Blog of Mineral Processing (Metallurgy) Articles

Cone Crusher

Here are facts about the cone crusher known as Hydrocone. This line of hydraulically adjusted gyratory crushers was developed in the smaller sizes some fifteen years ago by Allis-Chalmers to meet a demand for improved secondary or tertiary crushing units. The line is now expanded to include sizes up to 84-in. diameter cones.

This modern crusher is the result of many years of experience in building all types of crushing equipment, when the first gyratory or cone crusher, the Gates, was put into operation. Over all these years AC has followed a continuing policy of improvement in crusher

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By | October 19th, 2016|Categories: Crushing & Screening, Equipment|Tags: |Comments Off on Cone Crusher

Jaw Crusher

jaw-crusherThis jaw crusher is finest of lines of jaw crushers which we offer. Others include: Superior, Type “B” Blake, Fine-Reduction and Dodge — sizes, 4 by 6 to 84 by 66 inches. A reciprocating machine, the crushes material in a straight line between jaws — without grinding or rubbing surfaces.


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By | October 18th, 2016|Categories: Crushing & Screening, Equipment|Comments Off on Jaw Crusher

Mineral Processing and Extractive Metallurgy Methods

A successful search for and development of a new mineral deposit rests not only in its discovery but also in economical processing of the ore. Via the Science of its engineering, Mineral Processing and Extractive Metallurgy allows the evaluation of metal recovery Methods laid-out or expressed as a process flowsheet.

The challenge of discovery and development, the processing and profit from mineral resources have resulted in many different process flowsheets. There has been a constant advance in mineral technology for hundreds of years. The process flow we consider highly successful today may

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By | April 14th, 2016|Categories: Concentrator Manuals/Procedures, Flowsheets & Flowcharts|Comments Off on Mineral Processing and Extractive Metallurgy Methods

Gold Refining Process

To present the essential points of all methods of gold refining commonly practised, as well as those of historic interest,” was the author’s purpose in this volume. The fifteen chapters of which the book consists deal with the Simpler Methods of Early Days;

Amalgamation Process; Refining with Oxidising and Chloridising Agents;Gold Refining Sulphur Refining; Refining with Cementation Processes, and by means of Oxygen and Air; Miller’s Process and that adopted at the Melbourne Mint; Parting with Nitric Acid (two chapters); Recovery of Silver from Nitrate Solutions; Refining by Sulphuric Acid; Parting by Electrolysis; Electrolytic Refining of Gold; Separation of Platinum from Gold; Treatment of Cyanide Precipitates; Refining of Gold Slimes by Nitric and Sulphuric Acid; the Nitre Cake Method of Purifying Slimes.


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By | April 1st, 2016|Categories: Gold Refining|Tags: , , |Comments Off on Gold Refining Process

Mineral Processing Flowsheets

The Mineral Processing Flowsheets shown on the following pages are based on actual data obtained from successful operating plants. Metallurgical data are shown in these flowsheets which incorporate Crushers, Grinding Mills, Flotation Machines, Unit Flotation Cells, and Selective Mineral Jigs as well as other standard milling equipment.

The Flotation Machine, the Selective Mineral Jig and the Unit Flotation Cell have revolutionized flowsheet design and have made it possible for both small and large plants to increase recoveries and economical return. The Unit Flotation Cell and

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By | March 8th, 2016|Categories: Flowsheets & Flowcharts|Tags: , , |Comments Off on Mineral Processing Flowsheets

Gyratory Crushers

The below image shows a sectional view of a typical gyratory crusher. This type of machine is, by virtue of chronological priority, known as the “standard” gyratory crusher. Although it incorporates many refinements in design, it is fundamentally the same crusher that first bore the name of “gyratory”; its crushing chamber is very much the same shape; the motion is identically the same, and the method of transmitting power from belt to crushing head is similar. It

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By | February 17th, 2016|Categories: Crushing & Screening|Comments Off on Gyratory Crushers

Ball Mills

Nowadays grinding mills are almost extensively used for comminution of materials ranging from 5 mm to 40 mm (3/16″—1 5/8″) down to varying product sizes. They have vast applications within different branches of industry such as for example the ore dressing, cement, lime, porcelain and chemical industries and can be designed for continuous as well as batch grinding.

Ball Mills

Ball mills can be used for coarse grinding as described for the rod mill. They will, however, in that application produce more fines and tramp oversize and will in any case necessitate installation of

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By | December 2nd, 2016|Categories: Ball Mills, Equipment|Comments Off on Ball Mills

Rotary Kiln Maintenance

Rotary Kiln Alignment

The continuity of operation of a lime sludge kiln requires strict maintenance control. The rotary kiln is among the largest type of moving machines made and is subjected to extreme temperatures, power failures, atmospheric conditions, varying loads, and other operating conditions which affect its wear and alignment. It should be erected under the supervision of an experienced erecting engineer.

Even though great care has been taken in the design and the construction of the concrete piers, in some cases settling or tipping of the foundation can occur, throwing the carrying mechanisms, bases, and

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By | November 28th, 2016|Categories: Equipment, Reagents and Chemicals|Tags: , , |Comments Off on Rotary Kiln Maintenance

Rotary Lime Kiln Operation

Precipitated calcium carbonate, commonly called lime sludge or lime mud, is produced when sulphate green liquor is causticized with lime. For many years this lime sludge was considered a waste product and was dumped into rivers or waste ponds, or used for fill around the plants. Large quantities of new lime were purchased from commercial producers to replace that lost in the sludge waste.

A number of paper manufacturers soon became aware of the savings that could be achieved by recovering the lime. Beginning in the ’20’s, efforts were directed toward lime recovery installations. Today, a

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By | November 28th, 2016|Categories: Equipment, Reagents and Chemicals|Tags: , , |Comments Off on Rotary Lime Kiln Operation

Clinker Cooler

The Air-Quenching shaking grate Clinker Cooler was developed more than 20 years ago as an improved heat recuperating cooler for use with rotary kilns. It was designed to air quench and cool large quantities of hot clinker rapidly, and to recover and return to the kiln a major portion of the heat from the clinker.

It was immediately successful in the cement industry. The capture of secondary combustion air above the cooling clinker was a big forward step in achieving better rotary kiln economy and fuel utilization. Besides fuel savings, clinker grinding costs were substantially reduced. In many

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By | November 28th, 2016|Categories: Equipment|Tags: , , |Comments Off on Clinker Cooler


In the metallurgical treatment of uranium ores large tonnages must be handled. Many ores are low grade so it becomes necessary to employ systems which can be operated on a continuous basis at low cost. A vast amount of research has gone into the development of suitable processes. One is solvent extraction, which has proven extremely efficient and simple in operation. Diligent work has gone into selection of the proper solvents. The solvent is a high flash point kerosene with 10% by volume of Di-2-ethyl hexyl phosphoric acid and 2.5% primary decyl alcohol or tributyl

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By | November 24th, 2016|Categories: Flowsheets & Flowcharts|Tags: |Comments Off on URANIUM METALLURGY

Uranium Extraction Process

The plant was originally designed to treat uranium ores with low lime-high vanadium content from the Lukachukai Mountains. The process utilized is known as the “Acid Cure” and had been developed for the most part by the AEC to increase recovery of vanadium values. Briefly, it involved “pugging” the ore with 10% water and 400-500 lbs. of concentrated sulfuric acid. The product was allowed to cure for six or more hours to convert the uranium and vanadium values into water soluble salts. Acid consumption and

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By | November 24th, 2016|Categories: Concentrator Manuals/Procedures, Flowsheets & Flowcharts|Tags: |Comments Off on Uranium Extraction Process


A great deal of interest has developed in the new portable sampling plant recently designed by Engineers. The plant is substantially as shown but may be adapted easily to the specific needs of the user at the factory or, because of the versatile design, in the field. The functions of crushing, grinding and sampling are carried out in this readily portable unit right at the site, since it is powered by means of a gas engine. In those cases where the user has means for transporting, the plant is available separate from the trailer.

We stand always ready to assist you

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By | November 24th, 2016|Categories: Equipment|Comments Off on PORTABLE SAMPLING PLANT

Carlin Style Mineralisation Deposit Examples


goldstrike deposit Carlin Style Mineralisation Deposit Examples at Goldstrike

This section on Carlin Style Mineralisation Deposit Examples will give you a quick run through of a couple of actual Carlin deposits to give an idea of their characteristics; we will begin with Barrick’s goldstrike deposit, it’s in the north of the Carlin trend. Gold strike is the mother and father of Carlin deposits and is responsible for Barrick being the biggest gold producer in the world today. As you can see the geology exhibits

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By | November 24th, 2016|Categories: Geology, Gold Extraction|0 Comments

Uranium Poem

Born out of grim necessity In the horror and agony of Hiroshima, Nagasaki, The Nuclear Age grew from swaddling clothes Into manhood almost overnight. There was a question mark over the future From the first hour the birth was announced Today, eleven years have passed Since that first blinding flash of light Wrote upon the pages of history Another chapter in Man’s conquest of nature. There is still a question mark. It is still

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By | November 24th, 2016|Categories: Mining Infographics|Comments Off on Uranium Poem
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