A kind of mixing process in the production process of waterless taphole clay

Abstract

The invention discloses a stirring process for the water-free taphole clay production process. The stirring process has the advantages that efficiency is high, bonding agents can fully wet aggregates and powder, the uniformity is good, and the stability is high. The stirring process comprises the steps of (1) conducting dry-blending, wherein various kinds of aggregates and powder weighed according to a formula are placed into a mixer for stirring, the stirring speed of a rotor ranges from 72 r / m to 108 r / m, and the stirring time ranges from 60 s to 120 s, (2) adding the bonding agents, wherein the bonding agents weighed according to the formula are placed into the mixer, the adding speed of the bonding agents ranges from 1.2 Kg / s to 2.2 Kg / s, and the stirring speed of the rotor ranges from 72 r / m to 108 r / m, and (3) conducting wet-blending. The stirring process can be widely applied to the water-free taphole clay production field.

Description

technical field [0001] The invention relates to a mixing process in the production process of anhydrous taphole mud, which belongs to the technical field of refractory materials. Background technique [0002] Anhydrous taphole mud is a refractory material used to seal the iron hole in the blast furnace ironmaking process. The quality of its performance directly affects the safe operation of the blast furnace. With the development of blast furnace smelting technology, blast furnace ironmaking has the characteristics of large furnace capacity, high blast temperature, high top pressure, and increased smelting intensity. The quality requirements for blast furnace clay are getting higher and higher, and the production of blast furnace clay New requirements, and the mixing process of gun mud is an important link in the production process of gun mud. [0003] The patent of Publication No. CN1810723A reports that the mixing and grinding process is to add coke powder and brown coru...

AI Technical Summary

Problems solved by technology

This kind of mixed milling process has no tar addition process, and the tar is not easy to disperse evenly and wet the material

In addition, the high-speed wheel mill is rolled at a higher speed in the later stage, the torque of the wheel mill is small, and the work is less, which is not conducive to the formation of good plasticity of the clay. The mixing time is longer, about 40 minutes, and the efficiency is low.

[0005] In the patents of Publication No. CN102924100A and Publication No. CN102617157A, the preparation methods of anhydrous taphole clay do not have a relatively specific and detailed mixing process, and it is difficult to produce anhydrous taphole clay with good uniformity and good plasticity.

[0006] In summary, the existing mixing process has disadvantages such as poor wettability of the binder to the aggregate and powder, poor homogeneity, poor stability and long mixing time, resulting in low production efficiency and unstable quality of the clay. During the process, there were problems such as unstable dredging pressure, fluctuating tapping time, shallow tap hole, and iron penetration, which affected the smooth operation of the blast furnace

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