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Oxidation-resistant preparations for carbon products

A carbon product and oxidation-resistant technology, which is applied in the field of surface anti-oxidation treatment reagents, can solve the problems that the performance of antioxidants cannot be taken into account, and achieve the effects of good anti-oxidation and corrosion, saving workload, and good thermal shock resistance

Active Publication Date: 2017-05-24
NANTONG YANGZI CARBON
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0007] To overcome the shortcomings of the existing antioxidants of carbon products that cannot take into account the multiple performances, and to provide an oxidation-resistant preparation of carbon products with good conductivity, wear resistance and thermal shock resistance

Method used

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  • Oxidation-resistant preparations for carbon products

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Embodiment Construction

[0024] use as figure 1 The oxidation-resistant preparation of carbon products configured in the process flow shown contains a mixture or compound of silica and alumina, and also contains a variety of ingredients that can improve the physical properties of the anti-oxidation thin layer: semiconducting metals with increased conductivity Oxides, metal oxides with resistance to steel slag wear, substances with improved thermal shock resistance.

[0025] Among them, the semiconductor metal oxide is Cu 2 O, NiO, CoO, FeO, VO 2 One or more of them, the substances that improve thermal shock resistance are MgO, Cr 2 o 3 , one or more of graphite powder, the metal oxides that are resistant to steel slag wear are MgO, Al 2 o 3 , SiC, one or more, and the refractory fiber material to improve the mechanical properties is C chopped fiber or SiC whisker.

[0026] It is prepared with water or other solvents so that it can adhere to the outer surface of carbon products and form a solid a...

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Abstract

The invention provides an oxidation-prevention preparation for a carbon product. With water or other solvents for modulation, the oxidation-prevention preparation can be attached to the outer surface of the carbon product and forms an oxidation-prevention thin layer after being dried or sintered, and the oxidation-prevention preparation contains a mixture or a compound of silicon dioxide and aluminum oxide and additionally contains various components capable of improving the physical property of the oxidation-prevention thin layer. The oxidation-prevention preparation comprises a semiconductor metallic oxide improving electric conductivity and a metal oxide having the capability of resisting slag abrasion and can have a substance improving the thermal shock resistance. The oxidation-prevention preparation has good oxidation corrosion resistance, good slag abrasion resistance, very good thermal shock resistance in high-temperature and high-oxygen environments and long in service life.

Description

technical field [0001] The invention relates to a surface anti-oxidation treatment agent for carbon products and a preparation and use method thereof. Background technique [0002] Carbon products such as graphite have good electrical conductivity, high temperature resistance, and mechanical properties, so they can be used as electrode materials and are widely used in metallurgical steelmaking industries and electrochemical industries. Graphite electrodes are mainly made of petroleum coke and needle coke, and coal tar pitch is used as a binder. They are made through processes such as calcination, batching, pressing, roasting, graphitization, and machining. They can be generally replaced in large-scale industrial production lines. Copper electrodes that are expensive and have a short lifespan. However, since the carbon material itself has a certain chemical activity at high temperature, it is easy to be oxidized and corroded in a high-temperature and high-oxidation atmospher...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B41/50
Inventor 刘明张雪梅
Owner NANTONG YANGZI CARBON
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