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

Abstract

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.

Description

technical field [0001] The invention relates to the technical field of sintering, and more specifically relates to a process optimization method for sintering vanadium-titanium magnetite concentrate by using a large-scale sintering machine. Background technique [0002] At present, the structure of blast furnace charge at home and abroad is basically "high alkalinity sinter + acid pellet + lump ore". With the shortage of resources, natural lump ore for blast furnace smelting is less and less, while pellets of the same grade The price is much higher than that of sintered ore, so increasing the material used for sintered ore and reducing the material used for pelletized ore has become one of the main ways to reduce the cost of blast furnaces, and it is even more important to increase the production capacity of sintered ore. However, the lack of sinter production capacity is a restrictive link that has long plagued the large-scale production of iron and steel companies, and the...

AI Technical Summary

Problems solved by technology

[0004] (1) After the completion and production, the main work in the stage of reaching production capacity is to improve the design, get through the process, repair and eliminate defects, and realize the normal operation of production. The process parameters have not been optimized, new technologies and processes are not used well, and production is not good. Stablize

[0005] (2) There are many equipment accidents, large-scale equipment accidents often occur, the operation rate is low, and it is difficult to meet the demand for stable and high-production production guarantee

[0006] (3) The process flow is not smooth, the belt system accidents are frequent, and the material is blocked and shut down

[0007] (4) The technical and economic indicators are lagging behind, and the advantages of large sintering machines have not been brought into play

[0008] (5) High cost operation

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