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High performance anhydrous stemming containing graphene and preparation method of high-performance anhydrous stemming

A technology of anhydrous taphole clay and graphene, which is applied in the field of blast furnace taphole clay, can solve the problems of inconspicuous increase in high-temperature strength, strengthening, etc., achieve the effects of reducing toxic and carcinogenic fumes, simplifying the preparation process steps, and improving performance

Inactive Publication Date: 2018-04-03
湖南永盛高新耐火材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, the patented technology of "Blast Furnace Taphole Anhydrous Taphole Clay" (CN1840507) discloses that carbon black is used as a carbonaceous material to be introduced into the taphole clay, and the shaping of the taphole clay is improved to a certain extent, and it is easy to squeeze into the taphole from the clay pot. , and its erosion resistance and slag iron erosion resistance are greatly enhanced, but the high temperature strength is not significantly improved; "A kind of blast furnace anhydrous taphole clay and its production equipment" (CN105237000A) patent technology discloses that graphite is added to taphole clay , improve the openness and erosion resistance of anhydrous taphole, but the high temperature strength is also not significantly improved

Method used

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  • High performance anhydrous stemming containing graphene and preparation method of high-performance anhydrous stemming
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  • High performance anhydrous stemming containing graphene and preparation method of high-performance anhydrous stemming

Examples

Experimental program
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Effect test

Embodiment 1

[0033] A high-performance anhydrous taphole clay containing graphene and its preparation method, adding 15% of super-grade alumina, 19.9% ​​of coke, 25% of silicon carbide, 15% of asphalt, and 20% of combined Clay, 5% sericite and 0.1% Graphene form the raw material, adding an additional material that accounts for 2% of the metal silicon of the raw material gross weight and 12% of the Graphene gross weight of the Graphene. 13% of binder was added based on the total weight of the raw materials.

[0034] The antioxidant for graphene is magnesium diboride, and the binding agent is tar.

[0035] The mass content of aluminum oxide in the super-grade bauxite is greater than or equal to 85%, and its particle size is less than or equal to 3mm; the mass content of carbon in the coke is greater than or equal to 80%, and its particle size is less than or equal to 3mm; the silicon carbide The mass content of silicon carbide is greater than or equal to 97%, and its particle size is less t...

Embodiment 2

[0042] A high-performance anhydrous gunpowder containing graphene and its preparation method, adding 50% of super-grade alumina, 10% of coke, 15% of silicon carbide, 9.99% of asphalt, and 10% of combined Clay, 5% sericite and 0.01% Graphene form the raw material, adding an additional material that accounts for 1% of the total weight of the raw material and 10% of the Graphene with an antioxidant that accounts for the total weight of the graphene. Add 20% of binder based on the total weight of the raw materials.

[0043] The antioxidant for graphene is zirconium diboride, and the binding agent is anthracene oil.

[0044] The preparation method specifically comprises the following steps:

[0045] Step 1: Prepare materials, specifically: weigh the raw materials and external materials according to their mass, and place them separately for use;

[0046] Step 2: Mixing materials, specifically: first add super-grade bauxite, coke, silicon carbide, and asphalt into a mixer with heat...

Embodiment 3

[0050] A high-performance anhydrous gunpowder containing graphene and its preparation method, adding 36.5% of super-grade alumina, 15% of coke, 20% of silicon carbide, 10% of asphalt, and 15% of combined Clay, 3% sericite and 0.5% Graphene form the raw material, adding an additional material that accounts for 1.4% of the metal silicon of the raw material gross weight and 16% of the Graphene by the graphene gross weight. 16% of binder was added based on the total weight of the raw materials.

[0051] The antioxidant for graphene is boron carbide, and the binding agent is tar.

[0052] The preparation method specifically includes the same steps as in Example 2.

[0053] The anhydrous taphole mud of this embodiment is marked as PN3, and its physical and chemical indicators are shown in Table 4.

[0054] The following Examples 4-6 use the same preparation method as Example 1 to Example 3, and the specific composition of each component is shown in Table 1.

[0055] Table 1 embod...

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Abstract

The invention provides high-performance anhydrous stemming containing graphene and a preparation method of the high-performance anhydrous stemming. The preparation method comprises: step 1, preparingmaterials, which includes weighing required raw materials including super-grade bauxite, coke, silicon carbide, asphalt, combined clay, sericite and graphene, and additives including metallic siliconand an anti-oxidant used for graphene; step 2, fully mixing the weighed materials with a binder; and step 3, making the uniformly mixed material into final products via an extruder and bagging the final products for storage. According to the technical scheme, the anhydrous stemming has the following effect: (1) the preparation method is simplified in steps and suitable for industrial production; (2) graphene is added to reduce the consumption of conventional carbonaceous materials including coke and asphalt and can reduce production of toxic carcinogenic flue gas during high-temperature usage;and (3) graphene is extremely high in structural strength and is added to resist washing, thermal shock and corrosion.

Description

technical field [0001] The invention relates to the technical field of blast furnace taphole clay, in particular to a graphene-containing high-performance anhydrous clay and a preparation method thereof. Background technique [0002] Blast furnace clay is a refractory material used to block the blast furnace taphole during the intermittent period of tapping to prevent molten iron and slag from flowing out. It also has the function of protecting the furnace wall and furnace bottom in the taphole area. It is mainly composed of refractory aggregate prepared with binders. Blast furnace clay is divided into two types: foamed clay and anhydrous clay. Blistered mud is mainly made of bauxite clinker, coke powder, clay and tar pitch as the main raw materials, and water is used as the binder to stir, but its strength is small, the high temperature thermal conductivity is low, the resistance to chemical erosion is not enough, and it is easy to The phenomenon of tidal tapholes appears...

Claims

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Application Information

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IPC IPC(8): C04B35/66C04B26/26C04B14/02
CPCC04B14/024C04B26/26C04B35/66C04B2201/50C04B2201/20C04B14/303C04B14/022C04B14/324C04B14/10C04B14/20C04B22/02C04B14/321C04B14/323
Inventor 程本军曾友迪何可曾赟曾艳
Owner 湖南永盛高新耐火材料有限公司
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