The preparation of absorbent

lime stone powder

for lime stone / gypsum flue gas deaulfuration （PGD） and its supplying schemes have been briefly presented

and technical comparison of these schemes being carried out. giving out main points for their selection. The dry and wet absorbent -milling technologies all are matured and reliable

and can satisfy the requirements of FGD systems. In the event of considering to supply desulfration agents for multiple FGD sets

or for a number of power plants

the priority can he given to select the dry preparation system. If the scale of power plant and the demand of time stone powder are smaller

it can be considered to purchase already - made products from outside.