The substitution process of rheology modifying agent for pumping iron ore slurry in pipeline

摘要

d substitution process of rheology modifying agent for pumping iron ore slurry pipeline b for the present invention relates to a change in rheology modifying agent of ores in the area of knowledge of mining engineering, the field of treatment D And minerals.This is a change of the reagent that is used worldwide to control the rheology of the iron ore slurry in pipeline of long distance, followed by a pH correction to control the internal corrosion of the pipe, called process Machado Silva Santos, or process MS, in reference to the names of their inventors.This process is applicable to various types of iron ore found in the world, even those associated with minerals that generate a large hydrated ma - teriais ultra-thin, in the process of comminution.Basically consists in the process of concen - traction of iron ore, independent of the route of the process adopted and adapted to fit the final regrind particle size for long-distance transport.Here, then, is to the process to increase the percentage of solids, thickening and / or ciclonagem, ending with the pumping of the iron ore slurry in pipeline, according to the profile of the ground and hydraulic conditions. The addition of reagents can be used in tanks, before the start of the pump, but it is recommended to perform on the stage to increase the percentage of solids.The end result is a iron ore slurry with pH 10.5 and minimum dosa - gem of rheology modifying in the quantity necessary to promote the control of rheological variables during pumping.