Sandustry Slag Burner: Residue Burning Guide

There is no confirmed machine officially named Slag Burner in the collected sources. Players use the phrase for the part of the production chain that burns Residue into Burnt Residue before it reaches a Kinetic Press. Treat it as a process, not a building name: move Residue out of the Shakers, expose it to fire in a contained area, and keep the resulting material separate.

Slag Burner Terminology

Current guides use Residue, Burnt Residue, and Kinetic Press. Older videos and player discussions may call the same materials slag or burnt slag, and an older asset name refers to a Kinetic Slag Press. Matching the current in-game names prevents the wrong material from entering the press line.

Search term	Current guide term	What it refers to
Slag Burner	Residue burning setup	The fire stage, not a verified standalone machine
Slag	Residue	The by-product created by processing Wet Sand in a Shaker
Burnt slag	Burnt Residue	The valid input for the Kinetic Press
Kinetic Slag Press	Kinetic Press	The impact machine used after burning

Residue Burning Chain

Every Wet Sand pixel processed by a Shaker becomes Residue, whether or not that same operation also releases Gold. Residue must therefore have an exit before the Shaker line runs continuously. When Residue meets fire, each pixel has a 25% chance to survive as Burnt Residue; the rest is consumed.

Stage	Input	Action	Output or checkpoint
Shaker	Wet Sand	Process the material	Residue always leaves the Shaker stage
Burn area	Residue	Expose it to fire	Some material survives as Burnt Residue
Kinetic Press	Burnt Residue	Drop it at least 25 blocks	Gold and Seed leave below the Press

This burn yield means the press line should be sized for substantially less material than enters the fire stage. Do not interpret disappearing Residue as a broken burner.

Ways to Ignite Residue

The collected material documents several approaches with different levels of automation. A Flamethrower works for a first manual test. A napalm-upgraded Rocket Launcher can ignite material at range. A Pyro Dispenser provides repeated flame bursts when supplied by an adjacent Thermal Buffer.

A community-documented passive setup traps Lava inside a Filter over a solid Block, then carries Residue across the Conveyor Belt above it. The Lava must already be contained before the input starts. The source describes creating movable Cinders by freezing Lava into Scoria and breaking it, then using direct Flamethrower fire to return Cinders to Lava.

Connect the Kinetic Press

Filter the burned output so only Burnt Residue reaches the drop shaft. It must fall onto the Kinetic Press from at least 25 blocks above. Material dropped from lower height, and any wrong solid, stays on the impact face and can stop later conversions. Leave the underside open for Gold and Seed.

The Press has no built-in Conveyor Belt to sweep its top. The collected guides recommend angled Launchers above a row of Presses to throw stagnant material toward a side opening. This clears contamination but cannot correct a short drop.

Slag Burner Troubleshooting

Symptom	Check first	Why
Shakers become buried	Residue exit	Every processed Wet Sand pixel creates Residue
Most Residue disappears	Nothing, if fire is active	Only 25% is expected to become Burnt Residue
Residue does not ignite	Contact with an active fire source	Passive heat and direct ignition are not interchangeable in every setup
Press top fills up	Material identity and fall height	Wrong input or a drop under 25 blocks does not convert
Press converts but output backs up	Space below the Press	Both Gold and Seed exit underneath

Sources Used

• Official Sandustry Wiki references listed by the collected guide
• IdoraAlphyGaming: Filters, Splitters, Kinetic Slag Press and Launchers