For all of the dedication of a mine’s service group to the beneficial finest follow in pump administration, someday, encountering cases of pump element wear and tear is inevitable – a matter of when and not if. And when it does occur, component wear inhibits pump efficiency. It is at that point the place, timeously, mines may have to significantly think about retrofitting as a feasible choice.
In this setting, where costs of capital gear costs are rising, replacement may be a sensible business determination. In an advisory focused at mines and other industries, pump OEM, KSB Pumps, recommends retrofitting as a rational enterprise decision: “Retrofitting is a wonderful various to purchasing a new product and may be carried out on pumps regardless of their meant use. It is equally suitable for industrial, water provide and waste water disposal applications in addition to for the ability supply industry.”
It is just pure for mine operators to contemplate buying new pumps. New pump models meet up to date requirements like improved vitality effectivity, compliance with new legal necessities (relating to emissions and safety), extended service life and know-how which produces operating information. But this may not necessitate changing an old pump model, KSB Pumps says, as retrofitting could give an outdated pump a new lease of life, specifically in the following ways:
Save upkeep costs
Reduce energy consumption
Achieve longer service life
Increase system availability
Comply with authorized necessities (e.g: TA-Luft, ATEX)
READ: Full-service capability important for dependable pump provide
Core areas in Retrofitting
The core focus areas in retrofitting are: hydraulic and mechanical modifications to the supplies, above and beyond adjustments to the supplies.
Hydraulic modifications
Some of the hydraulic modifications could involve:
Remachining of present impellers
Installation of latest impellers for off-design conditions
Optimisation of volute casing for off-design conditions
Adjustment of the number of levels (on multistage pumps)
Mechanical changes
The following are a variety of the mechanical modifications:
Closed bearing brackets improve the smoothness of operation and lengthen the bearing life
Installation of mechanical seal systems
Employment of cellular surface put on rings to enhance effectivity, rotor dynamics and dry working properties
Use of optimised materials
The following are its a number of the materials that a variety of the optimised supplies which could be used:
Super duplex stainless steel grades or nickel alloys
Ceramic mineral castings for impellers, put on plates, cover and casing – to be used with finely dispersed, highly abrasive solutions
Non-metallic rings and bushes
Ceramic plain bearings
Surface coatings