·The Closed Side Setting or CSS of a cone crusher represents the smallest permitted distance between the mantle and the concave during crusher operation This geometrical measure of the crushing chamber which is shown in Fig 3 thus affects the size of the outgoing product as well as the throughput capacity of the equipment Simply put a
·The CSS is an important parameter because it determines the size of the crushed product and affects the capacity of the crusher The CSS can be adjusted by changing the position of the toggle
·crusher can be varied in the field and some crushers are equipped with automatically controlled actuated for the automatic control of the set The open and closed side sets and the gape are identified in Figure The throw of the crusher is the distance that moving jaw moves in going from OSS to CSS Throw = OSS CSS
The benefits of such control can be seen in Fig 4 where the traditional decline in crusher performance with liner wear is alleviated by the use of the speed and CSS control
CSS is the smallest discharge opening dimension on the jaw OSS is the largest discharge opening dimension on the jaw It is equal to the CSS plus the throw of the swing stock The dimension on the discharge end of the jaw liners are measured from Peak to Root To measure the discharge dimension lock out the crusher
·The minimum distance between the mantle and concave is defined as the closed side setting CSS of the cone crusher The CSS is easily changed online in a large variety of commercial crushers; different principles of CSS adjustment are described in Quist 2017 The maximum distance between the mantle and concave on the other hand is defined
·By determining the CSS we will know the closed side setting of the crusher instead of opening of the crusher according to the needs of the plant For further information please refer to the equipment instruction manual chapter 3 general information on the crusher item crusher adjustment A CSS A OSS B and stopped C B C
·The sampling procedure is run the crusher at a specific CSS and take a representative sample To make sure the sample is representative it is always good to have someone viewing the crusher This person should make sure the crusher is fed properly and the operation is even If for example the power draw is stable before the crusher is stopped
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