ALUMINA FROM BAUXITE
[EIRI/EDPR/0731] J.C.:9343
High Alumina Cement is a rapid-hardening cement made by fusing at 1,500o to 1,600o C (2,730o to 2,910oF) a mixture of bauxite and limestone in a reverberatory or electric furnace or in a rotary kiln. It also can be made by sintering at about 1,250oC (2,280oF). Suitable bauxites contain 50 to 60 percent alumina, up to 25 percent iron oxide, not more than 5 percent silica, and 10 to 30 percent water of hydration. High Alumina Cement is produced by preparing raw material consisting of pplicablebauxite and limestone, burning the raw material and grinding into cement
High Alumina Cement can resist a high temperature at which a relative high temperature at which a relative high strength still remains.Its refractoriness increases with the content of CA2. Therefore it is suitable to make refractory concrete as a binder. Depending on the refractory aggregate (fireclay, high aluminum) used, the refractory concrete made of the cement can be used below 1400oC.
Although the early strength of High Alumina Cement develops rapidly,its later strength decreases. The rates of crystabls conversion and strength reduction relates to atmospheric temperature and humidity. In the saturated steam at 35oC. The conversion is complete in 28d and the strength decreases to the minimum, in the dry air below 20oC. The conversion is very slow. So the HAC is not suited to use in building engineerings. If it is used in construction, matters needing attention given. In order make use of strong points of HAC and overcome its weak point, cement scientists in the world have developed various modified HAC and overcome its weak point, cement scientists in the world have developed various modified HAC series: self-stressing cement, expansive cement, impermeable non-shrinkage cement,rapid hardening high strength aluminate cement. Special rapid hardening setting-controlled aluninate cement and so on. These alumina cements with special properties are used in rush repairs,quick construction antipermeability, leakage stopping, resistance to sulfate attack, winter constructions etc. We can supply some derivative products of alumina cement series
according to requirements of special engineerings
COST ESTIMATION
Plant Capacity 20 MT/Day
Land & Building (10000 sq.mt.) Rs. 65.25 Lacs
Plant & Machinery Rs. 1.06 Cr
Working Capital for 3 Months Rs. 1.12 Cr
Total Capital Investment Rs. 3.36 Cr
Rate of Return 40%
Break Even Point 60%
CONTENTS
1. INTRODUCTION
2. PROPERTIES OF HIGH ALUMINA CEMENT
3. CHEMICAL RESISTANCE
4. COMPOSITION AND MINERALOGY OF HIGH-ALUMINA CEMENT
5. USES OF HIGH ALUMINA CEMENT
6. THE SETTING OF HAC
7. B.I.S. SPECIFICATION
8. MARKET SURVEY
9. HIGH ALUMINA CEMENT MANUFACTURERS & EXPORTERS
10. RAW MATERIALS
11. HIGH ALUMINA CEMENTS
12. MANUFACTURING PROCESS
13. PROCESS FLOW SHEET FOR HIGH ALUMINA CEMENT
14. PLANT LAYOUT FOR HIGH
ALUMINA CEMENT MANUFACTURING UNIT
15. SUPPLIERS OF MACHINERY FOR HIGH ALUMINA CEMENTS
16. SUPPLIERS OF RAW MATERIALS
17. RAW MATERIAL REQUIREMENT
APPENDIX – A:
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)