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A calcium carbide furnace electrode sealing device

A technology for sealing devices and calcium carbide furnaces, which is applied in the direction of electric heating devices, electric furnace heating, furnaces, etc., can solve the problems of electrode column friction damage and short service life, and achieve extended service life, high resistance to CO erosion, and excellent thermal shock resistance performance effect

Active Publication Date: 2018-12-21
宜兴瑞泰耐火材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the upper layer 1 and the lower layer 2 are high-temperature fiber cloths, which form a circle (composed of several petals) around the graphite electrode, but in actual use, the friction between it and the electrode column is seriously damaged, and the service life is short; especially the lower layer 2. It is in contact with the heat flow in the calcium carbide furnace through the furnace cover, the maximum temperature can reach 1100 ° C, and it is in a high-concentration CO environment, so the service life is shorter

Method used

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  • A calcium carbide furnace electrode sealing device
  • A calcium carbide furnace electrode sealing device
  • A calcium carbide furnace electrode sealing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The corundum prefabricated part is composed of the following components in mass percentage:

[0043] aggregate:

[0044]

[0045]

[0046] Powder:

[0047]

[0048] The sum of the above aggregate and powder is 100%;

[0049] Add 0.1% of the total mass of the above components of sulfamic acid-based high-performance water reducer and 4% of water, and 0.5% of the total mass of nano-powder in the above components. The dispersant is an anionic surfactant twelve A mixture of sodium alkylbenzene sulfonate and gum arabic in a mass ratio of 1:2.

[0050] The preparation method is as follows:

[0051] Step 1: Pour the dispersant and water reducer into water, stir and mix, and make a mixed solution for later use;

[0052] Step 2: Mix the aggregate and powder evenly, add the mixture in Step 1, and stir again;

[0053] Step 3: Pour the slurry mixed in Step 2 into the mold, and form it after vibration;

[0054] Step 4: demoulding after natural hardening, and curing for 3...

Embodiment 2

[0057] The corundum prefabricated part is composed of the following components in mass percentage:

[0058] aggregate:

[0059]

[0060]

[0061] Powder:

[0062]

[0063] The sum of the above aggregate and powder is 100%;

[0064] Add 0.2% of the total mass of the above components of sulfamic acid-based high-performance water reducer and 5% of water, and a dispersant of 1% of the total mass of nano-powder in the above components. The dispersant is an anionic surfactant twelve A mixture of sodium alkylbenzene sulfonate and gum arabic in a mass ratio of 1:2.

[0065] The preparation method is as follows:

[0066] Step 1: Pour the dispersant and water reducer into water, stir and mix, and make a mixed solution for later use;

[0067] Step 2: Mix the aggregate and powder evenly, add the mixture in Step 1, and stir again;

[0068] Step 3: Pour the slurry mixed in Step 2 into the mold, and form it after vibration;

[0069] Step 4: demoulding after natural hardening, ...

Embodiment 3

[0072] The corundum prefabricated part is composed of the following components in mass percentage:

[0073] aggregate:

[0074]

[0075]

[0076] Powder:

[0077]

[0078] The sum of the above aggregate and powder is 100%;

[0079] Add 0.2% of the total mass of the above components of sulfamic acid-based high-performance water reducer and 7% of water, and a dispersant of 2% of the total mass of nano-powder in the above components. The dispersant is an anionic surfactant twelve A mixture of sodium alkylbenzene sulfonate and gum arabic in a mass ratio of 1:2.

[0080] The preparation method is as follows:

[0081] Step 1: Pour the dispersant and water reducer into water, stir and mix, and make a mixed solution for later use;

[0082] Step 2: Mix the aggregate and powder evenly, add the mixture in Step 1, and stir again;

[0083] Step 3: Pour the slurry mixed in Step 2 into the mold, and form it after vibration;

[0084] Step 4: demoulding after natural hardening, ...

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Abstract

The invention discloses an electrode sealing device of a calcium carbide furnace, which comprises two layers of sealing refractory material arranged on a furnace cover and surrounding the electrode pillar, wherein the lower layer of sealing refractory material is more than two pieces of corundum preform, and the upper layer of sealing refractory material is a high-temperature fiber cloth plate. Alayer of chain armor coats the high-temperature fiber cloth plate, A chain armor is in contact with that electrode post, The graphite electrode is effectively prevented from directly frictionally contacting with the high-temperature fiber cloth, so that the service life is obviously prolonged, A lower layer adopt a corundum preform instead of a high-temperature fiber cloth, The wear resistance andthe high temperature resistance are obviously improved, the service life is further obviously prolonged, the corundum preform of the invention has high wear resistance, high strength, excellent thermal shock resistance, and low Fe content also enable the corundum preform to have high CO corrosion resistance, thereby providing guarantee for prolonging the overall service life of the sealing material.

Description

technical field [0001] The invention relates to a sealing device for an electrode of a calcium carbide furnace, which belongs to the field of sealing and heat insulating devices. Background technique [0002] Calcium carbide is an important basic chemical product. In recent years, with the continuous rise of international oil prices and the continuous increase in the cost of petroleum deep-processing products, calcium carbide process polyvinyl chloride and other downstream industries of calcium carbide have developed rapidly, and the demand and production capacity of calcium carbide are also increasing day by day. The technical level of calcium carbide furnace equipment in my country's calcium carbide industry has also been greatly improved. In the calcium carbide furnace, the electric energy is converted into heat energy, so that the carbon of the carbon raw material and the calcium in the quicklime undergo complex physical and chemical changes to synthesize calcium carbide....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B7/12F27D11/10
CPCH05B7/12F27D11/10
Inventor 陈磊王有月张晔曾鲁举史国琴俞永平吴顺年吴跃峰周红娟蒋明
Owner 宜兴瑞泰耐火材料有限公司