METHOD FOR PRODUCING CEMENT CLINKER, METHOD FOR PRODUCING CEMENT AND METHOD FOR PROCESSING ORGANIC SLUDGE AND CONSTRUCTION BASED WASTE PLASTIC

摘要

To provide a method for producing a cement clinker capable of suppressing generation of coating in a method for producing a cement clinker in which construction based waste plastic is added to a calcination step.SOLUTION: There is provided a method for producing a cement clinker which comprises: a calcination step of calcining a raw material for a cement clinker to produce a cement clinker; and a reduction step of reducing a sulfur component contained in a mixture obtained by mixing construction based waste plastic and an organic sludge containing anaerobic bacteria for generating hydrogen sulfide from sulfur oxide by fermentation and reducing the water content of the mixture, wherein the mixture obtained in the reduction step is added to the calcination step. There is provided a method for producing a cement clinker in which in the reduction step, the mixture is preferably is fermented by aerobic bacteria after fermentation by anaerobic bacteria. There is provided a method for producing a cement clinker in which the reduction step is preferably carried out until the water content of mixture is 40 mass% or less.SELECTED DRAWING: Figure 1