Chemicals,
handled safely.
Stainless steel and alloy conveying systems engineered for chemical and fertilizer plants — corrosion-resistant, dust-tight, and ATEX-ready for the most demanding duties.
Corrosion-resistant, dust-tight — built for chemical duty.
At Stellex, we engineer stainless steel and alloy screw conveyors for chemical and fertilizer plants where corrosion, abrasion, dust, and safety are mission-critical. From urea and NPK to pigments, catalysts, polymers, and biomass feedstocks, our enclosed systems deliver clean, reliable transfer with precise feeding and low maintenance.
Every system is custom-designed to your material, process conditions, and compliance requirements — fully documented and backed by a complete spares catalogue.
Six trust markers.
What chemical and fertilizer plants rely on us for — on every project, from quotation through commissioning.
Corrosion & wear resistance
SS 304/316 and specialty alloys with hardened flights and liner options for chemically aggressive or abrasive media.
Dust-tight, safer operation
Fully enclosed designs with sealed bearings, purge options, and anti-static liners for hazardous powders.
ATEX & explosion-proof
Zone-rated designs with anti-static components, ATEX-compliant drives, and purge sealing for explosive dust environments.
Custom-built
Screw geometry, pitch, and alloy chosen for your material — from urea granules to ultra-fine carbon black.
Process-ready integration
Custom inlets/outlets, VFD control, and metering accuracy for reactors, dryers, mixers, and bagging lines.
Compliance & documentation
ATEX/NFPA options, ISO-aligned QA, and material traceability to support EHS and audit requirements.
Three categories. One discipline.
Broad application reach across the chemical sector — corrosion-resistant, dust-tight, and documented.
Corrosive & fertilizer chemicals
- Safe handling of urea, NPK, potash, and ammonium nitrate
- Alloy builds with continuous welds and polished internals
- Gas-tight sealing for odorous or hazardous streams
Hazardous & explosive powders
- Enclosed conveying with extraction ports for fine powders
- Anti-static liners and purge sealing
- ATEX/NFPA design for zone compliance
Biofuels & biomass
- Variable-pitch flights for density swings in feedstocks
- Wear-resistant liners for abrasive biomass materials
- Jacketed screws for integrated drying or heating
Eight sub-sectors. Explore the detail.
From agrochemicals and biofuels to carbon black and specialty chemicals — click any sector for applications, features, and materials handled.
Handling of fertilizers, micronutrients, and crop-protection powders and granules. Solutions include enclosed conveyance, dust collection at transfer points, and accurate batching.
- Safe handling of pesticides, herbicides, fertilizers (urea, NPK, potash, ammonium nitrate)
- Fertilizer mixing lines and seed coating plants
- Micronutrient and crop-protection powders/granules
- Easy integration with bagging and silo systems
- SS 304/316 screw conveyors for corrosion and dust control
- Fully enclosed, explosion-proof designs (ATEX available)
- Accurate batching and mixing
- Anti-stick liners for moisture-prone materials
Urea, NPK, ammonium nitrate, potash, micronutrients, pesticides, herbicides
Biomass feedstock receiving, drying integration, and safe powder transfer with explosion mitigation for starches and fine organics.
- Biomass feedstock receiving and pre-processing
- Pellet feeding and biomass handling
- Waste-to-energy and pellet plant conveyors
- Handling of agro-waste, wood chips, rice husk, bagasse, and chemical binders
- Abrasion-resistant flights for harsh feedstocks
- Sealed bearings and wear-resistant UHMW liners
- Jacketed conveyors for drying or heating
- Variable-pitch flights for density swings
Biomass, agricultural waste, pellets, chemical catalysts, binders
Pigment and extender handling (TiO₂, CaCO₃, talc) with sealed bag-dump, bin vent filtering, and blend uniformity controls.
- Pigment powder and extender handling (TiO₂, CaCO₃, talc)
- Paint base material transfer
- Powder feeding for mixing and blending
- Polished SS 316 internals to reduce contamination
- Sealed, dust-tight design
- Quick-disassembly covers for color change cleaning
- Anti-static liners for fine powders
Titanium dioxide, iron oxides, talc, pigment powders, dyes
Elastomer crumb and powder transfer, anti-bridging flow aids, and mixer feeding with minimal material degradation.
- Handling sticky rubber compounds, carbon black, and elastomer additives
- Feeding mixers in tire and rubber manufacturing
- Compounding lines for rubber chemicals
- Anti-stick flights and easy-clean surfaces
- Abrasion resistance — hardened or hardfaced flights
- Fully enclosed, dust-tight design
- ATEX/anti-static options for hazardous powders
Carbon black, rubber compounds, elastomer powders, additives
High-purity transfer with contamination control, contained charging, and CIP-friendly equipment options.
- High-purity transfer of catalysts, performance additives, coating chemicals
- Corrosive and hazardous specialty product handling
- Alloy construction for corrosion and hazardous duty
- Sealed, contamination-proof systems
- Jacketed conveyors for temperature control
- Gas-tight sealing for odorous or hazardous streams
Catalysts, specialty additives, performance chemicals, coating agents
Abrasive, ultra-fine material handling — wear-resistant screws, low-velocity conveying, and robust filtration to control airborne dust.
- Carbon black feeding for rubber, pigment, and plastics
- Tyre compound mixing lines
- Pigment loading systems
- Wear-resistant, hardened flights
- Anti-static liners and coatings
- Fully enclosed, dust-tight construction
- Integrated dust collection
Carbon black — ultra-fine and abrasive powders
Cohesive fines (silica, clays) with deaeration, mass-flow hoppers, and precise loss-in-weight feeding.
- Precise handling of cohesive, flow-resistant powders
- Loss-in-weight feeding
- Air-assisted conveying for lightweight materials
- Gentle conveying, air-assist, and deaeration
- Mass-flow hoppers and integrated dust collection
- Sealed systems for safety and cleanliness
Silica, clays, food additives, pharmaceutical powders, pigments
Additives and fillers (starch, kaolin) bulk storage, pneumatic transfer, and point-of-use dust control.
- Bulk additives and fillers (starch, kaolin)
- Pulp transfer and sludge handling
- Recycled paper processing
- Moisture-resistant and corrosion-proof construction
- Low-maintenance bearings and easy-cleaning design
- Pneumatic transfer and dust control integration
Starch, kaolin, paper pulp, recycled paper, fillers
Sixteen materials. Daily.
A short list — we also build for materials not shown here. Tell us what you're handling.
- 01Urea
- 02NPK
- 03Ammonium Nitrate
- 04Potash
- 05Iron Oxides
- 06Soda Ash
- 07Carbon Black
- 08Polymer Powders
- 09Acidic & Alkaline Additives
- 10Catalysts
- 11Pigments
- 12Specialty Additives
- 13Pesticides
- 14Herbicides
- 15Resins / Plastics
- 16Paper Pulp
