SiO2 concentration ≥99.998%. HPQ considered in the scope of Grade III is equivalent to the IOTA 8 standard. Some of the common applications of Grade III HPQ are semiconductor grade crucibles and high-end solar and semiconductor applications. Pricing ~ US$15,000 to US$20,000 per tonne.