Blogs
California Geology Facts
Each of California‘s regions is defined by the major geology facts and features within that region. Some of the features of the California landscape formed as the result of tectonic processes that took place deep beneath the surface. Wind, water, ice, and other agents of erosion at die surface carved other features of the landscape and maps. Geologic Processes Inside Earth
Reasons For Mining
Ever wondered why we need to mine the earth? You need reasons for mining all this stuff? Wallboard – gypsum, clay, perlite, vermiculite, aluminum hydrate, borates Paint – titanium dioxide, kaolin, calcium carbonate, mica, silica, wollastonite Glass – silica, quartz, lead, titanium, sodium carbonate Door Knob – nickel Speakers – aluminum, cobalt, silver, silica, iron, titanium, graphite, mica, carbon, strontium, neodymium
What It Takes To Make iPhones
Just like money does not grow on trees, iPhone making takes Tonnes of Efforts and tonnes of metals. Here is the answer to What It Takes To Make iPhones? The average mortal never thinks of this but here it is “The Not So Inconvenient Truth” in the eyes of a Drone flying over the largest copper miner in the world’s El Teniente
List Mines in Peru
Here is a List (3) of Mines in Peru. It is actually a list of process plants. List Map of Mines in Peru
Metallurgical Concentrator Safety A-Z
The information that is in this, our last and most important, chapter deals with safety. To open this chapter I would like to make a few general statements concerning work habits, safety awareness and safety programs. The operation of a concentrator plant can be very dangerous or it can be very safe. How it is going to be depends upon
Mill Operator Crane Operation Safety
Mill Operator Crane Operation Safety: Both to you, anyone helping you, and the equipment that you are working around. When you are learning this job, some of the skills that you should be developing are, how to stop a swinging load, accuracy when moving your load into position, and finally safety awareness. The parts to a bridge crane are very
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 obtained in-plant. Flotation circuit sampling
Concentrator Troubleshooting -From Grinding to Flotation
Let me sum this up in two or three sentences. Start solving a problem at the effect. Reduce the effect as much as possible when it is losing money or making a mess. Check all of your mechanical and operational variables to discover the cause. You know what the equipment and process is supposed to do, you also know how
Troubleshooting an Overflowing Pump box
Here is an example, if there is a pump box over flowing. The effect is that the pump is overflowing. What we want to know is, what is the cause? Mechanical failure? Electrical? Perhaps an Airlock? First, go to the pump itself, remember the purpose of a pump is to deliver slurry from one point to another, so be sure
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 good or the correctly sized
Concentrators Sample Collection -What, When, Where and Why
What is the purpose of SAMPLING? Where do you need to collect samples in a plant for good operation and correct metallurgical accounting? Samples give the operating staff and crew all of the information that is necessary to operate the concentrator plant. Samples may show when equipment is almost worn out, when circuit performance is down and also indicate future
Handheld XRF Spectrometer
Handheld XRF spectrometers are a fast, accurate, and portable tool that can be used for a variety of tasks in the mining industry. What is a portable spectrometer and how do you use one? A handheld “XRF gun” is an x-ray instrument used for chemical analyses. Shaped and sized similarly to a barcode scanner, the device is held in one
Gravity Gold Recovery, Flotation & Carbon-in-Leach Cyanidation
To further evaluate the process of Gold Recovery by Gravity, Flotation and Carbon-in-Leach Cyanidation, some cleaner tests with regrind of the bulk rougher concentrate, were conducted. Rougher flotation concentrates were reground to improve leach kinetics. The regrind sizes for these range of tests were not optimized. Regrind discharge sizes of between 24 to 64µm P80 were obtained. The gold grade of the combined
How a Grate Discharge Ball Mill Works
Table of ContentsDischarge GratesPulp Lifters Here I try to explain how ground slurry is discharged from a grate ball mill (or SAG). How it works is, the slurry flows across the grate as it would a screen panel. On the other side of the grate/screens are veins like a pump impeller. As the mill turns/rotates the slurry is “pumped” out
Variables for Concentrate Humidity: Dryer Heat and Feed Cake Moisture
This last set of operating variables is very basic. There are only two, the PERCENTAGE of MOISTURE that is in the concentrate as it goes into the drier, (your filter cake humidity) and the TEMPERATURE that the drier is heated to. It is very evident that the wetter the concentrate the longer that it will take to dry. The RETENTION
Filtrate Pump & Vacuum Filter Pumps
Table of ContentsContinuous CentrifugeVacuum Equipment – Filter and Utility The last equipment that I want to talk about that is part of the filtering system is the FILTRATE PUMP and the VACUUM PUMP. The filtrate pump is the pump that removes the water that is filtered out of the concentrate. It works with the filter and vacuum pump in
Rotary Filter Internal Piping & Manifold
This insides (Internal Piping) of a Disk or Drum Rotary Filter and its Manifold are much similar to each other. Each of the sectors are attached to what is known as the MANIFOLD. The purpose of the manifold is provide a series of passages for both the vacuum and the air. Each passage services one sector from each one of the discs
Slurry Filtering & Concentrate Filtration
Table of ContentsDRUM FILTERSPAN FILTERSDISC FILTERS The purpose of a vacuum filter is “Slurry Filtering” and therefore to remove more of the water from the concentrate, this “Concentrate Filtration” is accomplished by using a vacuum. Again for your understanding of the method you will have to know something about the design of a filtering system and of course the filter
China Currency War
Is this a China Currency War on US or China on all others? What’s China’s End-Game: China is perhaps looking to have the Renminbi ultimately being managed against a basket of currencies as opposed to just being managed against just the USD. This could provide for more volatility going forward between the Renminbi vs. the USD.
Thickener Safety
The last thing that I would like to mention about thickeners is to do with their safety. In some plants fire a worker who wears his hard hat or takes foreign objects onto the catwalks above the thickeners. The reason is that if, by accident, his hard hat ended up in the thickener that thickener may be down for days
Thickener Torque -Rakes & Drive
A little earlier I talked about the rakes of the thickener, these are long arms that extend off of the bottom of the DRIVE SHAFT. As the shaft turns the rakes will sweep the entire bed of the thickener thereby applied Torque. Each rake arm is higher at its far end than it is where it joins the drive shaft.