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A kind of preparation method of iron trench castable containing graphene oxide

A technology of iron trench castables and graphene, which is applied in the field of iron trench castables, can solve the problems of difficult dispersion of graphite, inapplicability to large-scale production, and reduced strength of samples, so as to improve structural strength and corrosion resistance, and reduce structural stress. Peeling and cracking, porosity reduction effect

Active Publication Date: 2017-12-19
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Such as "a method for preparing granulated graphite for refractory castables" (CN102491760A) patent technology, which discloses the replacement of flake graphite with granulated graphite, the amount of water added to the castable is reduced, and the fluidity is improved to a certain extent, but The graphite introduced by this method is not easy to disperse evenly in the matrix, and the efficiency of granulation is very low, so it is not suitable for large-scale production; "A kind of iron trench castable containing modified graphite and its preparation method" (CN104402479A) patent technology, It is disclosed that the addition of Al with modified graphite 2 o 3 -SiC-C castables improve its flexural strength and slag resistance, but its density becomes smaller, and the strength of the sample decreases a lot after drying

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  • A kind of preparation method of iron trench castable containing graphene oxide
  • A kind of preparation method of iron trench castable containing graphene oxide
  • A kind of preparation method of iron trench castable containing graphene oxide

Examples

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Effect test

Embodiment 1

[0034] A kind of preparation method of iron channel castable containing graphene oxide, add by weight percentage by 43% dense corundum, 20% white corundum, 20% silicon carbide, 7% α-Al 2 o 3 Micropowder, 3% silica powder, 3% aluminate cement, 2% spherical asphalt and 2% elemental silica fume are used as raw materials, adding 0.1% water reducer and 0.1% of the total weight of the raw materials The auxiliary material that the anti-explosion fiber of above-mentioned raw material gross weight 0.05% is formed, adds graphene oxide solution and graphene oxide antioxidant (the consumption of graphene oxide in graphene oxide solution is described raw material gross weight 0.05%, the graphene oxide solution The concentration is 3 mg / mL, and the amount of antioxidant for graphene oxide is 20% of the amount of graphene oxide).

[0035] The antioxidant for graphene oxide is magnesium diboride, and the water reducer is sodium tripolyphosphate.

[0036] The mass content of aluminum oxide i...

Embodiment 2

[0044] A preparation method of iron trench castable containing graphene oxide, adding 50% dense corundum, 10% white corundum, 15% silicon carbide, 10% α-Al in weight percentage 2 o 3 Micropowder, 5% silicon dioxide micropowder, 5% aluminate cement, 3% spherical asphalt, 2% elemental silicon powder are used as raw materials, and 0.5% of the water reducer and 0.5% of the total weight of the raw materials are added. The auxiliary material that the above-mentioned raw material gross weight 0.2% explosion-proof fiber constitutes, adds the graphene oxide that accounts for described raw material gross weight 0.01% and the graphene oxide antioxidant of described graphene oxide consumption 10-30%, adds raw raw material gross weight 3 % water.

[0045] The antioxidant for graphene oxide is zirconium diboride, and the water reducer is sodium polyacrylate.

[0046] The above-mentioned graphene oxide was added as a graphene oxide solution with a concentration of 5 mg / mL. The preparation...

Embodiment 3

[0053] A preparation method of iron trench castable containing graphene oxide, adding 30% dense corundum, 30% white corundum, 30% silicon carbide, 3% α-Al in weight percentage 2 o 3 Micropowder, 1% silica micropowder, 4% aluminate cement, 1% spherical asphalt, 1% elemental silicon powder are used as raw materials, and 0.5% of the total weight of the raw materials is added to the water reducer and the raw materials 0.1% of the total weight of explosion-proof fiber constitutes auxiliary materials, adding 0.1% of the total weight of the raw material graphene oxide and 10% of the graphene oxide antioxidant, adding 1% of the total weight of the raw material water.

[0054] The antioxidant for graphene oxide is boron carbide, and the water reducer is sodium hexametaphosphate.

[0055] The above-mentioned graphene oxide was added as a graphene oxide solution with a concentration of 1 mg / mL. The preparation method of the graphene oxide solution refers to Example 1.

[0056] The pre...

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Abstract

The invention provides a method for preparing iron trench castables containing graphene oxide, which includes the following steps: Step 1: premixing, mixing raw materials and auxiliary materials uniformly, the raw materials include dense corundum, white corundum, silicon carbide, α-Al2O3 Micropowder, silica micropowder, aluminate cement, spherical asphalt and elemental silica fume, auxiliary materials include water reducing agent and explosion-proof fiber; Step 2: adding graphene oxide solution and antioxidant for graphene oxide. Applying the technical solution of the present invention has the following effects: (1) the preparation steps are simplified and suitable for industrial production; (2) the addition of graphene oxide can reduce the amount of conventional carbonaceous materials such as spherical pitch, and can reduce toxic carcinogenicity when used in a high temperature environment The generation of flue gas; (3) The addition of graphene oxide can effectively increase the carbon content in the castable, reduce the amount of water added and reduce the porosity of the iron trench castable, improve the structural strength and thermal shock resistance of the iron trench castable performance and corrosion resistance.

Description

technical field [0001] The invention relates to the field of iron trench castables, in particular to a method for preparing iron trench castables containing graphene oxide. Background technique [0002] The blast furnace iron trough is a channel for guiding high-temperature molten iron and slag, and its refractory lining is subjected to high temperature, mechanical and chemical erosion of molten iron and slag. With the development of large-scale blast furnace smelting technology, the temperature of molten iron is higher, the amount of iron passing is increased, the time of iron passing is prolonged, the interval between tapping iron is shortened, and the oxidation of slag and iron is enhanced, which makes the high temperature molten iron and slag scouring and wearing the refractory Increase, which puts forward more stringent requirements on the erosion resistance, thermal shock resistance, burst resistance and erosion resistance of refractory materials. [0003] At present,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66
Inventor 程本军何可张少伟古丽寨娜林良绪刘诚
Owner CENT SOUTH UNIV
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