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Tap hole medium-temperature-sintering environment-friendly stemming for large- and medium-sized blast furnaces and preparation method of tap hole medium-temperature-sintering environment-friendly stemming

A tap hole, large and medium-sized technology, which is applied to the medium-temperature sintering environment-friendly taphole clay for large and medium-sized blast furnaces and its preparation field, can solve the problem of poor rapid sintering performance, low strength and thermal conductivity, and resistance to slag iron erosion and scouring. Poor performance and other problems, to achieve the effect of improving microporation index, improving medium and high temperature sintering performance, resistance to slag iron erosion and scouring ability

Inactive Publication Date: 2016-07-13
HEBI RONGMING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The invention provides a medium-temperature sintering environment-friendly taphole clay for large and medium-sized blast furnaces and a preparation method thereof, which solves the problems of poor rapid sintering performance, low strength and thermal conductivity, and poor slag iron erosion and erosion resistance of the taphole

Method used

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  • Tap hole medium-temperature-sintering environment-friendly stemming for large- and medium-sized blast furnaces and preparation method of tap hole medium-temperature-sintering environment-friendly stemming

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Embodiment 1

[0031] A medium-temperature sintering environment-friendly taphole clay for large and medium-sized blast furnaces, comprising, in parts by weight: binder, anti-explosion fibers and the following dry material components in parts by weight:

[0032] Sprinkle dry material to carry out batching according to following requirements, and its component is counted as by weight:

[0033] 12 parts of brown corundum: of which 0.051mm < particle size ≤ 1mm accounted for 75%, particle size ≤ 0.051mm accounted for 25%;

[0034] 45 parts of high-alumina clinker, of which the weight percentage of high-alumina clinker with 1mm<particle size≤3mm in the whole high-alumina clinker is 60%; the high-alumina clinker with particle size≤0.074mm in the whole The weight percentage is 40%;

[0035] Silicon carbide: 12 parts, silicon carbide particle size ≤ 0.08mm;

[0036] 1.5 parts of ferrosilicon nitride, in the ferrosilicon carbide, Si 3 N 4 Accounted for 75%, Fe accounted for 16%, and the balance ...

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Abstract

The invention relates to tap hole medium-temperature-sintering environment-friendly stemming for large- and medium-sized blast furnaces and a preparation method of the tap hole medium-temperature-sintering environment-friendly stemming.The spreading drying material of the stemming is reasonable in composition and combination and is characterized in that the spreading drying material uses high-aluminum clinker and coke powder as aggregate and brown aluminum oxide, clay and silicon carbide as powder, ferro-silicon nitride content is adjusted, micro-powder such as silicon powder and alpha-aluminum oxide and anti-burst fibers are added, and the binder is the mixture of 9-11 parts of tar, 2-5 parts of resin and 1-3 parts of anthracene oil.The tap hole medium-temperature-sintering environment-friendly stemming has the advantages that the anti-burst fibers are added, so that the heat conduction ability of the stemming is increased, combustion carbonization of the tap hole stemming can be achieved during high-temperature exhausting, and the opening performance of the stemming is improved; the small amount of fire-resistant materials such as the brown aluminum oxide, the silicon carbide and the ferro-silicon nitride with excellent slag iron corrosion resistance are combined with the anti-burst fibers which can exhaust and combust fast and the high-aluminum clinker which is low in cost, the molten iron and slag corrosion resistance of the stemming is increased greatly, and the tapping time of the stemming is guaranteed, and environment pollution is reduced.

Description

technical field [0001] The invention relates to the technical field of refractory materials for iron and steel metallurgy, in particular to a medium-temperature sintering environment-friendly taphole mud for large and medium-sized blast furnaces and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of the iron and steel industry, the development process of large-scale blast furnaces has also been accelerated. The technical advantages of large-scale blast furnaces are mainly reflected in high efficiency and intensive, energy saving and emission reduction, low consumption and environmental protection, and information control. At the same time, the large-scale blast furnace also strongly promotes the development of refractory technology. Due to its high output and large amount of iron in a single pass, large-scale blast furnaces have high requirements on the quality of the blast furnace clay. It requires that the blast furna...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
CPCC04B35/66
Inventor 魏彦博田新飞杨军书魏秀红魏江林田建军程疆超田龙飞刘向东陈江卫
Owner HEBI RONGMING TECH CO LTD
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