Mineral Processing
Eliminate headaches in minerals conveying and processing with Precision solutions. We specialize in BOTH moving commodity materials and helping you process specialty high-value products. Our expertise includes processing lime, activated carbon, metallurgical coal, gypsum, talc, clay, silica, calcium carbonate, and many other minerals.
Maximize your revenue and ROI with greater reliability and constant uptime. Precision equipment is a key ingredient in your profit margins and competitive edge.
Stay compliant with environmental regulations. Precision solutions help you minimize creation of dust and help you contain it effectively, even when moving high volumes of material.
Process high-value and specialty-blended products precisely too. Precision is your best partner for both high-volume commodity processing AND for products that have smaller particle sizes, higher purity, or special additives. We have rotary valve solutions that are ideal for fine grinding, size grading, washing, and blending.
Need to move special granular materials? If you have a higher-value granulated material that likes “special handling” versus traditional processing, we can help. We have rotary valves that work well with granulated formats without granule breakage, dust creation, and waste.
Feeding high moisture content materials into a dryer? Precision can make the process reliable, with less sticking / clogging of hard-to-handle materials and superior airlock performance. Drying of raw ore or of a washed intermediate product is a common process step in several mineral sub-segments.
Simplify maintenance with all of your rotary valves from a single source. Precision allows you to standardize with one brand of drives and motors and even a common valve size. Reduce costs of spares and technician training. Our line is broad enough and deep enough to handle all of your needs. And we stand behind everything with rapid turnarounds and industry-smart support.
Mineral Processing Applications
Pneumatic Conveying Rotary Valves
REQUIREMENTS
Metering and airlock function or solely airlock function. Inject raw or finished products into pneumatic line.
PRECISION SOLUTION
Severe Duty version of the PMV-8 to PMV-20.
Transitions for slide-out/slide-in replacement of competitive valves.
Pneumatic line injectors.
KEY DIFFERENTIATORS
Tight tolerances minimize blow-by and maintains pneumatic system performance.
2X -3X useful life over commodity, cast-iron valves is typical.
PRECISION PRODUCT
Dryer Infeed Rotary Feeders – Low Moisture Applications
REQUIREMENTS
Moisture typically < 10%, metering to control the feed of minerals to dryer and airlock to minimize heat/hot-gas escape from the dryer.
PRECISION SOLUTION
Severe Duty version of the PMV-8 to PMV-20.
Transitions for slide-out/slide-in replacement of competitive valves
Pneumatic line injectors
KEY DIFFERENTIATORS
Tight tolerances minimize blow-by and maintains pneumatic system performance.
2X – 3X useful life over commodity, cast-iron valves is typical.
PRECISION PRODUCT
Dryer Infeed Rotary Feeders – High Moisture Applications
REQUIREMENTS
Moisture typically > 10%, metering to control the feed of minerals to dryer and airlock to minimize heat/hot-gas escape from the dryer.
PRECISION SOLUTION
Dual-rotor design that mechanically “sweeps” the rounded pockets on the upper / product rotor to prevent material build-up.
KEY DIFFERENTIATORS
Handles high-moisture minerals without costly operator intervention for clean-out.
Maintains a consistent feed rate to optimize drying and energy use.
PRECISION PRODUCT
Silo Discharge Rotary Valves
REQUIREMENTS
Withdrawing raw materials, intermediates, additives, or finished products from a silo and discharging into air-slides or screws
PRECISION SOLUTION
Severe Duty version of the PMV, from PMV-8 to PMV-28.
Beveled rotor vanes, MSHA guards, zero speed sensors, and air purge.
Transitions for slide-out/slide-in replacement of competitive valves.
KEY DIFFERENTIATORS
Leak-free, dust-free operation
Configurable to replace any existing rotary valve
2X -3X useful life over commodity, cast-iron valves is typical.
PRECISION PRODUCT
Rotary Valves for Granular or Pelletized Products
REQUIREMENTS
Minimize shearing and dust creation; withdrawing product from silo and discharge into pneumatic or other conveying systems.
PRECISION SOLUTION
Adjustable orifice plate to optimize feed rate.
MSHA guards and zero speed sensors.
Tri-Braze barrel & rotor for long life
KEY DIFFERENTIATORS
Large inlet/discharge and high-capacity rotor minimize pinch points
Wear-resistant for years of service
PRECISION PRODUCT
Dust Collector Rotary Valves
REQUIREMENTS
General dust control systems, process baghouses – mill systems, or ash collection from dryer, kiln, or furnace.
PRECISION SOLUTION
Severe Duty version of the PMV-8 to PMV-12.
Transitions for slide-out/slide-in replacement of competitive valves.
Dependable Nord drives
KEY DIFFERENTIATORS
Configurable to fit existing dust collectors
Tight tolerances to minimize fugitive dust
2X – 3X useful life over commodity, cast-iron valves is typical.
PRECISION PRODUCT
Mill Infeed Rotary Valves for Low Moisture Applications
REQUIREMENTS
Moisture typically < 10%, meter raw mineral to mill and minimize false air introduction into the mill, hammer mills, ball mills, classifier mills, and others.
PRECISION SOLUTION
Severe Duty version of the PMV, typically up to PMV-16.
Minimize surging or slugging of feed to mill by running smaller valves at faster speeds.
KEY DIFFERENTIATORS
Maintains consistent feed rate to the mill to optimize grinding performance
Valves available for materials up to 4″ particle size
2X – 3X useful life over commodity, cast-iron valves is typical.
PRECISION PRODUCT
Mill Infeed Rotary Valves for High Moisture Applications
REQUIREMENTS
Moisture typically > 10%, meter raw mineral to mill and minimize false air introduction into mill, hammer mills, ball mills, classifier mills, and others.
PRECISION SOLUTION
Dual-rotor design that mechanically “sweeps” the rounded pockets on the upper / product rotor to prevent material build-up.
KEY DIFFERENTIATORS
Handles high-moisture minerals without costly operator intervention for clean-out
Maintains consistent feed rate to mill to optimize grinding performance
PRECISION PRODUCT
Rotary Valves for DSI/FGD Pollution Control Systems
REQUIREMENTS
Systems injecting lime, trona, activated carbon, fly ash, bottom ash, or other sorbents for treating flue gas discharge for SOx or NOx.
PRECISION SOLUTION
Severe Duty version of the PMV-8 or PMV-10
Pneumatic line injectors
Nord inverter-duty drive motors
KEY DIFFERENTIATORS
Durability that handles lime, trona, or activated carbon
Tight tolerances minimize blow-by and maintains pneumatic system performance
2X – 3X useful life over commodity, cast-iron valves is typical.
PRECISION PRODUCT