Wire rod surface phosphated residue treatment method

Abstract

The invention mainly provides a wire rod surface phosphated residue treatment method. According to the method, a cam pump is cooperated with a centrifugal separator to carry out online separation on amixture in a phosphating cylinder, and separated phosphating solution can return to the phosphating cylinder, so that treatment of the phosphated residue is carried out without halt production; in addition, centrifugal separation can ensure full separation of residue and liquid to increase the utilization ratio of the phosphating solution; and moreover, the phosphating solution directly returns to the phosphating cylinder to ensure that the parameter is not changed, and the phosphating effect is not affected.

Description

technical field [0001] The invention relates to the technical field of pickling of wire rods, in particular to a method for treating phosphating slag on the surface of wire rods. Background technique [0002] On the metal material pickling and phosphating unit, the heating temperature of the phosphating solution in the phosphating tank is generally controlled above 75°C, and the phosphating solution used is generally zinc-based or manganese-based phosphating solution, which will decompose after reacting with Fe Production of insoluble iron phosphate and other insoluble salts - called phosphating slag, deposited at the bottom of the tank, if not removed in time, will affect the phosphating effect of metal materials. [0003] At present, some enterprises adopt the method of sedimentation outside the tank, that is, a phosphating solution sedimentation tank is set up outside the tank, and the phosphating solution in the tank is regularly discharged into the sedimentation tank. A...

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Problems solved by technology

[0002] In pickling and phosphating units for metal materials, the heating temperature of the phosphating solution in the phosphating tank is generally controlled above 75°C, and the phosphating solution used is generally zinc-based or manganese-based phosphating solution, which will decompose after reacting with Fe Production of insoluble iron phosphate and other insoluble salts - called phosphating slag, deposited at the bottom of the tank, if not removed in time, it will affect the phosphating effect of metal materials

[0003] At present, some enterprises adopt the method of sedimentation outside the tank, that is, a phosphating solution sedimentation tank is set up outside the tank, and the phosphating solution in the tank is regularly discharged into the sedimentation tank. After a period of precipitation, the clarified phosphating solution is washed again. It can be reused in the phosphating tank, and then the phosphating slag at the bottom is bagged and transported to a special treatment plant. Although this form can realize the treatment of phosphating slag in the phosphating tank, it must be shut down for treatment, and each treatment requires Manually dig out the mixture in the phosphating tank and send it to the sedimentation tank, and then the phosphating slag treated in this way also contains a large amount of phosphating solution, which causes a certain waste and increases the treatment cost of the phosphating slag

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