Blogs
Mobile Crushers
Table of ContentsHow Mobile Crushers OperateMobile Crusher Installation DesignHigh-Capacity Mobile CrushersOperation of Mobile Crushing Plant It was a German limestone quarry that saw the World’s first mobile crusher. The idea was born to take advantage of a continuous belt conveyor haulage and eliminate the costly road construction and up-keeps on wet ground. Since then, the mining industry, mostly quarries have seen
Metallurgy Tutorials, Exercises and Examples
Introduction Industrial Furnaces Material and heat balance in converting Material and heat balance in roasting of chalcopyrite ore Material balance in Coke making Material balance in cupola Material balance in mineral processing Material balance in roasting Materials Balance in Iron making Matte smelting Materials balance Measurement of Quantities Mineral Beneficiation Production of Gaseous fuel Pyrometallurgical extraction (Roasting) Reduction smelting of
Hardinge Conical Ball Mill
Table of ContentsCONICAL BALL MILL WORKING PRINCIPLEHardinge Conical Ball Mill Liners The Hardinge Ball Mill consists of three sections. After the usual type of trunnion bearing the mill consists of a short conical section showing a sharp drop from feed entrance to maximum mill radius. A cylindrical section of varying length then follows and toward the discharge end connects with
Rock Crushing Rule of Thumb
Table of ContentsCrusher SelectionCrusher DesignCrusher InstallationCrusher CostsThe Crusher’s Rock BreakersArea of Application Here is a list of Rules of Thumb often used in Rock Crushing and around Crushers: Crusher Selection For a hard rock mine application below 600 tonnes/hour, select a jaw as the primary crusher. Over 1,000 tph, select a gyratory crusher. Between these capacities, you have a choice. Source: Chris Ottergren
Mineral Processing / Metallurgy Rules of Thumb
Here is a list of General Rules of Thumb often used in Mineral Processing and Metallurgy: A concentrator (mill) requires up to 3 tons of water for each ton of ore processed. It is therefore important to operate with the maximum practical pulp density and minimum practical upward or horizontal movement. The basic philosophy requires movement over the shortest possible distances between processing
Grinding Rule of Thumb
Here is a list of Rules of Thumb often used in Grinding Circuits: Fine ore bins (or stockpiles) that provide feed to the grinding circuit should have a capacity equal to 30 hours of processing. Source: Northern Miner Press Grinding is a low-efficiency, power-intensive process and typically can account for up to 40% of the direct operating cost of the mineral processing
Froth Flotation Rule of Thumb
Here is a list of Rules of Thumb often used in Froth Flotation: Clean metallic gold particles (free gold) finer than 200 microns (65 mesh) float readily with appropriate reagents. Gravity separation is desirable for larger particles. Source: Mining Chemicals Handbook (Cyanamid). When designing the flotation circuit for a proposed mill, the scale-up factor for flotation retention times obtained from bench tests is
Stockpile Segregation
The video below graphically explains the common problem of Coarse Ore Stockpile Segregation. This topic relates to SAG Mill tonnage and the bad habit of putting bulldozers “dozers” on ore stockpiles. Stockpile-Segregation”>
Badger Jaw Crusher
With its 5″ x 7″ jaws, the 800 lbs Badger Jaw Crusher provided exceptional crushing capacity of 1300 lbs/hr (at 3/4″ P80) with minimum power consumption obtained by a unique 400 RPM movable jaw plate motion.
Chipmunk Jaw Crusher
Chipmunk Crushers have been around for decades. The Chipmunk is a very solid high performance 300 lb crusher mostly used in laboratory. Its jaw opening in 2 1/4″ x 3″. The Chipmunk Jaw Crusher cost around $4500 without motor and $7000 with motor. An alternative to buying a chipmunk crusher is the 911MPEJAC23 rock crusher without or with motor.
Chrysocolla Flotation
The effect of pH on the flotation response of Chrysocolla and chalcocite with potassium octyl hydroxamate as collector. The potential for the chalcocite system is slightly oxidizing. A detailed electrochemical investigation of chalcocite with a collector that does not oxidize, namely a chelating compound, potassium octyl hydroxamate shows the pH dependence of the floatability of chrysocolla (a hydrous copper silicate) and that of
Flotation Tests
Batch and continuous flotation tests are the quickest, safest, and most economical method of determining flotation and other ore dressing problems. Best use an ore testing facilities under the direction of experienced metallurgical engineers. Tests eliminate errors and are moderate in cost. Laboratory equipment is available for complete tests covering grinding, flotation, gravity concentration, amalgamation, leaching, and cyanidation. A plant for
Flotation Flowsheets
A flotation flowsheet should be as simple and flexible as possible, because changes in the ore often necessitate changes in treatment: the more flexible the flotation machine, the easier and quicker the changes can be made, not only in regard to flexibility in arrangement of cells, but also the ability to treat coarse as well as fine material. The flexible points
Flotation Cells
Table of ContentsMinerals Separation Sub-aeration Flotation CellsSub-A Flotation CellsDrive of M.S. Sub-aeration and Denver “Sub-A” Flotation CellsRegulation of Mechanically Agitated Flotation CellsGeco Flotation Cells More ores are treated using froth flotation cells than by any other single machines or process. Non-metallics as well as metallics now being commercially recovered include gold, silver, copper, lead, zinc, iron, manganese, nickel, cobalt, molybdenum,
Flotation Cell Design
The task for the “Sub-A” Flotation Machine-Cell design is solid as it is made of heavy steel joints are electric welded both inside and out. Partition plates are furnished with gaskets and arranged for bolting to partition channels so that if necessary all of the plates can be changed at any time in the field to provide either a right
Difference Between Clarifier and Thickener
Table of ContentsHOW THICKENERS WORKSmall Thickener Capacity Sizing TableTHICKENER TEST SERVICEHYDRO CLASSIFIERS The Difference Between a Clarifier and a Thickener is subtle as they will visually look the same. Fundamentally, thickeners and clarifiers are both used to settle solids which results in the separation of liquids and solids. Thickeners are used to concentrate solids, while clarifiers are used to purify liquids. A
Standard Bond Ball Mill Grindability Test Method-Procedure
Here is the old Allis-Chalmers Bond Work Index Grindability Test Procedure. The standard feed is prepared by stage crushing to all passing a 6 mesh sieve, but finer feed can be used when necessary. It is screen analyzed and packed by shaking in a 1000-cc graduated cylinder, and the weight of 700 cc is placed in the mill and ground
Laboratory Support
SUPPORT, Iron, Rectangular Base—Heavy, stable cast iron rectangular base, with corner legs care-fully ground to insure solidity and upper surface ground flat, with heavy tapped boss to take the support rod, protectively coated with baked-on japan. With copper plated steel support rod. SUPPORT, Iron, Rectangular Base—Similar but fitted with detachable black japanned cast iron rings with screw clamps. SUPPORT, Iron, Triangular Base—With cast
Laboratory CounterTop Stirrer and Agitator
STIRRER, Universal Motor, Electric—A small, compact electric motor with clamp attached directly to the frame for mounting on a laboratory standard. The motor is of the constant speed, Universal Type, interchangeable on A.C. of different cycles or D. C. circuits of the same voltage, but not as to voltage. Variable speed is secured by means of a friction disc drive. The speed may be regulated over the
Sample Spatula
SPATULA, Porcelain—Glazed. Spatula on one end, spoon on the other. SPATULA, Steel—Flexible steel blade with riveted wooden handle. SPATULA, Steel—Flexible tapered thin steel blade, with wooden handle. SPECTROSCOPE, Direct Vision—Can be used in any analysis where wave length scale is unnecessary, as bright lines of metals and gases and absorption bands in gases are shown. Compactly constructed and dust-proof. All forms consist of