Additive agent for large-scale blast furnace stemming and blast furnace stemming

Abstract

The invention relates to a large-scale blast furnace stemming used additive and the blast furnace stemming thereof, and the components of the additive (the weight proportion) is: Si3N4: 2 to 15, kyanite: 2 to 8, organic explosion prevention fiber: 0.2 to 1, solid phenolic resin: 5 to 20, and asphalt: 1 to 15; in the components, the diameter of Si3N4 is less than or equal to 0.074mm, the diameter of the kyanite is more than or equal to 0.125mm and less than or equal to 0.45mm, the asphalt is high temperature powder asphalt or high polymerization asphalt, and the softening point is no less than100 DEG C; the raw materials is mixed in a dry state and stirred evenly to make the additive. The stemming with the additive is the large-scale blast furnace stemming of the invention, and the blast furnace satisfies the requirements of the large-scale blast furnaces in filling effect, sintering, permeability, anti-erosion and adhesion strength.

Description

Additives for Large Blast Furnace Clay and Its Blast Furnace Clay technical field The invention relates to an additive for large-scale blast furnace clay and the blast furnace clay. Background technique Blast furnace taphole clay plays an important role in ironmaking because it needs to be able to open the taphole at any time during blast furnace tapping, so the performance requirements for blast furnace clay are relatively high. 1. First of all, good workability is required, 2. High corrosion resistance, 3. Good filling effect, 4. Good wear resistance, 5. Good sinterability, 6. High adhesion strength, 7. Good air permeability, 8. , Raw materials are non-polluting, 9, easy to open. In order to achieve the above effects, additives are added to the blast furnace clay. The main components of the existing additives are fused corundum, coke powder, SiC, clay, and sericite. As additives for large-scale blast furnace clay, the blast furnace clay is added to the existing After a...

AI Technical Summary

Problems solved by technology

In order to achieve the above effects, additives are added to the blast furnace clay. The main components of the existing additives are fused corundum, coke powder, SiC, clay, and sericite. As additives for large-scale blast furnace clay, the blast furnace clay is added to the existing After additives are used in the blast furnace clay, due to the poor filling effect, sinterability, gas permeability, corrosion resistance and adhesion strength of the blast furnace blast furnace iron hole, it cannot reach the safety, stability, quality and output of a large blast furnace (4000m3) requirements