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Mortar for building blast furnace stack graphite brick

A technology for graphite bricks and blast furnace furnaces, which is applied in the field of mortar for masonry graphite bricks of blast furnace shafts and graphite bricks for masonry linings of blast furnace shafts, can solve problems such as unfavorable rapid construction, poor thermal conductivity, and lack of strength, and achieves Improve the effect of easy oxidation, enhanced adhesion and high temperature resistance, and high thermal conductivity

Active Publication Date: 2010-05-12
BAOSHAN IRON & STEEL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing graphite-like cement has poor thermal conductivity, only 5-8W / m K, and it does not solidify at room temperature, has no strength, and is not conducive to rapid construction, which fundamentally limits the use of high thermal conductivity graphite bricks as furnace linings. Application in blast furnace

Method used

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  • Mortar for building blast furnace stack graphite brick
  • Mortar for building blast furnace stack graphite brick
  • Mortar for building blast furnace stack graphite brick

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] In this embodiment, by weight, the proportions of the components of the cement are respectively:

[0019] Graphite is 48%, antioxidant metal silicon is 3%, resin binder is 47%, acid curing agent is 2%.

[0020] The thermal conductivity of the graphite cement mixed according to this ratio reaches 16.18W / m K. All other parameters have been tested, and the results are shown in Table 1 below.

[0021] Table 1

[0022]

Embodiment 2

[0024] In this embodiment, by weight, the proportions of the cement are respectively:

[0025] 52% graphite, 3% antioxidant metal silicon, 42% resin binder, and 3% acid curing agent.

[0026] The thermal conductivity of the graphite cement mixed according to such a ratio reaches 17.32W / m K. The rest of the parameters have been tested and the results are shown in Table 2 below.

[0027] Table 2

[0028]

Embodiment 3

[0030] In this embodiment, by weight, the proportions of the components of the cement are respectively:

[0031] Graphite is 43%, antioxidant metal silicon is 3%, resin binder is 50%, acid curing agent is 4%.

[0032] The thermal conductivity of the graphite cement mixed according to this ratio reaches 13.67w / m·k. The rest of the parameters have been tested and the results are shown in Table 3 below.

[0033] table 3

[0034]

[0035] The graphite glue made according to the above-mentioned embodiments of the present invention is applicable to the bonding between the graphite bricks of the furnace body of the blast furnace. The cement can be solidified at normal temperature (20° C.) and produce strength, which is beneficial to construction due to its high thermal conductivity. 110 The characteristics of high thermal strength in the temperature range of -800°C enable this graphite cement to continuously maintain the overall strength and overall high thermal conductivity of t...

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Abstract

This invention discloses a daub for building graphite bricks of furnace stacks, in which, the daub includes graphite, antioxidation agent, a binder, a solidifying agent to be mixed in proportion, thegraphite is 40-60%, antioxidation agent 1-5%, the binder 30-50% and solidifying agent 1-5%, since graphite has high heat conduction performance and wet angle with melt metal with melt metal is big under high temperature, the daub is good at heat conduction and fine in anti-corrosion and binds graphite bricks under different temperatures.

Description

technical field [0001] The invention relates to an unshaped refractory material, and more specifically refers to a cement used for building graphite bricks of a blast furnace body. The cement is mainly used for building graphite bricks for the inner lining of a blast furnace body. Background technique [0002] The blast furnace is an indispensable large-scale smelting equipment in the metallurgical industry. At present, the lining refractories of the blast furnace body traditionally used for ironmaking are mostly made of aluminum silicate and carbonized silicon bricks. People in the industry know that although aluminum silicate and carbonized silicon bricks are The strength is higher, but the thermal conductivity of the two is poor. The thermal conductivity of silicon carbide bricks is 13-15W / m K, and the thermal conductivity of aluminum silicate bricks is lower, about 2W / m K. The lining brick is used as the working surface of the blast furnace. Due to its low thermal conduc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66C04B35/536C04B35/63
Inventor 甘菲芳唐坤姜华邰力丁岩峰林金嘉
Owner BAOSHAN IRON & STEEL CO LTD
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