Effect of Flotation Density on Grade and Recovery
In an effort to test the Effect of Flotation Cell Size in Laboratory, I ended up with a test for the effect of flotation density on grade and recovery. Therefore, I here present is a Laboratory experiment that counters the reality of a full scale industrial flotation plant. By “counters the reality” I mean, larger commercial […]
Wemco Fagergren Flotation Machine
William Fagergren invented the Fagergren or WEMCO flotation cell. Fagergren licensed all but his earliest U.S. patent to the American Cyanamid Co. of New York. American Cyanamid actively promoted the Fagergren machine, and issued sublicenses to Sumitomo Heavy Industries in 1937. for manufacture, distribution, and sales to applications besides cement; to FLSmidth in 1938. for manufacture, […]
Small Filter Press -Cetco for Sale
For Sale a CETCO 6 Cu.Ft. 800mm BP Series Press (Ring Press) Can be easily expanded to 10 cu ft with CGR optional plates/cloths. Built in 2008 (was only used in a small precious metals proof of concept pilot plant… No production operations) Very Clean Filter Press at a good price.
Flotation Kinetic Rates & RTD Analysis Evaluation
Every mill operator, metallurgist or not, needs to understand the Flotation Kinetics and Flotation Rates taking place within his plant’s circuit. A simple case study of a very basic process flowsheet (ball mill grinding to conditioning, followed by rougher/scavenger and 2 stage froth flotation cleaning). This very basic and practical study of Froth Flotation Kinetics […]
Zinc Sphalerite Activation & Conditioning Time Effect of CuSO4 Copper Sulphate
The most effective, and really only way for recovery of zinc sphalerite by froth flotation is by first activating the mineral with CuSO4 (Copper Sulphate) and allowing some conditioning time. How much time is optimum for effective zinc activation and good froth flotation? Obviously the answer to that is dependent on the test sample’s mineralogy, […]
Pilot Plant Flotation Cells & Machines
PILOT PLANT FLOTATION MACHINES of the DENVER “SUB-A” Type Cells The No. 5, No. 7 and No. 8 Denver “Sub-A” Flotation Machines are relatively small and designed for continuous service in laboratory, pilot plants and small scale commercial plants. From mini to small scale flotation cells for piloting any mineral types, from copper to zinc, lead […]
Small Flotation Machines/Cells
For Sale: QPEC No. 5 Flotation Machine (Small 0.3 cubic feet per cell), “cell to cell” construction as generally described in brochure QPEC F-001. All wetted steel is mild steel. Includes bank cell design with tank with adjustable height weir between the cells and weir box with adjustable height level control and adjustable sand relief […]
Stage Addition of Flotation Reagents
In Laboratory, the quality of the concentrate floated in the 1st minute of rougher improves if reagent/collector is stage-added. Stage-adding collector involves adding ½ the total dosage to the 1st cell + ¼ to the 2nd and ¼ to the 3rd or 4th cell. It can be expected a similar metallurgical behavior could be […]
Basic Slurry Sampling Method
The first rule of sampling technique is the sample must be REPRESENTATIVE. What this means is that the sample must be a true indication of the content of material being sampled. To accomplish the most basics of all slurry sampling method, this the operator has a few guidelines to follow. First, you need get a […]
Basic Flotation Circuit Design
Let’s, proceed to Basic Flotation CIRCUIT DESIGN. To understand flotation it is necessary to learn some new terminology. To do this let’s look at a simple schematic of the circuit we were just working with. Let’s start with the CLASSIFIER OVERFLOW, once the classifier is finished with it enters the CONDITIONER TANK. This tank […]