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How Graphite Is Made

Synthetic graphite can be produced from coke and pitch. It tends to be of higher purity though not as crystalline as natural graphite. There are essentially two types of synthetic graphite. The first is electrographite, which is pure carbon produced from calcined petroleum coke and coal tar pitch in an electric furnace. The second type of synthetic graphite is produced by heating calcined petroleum pitch to 2800°C. On the whole synthetic graphite tends to be of a lower density, higher porosity and higher electrical resistance. Its increased porosity makes it unsuitable for refractory applications. Synthetic Graphite consists mainly of graphitic carbon that has been obtained by graphitisation, heat treatment of non-graphitic carbon, or by chemical vapour deposition from hydrocarbons at temperatures above 2100K.

 

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Global Warming: Agree or Disagree
Global warming is the rise in the average temperature of Earth's atmosphere and oceans since the late 19th century and its projected continuation. Since the early 20th century, Earth's mean surface temperature has increased by about 0.8 C (1.4 F), with about two-thirds of the increase occurring since 1980.[2] Warming of the climate system is unequivocal, and scientists are more than 90% certain that it is primarily caused by increasing concentrations of greenhouse gases produced by human activities such as the burning of fossil fuels and deforestation.

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He graduated from the University of Toronto with a Bachelor of Medicine in 1922. In 1923, he was appointed a medical missionary to Henan, China and served until 1948. He was the only medical missionary in India and China who was able to provide radium treatment for cancer. He was also on the staff of the Church Missionary Society Hospital at Gaza, Palestine

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J.Vincent Concrete Contractors Inc. is greater Philadelphia's premier stamped concrete contractor specializing in commercial and residential stamped concrete patios, sidewalks, pool decks, steps and driveways.