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| Below is a practical interpolated 10 HP Tesla disc pump module derived from your 1 HP, 6 inch disc, 1 mm gap baseline, aimed at dirty water for gold washing. Because Tesla pumps are highly geometry• and clearance-sensitive, I am giving (1) a recommended hardware envelope and (2) expected duty bands (flow, head, pressure) that are consistent with horsepower and rim-speed limits.1) Baseline you already defined• Service: dirty water for gold sluicing (sand, fines, grit)• Disc spacing (gap): 1.0 mm• Baseline rotor: 6 inch disc diameter, about 10 discs• Driver: 1 HP with VFD2) How to scale from 1 HP to 10 HPThere are two valid ways to scale a Tesla disc pump:Path A: Scale power by increasing disc diameter and port sizes (preferred)• Increase disc diameter to raise rim speed and head capability.• Increase inlet and outlet diameter to keep velocities reasonable (avoid choking the pump).• Increase disc count moderately to add shear area without excessive torque drag.Path B: Scale power by increasing disc count only (not preferred at 10 HP)• You can stack many more discs at the same diameter, but torque drag rises quickly and you still choke on porting and internal passages.• For dirty water, too many discs can also increase abrasion surfaces and internal heating.For a 10 HP class pump, Path A is the practical approach.3) Recommended 10 HP Tesla disc pump geometry for dirty waterDisc diameterTwo good options:1. 12 inch discs (high-flow module; closest to your earlier 12 inch disc / 10 HP concept)• Advantages: larger swept area, higher head ceiling if you need it, better scaling.2. 10 inch discs (if you want slightly lower tip speed and potentially less wear)• Advantages: easier to package, somewhat reduced rim abrasion rate at a given rpm.Recommendation: 12 inch discs for a true 10 HP wash-plant supply module.Disc spacing (gap)Dirty water drives the gap choice more than anything else.• 1.0 mm is a sound gold sluice dirty water baseline.• If you expect •very gritty• water or occasional small pebbles slipping through screens, consider 1.2 to 1.5 mm.• If water is screened and mostly sand/fines, you can tighten to 0.7 to 0.9 mm for better efficiency and head.Recommendation: 1.0 to 1.2 mm for most field wash plants.Number of discsAt 10 HP, you generally want more shear area than the 1 HP rotor, but you do not want torque drag to explode.Typical practical band for a 12 inch rotor at 10 HP:• 12 to 20 discsRecommendation: start at 16 discs (with cartridge options of 12, 16, 20 depending on duty).Inlet diameter (suction)Your target flows will quickly punish small suction ports.• For 200 to 600 gpm dirty water, a practical suction size is 6 inch.• If you want to push above 600 gpm consistently, consider 8 inch suction.Recommendation: 6 inch suction (8 inch if you’re targeting very high flow).Exit diameter (discharge)Discharge is typically one size smaller than suction to keep velocity manageable but not oversized.• 4 inch discharge is appropriate for roughly 200 to 450 gpm.• 6 inch discharge is appropriate for 400 to 800 gpm (especially if you want low discharge losses or long manifolds).Recommendation: 6 inch discharge if you are truly building a wash-plant supply pump; otherwise 4 inch if your spray bars or plant manifold necks down quickly anyway.4) Expected pumping data for a 10 HP module (imperial and metric)Speed assumptionA 10 HP skid will normally be VFD-controlled, so think in bands:• High-speed: 3600 rpm maximum• Typical wash-plant operation: 1800 to 3000 rpm (less wear, plenty of flow)Head and pressure capability (order-of-magnitude realistic)With 12 inch discs, rim speed doubles versus 6 inch at the same rpm, so the •theoretical• head ceiling rises substantially. Practically, for dirty water and 1.0 to 1.2 mm spacing, you will operate in a moderate head region.A realistic duty envelope for wash plants:Band 1: High flow, low head wash water supply• Differential pressure: 10 to 15 psi (0.7 to 1.0 bar)• Head: 23 to 35 ft (7 to 11 m)• Flow: 350 to 600 gpm (80 to 136 m3/h)Band 2: Moderate head for longer hoses, restrictive spray bars• Differential pressure: 15 to 25 psi (1.0 to 1.7 bar)• Head: 35 to 58 ft (11 to 18 m)• Flow: 220 to 380 gpm (50 to 87 m3/h)Band 3: Higher pressure operation, not ideal for abrasive duty• Differential pressure: 25 to 40 psi (1.7 to 2.8 bar)• Head: 58 to 92 ft (18 to 28 m)• Flow: 130 to 230 gpm (31 to 53 m3/h)Efficiency expectation (dirty water)For a 10 HP Tesla pump with 1.0 to 1.2 mm gap in abrasive service:• Typical overall efficiency (shaft to water): 20% to 35% You can improve this with tighter gaps and cleaner water, but you typically give that up in mining to avoid plugging and damage.5) Is there a more optimal disc spacing or disc countYes, but optimal depends on whether your constraint is solids tolerance or energy efficiency.If your constraint is solids and uptime (most gold operations)• Disc spacing: 1.0 to 1.5 mm• Disc count: 12 to 16• Suction: 6 to 8 inch with a rock screen• Discharge: 6 inch to keep losses lowIf your constraint is power consumption and you have screened water• Disc spacing: 0.7 to 0.9 mm• Disc count: 16 to 20• You will gain head and efficiency, but risk more grit sensitivity.My field recommendation for a first 10 HP production unit:• 12 inch discs• 1.0 to 1.2 mm spacing• 16 discs• 6 inch suction, 6 inch discharge• Operate 1800 to 3000 rpm most of the timeArticlePage Title10 HP Tesla Disc Pump for Gold Wash Plants High Flow Dirty Water Supply with VFD ControlMeta DescriptionA 10 HP Tesla disc pump can deliver high flow water for gold wash plants while tolerating dirty, abrasive water. This article covers recommended disc diameter, spacing, disc count, suction and discharge sizes, and expected flow and pressure ranges for wash plant duty.TeaserGold wash plants depend on steady water flow to break up clay, wash rock, and drive sluice and spray systems. Dirty water with sand and grit destroys many conventional pumps. A 10 HP Tesla disc pump skid provides a modular alternative designed for abrasive service and controlled output using a VFD.Why wash plants need a different kind of pumpWash plants consume large volumes of water to separate gold from dirt and rock. The water is rarely clean. Abrasive sand, silt, and grit accelerate wear and can clog pumps that rely on tight vane passages. Downtime is expensive, especially when the wash plant is the bottleneck for production.A Tesla disc pump moves water by shear along rotating discs, which can be configured with wider passages than many impeller designs. With VFD speed control, the operator can dial in flow for the plant while staying within safe pressure limits.Recommended 10 HP disc pump configuration for mining waterA practical 10 HP wash plant module scales disc diameter and port sizes to achieve high flow without choking the suction and discharge.Recommended starting configuration• Disc diameter: 12 inches• Disc spacing: 1.0 to 1.2 mm for dirty water tolerance• Disc count: 16 discs as a baseline, with cartridge options for 12 or 20 discs• Suction size: 6 inches, 8 inches for very high flow targets• Discharge size: 6 inches for low-loss manifold supply, 4 inches if downstream spray systems are restrictive• Drive: 10 HP motor with VFD, typical operation 1800 to 3000 rpmThis configuration prioritizes uptime and solids tolerance, which is typically the correct trade for a gold operation.Expected pumping performance in the fieldActual results depend on hose lengths, elevation, fittings, and spray bar restrictions. For typical wash plant duty bands:High flow supply duty• 350 to 600 gpm at 10 to 15 psi• 80 to 136 m3 per hour at 0.7 to 1.0 barModerate head duty for long runs and restrictive spray bars• 220 to 380 gpm at 15 to 25 psi• 50 to 87 m3 per hour at 1.0 to 1.7 barHigher pressure operation is possible, but abrasive wear rises rapidly as discharge pressure increases, so this region is best used only when necessary.Disc spacing and disc count optimization for mining realityDisc spacing controls the balance between efficiency and solids tolerance.• Tighter gaps increase efficiency and pressure capability, but reduce tolerance to grit and debris.• Wider gaps reduce clogging and improve survivability in abrasive water, but lower efficiency and soften the pump curve.For most gold wash plants, 1.0 to 1.2 mm disc spacing is the practical sweet spot. Disc count should be high enough to provide shear area but not so high that torque drag overloads the motor. A baseline of 16 discs provides a good starting point for a 10 HP unit.Reliability practices that matter more than the pumpFor wash plants, the system design matters as much as the pump.• Use flooded suction when possible• Add a rock screen at the suction intake to prevent stones from entering the rotor• Include a bypass or controlled recirculation path so the pump does not operate dead-headed• Monitor discharge pressure and motor power through the VFD so operators can detect restrictions early• Design wear zones as replaceable elements to manage abrasion cost-effectivelySummaryA 10 HP Tesla disc pump can supply wash plant water at high flow rates while tolerating abrasive dirty water. A 12 inch disc pack with 1.0 to 1.2 mm spacing, adequate suction and discharge porting, and VFD control provides a modular solution aligned with mining uptime requirements.If you tell me your target wash plant throughput in tons per hour and whether you are feeding spray bars or a distribution manifold, I can map it directly to a recommended flow target and estimate how many 10 HP skids you need in parallel. |
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