Blogs
Flotation: From Alchemy & Art to Physics and Science
In a recent reminiscence my friend Ben Stanley Revett has recorded how he bet “a bottle of bubbles” with that peripatetic philosopher Thomas F. Criley, the partner of Carrie Jane Everson in an oil process of concentration whereby the valuable sulphides were made to float above the worthless gangue in a pulp of crushed ore. Mr. Revett says that he
Crushing and Crusher Research Articles
The art of crushing A Single Value Chain Process 2 Crushing Principles of Mechanical Getting Control Scott Drilling Applications-2 Part A The Chemical Crusher Drilling and Blasting Drill Time Drill Cost Mine Quarry Planning Lean Thinking Applied (2) Blast management Environmental impact Liability and Risk Associated With Quarry Operations The Chemical Crusher Drilling and Blasting Drilling Applications Drilling 2 Chemical
Sequential Copper–Lead–Zinc Flotation
To improve the selectivity between copper and lead, a sequential copper-lead-zinc rougher circuit was tested. Each of the rougher circuits had a dedicated regrind and cleaner circuit. The advantages of the sequential circuits are that the levels of selectivity can be increased, particularly for copper and lead. With this process, copper was recovered first with MBS depression of lead, zinc and pyrite. Lead was
Gold Refining for Gold Extraction
Table of ContentsHazardous ChemicalThe sample gold material Gold refining AR Dissolving the gold with acid. Increase the Percentage of gold >99 %Gold water filtrations are 2 types.EquipmentCompareGold Precipitated with sodium sulfite Ratio chemical Electric gold melting furnace Portable Torch Cutting Welding Vacuum filter kit with hand pump Magnetic stirrer pH and Thermometer Gas mask Chemical Protective Clothing Glove Chemical Boots Chemical goggles
Gold Electrolysis Process & Gold Recovery
Table of ContentsSample How to extract gold from the Gold Pin connectorHow to gold extraction from solution use electricityHow to separate gold from metal Electric gold melting furnace Portable Torch Cutting Welding Vacuum filter kit with hand pump Magnetic stirrer pH and Thermometer Gas mask
404 Basic Mineral Processing Terms
ABC: Assay Based Controls are changes made to regulatory setpoints that are biased on the level or changes in the level of the valuable metal being recovered. ABC Circuit: A two-stage grinding circuit composed of an autogenous mill, a ball mill and a crusher. Abrasion: Wearing away by rubbing or friction. Acicular: Having the shape of a needle Activators:
High Capacity Crusher
When the non-choking feature was being applied to existing crushers of the gyratory type, it was found that in several crushing machines, the attendant reduction in receiving opening could be partially offset by sloping the straight portion of the concaves at a wider angle than that for which the top shell was originally designed, because some of these older machines
Ore Hardness Testing -SAG Mill Tonnage Estimation Method
For design purposes, you need an estimation or prediction of your SAG Mill’s tonnage; well, there are 3 ways to generate good rock “ore” hardness testing data for SAG and ball mill circuit grindability from half drill core. We can abbreviate the discussion by saying there are three “faiths” of grinding, and there are small-scale tests suitable for all three of
Determine Total Cyanide in Solution
The test outlined is a simple and rapid method for the determination of total cyanide in plant solutions, providing significant amounts of iron cyanides are not present. Copper, nickel, zinc, and iron cyanides build up in plant cyanide solutions as a result of the usual gold milling practice of recycling solutions . Since these metals are present in the plant
Clarkson Liquid Reagent Feeders
Table of ContentsLiquid Reagent Distribution SystemReagent Distributor (Lewers Type) Original Clarkson Feeder Clarkson Feeders Clarkson Reagent Feeder The Clarkson Company had once designed a combination drum and scoop type liquid reagent feeder, the largest size of which has a capacity rating of 2000 tons of dry ore per 24 hr. This will enable the feeder to take a large tonnage of
Difference Between Single & Double Toggle Jaw Crusher
A double toggle jaw crusher is much larger, heavier, more moving parts and lower throughput than modern single toggle jaw crushers. The lower throughput statement is a bit misleading because it’s partially attributed to the type of bearings they have versus modern crushers, so if one was to upgrade the bearings, throughput could be closer to that of a modern
Arsenic and Antimony Sulphide Minerals in Cyanidation
The successful cyanidation of gold ores containing appreciable amounts of arsenic or antimony sulphide minerals such as orpiment, realgar, and stibnite is usually difficult or even impossible. Extractions are low and the solutions soon become ‘foul.’ The gold in such ores could be free and uncoated, and no trouble in dissolving it in clean cyanide solutions would be expected. However,
Crusher Efficiency Calculations
Table of ContentsCrushing & Screening Plant Assessment ExampleCapacities and Horsepower of Jaw Crushers (tons/hr)Typical Capacities of Twin-Roll Crushers (tons/hr)Screen Analysis of Product from Jaw Crusher, Percent Passing Screen Opening The following example demonstrates a method of selecting the components of an aggregate plant. Good component efficiency and part performance pre-evaluation is essential to a solid design. The aggregate production requires the consideration
How Copper Affects Cyanidation & Leaching
Table of ContentsCopper Cyanogen ComplexesAmmonium Copper Cyanogen Complexes Many precious metal ores contain copper minerals in various amounts. These copper minerals dissolve in cyanide solutions to a greater or lesser degree depending on the particular copper mineral or minerals present, their fineness, and the dissolving effect of the cyanide solutions. In the process of dissolution the copper combines with, or
Mineral Comminution Circuits: Their Operation and Optimisation
Start following 911Metallurgy’s Linkedin page to get a free (my used) copy of: Mineral Comminution Circuits: Their Operation and Optimisation I will select a winner from All the Company’s Followers on September 17th 2016 and announce the winner on 911Metallurgy’s Linkedin page Contact via Linkedin will be attempted with the winner and if not reply is obtained by September 21th