# Project Report on Lime Processing Unit
## 1. Introduction
The lime processing unit is designed to produce quicklime (calcium oxide, CaO) and hydrated lime (calcium hydroxide, Ca(OH)₂) from limestone (calcium carbonate, CaCO₃). Lime has diverse applications in industries such as construction, agriculture, steel manufacturing, water treatment, and chemical processing. This report outlines the project details, including market potential, production process, machinery requirements, financial analysis, and environmental considerations.
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## 2. Market Potential & Demand
– Lime is a crucial raw material in multiple industries.
– Growing infrastructure development increases demand for construction lime.
– Agricultural lime is used for soil pH correction.
– Steel and chemical industries require high-purity lime.
– Water treatment plants use hydrated lime for purification.
Market Trends:
– Increasing urbanization boosts demand for cement and construction materials.
– Government initiatives for clean water supply enhance lime usage in water treatment.
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## 3. Manufacturing Process
A. Raw Material (Limestone)
– Limestone (CaCO₃) is the primary raw material.
– Should e high calcium content (>90% purity).
– Sourced from mines or suppliers.
B. Processing Stages
1. Crushing & Screening
– Limestone is crushed into small pieces (5–20 mm).
– Screened to remove impurities.
2. Calcination (Kiln Process)
– Crushed limestone is heated in a kiln at 900–1200°C to produce quicklime (CaO).
Reaction:
\( \text{CaCO}_3 \rightarrow \text{CaO} + \text{CO}_2 \)
3. Hydration (for Hydrated Lime Production)
– Quicklime is mixed with water to produce hydrated lime (Ca(OH)₂).
Reaction:
\( \text{CaO} + \text{H}_2\text{O} \rightarrow \text{Ca(OH)}_2 \)
4. Packaging & Storage
– Final product stored in moisture-proof bags or silos.
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## 4. Plant & Machinery Requirements
| Equipment | Purpose |
|———–|———|
| Jaw Crusher | Crushing limestone |
| Rotary Kiln | Calcination of limestone |
| Hydrator | Producing hydrated lime |
| Ball Mill | Fine grinding (if needed) |
| Bag