Plant management wished to compare the performance of competitive belt cleaning systems.
The plant operates parallel (redundant) conveyor systems that carry approximately the same material load on the same operating schedule. Installing competing belt cleaners on the side-by-side conveyors allowed the plant to compare belt cleaning results. A Martin Engineering belt cleaning system was installed on Belts #1 and #2 North. On Belt #1 North, this system consisted of a Martin® QC1™ Cleaner HD, a Martin® SAF2™ Cleaner, awater spray bar, a Martin® DT2 Cleaner and a Martin® DT2 Inline Cleaner XHD.
All three of the secondary cleaners incorporated tungsten carbide blade tips. Comparable belt cleaning systems supplied by a competitor were installed on Belts #1 and #2 South. Tests were conducted to analyze the amount of carryback remaining on the belts after the belt cleaners were installed. In these tests, a putty knife is held against the moving belt for ten seconds to remove residual material. The material removed is then weighed, and this amount is multiplied up to provide the amount of material left remaining on the belt during a day of operation.
It was calculated that the belt cleaners from Martin Engineering left approximately 28.5 metric tons of material on Belt #1 North over 24hours of operation. The testing showed the competing belt cleaning system on Belt #1 South left 171 metric tons of material in 24 hoursof operation. On the surge pile conveyors—Belt #2 South—the competing cleaner, left 23.8 metric tons of material as estimated over a 24-hour period.
The Martin® Belt Cleaners left only 5.15 tons of material over the same period on Belt #2 North. The test report noted that neither cleaner could remove 100% of the materials due to excessive wear and damage in some areas of the conveyor belt. Based on the test results, Martin Engineering’s representative in Peru recommended the adaptation of the same Martin® Multiple Cleaners on all conveyors in the plant.
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