J.A. Dos Santos article published in PROCESS Worldwide
Marietta, Ga. – Though originally composed quite some time ago, The Cost/Value of High Angle Conveying has been a living publication that has evolved over time, as has the subject.
Sandwich Belt High Angle Conveying was developed as a product of eveolution, rationalizing conventional conveyor technology into a means to elevate materials using all standard conveying equipment. The value of this technology has long been recognized, and it is elaborated upon in the article linked here.
Click on the following link for the full article, at Process Worldwide.High Angle Conveying: The Cost and Value of High Angle Conveying – 2012
Dos Santos International To Exhibit At MINExpo 2012
Marietta, Ga. – After tremendous success at Coal Prep 2012, Dos Santos International is pleased to announce the DSI booth will travel to fabulous Las Vegas for the MINExpo 2012 show from September 24-26 at the Las Vegas Convention Center.
Dos Santos International, LLC is the world’s foremost authority on high angle conveyor applications and design of sandwich belt type high angle conveyors. They will display a working model of the flagship conveyor system, the DSI Snake Sandwich High Angle Conveyor.
The DSI Snake is the most technologically advanced high angle and vertical conveyor system for high tonnage requirements in the harshest environments. Founder of Dos Santos International and inventor of the DSI Snake, Joseph Dos Santos will be on hand throughout the week to answer questions about this reliable and economical elevating system.
Also featured will be the DSI ExConTec or Expanded Conveyor Technology software and real world installations that are embodiments of the technology. DSI ExConTec was developed through the extensive experience of DSI engineers. This in-house software utilizes virtual simulations with derived load equivalents that account for all conveyor loads, applied and induced, not just gravitational. This powerful tool is used to troubleshoot and upgrade existing complex systems as well to build optimal, reliable new systems.
DSI’s expertise spans a wide range of materials handling systems and equipment including high angle conveyors, high powered, high capacity, high lift slope conveyors and long overland conveyors utilizing the very latest technology. Dos Santos International offers over 30 years experience in bulk materials handling and is headquartered in Marietta, Ga.
Be sure to come see Dos Santos International at MINExpo 2012, Las Vegas, September 24-26, booth 27081 South Hall.
Dos Santos Goes From Diamonds to Gold
Marietta, GA -- In cooperation with M3 Engineering of Tuscon, AZ, Dos Santos International LLC has been awarded a contract for an overland conveyor system at Goldcorp’s Los Filos Project. The Los Filos gold mining project is located in the Nukay mining district of central Guerrero State in southern Mexico, and promises to be one of the largest open-pit mines in the country.
Los Filos is a heap leach operation. The ore size is reduced at the crushing plant and then it is hauled to the valley where it is stacked on engineered pads. A chemical solution is sprayed onto the ore, which extracts and absorbs the gold as it trickles through the ore. To regulate seepage rate, an agglomerate (cement) is mixed into the ore for optimal ore exposure to the solution. Ultimately, the solution is directed to the plant where the gold is precipitated out.
A previous system conveyed the ore from the crushing plant to the leach pads via a glory hole ore pass and an underground conveyor, through the hill. An agglomeration drum mixed in the agglomerate before final delivery to the leach pads.
The conveying system experienced material flow problems right from the start, especially during heavy rains. The sticky ore tended to plug up the ore pass. Geological instability ultimately collapsed the ore pass, putting the transport system out of service only four months into its operation.
Against this background M3 Engineering was tasked with developing an alternate conveying route quickly since all haulage was now by truck and very expensive. The logical, most direct and economical path was over the same hill (rather than under). The path required a down-hill high angle conveyor. Thus, Dos Santos International was approached about their DSI Sandwich Belt High Angle Conveyor. Being the best solution, DSI was awarded the contract in March 2009 for a downhill system which they dubbed the DSI G.P.S. (Gently Pressed Sandwich) High Angle Conveyor.
Concerns with geological instability remained, especially along the path of the DSI G.P.S.. Further geological scrutiny led to abandoning this path altogether, thus abandoning the DSI G.P.S. as well.
M3 was again tasked with developing an alternate conveying path. This time a conventional conveyor system was developed, following the already developed truck ramps. Dos Santos International again submitted their proposal for the project, now an overland conveyor system. The project was awarded to DSI May 19, 2009. Engineering is now well underway.
The DSI expertise proved particularly advantageous on this project. The original ten-conveyor-flight system has been rationalized to only seven flights by amalgamating with horizontal curves. Additionally, the third conveyor flight is especially engineered to accomplish the agglomeration by mixing through five intermediate tripped transfers. The en route agglomeration, conceived by Goldcorp, results in substantial savings by eliminating the need for the additional agglomerating drum.
The overland conveying path is predominantly downhill. While this presents the normal controlled starting and stopping problems, it also presents great savings opportunities. The downhill flights are decisively regenerative. Additionally, the drive motors, now generators, will feed back power into the grid which powers the other mine equipment. These carefully engineered conveyors will be equipped with variable frequency drives to ensure operations at maximum efficiency. This is another example of DSI’s commitment to “green” conveying.
In 2008, Dos Santos International installed 5 of their acclaimed DSI Snake Sandwich Belt Conveyors to convey kimberlite (diamonds) for the DeBeer’s company. Although there have been several other notable installations since these, this current project has prompted DSI to say they’ve gone from diamonds to gold.
Dos Santos International
Bulking Up Down-Under
The partnership of Dos Santos International and Cortex Resources will soon commission Australia’s first DSI Snake Sandwich High-Angle Ship Loader. Dos Santos International (DSI) of Winfield, Alabama, USA is the acclaimed world leader in the sandwich belt high angle conveyor technology. Cortex Resources of Hawthorn, Victoria, Australia, is a leader in the materials handling market of Australia and Southeast Asia, with special strength in the dock and yard heavy mobile equipment sector. The combined strengths of the DSI/Cortex partnership have produced the revolutionary DSI Snake Ship Loader and successfully tendered the design to Flinders Ports/Toll Group joint venture for operation at the Port of Adelaide on Australia’s southern coast.
Australia’s first Snake Ship Loader will elevate a variety of high value ores from trucks to ship. The data table below summarizes the design parameters while the figure depicts the arrangement. Materials for export are trucked to the dock and dumped onto a special trap loader type feeder. The ore is fed continuously and uniformly onto the mobile snake’s receiving chute. The Snake Ship Loader elevates the bulk over the ship’s deck to the hatch where it is discharged into the ship’s hold. At the Snake’s discharge, a special telescoping chute, with rotating, pivoting spoon, facilitates even and complete filling of the holds.
The mobile Snake is carried on a tripod of twin motorized rubber tires. Each set of twin tires is mounted at a vertical kingpin and can rotate 360 degrees about that vertical axis. Thus, without repositioning, the Snake can set up to travel in any direction. With the tail tires fixed, the front tires can be oriented and traveled for a slewing motion.
The unit is on a fast track scheduled for a mid-November (2006) start-up. This first DSI Snake Ship Loader for Australia is part of a growing list of DSI Snakes worldwide. It will certainly set the pace for many more high volume high-angle installations at materials handling docks and yards throughout the world.
2006 has been a very successful year for DSI Snakes so far. The Ship Loader is just one of seven Snake units currently in various stages of production. All of these orders were from repeat customers who were clearly pleased with the performance of their initial DSI Snake installations.
Twin Snake units are now installed at diamond mine facilities in Canada’s Northwest Territories and are ready for start-up.
A single unit is now being installed at a Canadian Steel Mill and it will be ready for start-up in November of this year. This Snake will elevate various alloys for the specialty steel making process.
Three (3) Snake units are currently in manufacture scheduled for November 2006 delivery to a gathering yard near Toronto Canada. From there they will be delivered by ice roads to Northern Ontario, to the facilities of another diamond mining project.
DSI Snake Sandwich High-Angle Conveyors prove most economical in the largest of applications. This inspired the DSI Snake slogan, the greater the LOAD, the higher the lift, the better we look!
Dos Santos International is looking forward, with confidence, to continued success in 2006 and beyond.
Please visit our web site at http://www.dossantosintl.com for more information.
Dos Santos International Adds Six New Units in Second Half of 2005
DSI Adds Key Officers
DSI Snake Start-Up in Spain
Dos Santos International announces DSI Snake Start-Up In Northern Spain
Dos Santos International, USA, announces the start-up of their latest DSI Snake-Sandwich High-Angle conveyor, on the 24th of July, 2003, at the Aceralia Steel Mill, near Gijon, Asturias, Spain.
The DSI Snake is part of an expansion to the coal grinding, facilities for the carbon injection to the existing and new blast furnaces. The DSI Snake elevates the total raw coal through-put to a transfer where a bifurcated chute, with flop gate, allows directing the coal flow to the old and new grinding facilities.
Dos Santos International partnered with PHB Weserhutte, of Gijon, contractor for the expansion project, in the supply, installation and start-up of the DSI Snake.
Operating parameters for the new DSI Snake are summarized in the “Technical Data” table. The DSI Snake is the latest in Sandwich-Belt High-Angle Conveyor technology, employing all and only conventional conveyor equipment and components. There are no special pressing mechanisms. A firm yet gentle hugging pressure, imparted to the conveyed material, is induced entirely by radial pressure due to belt tension and the carrying profile.
Though the first DSI Snake Conveyor for PHB Weserhutte and Aceralia this is yet another Snake in a growing list of sandwich belt installations, by Dos Santos International, since 1998.
DSI Snake Start-Up in Michigan
Dos Santos International Wins High-Angle Conveyor Order