Sandvik’s Korean roots
First publishedin World Highways
Sandvik-supplied aggregate plant is processing granite at Doowon Development Company's Jungeub quarry in JeonRa Province, South Korea
Sandvik has supplied an aggregate plant to the DooWon Development Company to process granite at its Jungeub quarry in JeonRa province, South Korea.
The supplied equipment is processing blasted rock from a feed size of -900mm in order to produce aggregate for the Korean construction industry, with the product fractions ranging from 0-5mm to 13-25mm, at a required rate of production of 500tonnes per hour.
The parent company of the DooWon Development Company, TaeShin, was established in 2004, with the DooWon quarry being established to deal with the high demand for crushed aggregates. Located 50km away from the existing TaeShin operation, the new quarry is said to have impressive aggregate production facilities, enabling TaeShin to be the largest aggregate producer in JeonRa province.
Current customers include the Korean Railways, mixed concrete and asphalt producers, as well as civil contractors. TaeShin now produces 2.5million tonnes of aggregate and sand a year through the use of three crushing plants. The plants have possessing operational capacities ranging from 200tonnes to 600tonnes per hour. The increased production means TaeShin now employ 42 people across the sites.
“It was my intention to install the best crushing plant (in Korea) in order to produce good product shape, supply a better quality of aggregate to my customers, and reduce our aggregate production costs,” says Kim HwanMoon, owner of TaeShin.
The granite at the Jungeub quarry is initially blasted in order to produce a coarse rock feed product of -900mm, with the material possessing a bulk density of 1.6 tons per m3. This potentially tricky feed product is initially put through a grizzly feeder to separate the -150mm product, before being fed into primary and secondary crushers, and then screened in order to produce material fractions of 0-5mm, 5-13mm, and 13- 25mm.
The products are produced through a process that was said to have been designed by Sandvik engineers in order to maximise production, with an ideal target rate of 500tonnes per hour. The equipment used to produce the required gradings’ are: one Grizzly feeder SV1652H; a Jaw Crusher CJ615; Cone Crusher CH660; Cone Crusher CH440; two Screen SC2463; and a DX700 drill rig.