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Ramming material for iron tap channel and preparation method of ramming material

A technology of ramming materials and tapping channels, which is applied in the field of refractory materials, can solve the problems of not meeting the production needs of blast furnaces, shortening the service life of iron channel materials, and repeating the number of repeated channel repairs, etc., to achieve perfect product structure, slag resistance and erosion resistance Excellent performance and lower production cost

Inactive Publication Date: 2018-12-07
JIANGSU JIANGNENG NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current domestic trench material grade is low, and the workload of slag cleaning in front of the furnace is large. At the same time, improper slag cleaning operation shortens the life of the iron trench material, resulting in low iron flow, repeated trench repairs, and labor intensity. , so it cannot meet the production demand of the blast furnace

Method used

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  • Ramming material for iron tap channel and preparation method of ramming material
  • Ramming material for iron tap channel and preparation method of ramming material
  • Ramming material for iron tap channel and preparation method of ramming material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A kind of ramming material for tapping trench, including raw materials in the following proportions: high-quality bauxite 54%, of which (high-quality bauxite 0.1-1mm18%, high-quality bauxite 1-3mm16%, high-quality bauxite 3 -5mm20%), brown corundum 13%, silicon carbide 12%, Guangxi mud 3%, kyanite 3%, alumina superfine powder 7%, spodumene powder 1%, antioxidant 1%, plasticizer 0.7% , environmental protection resin 5%, sintering agent 0.3%.

[0038] A kind of preparation method for the ramming material of tapping trough, comprises the following steps:

[0039] (1) Prepare the main ingredients according to the above ratio, high-quality bauxite, brown corundum, and silicon carbide, weigh them and add them to the mixer for 5-10 minutes;

[0040] (2) Add the above-mentioned auxiliary materials according to the above ratio, spodumene powder, Guangxi mud, kyanite, alumina superfine powder, anti-oxidant and stir evenly;

[0041] (3) Add plasticizer, environmental protection ...

Embodiment 2

[0045] A kind of ramming material used for tapping troughs, including raw materials in the following proportions: high-quality bauxite 48%, of which (high-quality bauxite 0.1-1mm15%, high-quality bauxite 1-3mm16%, high-quality bauxite 3 -5mm17%), brown corundum 18%, silicon carbide 11%, Guangxi mud 3%, kyanite 4%, alumina superfine powder 6%, spodumene powder 1%, antioxidant 2%, plasticizer 0.6% , environmental protection resin 6%, sintering agent 0.4%.

[0046] A kind of preparation method for the ramming material of tapping trough, comprises the following steps:

[0047] (1) Prepare the main ingredients according to the above ratio, high-quality bauxite, brown corundum, and silicon carbide, weigh them and add them to the mixer for 5-10 minutes;

[0048] (2) Add the above-mentioned auxiliary materials according to the above ratio, spodumene powder, Guangxi mud, kyanite, alumina superfine powder, anti-oxidant and stir evenly;

[0049] (3) Add plasticizer, environmental prote...

Embodiment 3

[0053] A kind of ramming material used for tapping troughs, including raw materials in the following proportions: high-quality bauxite 43% of which (high-quality bauxite 0.1-1mm16%, high-quality bauxite 1-3mm15%, high-quality bauxite 3- 5mm12%), brown corundum 22%, silicon carbide 11%, Guangxi mud 4%, kyanite 3%, alumina superfine powder 5%, spodumene powder 1%, antioxidant 3%, plasticizer 0.5%, Environmentally friendly resin 7%, sintering agent 0.5%.

[0054] A kind of preparation method for the ramming material of tapping trough, comprises the following steps:

[0055] (1) Prepare the main ingredients according to the above ratio, high-quality bauxite, brown corundum, and silicon carbide, weigh them and add them to the mixer for 5-10 minutes;

[0056] (2) Add the above-mentioned auxiliary materials according to the above ratio, spodumene powder, Guangxi mud, kyanite, alumina superfine powder, anti-oxidant and stir evenly;

[0057] (3) Add plasticizer, environmental protect...

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Abstract

The invention belongs to the field of refractory matters and relates to a ramming material for an iron tap channel and a preparation method of the ramming material. The ramming material is particularly suitable for main iron tap channels, branched iron tap channels and slag channels in front of an iron-making blast furnace. The ramming material contains the following raw materials: high-quality bauxite, brown fused alumina, silicon carbide, spodumene powder, Guangxi mud, kyanite, alumina ultrafine powder, an antioxidant, a plasticizer, environment-friendly resin and a sintering agent. The ramming material and the preparation method are characterized in that iron can be directly tapped without being baked after the construction, so that the use efficiency of the iron tap channel of the blast furnace is improved, the stable and smooth production during the iron-making is guaranteed, and the labor intensity of workers is alleviated. According to the performance, the ramming material for the iron tap channel is good in bonding strength, strong in fusion oxidation resistance, slag resistance and washing resistance, meanwhile, the refractory consumption is reduced, and the service life of a channel liner is prolonged.

Description

technical field [0001] The invention belongs to the field of refractory materials, and relates to a ramming material for tapping troughs and a preparation method thereof, and is especially suitable for main tapping troughs, branch iron troughs and slag troughs in front of ironmaking blast furnaces. Background technique [0002] At present, most of the ironmaking blast furnaces in my country have single taphole and double tapholes. Blast furnace ironmaking needs to be in continuous operation for 24 hours, and the iron trough is the channel through which high-temperature molten iron or slag flows out repeatedly from the blast furnace. It is mainly composed of main iron ditch, branch iron ditch, slag ditch and skimmer, etc. The durability of refractory materials directly affects the normal production of blast furnace ironmaking, so this material is one of the most important links in ironmaking production. However, the current domestic trench material grade is low, and the worklo...

Claims

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Application Information

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IPC IPC(8): C04B35/103
CPCC04B35/103C04B2235/3463C04B2235/3472C04B2235/3826C04B2235/96C04B2235/9615
Inventor 周强
Owner JIANGSU JIANGNENG NEW MATERIAL TECH
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