Plastic Dri-ash Plant

Every sponge iron plant using coal as reductant in a rotary kiln creates a waste, which basically consists of coal char and other inorganic oxides.

This waste char, which is also sometimes called DRI ash, necessarily must have a minimum quantity of carbon in it in order to prevent re-oxidation of the freshly produced sponge iron at the discharge end of the rotary kiln. The carbon serves to maintain a reducing atmosphere till the end of the process

The waste is separated from the product DRI using magnetic separation. The DRI is the saleable product and the ash/char is a waste product. In some plants. In some plants, this waste is sold to local brick kilns for use in firing bricks (but only in the dry season).

The carbon bearing char has a fixed carbon content of between 40 and 50% and has useful fuel value. This can be gainfully employed I all boilers, which accept such fuel, such as fluidized bed boilers. It pays therefore to separate the char and utilize the fuel. It also pays from the ecological point of view in that wastes are converted into useful fuel.

The calorific value of the segregated product will be significantly higher and will greatly reduce fuel requirement.

The wear and tear of all your combustion equipment will go down.

There will be the lower periodcity of the maintenance cycle due to lower ash content. Shut downs are very expensive.

Wethouty our system the fluidized bed gets heavy and has dverse effect on the life of pressure parts

inside the fluidized bed boiler.

The size of the boiler required reduces and production and productivity of existing boiler will increase.

To our estimate the pay back period of such technology is very low.

It pays from the ecological point of view in that wastes are converted in to useful fuel.