โ Scribed by W.M. Meyers
No coin nor oath required. For personal study only.
IN A recent study of the ground mica industry, I was impressed with the waste of mica incurred through incomplete settling of fine material, and its irrecoverable loss when carried away in the waste water. As finely ground mica is worth over $100 a ton, the bureau has conducted a study to decrease the loss of fine mica. Laboratory tests were conducted which indicate that the use of flocculating reagents may solve the problem.
The properties of electrolytes and their application in flocculating fine materials in clays is well known, and the method has also been used with some success on ore slimes.
The experiments show that a number of reagents are suitable in settling fine mica, but sulphuric acid, aluminum sulphate, and potash alum appear to be the most suitable. Further information will be found in Serial 2798, recently published by the Bureau of Mines.
FOR SEPARATING HYDROCARBONS IN COAL GAS.
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By THE(). I). RA~'D