Smashing and hitting material for blast furnace iron outlet groove

A blast furnace tapping and ramming material technology, which is applied in the field of iron trough ramming material, can solve the problems of high cost, high iron volume, complicated prefabrication process, etc., and achieve the effect of low cost

Inactive Publication Date: 2010-04-14
PANZHIHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its advantages are: no need for on-site baking, easy operation, quick replacement, convenient maintenance, high iron capacity; disadvantages: relatively high cost, complicated prefabrication process

Method used

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  • Smashing and hitting material for blast furnace iron outlet groove
  • Smashing and hitting material for blast furnace iron outlet groove
  • Smashing and hitting material for blast furnace iron outlet groove

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 1. The types and proportions of raw materials are shown in Table 2:

[0036] Table 2

[0037]

[0038] 2. Preparation of ramming material

[0039] 1. Weigh various raw materials according to the ratio in Table 2.

[0040] 2. Put the weighed raw materials into the mud mill and grind them in turn. The order of feeding the raw materials is: super bauxite with a particle size of 5-8mm, super bauxite with a particle size of 3-5mm, super bauxite with a particle size of 0-3mm, blue The spar and flake graphite are first mixed and milled for 5 minutes, then 1 / 3 of the liquid phenolic resin is added and then milled for 5 minutes, and then Guangxi white mud, silicon carbide, brown corundum, metal silicon and special-grade alumina with a particle size of <0.088mm and the remaining The liquid phenolic resin was ground for 8 minutes and discharged.

[0041] 3. Pack in woven bags lined with plastic film, each bag is 25kg, and the seal should be tight. The warranty period is one...

Embodiment 2

[0047] 1. The types and proportions of raw materials are shown in Table 3:

[0048] table 3

[0049]

[0050] 2. Preparation

[0051] 2. Preparation of ramming material

[0052] 1. Weigh various raw materials according to the ratio in Table 3.

[0053] 2. Put the weighed raw materials into the mud mill and grind them in turn. The order of feeding the raw materials is: super bauxite with a particle size of 5-8mm, super bauxite with a particle size of 3-5mm, super bauxite with a particle size of 0-3mm, blue The spar and flake graphite are first mixed and milled for 5 minutes, then 1 / 3 of the liquid phenolic resin is added and then milled for 5 minutes, and then Guangxi white mud, silicon carbide, brown corundum, metal silicon and special-grade alumina with a particle size of <0.088mm and the remaining The liquid phenolic resin was ground for 8 minutes and discharged.

[0054] 3. Pack in woven bags lined with plastic film, each bag is 25kg, and the seal should be tight. T...

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Abstract

The invention belongs to the technical field of iron groove smashing and hitting materials, in particular to a smashing and hitting material for a blast furnace iron outlet groove. The smashing and hitting material for the blast furnace iron outlet groove is prepared by the following materials according to part by weight: alumina 50-78 shares, plasticity agent 3-7 shares, swelling agent 3-6 shares, carborundum 8-12 shares, brown fused alumina 4-12 shares, graphite 4-8 shares, metallic silicon 2-4 shares and phenol resin 6-10 shares. The smashing and hitting material for the blast furnace iron outlet groove is tried through a blast furnace iron outlet groove, the primary iron passing amount is more than 160 thousand tons, and the using effect is better than the precast members or casting materials in the prior art.

Description

technical field [0001] The invention belongs to the technical field of iron trough ramming material, in particular to a ramming material for a blast furnace iron trough. Background technique [0002] With the development of large-scale and high-efficiency blast furnaces, the tapping time of blast furnaces is prolonged, the flow rate of slag and iron is increased, and the operating conditions of blast furnace tapping troughs are more severe, which accelerates the erosion of the lining of iron troughs. The life span of the tap chute is directly related to the normal production rate of the blast furnace. [0003] Medium-sized and large-scale blast furnaces generally have 2 to 4 tapholes, using iron-storage or semi-storage main channels, and the working lining material is mostly Al 2 o 3 - SiC-C castables. Multiple tapholes and tapping troughs can ensure the continuous tapping of blast furnaces and ensure enough time for construction, maintenance and baking of spare iron trou...

Claims

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Application Information

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IPC IPC(8): C04B35/66C21B7/14
Inventor 李亮姚牧
Owner PANZHIHUA UNIV
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