Roasted Nakumatt — Bhavnagar's Toughest Kiln-Roasted Clay for Industrial Use

The difference is in the kiln. Standard roasted clay spends 45–60 minutes in the rotary kiln at a single temperature zone. Nakumatt spends 75–90 minutes across two temperature zones: a higher initial zone that drives off moisture and begins pore development, and a slightly lower finishing zone that anneals the granule surface, building a harder outer shell without collapsing the internal pore structure. The result is a granule that is measurably harder in crush testing while retaining 300%+ absorption — a combination that single-zone roasting cannot achieve.

After roasting, Nakumatt goes through an additional screening and dedusting step that removes any granules that cracked during cooling. This adds cost but significantly reduces the dust complaints that plague industrial absorbent buyers who pour material from bags onto factory floors or oil spill sites.

East African supply chains are long and rough. A container of roasted clay leaving Mundra Port spends 12–18 days at sea, then sits at Mombasa port for 3–7 days for clearance, then travels 400–800 km by truck to Nairobi, Kampala, or Kigali. At each transfer point, bags are moved — and each move generates dust if the granules are weak. Nakumatt's extra hardness means the material that arrives at the buyer's warehouse in Nairobi is essentially the same as what left our factory in Bhavnagar.

We have supplied Nakumatt to Kenyan buyers since 2021, typically 2–3 containers per month. The repeat order rate is over 90% — buyers reorder because the material performs, not because they have no alternative. Competing suppliers shipping softer roasted clay from Mundra or Kandla often lose customers after the first or second container when the buyer discovers 15–20% of the material has turned to dust.

While cat litter manufacturing is a significant market for Nakumatt, industrial absorbent applications are equally important. Oil and chemical warehouses use Nakumatt granules for spill containment because the hard granules provide traction underfoot while absorbing hydrocarbons. Workshop and factory floor maintenance programmes buy Nakumatt in 25 kg bags for daily sweeping compound use. Environmental remediation contractors use it for containing and absorbing chemical spills during site cleanup operations.

In each of these applications, granule hardness is the key performance metric — soft granules turn to mud when they absorb oil, creating a worse cleanup problem than the original spill. Nakumatt's hard structure maintains granule integrity even when saturated, making spent material easier to sweep and dispose of.