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Environmental-protection stemming for blast furnace and preparation method thereof

An environmentally friendly and blast mud technology, applied in the field of refractory materials, can solve the problems of high emissions of harmful substances such as benzopyrene, pollution, etc., and achieve the effects of improving corrosion resistance and durability, good bonding, and high temperature strength

Active Publication Date: 2016-03-30
SHANGHAI BAOSTEEL IND TECHNOLOGICAL SERVICE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a kind of environmentally friendly blast furnace clay and its preparation method, which can overcome the defects of high emission of harmful substances such as benzopyrene and serious pollution during the use of the existing blast furnace clay, and effectively reduce the Benzopyrene emissions, no toxic black and yellow smoke, high temperature strength of gun mud, good bonding, significantly improve the corrosion resistance and durability of materials after sintering

Method used

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  • Environmental-protection stemming for blast furnace and preparation method thereof

Examples

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Effect test

Embodiment 1

[0021] With 26 parts of brown corundum, 18 parts of coke, 14 parts of clay, 11 parts of quartz sand, 7 parts of high-temperature pitch, 24 parts of monocrystalline silicon or polycrystalline silicon cutting waste as the refractory matrix; 17 parts of ferrocene containing 0.5wt% The tar is mixed evenly at 85°C. Add 100 parts by weight of the prepared refractory matrix to 17 parts by weight of a ferrocene-containing binder, mix and evenly roll, and then squeeze out mud strips through a mud extruder and pack them for use.

Embodiment 2

[0023] With 26 parts of brown corundum, 18 parts of coke, 14 parts of clay, 11 parts of quartz sand, 7 parts of high-temperature pitch, 24 parts of monocrystalline silicon or polycrystalline silicon cutting waste as the refractory matrix; 19 parts of tar containing 2wt% ferrocene Mix well at 85°C. Add 100 parts by weight of the prepared refractory matrix to 19 parts by weight of a ferrocene-containing binder, mix and evenly roll, and then squeeze out mud sticks through a mud extruder and pack them for use.

Embodiment 3

[0025] With 26 parts of brown corundum, 18 parts of coke, 14 parts of clay, 11 parts of quartz sand, 7 parts of high-temperature pitch, 24 parts of monocrystalline silicon or polycrystalline silicon cutting waste as the refractory matrix; 17 parts of tar containing 3wt% ferrocene Mix well with 2 parts of anthracene oil at 85°C. Add 100 parts by weight of the prepared refractory matrix to 19 parts by weight of a ferrocene-containing binder, mix and evenly roll, and then squeeze out mud sticks through a mud extruder and pack them for use.

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Abstract

The invention discloses an environmental-protection stemming for a blast furnace and a preparation method thereof, wherein the environmental-protection stemming includes the following components in parts by weight: 20-30 parts of brown aluminum oxide, 12-25 parts of coke, 10-20 parts of clay, 7-15 parts of quartz sand, 4-10 parts of high-temperature asphalt, 15-30 parts of monocrystalline-silicon or polycrystalline-silicon cutting waste, and additionally 13-20 parts of a binding agent containing ferrocene. The preparation method comprises the steps: takes the environmental-protection stemming as a raw material, adding into a stirrer, heating and mixing, rolling and compacting evenly, and after mixing, carrying out extrusion molding with a mud extruding machine. The defects that a conventional stemming has high emission load of benzoapyrene and other harmful substances in the use process and the pollution is serious are overcome; in the use process, the benzopyrene emission is effectively reduced, toxic black and yellow smog is not produced, and the stemming has high high-temperature strength and has good associative property, and the anti-erosion property and durability of the material are significantly improved after the stemming is sintered.

Description

technical field [0001] The invention relates to a refractory material used for blast furnace iron hole maintenance, in particular to an environment-friendly blast furnace clay and a preparation method thereof. Background technique [0002] The role of blast furnace mud is to quickly and accurately block the blast furnace taphole after iron is placed, so that the blast furnace can quickly enter the next cycle of operation; at present, the binder of blast furnace mud is mainly tar, anthracene oil or phenolic resin, which contains harmful benzene , benzopyrene and other carcinogens, the total amount of coal tar and coal tar pitch in gun mud accounts for about 20%, and this binder contains a large amount of strong carcinogens—benzopyrene (Benzo(a)pyreneC 20 h 12 , abbreviated as BaP), the content of benzopyrene is 13000ppm (1.3%), and the yellow smoke volatilizes with the heating process, seriously affecting the health of operators. Benzopyrene has a melting point of 179°C and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 阮国智邱文冬赵玉喜欧阳军华崔秀君齐晓青赵伟
Owner SHANGHAI BAOSTEEL IND TECHNOLOGICAL SERVICE