News Center
SF6-alternative gases discharge for mining

SF6-alternative gases discharge for mining

Investigations of the lightning impulse breakdown characteristics of a SF6/N2 gas mixture, N2 gas and CO2 gas have been carried out. In the case of the SF6/N2 gas mixture the 50% breakdown (electric) field strength for the positive impulse voltage was slightly lower than that for the negative impulse voltage, and the pressure of the SF6/N2 gas mixture must be increased to approximately twice ...

[email protected]

News Detail

  • Sulfur hexafluoride | F6S - PubChem

    Sulfur hexafluoride is a sulfur coordination entity consisting of six fluorine atoms attached to a central sulfur atom. It is the most potent greenhouse gas currently known, with a global warming potential of 23,900 times that of CO2 over a 100 year period (SF6 has an estimated lifetime in the atmosphere of between 800 and 3,000 years).

    Get Price
  • COMPARISON OF F2-BASED GASES FOR HIGH-RATE

    Four different Fz-based gases (SF6, NF3, PF5, and BF3) were examined for high rate Inductively Coupled Plasma etching of Si. Etch rates up to -8 pm/min were achieved with pure SF6 discharges at high source power (1500W) and pressure (35mTorr). A direct comparison of the four feedstock gases under the same plasma conditions showed the Si

    Get Price
  • Gas Discharge and Gas Insulation | SpringerLink

    It covers gas dielectrics, SF6 and its mixtures, and potential alternative gases, providing fundamental information on gas discharge and gas insulation and especially focusing on the development of new environmentally friendly insulating gases over the last decade. The book begins by describing the insulating and arcing characteristics of SF6

    Get Price
  • Assessment of Eco-friendly Gases for Electrical

    Gases for electrical insulation are essential for the operation of electric power equipment. This Review gives a brief history of gaseous insulation that involved the emergence of the most potent industrial greenhouse gas known today, namely sulfur hexafluoride. SF6 paved the way to space-saving equipment for the transmission and distribution of electrical energy.

    Get Price
  • IET Digital Library: Lightning impulse breakdown

    Investigations of the lightning impulse breakdown characteristics of a SF6/N2 gas mixture, N2 gas and CO2 gas have been carried out. In the case of the SF6/N2 gas mixture the 50% breakdown (electric) field strength for the positive impulse voltage was slightly lower than that for the negative impulse voltage, and the pressure of the SF6/N2 gas mixture must be increased to approximately twice

    Get Price
  • Decontamination of grains and legumes infected with

    The plasma decontamination process was performed by batch process in vacuum chamber, using gas injection followed by plasma discharge for the duration of 5-20 min. The plasma treatment reduced the fungal attachment to seeds below 1% of initial load depending on the initial contamination level, while preserving germination quality of the seed.

    Get Price
  • Methane Control for Underground Coal Mines

    the gob and carry the gas up the shaft to the surface. The recommendations were reviewed by a committee of mining engineers, but were dismissed as impractical. In-mine cross-measure holes were used in North Wales in the late 1800s to drain gas from overlying virgin coal- beds. The first successful large-scale use of cross-measure in U.S.

    Get Price
  • Decomposition by-products of C6F12O/N2 and C6F12O/air

    Decomposition by-products of C6F12O/N2 and C6F12O/air mixed gases under AC 50Hz corona discharge: ZHAO Ming-yue 1,2, HAN Dong 1,2, HAN Xian-cai 3, YAN Xiang-lian 4, RONG Wen-qi 1,2, ZHANG Guo-qiang 1,2: 1. Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China;

    Get Price
  • Five ways mining has already gone green - MINING.COM

    Jun 14, 2016Methane capturing mining techniques, like those used by CONSOL Energy Inc., manage to keep one byproduct of coal mining activities, methane gas, under control. Not

    Get Price
  • Different Types of Explosives Used in Mining

    Sep 04, 2019The Industrial Revolution carried discoveries in explosives and initiation technologies. A specialization principle, therefore, operates between the military and civil application of explosives thanks to new products economics, versatility, strength, precision or capability to be stored for long periods without significant deterioration.

    Get Price
  • Mine Water Treatment Solutions for Discharge and Re

    Since more than 70% of all pollutants from the mining industry are emitted into water, the removal of these contaminants prior to discharge is receiving significant attention. It is critical to avoid a discharge of toxic components into the environment and subsequently back to the food-chain.

    Get Price
  • 12.3 Primary Copper Smelting

    steps include mining, concentration, roasting, smelting, converting, and finally fire and electrolytic refining. 12.3.2 Process Description2-4 Mining produces ores with less than 1 percent copper. Concentration is accomplished at the mine sites by crushing, grinding, and flotation purification, resulting in ore with 15 to 35 percent copper.

    Get Price
  • Use in Mining | International Cyanide Management Code

    Gold and silver typically occur at very low concentrations in ores - less than 10 g/t or 0.001% (mass basis). At these concentrations the use of aqueous chemical (hydrometallurgical) extraction processes is the only economically viable method of extracting the gold and silver from the ore. Typical hydrometallurgical recovery involves a leaching step during which the metal is dissolved in an

    Get Price
  • ‎Gas Discharge and Gas Insulation on Apple Books

    It covers gas dielectrics, SF6 and its mixtures, and potential alternative gases, providing fundamental information on gas discharge and gas insulation and especially focusing on the development of new environmentally friendly insulating gases over the last decade. The book begins by describing the insulating and arcing characteristics of SF6

edge-iconRelated News
toTop
Click avatar to contact us
Chat Online