Screw Feeders & Live Bottoms
Screw feeders and live bottoms are one of the most accurate and efficient methods of metering bulk materials. Many processes begin with bulk materials being discharged from hoppers, bins or silos. The inlet area is flood-loaded and designed to meter bulk materials at fixed or variable rates. With our extensive knowledge and experience, KWS will provide a system to meet all of your requirements.
Mass Flow Screw Feeders Industry Solutions
Advantages of Using Screw Feeders & Live Bottoms
- Ideal for metering a wide variety of bulk materials – from sluggish to free-flowing
- Design flexibility – Can be a single or multiple-screw design depending on hopper design and required feedrate
- Can be designed with variable frequency drives to provide a wide range of feed rates to downstream processes
- Bulk materials are discharged in mass-flow or first-in, first-out with uniform flow – no bridging or rat-holing of bulk materials in hopper
KWS Screw Feeders and Live Bottoms are custom designed for your application. Bulk material characteristics, feed-rate and hopper or silo configurations are considered when designing the proper solution for your application.
Available Features / Options
- Custom Engineered For Your Specific Application
- Wide Range Of Construction Materials – Carbon Steel, Stainless Steel and Abrasion-Resistant Alloys
- Flight Configurations Designed For Material Characteristics – Variable Pitch, Mass-Flow or Tapered Flight
- High Torque Drive Units To Start Up Under Head Load Conditions
- Single Screw Feeders
- Multiple-Screw Live Bottom Feeders
- Shaftless Screw Feeders
- Mass-Flow Screw Feeders
Available Configurations
KWS is the industry leader for designing screw feeders and live bottoms. KWS is an ISO 9001:2015 certified manufacturer. Every component and assembly is manufactured in the USA by highly skilled craftsmen. All KWS welders are certified in accordance with American Welding Society (AWS) Codes. KWS Screw Feeders and Live Bottoms are manufactured to rigid quality standards.
Resources for Screw Feeders & Live Bottoms
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Heavy Duty Screw Feeder for Metering Lime Kiln Dust at Major Lime Supplier in AL
Problem Solver
The KWS screw feeder was designed for the harshest environment and duty of the application and spans…
Read MoreMetering Hot Lime from Silo at International Paper in Ticonderoga, NY
Problem Solver
The new KWS slide gate and screw feeder were constructed using heavy-duty 304 stainless steel to…
Read MoreMass Flow Silo Transition and Screw Feeder for Metering Calcium Carbonate at Inteplast Group in…
Problem Solver
KWS provided a mass flow bin transition and screw feeder as the most efficient way of metering calcium…
Read MoreMetering and Conveying Silica Sand for Sedron Technologies
Problem Solver
The KWS variable pitch screw design evenly draws the silica sand from the hopper and avoids rat-holing to…
Read MoreScrew Feeder for Metering Wood Chips into Furnace to Produce Activated Carbon
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By analyzing the existing equipment, KWS determined the root causes of the failures and provided…
Read MoreInclined Screw Feeders for Metering Animal Protein Powder at Phibro Animal Health in Omaha, NE
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The KWS screw feeders were designed with variable pitch screws and a feeder shroud to precisely meter…
Read MoreFeeding and Elevating Glass Cullet for Owens Corning in Newark, OH
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Since glass cullet is very abrasive, inside areas of the bucket elevator and screw feeder were lined with…
Read MoreInclined Screw Feeder and Bucket Elevator for Metering and Elevating Abrasive Materials at GMC…
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The new KWS screw feeder and bucket elevator were designed for the abrasiveness of the application and…
Read MoreLive Bottom Screw Feeders for Metering Dried Biosolids
Problem Solver
KWS designed and manufactured the live bottom screw feeders using 316 stainless steel to eliminate…
Read MoreKWS Saves Steel Mill $1,600,000 in Potential Downtime with Quick Delivery
Made-to-Order Solution
Because KWS provided Nucor with the highest quality equipment and shortest lead time in the industry,…
Read MoreLive Bottom Replacement Screws for Solvay Wood Pellet Plant in Quitman, MS
Made-to-Order Solution
KWS mounted the screws on larger diameter pipe with heavier wall thickness to minimize deflection and…
Read MoreSpecial Tolerance Screws for Metering Frac Sand and Proppant for Freemyer Industrial Pressure
Made-to-Order Solution
Engineers from KWS helped Freemyer redesign the Sand Delivery System to achieve maximum accuracy and feed…
Read MoreMetering Wood Bark at Georgia-Pacific Mill in Crossett, AR
Made-to-Order Solution
KWS used its team of engineers to reverse engineer the drums to provide a source that is not only more…
Read MoreRedesigned Screws for Feeding Damp, Abrasive Lignite Coal at Great River Energy in Underwood,…
Made-to-Order Solution
KWS polished the AR400 ribbon flights and the outside diameter of the pipe to a 150-grit finish so the…
Read MoreRedesigned Feeder Screw for Metering Powdered Gypsum at Georgia Pacific Mill in McQueeney, TX
Made-to-Order Solution
KWS and Motion Industries visited the mill to review the application, determine the exact needs of the…
Read MoreQuick Delivery of Abrasion Resistant Screws for Power Plant
Made-to-Order Solution
KWS manufactured the new 25-foot long screws on 10-inch schedule 120 pipe with a wall thickness of…
Read MoreLive Bottom Bin Replacement Screws
Made-to-Order Solution
KWS provides complete Live Bottom Bin Systems or Replacement Screws for Existing Systems.
Read MoreStorage Hopper and Mass Flow Screw Feeder for Shredded Polypropylene and Fiberglass
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The new KWS hopper was designed for a usable capacity of 2,600 cubic feet and for mass flow of the…
Read MoreHigh Capacity Screw Feeder for Mississippi Lime in Ste. Genevieve, MO
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The new KWS screw feeder is equipped with a 125-horsepower motor in order to handle full 100-percent…
Read MoreComplete Storage and Conveying System for Spent Catalyst
Problem Solver
KWS designed screw feeders, conveyors and hoppers to meter and convey a wide variety of bulk materials of…
Read MoreMass Flow Screw Feeder and Dual Actuated Slide Gate for Soda Ash
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The new KWS screw feeder was designed with a large rectangular inlet and mass-flow screw to allow for…
Read MoreWood Chip Storage and Metering System for Pyrolysis
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KWS provided a unique design for the growing pyrolysis industry that met the tight space constraints of…
Read MoreSludge Load Out System for Koch Foods in Fairfield, OH
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The complete system provided by KWS was constructed from 304 stainless steel to provide long life and…
Read MoreBlender Truck Sand Screws for Frac Sand and Proppant
Problem Solver
KWS manufactures several different designs for metering frac sand and proppant. Some units utilize a fold…
Read MoreCustom-Designed Screw Feeder with Hopper to Distribute Dewatered Biosolids to Belt Dryer for…
Problem Solver
The screw feeder and surge hopper were designed to store an exact volume of dewatered biosolids needed to…
Read MoreMetering Dextrose from Super-Sacks for Georgia Pacific Building Products in Fletcher, OK
Problem Solver
A team from KWS visited the facility and met the Georgia Pacific Plant Engineer to determine the exact…
Read MoreCompact Screw Feeder to Fit Confined Space for Stillwater Mining in Columbus, MT
Problem Solver
Engineers from KWS modeled the new shaftless screw feeder and the surrounding area in Inventor 3D to make…
Read MoreScrew Feeder to Meter Ingredients for Animal Feed Blocks
Problem Solver
KWS engineers traveled to the plant to gather critical dimensional information that would be needed to…
Read MoreInclined Screw Feeder for Metering Food Powders at SensoryEffects in Defiance, OH
Problem Solver
Engineers from KWS worked together with the SensoryEffects corporate project engineer and plant manager…
Read MoreMetering and Conveying Shredded Fiberglass at CTA Acoustics in Corbin, KY
Problem Solver
KWS engineers and local field representatives worked side by side with CTA Acoustics to develop the ideal…
Read MoreScrew Feeders for Metering Limestone from Weigh Hoppers at Minova in Georgetown, KY
Problem Solver
The KWS engineering and sales team provided detailed design drawings and 3D models prior to the order so…
Read MoreCopper Pellet Leakage Problem Solved at Encore Wire Plant in McKinney, Texas
Problem Solver
KWS visited the facility and met with Encore Wire’s Maintenance Manager to determine the source of the…
Read MoreScrew Feeders and Hoppers for Storing and Metering Silica Sand at Nucor Steel in Plymouth, UT
Problem Solver
KWS provided two heavy-duty screw feeders with hoppers to Nucor Steel. Each screw feeder accurately…
Read MoreTwin Screw Feeder for Metering Wood Shavings at American Wood Fibers in Marshall, TX
Problem Solver
KWS designed and manufactured a twin-screw feeder with independent drive units. Each of the twin screws…
Read MoreBi-Directional Screw Feeder for Unloading Rail Cars at Seaboard Foods in Hugoton, KS
Problem Solver
Engineers from KWS and TranSystems worked together to design a bi-directional screw feeder to rapidly and…
Read MoreBiosolids Cake Handling System for Storage and Truck Load Out at Waterloo, ON WWTP
Problem Solver
KWS designed, manufactured, supplied and commissioned an integrated system which required expertise in…
Read MoreStainless Steel Inclined Screw Feeders for Metering Sugar at PIM Brands in Somerset, NJ
Problem Solver
The bulk bag unloading system provided by KWS included an incline screw feeder with hopper and supports.
Read MoreScrew Feeder for Metering Reclaimed Foundry Sand for SandMold Systems
Problem Solver
The KWS screw feeder was designed to be placed inside of a hopper and meter reclaimed foundry sand to…
Read MoreStainless Inclined Screw Feeders for Metering Specialty Phosphates at Innophos Nutrition in…
Problem Solver
KWS designed the screw feeder on a 45-degree incline to allow for the smallest space to be used.
Read MoreMetering Wood Waste to Boilers at Georgia Pacific Dimensional Lumber Mill in Pineland, TX
Problem Solver
KWS Engineers visited the Pineland mill and met with the Georgia Pacific Boiler/Kiln Supervisor to review…
Read MoreScrew Feeder for Metering Crushed Limestone at AEP Coal Fired Power Plant in Hallsville, TX
Problem Solver
Engineers from KWS visited the facility and met the AEP SWEPCO maintenance planner to determine the…
Read MoreLoadout System for Offal and Feathers at a Pilgrim’s Chicken Processing Plant in Lufkin,…
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KWS Design Engineers visited the Lufkin facility and met with the Pilgrimﾒs Plant Manager to identify…
Read MoreSystem for Conveying and Elevating Aluminum Trihydrate at GEO® Specialty Chemicals in Deer…
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KWS saved GEO thousands of dollars by provided engineering, design and manufacturing of the conveying…
Read MoreSpecial Screw Feeder for Metering Green Malt at BRIESS Malt in Chilton, WI
Problem Solver
KWS added a 304 stainless steel diverter or ﾓhogbackﾔ above the screw feeder to reduce the headload…
Read MoreSpecial Screw Feeder for Metering, Mixing and Processing Grains
Problem Solver
Large diameter screw feeder is designed to meter, mix and retain a combination of grain products and…
Read MoreStainless Steel Screw Feeder to Meter Biomass to High Temperature Reactor
Problem Solver
KWS designed and manufactured the screw feeder to be very reliable and exceed the feed rate requirements…
Read MoreStainless Steel Screw Feeders for Baking Ingredients
Problem Solver
Engineers at KWS analyzed the problem of product clogging at the discharge of the screw feeders. By…
Read MoreStorage Hopper with Live Bottom Screw Feeder and Thermal Processors for Sludge Drying System at…
Problem Solver
KWS and Komline Sanderson worked closely together to develop an efficient solution for converting…
Read MoreSwiveling Screw Feeder to Meter Fungicide for Crop Sciences Company
Problem Solver
KWS engineers designed a special screw feeder for the application. The screw feeder was located on a…
Read MoreTriple Mass-Flow Screw Feeders and Conveyors for Phosphate Ore
Problem Solver
KWS designed and manufactured triple mass-flow screw feeders to match the existing hopper at the plant.
Read MoreTwin Mass Flow Screw Feeders and Material Shut-Off Gates
Problem Solver
KWS worked directly with engineers at Carbonyx to design mass flow screw feeders specifically for the…
Read MoreScrew Feeders for Metering Glass Cullet
Problem Solver
Screw Feeders needed to meter glass cullet from storage silos to the process furnaces.
Read MorePolished Food-Grade Stainless Steel Screw Feeder for Metering Thickening Agent for Specialty…
Problem Solver
KWS is the industry leader when providing solutions to difficult applications and excels in manufacturing…
Read MoreShafted Live Bottoms and Transfer Screw Conveyors for Handling Biosolids for the City of San…
Problem Solver
KWS used proprietary design calculations and Autodesk 3D Inventor software to design the live bottoms,…
Read MoreShafted Screw Conveyors for Transferring Biosolids for City of Holland, MI
Problem Solver
KWS Environmental designed the shafted screw conveyors to be reliable with minimal maintenance downtime…
Read MoreSmall Diameter Stainless Screw Feeders to Meter Metal Catalyst
Problem Solver
KWS worked very closely with both BASF and Control & Metering to supply screw feeders to meet the demands…
Read MoreMass Flow Screw Feeder for Metering Waste Plastic
Problem Solver
KWS engineers designed and manufactured a "mass-flow" cone screw feeder specifically for their…
Read MoreMechanical Conveying System Replaces Pneumatics at Durcon, Inc. in Taylor, Texas
Problem Solver
Professional engineers at KWS designed a support structure that provided the needed lateral support for…
Read MoreMetering and Conveying Raw Materials for Making Glass
Problem Solver
Engineers from KWS worked closely with GE engineering personnel to understand the application and design…
Read MoreMetering and Conveying Spent Brewer’s Grain
Problem Solver
KWS also provided all of the structural supports for the conveyor and feeder, inlet and discharge…
Read MorePolished Stainless Steel Mass-Flow Screw Feeders for Cereal Fines
Problem Solver
KWS provided internal plugs inside the center pipe of the screw so the product being conveyed could not…
Read MorePolished Stainless Steel Screw Feeders for Metering Snack Products
Problem Solver
One of the worldﾒs largest producers of cereals, dairy products, snacks and numerous other food…
Read MorePortable Inclined Tubular Screw Feeder for Carbon and Iron Oxide Powder
Problem Solver
KWS created a design with a non-split tubular housing and a screw that fit closely inside the housing to…
Read MorePortable Screw Feeder for Metering Fracking Additive
Problem Solver
Working together, KWS and Halliburton developed a lightweight, portable screw feeder to meter chemical…
Read MoreRailcar Unloading System for Sugar
Problem Solver
KWS was able to modify some of the existing equipment design specifications to provide a more efficient…
Read MoreHopper and Live Bottom Feeder to Store and Meter Natural Wood Glue Additive
Problem Solver
KWS designed a screw feeder with several pitch changes, a tubular profile, and a precise speed to meter…
Read MoreHeavy-Duty, Large Capacity Hoppers and Mass-Flow Screw Feeders to Meter Gypsum and Bottom Ash
Problem Solver
KWS excels at heavy-duty bulk material applications.
Read MoreHoppers with Live Bottom Mass Flow Screw Feeders for Storing and Metering Crystalline Silica…
Problem Solver
KWS recommended the mass flow screw design as the most efficient way of discharging the bulk material…
Read MoreHorizontal and Vertical Screw Conveyors for Conveying Ready-Mix Joint Compounds
Problem Solver
KWS provided both horizontal screw feeders and vertical screw conveyors to Freeman Products for an…
Read MoreInclined Screw Feeders for Metering Granulated Sugar
Problem Solver
Since granulated sugar is a food product, KWS designed and constructed the screw feeders from 304…
Read MoreInclined Screw Feeder for Sludgy Chemicals
Problem Solver
KWS was able to furnish a redesigned screw feeder that was tailored to fit Balchemﾒs precise…
Read MoreInclined Screw Feeder to Meter Glass Powder for Coating of Water Heater Tanks
Problem Solver
KWS designed and manufactured an inclined screw feeder with heavy-duty carbon steel construction due to…
Read MoreProblem Solver
KWS engineers designed a system that could meter and convey the different capacities of raw and finished…
Read MoreLoading Shredded Rubber into Super Sacks
Problem Solver
Genan wanted to eliminate the need for a truck ramp so the hopper could be loaded from ground level. KWS…
Read MoreLow Profile Multi-Screw Feeder
Problem Solver
KWS designed and manufactured a one of a kind, low profile multi-screw feeder as the perfect solution.
Read MoreFood Grade Reversible Screw Feeder
Problem Solver
KWS provided a reversible screw feeder with a central inlet, which proved to be the ideal solution.
Read MoreHeavy-Duty Mass-Flow Twin Screw Feeders and Bucket Elevators for Ground Rubber
Problem Solver
KWS designed and manufactured twin mass-flow screw feeders to match hoppers supplied by Hoover Conveyor.
Read MoreHeavy Duty Tri-Braze™ Construction Screw Feeder for Metering Perlite Fines
Problem Solver
KWS worked with Nestle Purina and a consulting engineering firm to develop an excellent solution for…
Read MoreCustom-Engineered Bulk Material Handling System for Zein Corn Protein Plant
Problem Solver
BRPG contacted KWS after meeting with our local sales representative and requested an engineered solution…
Read MoreCustom Engineered Storage, Metering and Conveying System for Steamed Tobacco Stems
Problem Solver
KWS engineers designed a tapered trapezoidal storage bin with two lump-breakers to break up bales and…
Read MoreDesign-Build System for Feeding and Conveying Wood Chips for enviraPAC in Monticello, AR
Problem Solver
The KWS inclined screw feeders and conveyors were designed to operate 24 hours per day, 7 days per week…
Read MoreDesign-Build System for Dewatering, Mixing, and Drying Oilfield Drill Cuttings
Problem Solver
KWS designed and manufactured every piece of the drill cuttings disposal system.
Read MoreDesign-Build System for Prototype Gasification Process
Problem Solver
KWS designed and manufactured every piece of mechanical equipment on the project from the initial feed…
Read MoreDesign-Build System Utilizing Live Bottom Screw Feeders, Vertical Screw Conveyor & Hoppers…
Problem Solver
KWS designed a special live bottom hopper with a unique bridge breaker and screw feeder to meter the raw…
Read MoreBiosolids Load-Out Facility for Kitchener, Ontario, Canada
Problem Solver
KWS provided fully redundant systems from the centrifuges to the truck loading bays with two distribution…
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