Mixing method of sliding bricks in steelmaking slide gate system

Abstract

The invention belongs to the technical field of refractory material production, and more specifically relates to a mixing method of sliding bricks in a steelmaking slide gate system. The mixing method comprises following steps: firstly, particles and all powder materials are delivered into a mixing equipment, and are stirred for 3 to 5min in the mixing equipment; a binding agent is added for 15 to 30min of stirring, and then discharging is carried out; wherein poly hydroxy acrylic acid is added into the powder materials. The mixing method is capable of increasing mixing efficiency greatly; equipment loss and energy consumption are both reduced by more than one third; adding amount of the binding agent is reduced; more uniform dispersing is realized; agglomeration is avoided; slurry performance is improved; more firm combination of the particles with the powder materials is realized; the effects of formula design are achieved preferably; and production performance is improved.

Description

technical field [0001] The invention belongs to the technical field of refractory production, and in particular relates to a mixing method for sliding bricks in a sliding nozzle system for steelmaking. Background technique [0002] As a functional refractory material for steelmaking, the use conditions of sliding bricks are harsh, and its manufacturing process is complicated and strict. The mixing process is particularly important in the production and manufacturing process of sliding bricks. The traditional skateboard brick technology has been used by domestic counterparts for more than 30 years, and there has been no breakthrough in the feeding sequence and mixing method. [0003] The traditional kneading process is as follows: (1) Stir the particles for 2 to 3 minutes; (2) Add resin and stir for 8 to 10 minutes; (3) Add flake graphite and stir for 5 to 10 minutes; (4) Add powder and stir for 15 to 40 minutes Minutes; (5) discharge. [0004] When the resin is added, the ...

AI Technical Summary

Problems solved by technology

However, if you need to achieve a better effect, it takes a long time for rolling, time-consuming and labor-intensive, equipment loss and energy consumption; the mixing efficiency is low, which greatly prolongs the production cycle; at the same time, the raw materials required for sliding brick mixing are 60 ~70% are granules, the size and diameter of the granules are different, and the shape of the granules is irregular. These uncontrollable and variable factors that are difficult to effectively control will lead to uneven dispersion of the resin and prone to mud defects once the kneading temperature is not well controlled; It has caused phenomena such as brick spallation, drumming, lack of compactness, and particle segregation during the forming process, and poor board surface is prone to occur during use.

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