Four bulk carriers have been turned away from Chinese ports by customs in the last six weeks, ostensibly because of fungicide in their cargoes, but in truth, say the foreign executives, because crushers do not want to pay the high prices they have contracted for them.
Theprevalence of shell-crushers coincides with the appearance of otherdefenses, too, such as thicker plates and changes in arm branching tominimize arm loss.
The oversize is reduced by roll crushers to the correct size of coal.
The secondary screens receive the coal from the crushers and remove the fines.
Huge digging machines were needed and crushers to get the gold from the rock.
The shorter service life of single roller crushers installed on the end of sinter machine is a difficult technology problem to the steel-iron industry.
It is suitable for the design of crushing chamber for single - and double - toggle-plate jaw crushers with upper or lower toggle plate.
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