Hazardous waste calorific value and stability difference is bigger, disposal process which not only have to guarantee completely burnt waste, but also to consider the full use of waste their own calorific value, must grope for different waste into kiln position, into the kiln way. With the increase of hazardous waste types and scale increases, should actively explore the use of cement rotary kiln disposal of garbage wastes of exploration and practice experience.
The fuel for this may be gas, oil or pulverized coal plant.Today‘s welcome experts explain the WaiReShi oxidation of rotary kiln technical background, use iron powder production magnetic materials with iron oxide red oxidation, need after high temperature oxidation process, is only the oxidation heating equipment is with the pro-duction rotary kiln, because the rotary kiln stove can”t satisfy the pro-duction oxidation atmosphere, and fuel directly and the heated oxidation material contact, has caused the pollution of furnace materials, make the lime rotary dryer lower yields and greatly influence the quality of the products.The use of cement rotary kiln processing garbage wastes and some technical problems need to solve. First of all, waste composition complex, their own calorific value difference is very big, in continuous disposal process often causing the innovation “by fits and starts” phenomenon, the kiln regime stability have influence.
The material to be processed is fed into the upper end of the cylinder. As the cement rotary kiln rotates, material gradually moves down towards the lower end, and may undergo a certain amount of stirring and mixing. Hot gases pass along the kiln, sometimes in the same direction as the process material (co-current), but usually in the opposite direction (counter-current). The hot gases may be generated in an external furnace, or may be generated by a flame inside the kiln. Such a flame is projected from a burner-pipe (or ’firing pipe‘) which acts like a large bunsen burner.
