90mm Briquettes or 6mm Pellets: Which Is Right for Your Business?

If you're moving your business off coal or furnace oil, the biomass conversation eventually lands on one practical question: briquettes or pellets? Both are compressed, renewable, low-ash fuels — but their size difference isn't cosmetic. It determines how you feed your boiler, how much labour you need, how you store the fuel, and ultimately what it costs you to run.

Here's how a 90mm briquette and a 6mm pellet actually compare, so you can match the fuel to your equipment instead of the other way around.

The Core Difference: Size and Density

A 90mm briquette is a large, dense block or cylindrical log, produced by compressing coarser biomass — sawdust, agro-residue, groundnut shell — under high mechanical pressure. A 6mm pellet is a small, uniform cylinder made by first grinding biomass into fine particles and then extruding it through a die under heat and pressure, producing a much more compact, higher-density unit.

That single difference in size and manufacturing process shapes everything else on this list.

Point-by-Point Comparison

1. Feeding and automation Pellets are small and uniform enough to flow through augers and automated feed systems, giving boilers a steady, self-regulating fuel supply. Briquettes are typically loaded manually or via heavy-duty conveyors — they're not built for narrow automated feed lines, though large industrial boilers on moving grates handle bulk briquette feeding well.

2. Combustion behaviour Pellets ignite quickly and burn hot and clean, which suits automated boilers that need tight, responsive control. Briquettes burn slower and longer because of their larger mass, which means fewer reloads and more sustained heat — an advantage in continuous, high-demand industrial furnaces.

3. Moisture and consistency Pellets generally come in drier (around 8-10% moisture) and more dimensionally consistent, which supports more predictable, efficient combustion. Briquettes run slightly higher in moisture and can vary a bit more in shape and size batch to batch, though this rarely affects performance in large boilers.

4. Ash and emissions Both fuels burn far cleaner than coal, with low ash output. Pellets, because of their density and low moisture, tend to edge out briquettes marginally on ash and particulate consistency, though the practical difference is small for most industrial applications.

5. Handling, storage and transport Pellets' compact, uniform shape makes them easy to store in silos and transport efficiently — you get more energy per cubic metre of storage space. Briquettes, being bulkier, need more storage volume and can be more prone to cracking or breakage if handled roughly, though they tolerate rougher handling in industrial yards better than you'd expect.

6. Processing and cost Pellet production requires an extra grinding step and more precise machinery, which generally makes pellets a bit costlier to produce than briquettes. Briquettes require less processing of the raw material, which typically keeps their per-unit cost lower — a meaningful factor if you're running high fuel volumes.

7. Best-fit equipment Pellets suit automated boilers, smaller and mid-sized industrial systems, and any setup where consistent, hands-off feeding matters. Briquettes suit large industrial boilers, furnaces, and kilns — paper mills, sugar mills, textile and dyeing units — where manual or semi-automated loading is already the norm and burn duration matters more than automation.

Quick Guide: Which Fits Your Business?

If your priority is...	Consider
Automated, low-labour feeding	6mm pellets
Lower per-unit fuel cost at high volume	90mm briquettes
Long, sustained burns in a large furnace	90mm briquettes
Compact storage and easy transport	6mm pellets
Retrofitting an existing manually-loaded boiler	90mm briquettes
Upgrading to a modern automated system	6mm pellets

There's no universally "better" option — the right call depends on your boiler type, feeding system, storage space, and how much labour you want in the loop.

How Kamlesh Bioverse (KBV) Helps You Find the Right Fit

Choosing between briquettes and pellets isn't something you should have to figure out alone from a spec sheet. At KBV, we start by understanding your boiler or furnace setup, your current fuel consumption, and your feeding infrastructure — then recommend the format that actually works for your operation, not just the one that's easiest for us to supply.

Once you've settled on the right fit, we focus on what matters most day to day: a consistent, dependable supply chain.

• Quality control on every batch — consistent GCV, moisture, and sizing so what you're quoted is what shows up

• Reliable, scheduled deliveries built around your production calendar and storage capacity, so you're never caught short

• Both formats available — 90mm briquettes and 6mm pellets — so if your requirements shift as you scale or automate, we can move with you

• Direct sourcing and processing control, reducing the batch-to-batch variability that smaller, informal suppliers often struggle with

• A single point of contact for bulk and recurring orders, so procurement stays simple even as volumes grow

Whether you're weighing briquettes against pellets for the first time or looking for a more reliable supplier for what you already use, KBV can help you land on the right fuel format — and keep it coming.

Get in touch with Kamlesh Bioverse for a recommendation tailored to your equipment and a quote based on your monthly requirement.