Industry Overview
Calcium hydroxide, commonly known as hydrated lime, is an important industrial chemical used across a wide range of applications due to its low cost, relatively low toxicity, and effective alkaline properties. One of its most significant applications is in water and sewage treatment, where it acts as a flocculant by forming a fluffy charged solid that helps remove fine suspended particles, resulting in clearer water. It is also widely used in fresh-water treatment to increase the pH of acidic water, reducing the risk of corrosion in pipelines while providing a self-regulating effect that helps prevent excessive pH elevation.
In the paper industry, calcium hydroxide serves as an intermediate in the production of sodium hydroxide through the causticizing stage of the pulp manufacturing process. This step is essential for chemical recovery and efficient pulp production. In addition to its industrial applications, calcium hydroxide is traditionally added to areca nut and betel leaf preparations, where it helps maintain alkaloid stimulants in a chemically available form for sublingual absorption. Owing to its versatility and broad industrial utility, calcium hydroxide remains an important raw material in environmental management, paper manufacturing, and several other processing industries.
Cost Estimation
| Particular | Value |
|---|---|
| Plant Capacity | 100 MT/Day |
| Land & Building (6880 sq.mt.) | US$ 7.66 Lac |
| Plant & Machinery | US$ 5.33 Lac |
| Working Capital for 6 Months | US$ 10.44 Lac |
| Total Capital Investment | US$ 24.00 Lac |
| Rate of Return | 20% |
| Break Even Point | 61% |
Content Index
- INTRODUCTION
- USE/APPLICATION/ADVANTAGES
- PROPERTIES/TYPICAL SPECIFICATIONS
- ASTM TESTING METHODS
- MARKET OVERVIEW
- RAW MATERIALS
- FORMULATION
- CHEMISTRY OF FORMULATION PROCESS
- PROCESS STEPS - HYDRATED LIME PRODUCTION
- CRITICAL PROCESS CONDITION/REQUIREMENTS
- ENGINEERING DESIGN CONSIDERATIONS
- WASTE GENERATION & MANAGEMENT/GREEN BELT
- SEWAGE AND WASTE WATER EFFLUENT
- UTILITIES PER MONTH (ESTIMATED)
- PLANT & MACHINERY BROADLY USED FOR THE PROCESS
- PLANT & MACHINERY SUPPLIER/TURNKEY CONSULTANTS
- PRINCIPLES OF PLANT LAYOUT
- PLANT LOCATION FACTORS
- PRELIMINARY LAYOUT
- HEALTH SAFETY & ENVIRONMENT
- ANTICIPATED ENVIRONMENTAL IMPACTS
- MITIGATION MEASURES (PROPOSED)
- SAFETY & ENVIRONMENT MANAGEMENT PLAN
- SAFETY & OCCUPATIONAL MEASURE
- PROJECT IMPLEMENTATION MANAGEMENT
- PROPOSED IMPLEMENTATION SCHEDULE
- PROJECT FINANCIALS
- CONCLUSIONS
Appendix
- 01. PLANT ECONOMICS
- 02. LAND & BUILDING
- 03. PLANT AND MACHINERY
- 04. OTHER FIXED ASSESTS
- 05. FIXED CAPITAL
- 06. RAW MATERIAL
- 07. SALARY AND WAGES
- 08. UTILITIES AND OVERHEADS
- 09. TOTAL WORKING CAPITAL
- 10. TOTAL CAPITAL INVESTMENT
- 11. COST OF PRODUCTION
- 12. TURN OVER/ANNUM
- 13. BREAK EVEN POINT
- 14. RESOURCES FOR FINANCE
- 15. INSTALMENT PAYABLE IN 5 YEARS
- 16. DEPRECIATION CHART FOR 5 YEARS
- 17. PROFIT ANALYSIS FOR 5 YEARS
- 18. PROJECTED BALANCE SHEET FOR (5 YEARS)
Frequently Asked Questions
Calcium hydroxide is widely used in water treatment, paper manufacturing, and several industrial processes. It functions as an alkaline chemical that helps remove suspended impurities from water, adjusts pH levels to reduce pipe corrosion, and serves as an intermediate during the production of sodium hydroxide in pulp manufacturing. It is also used in certain traditional applications involving areca nut and betel leaf preparation.
Calcium hydroxide improves water quality by promoting the removal of fine suspended particles and adjusting water pH. During treatment, it forms a charged floc that captures small impurities, making them easier to separate from water. It is also commonly used to neutralize acidic water, helping protect pipelines and treatment infrastructure from corrosion while maintaining effective process control.
Calcium hydroxide is used as an intermediate in the causticizing stage of pulp production. During this process, it helps convert process chemicals required for the manufacture of sodium hydroxide, supporting efficient chemical recovery and pulp processing. This role makes it an important material in integrated paper manufacturing operations.
Key considerations include raw material availability, process design, plant layout, utilities, environmental management, and safety requirements. A comprehensive project evaluation should also assess machinery selection, waste management practices, implementation planning, and financial feasibility to ensure efficient and compliant plant operations.
Environmental management focuses on controlling waste generation, handling wastewater, and implementing mitigation measures throughout plant operations. Effective process design, proper effluent management, and adherence to health, safety, and environmental practices help minimize operational impacts while supporting sustainable industrial production.
A detailed project report provides the technical and financial foundation for project planning and execution. It typically covers process technology, raw materials, engineering considerations, utilities, plant layout, environmental management, implementation planning, and project economics, enabling informed investment and operational decisions.
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