Search results
Results from the WOW.Com Content Network
Amorphous or "plastic" sulfur is produced by rapid cooling of molten sulfur—for example, by pouring it into cold water. X-ray crystallography studies show that the amorphous form may have a helical structure with eight atoms per turn. The long coiled polymeric molecules make the brownish substance elastic, and in bulk it has the feel of crude ...
Sulfur (m.p. 115 °C) melts and flows into the middle tube. Water pressure alone is unable to force the sulfur into the surface due to the molten sulfur's greater density, so hot air is introduced via the innermost tube to froth the sulfur, making it less dense, and pushing it to the surface. [1] The sulfur obtained can be very pure (99.7 - 99.8%).
Amorphous sulfur is the quenched product from molten sulfur hotter than the λ-transition at 160 °C, where polymerization yields catena sulfur molecules. [2] (Above this temperature, the properties of the liquid melt change remarkably.
Each chamber had a floor with several openings for moving the molten sulfur. Each of the openings would move a shot of sulfur at different times and allow small amounts of sulfur to be processed. It was a costly system to put in place, but it also reduced many gas and pollution that entered into the air.
Piles of sulfur produced in Alberta by the Claus process awaiting shipment at docks in Vancouver, Canada. The Claus process is the most significant gas desulfurizing process, recovering elemental sulfur from gaseous hydrogen sulfide.
Sulfur polycations, S 8 2+, S 4 2+ and S 16 2+ are produced when sulfur is reacted with oxidising agents in a strongly acidic solution. [1] The colored solutions produced by dissolving sulfur in oleum were first reported as early as 1804 by C.F. Bucholz, but the cause of the color and the structure of the polycations involved was only ...
The rail company explained that, when molten sulphur burns, it releases sulphur dioxide. Sulphur dioxide is known to affect the human respiratory system, which can make breathing very difficult ...
In this step elemental sulphur, usually in solid form is added to the molten crude lead bullion to react with the contained copper. A " matte " layer forms in this step, containing most of the copper originating from the crude lead bullion and some other impurities as metal sulfides.