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Sandvik crushers producing results

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World Cement,

Opportunities provided by the demand for enhanced plant automation, the production of fine materials and artificial sand manufacturing, have seen Sandvik Construction in Korea achieve some notable successes. Orders have recently been received for CH430 and CH440 cone and CV229 VSI crushers, all equipped with ASRi. These machines have proved themselves the world over producing the fine materials customers require, and are now hard at work delivering solutions for customers throughout Korea.

Sandvik stationary crushing equipment is engineered for maximum productivity, offering advanced customer focused solutions for any material size reduction. In addition an extended offering includes such items as wear parts, extended warranty and retrofits, with a focus on customers’ productivity and profitability. These are all enhanced by Sandvik Construction’s comprehensive knowledge of customers’ raw materials, supported by an in-house laboratory, with a full scale test plant, which enables Sandvik to deliver plant-crusher optimisation audits at customers own site. Recently this customer focused approach has been warmly embraced by two Korean companies, who have both used Sandvik Construction crushing equipment in rather unusual applications.

Wooryung using the best to produce the best

In recent years some of Korea’s leading aggregates producers have started to invest in Sandvik crushing equipment. One such company is Wooryung, which is using a recently acquired CH430 cone crusher to produce a 30mm product from a -150mm feed material. The CH430 is located at the company’s site in YoungWol, in KangWon province, with the crushed limestone being supplied to a steel company after desulfurisation. The use of the CH430 is seen as a way of using the best equipment to produce an end product of the highest quality. Due to Wooryung’s customer’s requirement it was decided that if the best possible product was to be produced then the very best in cone crushes should be used.

Sandvik cone crushers, such as the CH430, combine high capacity operation with high reduction efficiency. With hydraulically adjusted CSS and automatic wear compensation, a choice of different crushing chambers and eccentric throws, plus many other high performance features, helps to ensure each model is versatile, user friendly and highly productive. All Sandvik cone crushers are products of Sandvik’s hard won experience, but are optimised by 3D CAD and Finite Element Analysis (FEA). Each model is tested “virtually” for stress, strain, shock, deformation, thermal loading, vibration and noise under a wide range of load conditions, with the end result being exceptional reliability.

New CV229 VSI aids Korean sand production

Sandvik VSI crushers have been developed for the tertiary and quaternary crushing of abrasive rocks, with the design of the working principle of these innovative crushers encouraging material to break along natural cleavage planes, thus producing stress free, cubical shaped products. This means that the VSIs’ development ensures that product shape and size are consistent, but the innovative nature of the design also produces reduced power consumption, increased capacities, reduced maintenance costs, and vitally, requires fewer maintenance services.

Introduced in 2002, Sandvik’s line of autogenous crushers, of which the CV229 is one of the more recent developments, utilises a rock lined rotor to accelerate material. This is then impacted in a highly energised rock lined crushing chamber and it impacts with material falling through the biflow system. The crushers incorporate the Sandvik Hurricane™ rotor, which became a major breakthrough in VSI autogenous rotor design due to its decreased vibration levels and wear part design, which results in increased crusher bearing life combined with reduced maintenance. Standard Sandvik VSI crushers are fitted with a timed trapped two key system, which ensures the safety of maintenance personnel combined with electrical isolation. Also supplied and fitted as standard, are a vibration detection switch and a pre-start alarm siren.

These features have been particularly useful to one such Korean company as a shortage of sand in its natural form has presented Bokwang with the opportunity to use its existing aggregates to help satisfy the needs of the Korean construction industry. This is achieved through not only being able to supply a manufactured sand product, but also by being able to improve on the naturally occurring sand. How this is accomplished is due to manufactured sand possessing significant benefits over the naturally occurring form, as it originates directly from high quality virgin rock, and thus contains very few, if any, contaminants that are found in naturally occurring sand.

There are also significant advantages to be gained from the cubical shape of the end product produced during manufacture, which further provides advantages during cement manufacture, and hence benefits the construction industry as a whole. Hence the Sandvik CV229 is now proving its qualities by producing sand from aggregate with Bokwang using the VSI at its site in KwangJoo, KyungGi province. The -35mm aggregate is fed into the CV229 to produce a finished product of -5mm, which is then used as sand.

Productivity and environmental protection

Crushing efficiency and environmental protection are often seen as mutually incompatible, but Sandvik places equal emphasis on both. For example, dust encapsulation improves the work environment, extends the life of equipment, and reduces clean-up costs thus improving process efficiency. Both Wooryung and Bokwang have been delighted not only by the excellent performance of their Sandvik equipment, but also the environmental benefits they, and their localities, also enjoy.

Adapted from press release by Joseph Green

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