Pneumatic Machine Flux Injection for Molten Aluminum
Flux works where it touches the metal, not where it lands. Thrown on the surface, much of a flux addition burns, dusts or floats without ever reaching the oxide it was meant for. A pneumatic injection machine carries granular flux in a stream of dry inert gas down a lance and releases it below the melt line, so it disperses through the metal instead.
Chelora Chemicals is a pneumatic flux injection machine supplier and sourcing partner serving aluminum foundries and casthouses across the United States. We supply cart-mounted and mobile units with lances to suit your furnaces, and the granulated flux they run on.
- Product type
- Flux injection machine
- Power
- Pneumatic — compressed gas
- Carrier gas
- Dry nitrogen or argon
- Flux
- Granular, injection-sized
- Delivery
- Lance below the melt line
- Format
- Cart-mounted or mobile
- Metering
- Adjustable flux feed
- Lances
- Matched to furnace depth
- Documentation
- Operating manual
Note: the flux and the machine are one system. Injection-sized granules with low fines feed cleanly; powder and broad-size grades bridge and pack.
How flux injection works
Metered granules ride a stream of dry inert gas to below the melt surface.
Why it matters: surface fluxing wastes flux. Injection puts it in contact with the metal, which is why injected additions can be smaller
What a pneumatic machine is and does
A pneumatic flux injection machine is a hopper, a metering unit and a lance, driven by compressed gas. Granular flux is metered from the hopper into a stream of dry nitrogen or argon, carried down the lance and released below the melt surface, aimed at the part of the furnace that needs treating.
The point is contact. Flux injected under the metal disperses through it and meets the oxide films and inclusions directly, instead of reacting at the surface. Units are cart-mounted to wheel between furnaces or built as compact mobile units with a hand-held wand, and pneumatic-only designs run without an electrical supply at the furnace.
What to tell us when you order
- Your furnaces. Type, size and metal depth set the lance length and flow.
- Your flux. Injection needs a sized, low-fines granular grade.
- Your gas supply. Dry nitrogen or argon, at the pressure the unit needs.
- How many furnaces it serves. Mobile units move between them; fixed units stay put.
Handling character
Lances must be dry and preheated before entering the melt, and carrier gas must be dry. Details in the Safety section.
| Parameter | Typical value |
|---|---|
| Hopper capacity | Per model |
| Flux feed rate | Adjustable, per model |
| Carrier gas | Dry nitrogen or argon |
| Lance length and material | Per furnace depth |
| Format | Cart-mounted or mobile |
| Controls | Pneumatic, per model |
Important: the figures above are indicative of commercial material and are offered for planning only. The batch certificate of analysis is the governing document.
| Property | Value |
|---|---|
| Equipment type | Flux injection machine |
| Operation | Pneumatic |
| Carrier gas | Dry inert gas |
| Flux form | Granular, injection-sized |
| Delivery point | Below the melt surface |
| Mobility | Cart or hand-held wand |
| Electrical supply | Not needed on pneumatic-only units |
Capacities, feed rates, gas consumption and lance options vary by model and are set out in the producer's specification and manual. Treat the table as orientation, not as a specification.
Where pneumatic machines are used
Wherever flux needs to reach the metal, not just the surface.
Reverberatory & holding furnaces
Cleaning and drossing by injecting flux into large furnace baths.
- Long lances
- Cart-mounted units
- Granular flux supplied
Foundry ladles & crucibles
Smaller melts treated with compact mobile units and hand-held wands.
- Mobile units
- Low-flow models
- Easy changeover
Alkali & magnesium removal
Injecting refining salts as a solid-flux alternative to chlorine gas.
- Alkali remover
- Magnesium remover
- Feed rate matched
Dust & fume reduction
Sub-surface delivery and granular flux cut the dust of hand-thrown powder.
- Granular grades
- Lower additions
- Cleaner furnace area
Consistent treatment
Metered additions make fluxing repeatable from shift to shift.
- Adjustable metering
- Set procedures
- Operator guidance
Scheduled supply
Foundries use these continuously, so steady call-off supply matters more than spot price.
- Annual contracts with call-off
- Price held across the contract
- Second source held in reserve
Delivered to US plants and ports
We ship pneumatic flux injection machines to nominated delivery points across the United States. The regions below are destinations we serve — Chelora Chemicals is a sourcing and supply partner, not a US manufacturer, and does not hold US stock.
Gulf Coast
The largest US chemical cluster, and the usual entry point for bulk consignments.
- Houston & Galveston, TX
- New Orleans & Baton Rouge, LA
- Mobile, AL
Northeast
Container and bulk delivery into the mid-Atlantic and New England manufacturing belt.
- Newark & Elizabeth, NJ
- Philadelphia, PA
- Boston, MA
Southeast
Port-side delivery for the Carolinas, Georgia and Florida processing plants.
- Savannah, GA
- Charleston, SC
- Jacksonville, FL & Norfolk, VA
Midwest & Great Lakes
Inland rail and truck forwarding from the nearest coastal port to the industrial Midwest.
- Chicago, IL
- Detroit, MI
- Cleveland & Columbus, OH
West Coast
Pacific routing for West Coast processors and formulators.
- Los Angeles & Long Beach, CA
- Oakland, CA
- Seattle & Tacoma, WA
Southwest & Mountain
Inland delivery to interior states, forwarded from the Gulf or Pacific gateway.
- Dallas–Fort Worth, TX
- Phoenix, AZ
- Denver, CO
Importing into the United States
A flux injection machine is equipment, not a chemical, and is outside TSCA import certification. We confirm the import classification and any documentation your broker needs before the first shipment, and supply the producer's operating manual with the machine.
Which party carries that duty follows the Incoterm. On FOB, CFR or CIF terms it is usually the US buyer; on DDP terms it can be the seller or its agent. Safety data sheets and labels are supplied to OSHA's updated Hazard Communication Standard, and the non-dangerous goods transport documentation is prepared before booking.
| Item | How it works |
|---|---|
| Delivery points | Any nominated US plant, terminal or port of discharge |
| Incoterms quoted | FOB · CFR · CIF · DDP |
| Importer of record | Agreed in writing before the first shipment |
| TSCA certification | Section 13 positive certification filed at entry |
| Documentation | Batch COA, SDS, packing list, certificate of origin |
| Pack formats | Crated machine with lances and spares |
Note: regional coverage describes where we deliver, not where we hold inventory. Lead time depends on producer scheduling and ocean transit to your nominated US port — we confirm both in the quotation.
How we supply pneumatic flux injection machines
Chelora Chemicals is a pneumatic machine supplier and sourcing partner, not a manufacturer. We place your order with a qualified producer whose unit fits your furnaces and how many of them it has to serve.
We treat the machine and the flux as one order. A good injector fed with the wrong granule size bridges and stalls, so we match the flux grade to the machine before either ships.
And we ask about your gas supply. The carrier gas has to be dry; moisture carried into molten aluminum is a hazard, not just a quality problem.
- Unit matched to your furnaces. Lance length, flow and mobility specified to fit.
- Flux matched to the machine. Injection-sized granules with low fines.
- Dry carrier gas specified. Nitrogen or argon, never damp air.
- Operating manual and spares list. Supplied with the machine.
- Lances and wear parts on call-off. So the unit keeps running.
- Traceable to the producing plant. Model and serial documentation supplied.
Crated with lances and spares
Machines crated for ocean freight, with lances, spares and documentation.
Wooden crate
Machine crated and braced for ocean freight.
Packed separately
Lances packed to protect them from bending and impact.
Wear parts
Recommended spares packed with the machine.
Manual and drawings
Operating manual and parts list supplied.
Incoterms to suit you
Quoted on the Incoterm your purchasing team works to.
Flux and lances
Granular flux and lances released against your schedule.
Gas, lances and molten metal
A flux injection machine brings compressed gas and a steel or ceramic lance to the surface of molten metal. The hazards that matter most are moisture in the lance or gas — water reaching molten aluminum can erupt — splashing as gas enters the melt, and asphyxiation risk from nitrogen or argon in poorly ventilated or confined areas. Follow the producer's manual and your own foundry safety program.
Classified hazards
H₂ODamp lances or wet gas in molten aluminum: steam eruption risk.GasCompressed gas lines: inspect hoses and fittings before use.N₂ · ArInert gases displace oxygen: ventilate; never use in confined spaces without controls.SplashGas entering the melt causes splashing: face shield and protective clothing.FluxFollow the flux SDS for the grade being injected.
Dry lance, dry gas. Preheat the lance above the melt before immersion, use only dry nitrogen or argon as carrier gas, and start gas flow before the lance enters the metal so it cannot fill with melt. Never use compressed shop air, which carries moisture and oxygen.
Storage
Store the machine indoors, dry and covered. Keep the hopper sealed and empty when idle, because granular flux left in it absorbs moisture and cakes. Store lances dry.
Handling
Inspect hoses, fittings and the lance before every use. Preheat the lance, start gas flow, then immerse. Wear a face shield, heat-resistant gloves and protective clothing. Follow the producer's operating manual.
Transport
The machine ships as non-dangerous goods; gas cylinders are not supplied with it. We confirm packaging and documentation for your destination before booking.
Every batch, documented
We verify documentation before dispatch so there are no surprises at your incoming-goods bench.
Specification agreed
Material, dimensions and drawing confirmed against your equipment and metal before order placement.
Producer quality checks
The producing plant checks dimensions and material properties on each lot before release.
Documentation review
Dimensional and quality certificates checked by our desk before the shipment is booked.
Traceable dispatch
Each shipment is traceable to its producing lot, with full chain-of-custody records on request.
Why injection uses less flux
Hand fluxing asks a lot of a handful of salt. Thrown on the surface, part of it reacts with the atmosphere, part is lifted as dust by furnace draft, and part sits on top of the dross without ever reaching the metal underneath. Operators compensate by adding more.
Injection changes where the flux starts. Carried below the melt line by inert gas, it disperses through the metal and meets oxide films and inclusions where they are, then rises with them into the dross. More of each kilogram does useful work, which is why injected additions can be smaller.
The machine is only half of it. The other half is a granular flux sized for injection, with few fines and low moisture, so it meters steadily and does not pack in the feeder. We supply both, and match them.
We do not publish operating process parameters here; this is background only. Full technical documentation accompanies every shipment, and any process-specific detail you need is best confirmed directly with our technical desk.
| Equipment | Pneumatic flux injection machine |
|---|---|
| Carrier gas | Dry nitrogen or argon |
| Flux | Injection-sized granules |
| Delivery | Below the melt line |
| Format | Cart-mounted or mobile |
| Key safety point | Dry lance, dry gas |
Related foundry & melt-treatment products
Fluxes and equipment that work with the machine, from the same desk.
Pneumatic flux injection, answered
What does a pneumatic flux injection machine do?
Why inject flux instead of adding it by hand?
What carrier gas is used?
What flux does it need?
Does it need an electrical supply?
Cart-mounted or mobile unit?
Can it inject alkali and magnesium removal fluxes?
What are the main safety precautions?
How should the machine be stored?
Do you manufacture flux injection machines?
Get a quote on pneumatic flux injection machines
Tell us your furnace types and sizes, metal depth, the flux you use and your gas supply. We will match a unit and lance, and the granular flux to run in it.