Process optimization method for sintering vanadium-titanium magnetite concentrate by large-scale sintering machine

The invention provides a process optimization method for sintering a vanadium-titanium magnetite concentrate by a large-scale sintering machine. According to the invention, the method comprises the following steps that: a sintering process is constructed into a sintering system that includes input, an intermediate link and output; ore return quantity, feeding quantity, material layer thickness, machine speed, and material temperature and the like are selected and are taken as adjustable parameters; index parameters of a sintering system are improved by a plurality of phases that are connectedsequentially, wherein each phase among the plurality of phases comprises multi-group records that record adjustable parameters and the index parameters that are corresponding to the adjustable parameters during sintering production and a record in which index parameters satisfy a target range of the present phase is selected from the multi-group records; adjustable parameters at the next phase are controlled on the basis of a mean value of adjustable parameters of the last phase among the plurality phases, wherein the adjustable parameters of the last phase are in a record and satisfy a target range of the last phase and the target range of the next phase is not inferior to that of the last phase. According to the invention, index parameters including a utilization coefficient, a drum index and low solid fuel consumption and the like in the sintering process are improved.