6. RESULT AND DISCUSSIONS
1. Approximately 36 KL of pickling acid is used in pickling line.
2. 25 KL (approx.) of pickling acid which comes out after removing the impurities contains ferric particles and rest is
mixed with water.
3. Regeneration of 25 KL waste pickling liquor through Acid Regeneration Plant.
4. The remaining 9 KL acid which contains water is regenerated by evaporating the water from it.
5. Thus, approximately 35964 Litres of acid is regenerated from the above two processes.
6. Precipitated product from ARP line is used to form red oxide powder which is demanded by various paint industries
and iron industries.
7. CONCLUSION
From our research we concluded that regeneration of waste pickling acid is environmentally friendly and also reduce the
cost of using fresh acid again and again in pickling line. Regeneration process requires extra unit to be installed in a steel
plant which provides job opportunities, but, this also increases the overall budget of the company. The extra budget can be
overcome by selling the waste precipitated product i.e. iron oxide like red oxide powder at optimum price to various
demanding industries.