Factors Affecting Ball Mill Grinding Efficiency
The following are factors that have been investigated and applied in conventional ball milling in order to maximize grinding efficiency: a) Mill Geometry and Speed – Bond (1954) observed grinding efficiency to be a function of ball mill diameter, and established empirical relationships for recommended media size and mill speed that take this factor into […]
Heap Leach Pad Liner: Differential Settlement
The maximum settlement (S) of the soil subbase occurs at the center of the wetted soil column. There would be little to no settlement along the dry edges of the column. The total settlement can be estimated by multiplying the percent soluble minerals times the controlling depth, DI. As the liner deflects to fill the […]
Infographic List
30 Ghana Gold Facts Asteroid Mining Mining & iPhone Recycling Ocean Floor Mining How Moon Mining Works Mining Minecraft Diamond Mining the Arctic Minerals 7 Dangerous Minerals 7 Top Rare Earths Mining the Moon 5 most colourful minerals 5 minerals hard names 5 Rarest gemstones 5 More elements for life Elements life depends on 15 […]
Laboratory Air Classifier
LABORATORY AIR CLASSIFIER OFFERS DRY SEPARATION DATA ON SMALL-SCALE One of the problems confronting many laboratories handling dry grinding and separation problems is the proper method of sizing the products. To meet this need, our Equipment Company has developed the Laboratory Air Classifier for dry materials. The unit is available in two sizes. The Model […]
Laboratory Solvent Extraction and Stripping Units
Laboratory Solvent Extraction and Stripping Units Evaluate Process Prior to Commercial Size Installation The Laboratory Solvent Extraction and Stripping Units provide a completely visual control of the solvent extraction process. There is great flexibility in regulating speed of agitators, recirculation of the organic phase or aqueous phase. The system provides counter-current flow. No pumps are […]
Free Gold in Arsenopyrite, Pyrrhotite, Pyrite
This study deals with an ore containing coarse and fine free gold associated with arsenopyrite, pyrrhotite, pyrite and graphite in a quartz and slate gangue. The sulphides and graphite constitute 10 to 12% of the ore. Treatment required utmost economy. The flowsheet was developed from batch and pilot tests with the required flexibility to permit […]
Quenching Unit
Susquehanna-Western, Inc. Uses Spiral Classifier For Quenching Unit A 36″ x 19′-10″ Spiral Classifier is used for quenching an 800°F calcine at the Karnes County, Texas, uranium mill of Susquehanna-Western, Inc. The coarse —1½” x 0″ hot calcine is fed directly to the Spiral Classifier at the rate of 12.5 tons per hour. The classifier […]
Fine Coal Recovery
Fine Coal Recovery and Mine Backfill Preparation: The coal mines in the Sunnyside, Utah, area have been mined continuously since 1896 and prospered as Bee Hive oven coke producers until 1924. The introduction of natural gas for firing reverberatory copper furnaces curtailed the market for Bee Hive oven coke and the mine production fell drastically. Some […]
Designing Small CCD Cyanide Plant
The world demand for gold and international economic pressures for an advance in price have accelerated interest in gold and silver production. Many opportunities exist throughout the world for small cyanide plants both for production and pilot operations, especially in areas not easily accessible, and where labor and local costs are on a level for […]
Eddy Current Testing
An eddy current is a circulating electric current induced within the body of a conductor when that conductor either moves through a nonuniform magnetic field or is in a region where there is a change in the magnetic flux. Typical currents of this sort resemble in form the eddies in flowing streams of turbulent water, hence, the name eddy […]