Blogs
3 Product Recovery Calculation & Formula
In this metallurgical (material/MatBal balance) involving 2 concentrates or 3 products, we have this example: It is decided to take a copper tail (zinc feed) sample in order to provide a check on the results calculated in the previous example. The sample (CT) assayed 0.55% Cu (c5) and 20.9% Zn (z5), respectively. The check weights of the copper and zinc
3 Product Recovery Formula: Material Balancing & Metallurgical Accounting
Frequently, a concentrator will mill a complex ore requiring the production of two separate concentrates, each of which is enriched in a different metal or valuable mineral, plus a final tailing acceptably low in both constituents. Formulas have been developed which use the feed tonnage and assays of the two recovered values to obtain the ratios of concentration, the weights
Metallurgical Accounting & Material Balancing: Two Product Formula
Cytec Section 11.6 near page 240 Wills’ Mineral Processing Technology, Seventh Edition: An Introduction to the Practical Aspects of Ore Treatment and Mineral Recovery[/fusion_builder_column][/fusion_builder_row][/fusion_builder_container]
Hydrocyclone Design & Sizing Parameters – Calculations & Equations
Here is a hydrocyclone sizing calculator with immediate access to all design equations needed for your hydrocyclone design calculation in an online XLS spreadsheet format. Based on first principles of hydrocyclone theory and equations, this quasi design software lets you enter all cyclone design parameters such as cut size, D50, D60 (efficiency calculation), graphs your results. Calculate diameter of hydrocyclone as well as apex
Eliminating Copper from Gold Ore
When reviewing Methods of Eliminating Copper from Gold Ores we see that several methods have been suggested to eliminate copper from ores prior to cyanidation. Preliminary extraction of the copper with sulphuric or sulphurous acids may be applicable to ores containing oxidized copper minerals such as malachite, azurite and chrysocolla but these acids have but little effect on sulphide copper minerals,
Mineral Processing Pilot Plant Trials
Personnel from engineering firms frequently use data from pilot-plant operations for designing a full- scale plant. Data from pilot- plant testing may be supplied by the client, bv independent research laboratories, or. in other cases, by the engineering people involved in the pilot-plant operation to develop their own engineering, metallurgical, mineral processing and chemical data. It is obvious that the
OVERENGINEERING
Recently we were talking with the manager of one of the larger copper concentrators in Arizona when he took off on the subject of overengineering and standardization and engineers who practiced the former but had no acquaintance with the latter. The particular reason for his wrath at that moment was $70,000 worth of conveyor head. tail, and other pulleys of
Calculate Flotation Cell Capacities Volume vs Retention Time
This online calculator helps you on how to calculate or estimate either what size/volume flotation cell and well as conditioning tank + how many flotation cells your bank needs to accommodate the retention time you need. Design Retention time is usually obtained from laboratory testwork and proper use of Lab-to-Plant flotation scale-up factors. An Example of flotation cell capacity and circuit
Antique Jaw Stone Breaker
TON RECIPROCATED Antique JAW STONE BREAKER: Curved by owners in installing and operating individual pumping plants. The new mechanical filtration or rapid sand filter plant for Baltimore comprises 32 filters each of 1440 square feet area and a capacity of 4,000,000 gallons daily. The turbidity of the water led to the adoption of this system in preference to the slow sand
Flotation Cyanidation Amalgamation Equipment
With the demand for the base and precious metal steadily upward Denver “Sub-A” (Fahrenwald) Flotation cells are in greater demand than ever before. Leading producers know that Denver Cells are the lowest cost units per ton of ore treated. Denver mineral jigs save the free mineral values from the ball mill classifier circuit, without dilution. Recoveries as high as 70%
Flotation and Gravity for Better Recovery
HIGHER RECOVERIES ALWAYS RESULT when freed mineral is removed from the fine grinding circuit. Here are the two profit making machines which have today made this step standard practice in milling plants the world over. The Denver unit Flotation cell has definite place in every flotation plant where lead, copper, zinc or other sulphides are concentrated. On gold ores the
AGITAIR Flotation Machine
Scientific separation and recovery of the values in strategic metals is AGITAIR’s flotation machines’ vital contribution to metal production worldwide. By improving results and lowering costs, it has become a factor in conservation and profit building that leading metallurgists have recognized. These are well authenticated facts demonstrated daily in hundreds of mills-large and small-throughout America and in foreign countries. Intense aeration
Denver “Sub-A” Flotation Machine
No application is too large, too difficult, or too complex for this Denver “Sub-A” flotation Machine. Now ONE Denver “Sub-A” will handle the pulp from several large grinding circuits, thus simplifying the flotation operation. This Denver “Sub-A” will handle 3,000 tons of dry ore at 40% solids down to 1,000 tons at 15% solids. The volume of each cell is
Ball Mill Circulating Load
Table of ContentsCirculating Load Versus Grinding Mill ThroughputOver Grinding Calculating a grinding circuit’s circulating loads based on Screen Analysis of its slurries. Compared to %Solids or Density based Circulating load equations, a more precise method of determining grinding circuit tonnages uses the screen size distributions of the pulps instead of the dilution ratios. Pulp samples collected around the ball mill or rod
Antique Rock Crushers
Primary stone: Antique Rock Crushers AND rock breaking machines – if we may so designate those machines which are employed to reduce large masses of rock to sizes such as can be further dealt with by other machines – may be divided into two headings, i.e., (a) those which work largely used in those portions of machines which have to
Gravity Recoverable Gold (GRG) Test
The GRG test is used to determine the theoretical maximum amount of gold that can be recovered from a sample. The testing scheme consists of three sequential liberation and recovery stages , the progressive size reduction allowing for the determination of the precious metal recovery as liberated without over-grinding and smearing coarse precious metal particles. A Gravity Recoverable Gold Test (GRG)
Mineral Processing Equations EQ
A Metallurgist or more correctly a Mineral Processing Engineer will often need to use these “common” Formulas & Equations for Process evaluation and calculations: Circulating load based on pulp density *** Circulating load based on screen analysis *** Flotation Cell & Conditioner Capacities *** Two Product Formula *** Three Product (bimetallic) Formula (Part 1) ***needs verify Three Product (bimetallic) Formula (Part 2) *** Ore specific gravity *** Pulp
Copper Flotation Recovery Rates of Oxidized Ores
A crude display of how oxide content (copper) affects the overall recovery of any given ores. Below are flotation recovery responses of 5 different ores from North and South America. In all cases, the recovery VS %Oxide relationship is obvious. Samples vary from 0.4% to 1.6% total copper. The heavy oxide chart (4th one down) being the 1.6% Copper. Notice
Table of Bond Abrasion Index for Varied Minerals-Materials
The Bond Abrasion Test determines the Abrasion Index, which is used to determine steel media and liner wear in crushers, rod mills, and ball mills. Bond developed the following correlations based on the wear rate in pounds of metal wear/kWh of energy used in the comminution process. Determining rock abrasivity in the laboratory ref
Bond Abrasion Index VS Mohs Mineral Hardness Scale
Here is an illustration of the typical relationship between the Mohs Mineral Hardness Scale and their corresponding Bond Abrasion Index. ref
How Abrasion Index affects Wear Rates
What is the relationship between Abrasion Index affects Wear Rates of steel ball mill and rod mill liners as well as the wear life or consumption of grinding balls or rods. A little bit of data on crusher (gyratory and roll) liner wear life in also shown. Rubber wear data.