Blog of Mineral Processing (Metallurgy) Articles

Ball Mill Working Principle & Operation

In all ore dressing and milling Operations, including flotation, cyanidation, gravity concentration, and amalgamation, the Working Principle is to crush and grind, often with rob mill & ball mills, the ore in order to liberate the minerals. In the chemical and process industries, grinding is an important

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By | 2017-04-27T23:56:02+00:00 February 13th, 2017|Categories: Ball Mills|Comments Off on Ball Mill Working Principle & Operation

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

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By | 2017-03-19T08:29:08+00:00 December 2nd, 2016|Categories: Ball Mills, Equipment|Comments Off on Ball Mills

Cone Crusher

cone crusher 1Here 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

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By | 2017-04-27T23:56:20+00:00 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.

LOWER CRUSHING COSTS

As you compare this jaw crusher

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By | 2017-04-28T08:02:53+00:00 October 18th, 2016|Categories: Crushing & Screening, Equipment|Comments Off on Jaw Crusher

Grinding Mills: Ball Mill & Rod Mill Design & Parts

Common types of grinding mills include Ball Mills and Rod Mills. This includes all rotating mills with heavy grinding media loads.  This article focuses on ball and rod mills excluding SAG and AG mills. Although their concepts are very similar, they are not discussed here.

Photographs of a glass ended laboratory

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By | 2017-03-17T19:22:30+00:00 July 10th, 2016|Categories: Ball Mills, Equipment, Grinding, Mill Liners, Rod Mills, Tools of a Metallurgist|Tags: , , , , |Comments Off on Grinding Mills: Ball Mill & Rod Mill Design & Parts

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

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By | 2017-03-31T09:57:37+00:00 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.
  • How Metallic Minerals Affect Silver and Gold Precipitation

Gold, as it occurs in Nature, is never pure. Occasionally the amount of alloying metal

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By | 2017-03-19T03:00:40+00:00 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

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By | 2017-03-31T10:00:51+00:00 March 8th, 2016|Categories: Flowsheets & Flowcharts|Tags: , , |Comments Off on Mineral Processing Flowsheets

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 currents

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By | 2017-05-13T12:35:04+00:00 May 13th, 2017|Categories: Various|Comments Off on Eddy Current Testing

Maintenance Policy & Procedure

Maintenance Policy Area Level 1 (basic) Level 2 (controlling) Level 3 (improving) Level 4 (best)2.1 MAINTENANCE MANAGEMENT LEADERSHIP                                           2.1.1 Maintenance Mission No mission Mission developed and understood by management Mission developed and understood by management & supervision Mission developed, understood and articulated by management, supervision, maintenance team personnel & support personnel2.1.2 Maintenance Vision No vision Vision developed and understood by management Vision developed and understood by management & supervision Vision developed, understood and articulated by management, supervision, maintenance team personnel & support personnel2.1.3 Maintenance Process Model Do functions covered Plan and Do functions covered Plan, Do and Check functions covered All Plan, Do, Check, Adjust functions fully covered for the site maintenance needs2.1.4 Responsibility and Accountability Informal definition of roles & responsibilities Formal definition of roles & responsibilities covering plan & do functions. Understood by management Formal definition of roles & responsibilities covering plan, do & check functions. Understood by management & supervision Formal definition of roles & responsibilities covering plan, do, check and adjust functions.  Understood by management, supervision & all site personnel2.1.5 Site Maintenance Strategy <td ….Read more

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By | 2017-04-06T09:53:05+00:00 April 6th, 2017|Categories: Maintenance & Mechanical|Comments Off on Maintenance Policy & Procedure

Cyanide Destruction Hypochlorite / Chlorine

In the Cyanide Destruction by Hypochlorite reaction, the pH has a strong inverse effect on the ORP. Thus, wastewater treatment facilities must closely control the pH to achieve consistent ORP control, especially if they use hypochlorite as the oxidizing agent. Adding hypochlorite raises the pH, which, if unchecked, lowers the ORP. calling for additional

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By | 2017-03-19T08:37:04+00:00 March 13th, 2017|Categories: Cyanide Leaching, Reagents and Chemicals|Comments Off on Cyanide Destruction Hypochlorite / Chlorine

Beehive Oven

beehive coke oven Beehive Oven

During the latter half of the nineteenth century and the early years of the twentieth, the major percentage of metallurgical coke produced in the United States came from beehive ovens. It was not until 1893 that the first battery of by-product ovens came into operation (at Syracuse, N. Y.), and only in 1919 did

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By | 2017-04-11T09:47:30+00:00 March 12th, 2017|Categories: Various|Comments Off on Beehive Oven

Solubility Of Gold In Mercury

solubility of gold in mercuryAlthough three rather extensive researches on the system gold-mercury have been published within the last ten years, the disagreement in the various results is most remarkable, particularly at lower temperatures. Quite recently rather precise results on the system silver-mercury, using a new type of solubility tube, have been published by Sunier

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By | 2017-03-19T08:37:09+00:00 February 25th, 2017|Categories: Gravity Concentration|Comments Off on Solubility Of Gold In Mercury

Ammolite

ammolite

Ammonite is an iridescent gem formed within an ancient marine fossil for which it was named—ammonite. Originally discovered by the Blackfoot Indians, ammolite is mined only in Southern Alberta, Canada. Most ammolite is assembled into doublets

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By | 2017-03-19T08:36:30+00:00 February 25th, 2017|Categories: Geology, Mineralogy|Comments Off on Ammolite

Cone Crusher Parts

cone crusher parts http://www.excelfoundry.com/replacement-components/cone-crushers/hp/

1. Feed Hopper
2. Adjustment Cap
3. Bowl
4. Bowl Liner
5. Hardware
6. Bowl Adapter Ring
7. Mainframe Seat Liner
8. Hyd. Drive Adjustment
9. Clamping Cylinder
10. Tramp Release Cylinder
11. Head Ball
12. Mantle
13. Head
14. Upper Head Bushing
15. T-Seal
16. Lower Head Bushing
17. Mainframe Liner
18. Arm Guard
19. U-Seal
20. Thrust Washer
21. Mainshaft
22. Mainframe

23. Feed Plate
24. Screw
25. Torch Ring
26. Locking Bolt
27. Dust Shell
28. Clamp Ring
29. Adjustment Ring
30. Mainshaft Pin
31. Pin
32. Socket Liner
33. Socket
34. Eccentric
35. Eccentric Bushing
36. Counterweight
37. Counterweight Guard
38. Gear
39. Thrust Bearing
40. Countershaft Box
41. Countershaft Box Guard
42. Oil Finger Cover
43. Oil Finger
44. Countershaft Bushing
45. Countershaft
46. Pinion

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By | 2017-03-19T08:36:20+00:00 February 19th, 2017|Categories: Crushing & Screening|Comments Off on Cone Crusher Parts

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BUY Laboratory & Small Plant Process Equipment

We have all the laboratory and plant equipment you need to test or build/operate your plant.

ENTER our Mining Equipment' Store

We Sell EQUIPMENT for all types of Mineral Treatment PROCESSES and Laboratory Testing needs

Need ENGINEERING Services or Plant TROUBLESHOOTING?

We can IMPROVE ALL PLANTS / Mineral Processing Engineering & LABORATORY Ore Testing

911Metallurgy Engineering

Contact us for process engineering, metallurgical investigations, plant optimization, plant troubleshooting, needs. WE “FIX” METALLURGY.