- Press release BoxID 489382
SCHADE Lagertechnik: Portal Scraper for Chrome Ore to Kazakhstan
The new portal scraper spans the stockpiled ore and travels back and forth longitudinally over the stockpile. In this instance and owing to the abrasivity of the material, SCHADE is employing a scraper chain furnished with a wing roller, the bearing being arranged directly on the shaft. The latter was especially developed for highly abrasive bulk materials. The drag link conveyor chain will be used in particular where chain lubrication is not permitted. It is furnished with hardened bolts and bushings which keep the wear factor at a low level. Each link of the bushed chain is additionally equipped with bearings and wing rollers which run in the chain guide. The rollers are furnished with bearings and special seals. An automatic chain tensioning device also ensures a low maintenance requirement. The drive shaft sits in sealed bearings and is fitted with two welded tumblers featuring exchangeable special steel tooth segments.
The portal scraper transports the bulk material away in layers from the side slope and guides it over a concrete ramp onto a belt conveyor which is arranged longitudinally adjacent to the stockpile. At the end of the bulk material stockpile the scraper boom lowers by a depth of cut. Then the scraper carries away the next layer in the opposing direction of travel. This process is repeated until the stockpile has been reclaimed in its entirety.
Reclamation takes place automatically, the cutting and grading of the stockpile is usually performed manually by the operators in Aktobe. During reclamation chains and drives run continuously whilst the angle of slope of the stockpile and the front ends of the stockyard are monitored automatically. This monitoring enables the scraper to travel up to the headwall, save for a minimal safety distance. Simultaneous monitoring of the angle of slope prevents the collapse of the side of the stockpile.
Today chrome is used primarily for the production of corrosion and heat-resistant alloys (e.g. chrome-vanadium steel) and is needed for iron and steel production (ferrochrome steels). In the metallurgical industry the metal alloy chrome is indispensable and is used here mainly in the form of ferrochrome. This material cannot be used in the production of stainless steel as ferrochrome lends it the decisive corrosion resistance and hygiene properties. Chrome created the shine and attractive appearance of the end product. In iron metallurgy it provides, among others, a higher resistance to heat and wear.
About Schade Lagertechnik GmbH & Co. KG
SCHADE Lagertechnik GmbH is among the leading manufacturers worldwide of equipment for bulk material stockyards and blending beds for all major sectors. The company was founded in 1879 and is today headquartered in Herne. It has gained an outstanding reputation worldwide for its modern stockyard and homogenising concepts. It has belonged to the AUMUND Group since 2001.
About the AUMUND Group
The AUMUND Group is active worldwide. The conveying and storage specialists have special expertise at their disposal when dealing with bulk materials. With their high degree of individuality, both its technically sophisticated as well as innovative products have contributed to the AUMUND Group today being a market leader in many areas of conveying and storage technology. The manufacturing companies AUMUND Fördertechnik GmbH (Rheinberg, Germany), SCHADE Lagertechnik GmbH (Herne, Germany), B&W Mechanical Handling Ltd. (Ely, Great Britain) as well as AUMUND Logistik GmbH (Rheinberg, Germany) are consolidated under the umbrella of the AUMUND Group. In conjunction with the headquarters of the manufacturing companies, the global conveying and storage technology business is spearheaded by a total of eight locations in Asia, Europe, North and South America.
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