Sulfur crushed bulk

Slate, another type of formed sulfur, was the sulfur industry s first attempt at developing a formed product which would generate less dust than the traditional crushed bulk sulfur commonly used until the 1960s. Slate is produced by pouring a thin (usually up to... 

Crushed bulk is the least acceptable type of solid sulfur. It is created when using earth-moving equipment to recover sulfur which has been allowed to solidify in sheet or vats. Obviously, the product is extremely dusty. Very few producers (Former Soviet Union, Iran) still ship crushed bulk. Most consumers refuse to accept shiploads even at significant price discounts due to dustiness, related contamination, and product loss. A U.S. patent was recently issued to d Aquin for a revolutionary solid sulfur unloading system in marine application which eliminates dust and controls acidity with most formed sulfur.12... 

The bulk of the samples for this study came from TVA s Allen Steam Plant at Memphis, Tenn. The sampling points (Figure 4) included inlet air, coal, bottom ash, precipitator inlet, and outlet at the 268-ft stack level. During the 2-week sampling period the unit was operated under steady state conditions at 240 MW (12) with a uniform coal supply so that a mass balance might be established for a number of elements. All the coal from southern Illinois was washed and crushed so that 90% was less than 4 mesh. Nominal coal analysis indicated the following composition 9.5% moisture, 34% volatiles, 43% fixed carbon, 13% ash, and 3.4% sulfur. 

At the mill, usually located close to the mine, the ore is crushed and ground to a fine slurry. Sulfuric acid, in which uranium is soluble, is used to leach the product from the bulk material. The residue, consisting of undissolved solids (waste rock) is referred to as the tailings. This material contains most of the radioactivity including radium and toxic materials such as heavy... 

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