CarbonBlue offers EcoLime, a patented, fully electrified lime production technology that operates at ambient temperature and can convert low‑grade calcium feedstocks such as steel slag, construction‑demolition waste, and low‑grade limestone into high‑purity hydrated lime. By eliminating fossil‑fuel combustion and enabling on‑site lime generation, EcoLime reduces emissions, waste handling costs, and supply‑chain length while improving margins for steel, pulp‑and‑paper, and construction industries.
Funding
$100K raised to dateRaised to date based on public sources. This may differ from the amount the company actually raised and is based only on what is publicly available on the internet.
FFFounders
Product
Problem
Traditional lime production relies on high‑temperature kilns that combust fossil fuels, releasing large amounts of CO₂ and other pollutants. This process also depends on high‑grade limestone, creating supply chain constraints and generating waste streams that are often landfilled.
Solution
CarbonBlue’s EcoLime technology replaces kiln combustion with a fully electrified process that operates at ambient temperature. By using low‑quality calcium‑bearing feedstocks—including steel slag, construction‑demolition waste, and low‑grade limestone—the system extracts high‑purity hydrated lime without fuel combustion. The process is compatible with intermittent renewable electricity, allowing start‑stop operation to take advantage of variable power prices. Produced lime meets stringent quality standards, enabling direct reuse on‑site or commercial sale while reducing emissions, waste handling, and feedstock costs. EcoLime thus unlocks circularity across multiple industries and lowers the carbon footprint of lime‑dependent value chains.
Target Audience
Primary customers are industrial producers that require large volumes of lime, such as steel manufacturers, pulp and paper mills, and construction material companies seeking to reduce emissions and waste while improving profitability.
Features
- Ambient‑temperature, fully electrified lime production eliminating fossil‑fuel combustion
- Ability to process diverse low‑grade calcium sources (steel slag, C&D waste, low‑grade limestone) into high‑reactivity hydrated lime
- Intermittency‑compatible operation that aligns with renewable energy supply and variable electricity pricing
- Consistently high purity lime with low metal contaminants, high whiteness index, and minimal residues for demanding applications
- On‑site lime generation reduces supply chain length, waste disposal costs, and improves margins for steel, pulp & paper, and construction sectors
- Zero pollutant emissions and reduced CO₂ footprint simplify permitting and regulatory compliance