Steel plant on the process of manufacturing steel emits and produces several harmful gases, liquid and solid wastes. Waste produced may be hazardous and non – hazardous in nature depending upon the characterization and properties of the waste. Furthermore, different waste generated is disposed in the environment. Disposal of the waste is done in a very scientific way, in the steel industry such that these discharges do not contaminate and damages inland waters, environment, air quality, country side, food, human settlement and even flora and fauna. These wastes are classified into three different basic categories:
a) Wastes which are not hazardous and recovery and recycle and reuse of valuables in it could be done successfully.
b) Wastes which are hazardous in nature and must be treated suitably.
c) Wastes which are not hazardous but recovery recycle and reuse may not be economical.
According to these, it is better to dispose the solid waste with a impact crusher.
Disposal of blast furnace slag: It is estimated that a relatively small percentage of the blast furnace slag generated is disposed of in landfills, dump yard and may be further reused as per the condition.
Disposal of steel slag: While most of the furnace slag is recycled for use as an aggregate, excess steel slag from other operations is Pollution Sources and Prevention in the BOF Slag is a major component of the waste produced in BOFs. Because of its composition, this slag, unlike that from the blast furnace, is best used as an additive in the sintering process. As its metallic content is lower, it does not make a good raw material for the construction industry these usually are sent to landfills for disposal as well as in the dump yard. On an average 1500 ton/ month of fly ash is being generated by both the power plant.
The dry fly ash collected in the ESP is disposed to ash pond in the slurry form by adding water in the dry ash. The filled up ponds are excavated and filled in the low-lying area. After filling the pond, the top surface is covered with sweet soil or slag to protect it from becoming air- borne. Presently few brick manufacturer are being explored who are regularly lifting the dry fly ash from the ESP for brick manufacturing, to enhance the ash utilization.

Cement making machine :
Vibrating screen :