Titanium Electrorefining
The development of a fused-salt Titanium Electrorefining technique to recover hyperpurity titanium from offgrade sponge and mill scrap, under investigation by the Federal Bureau of Mines Electrometallurgical Experimental Station at Boulder City, Nev., for several years has been described in many publications. This report describes the investigations to obtain greater capacity by increasing the depth […]
Underground Storage for Hydrocarbon Fluids
Several categories of storage are used depending on capacity. Operational storage, which is small in comparison with the market, facilitates handling surges of a few hours’ or a few days’ duration. Seasonal storage, usually larger, permits accumulation of product during seasons when demand is low, for delivery when demand is high. In producing areas, large […]
Refining of Nickel Copper Cobalt Mattes by Pressure Leaching and Hydrogen Reduction
The paper is based on laboratory and pilot plant investigations which led to the development of a series of processes for production of high purity metals from nickel-copper-cobalt mattes of a wide range of opposition. Matte Refining The application of these processes to the refining of mixed base metal mattes is governed by several factors, […]
Aggregates Classification Methods
Modern concrete technology emphasizes the basic qualities required of an acceptable aggregate: it must be clean, sound, homogeneous, and of a size gradation resulting in a concrete of the desired physical qualities at a minimum cost. In the case of coarse aggregates, crushing, scrubbing, and screening will usually provide the required material, although beneficiation is […]
Coke Productivity from Coal Charge Characteristics
In considering the use of a coal or a coal blend for the production of metallurgical coke, the fact is often overlooked that laboratory data can be most effectively used to determine coke plant operating conditions conducive to maximum output as well as to predict the quality of coke produced. The basic property of any […]