Anti-corrosion composite layer, application and preparation method of anti-corrosion composite lining layer

A composite layer and preparation process technology, applied in the direction of coating, process efficiency improvement, metal material coating process, etc., can solve the problems of low physical penetration resistance, metal shell contact, corrosive leakage, etc., and achieve good corrosion resistance Penetration, Thickness Reduction, High Compatibility Effect

Active Publication Date: 2020-08-25
SHENHUA ZHUNNENG RESOURCE COMPREHENSIVE DEV COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, for this type of working conditions, most of the lining technologies used in China adopt the composite lining technology of "shell-lined rubber-inorganic cement-acid-resistant brick". The disadvantage of this technology is the physical resistance of inorganic silicate adhesives. The permeability is low. Once the slurry solution undergoes multiphase flow high-temperature erosion at the lining interface, it will penetrate into the rubber

Method used

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  • Anti-corrosion composite layer, application and preparation method of anti-corrosion composite lining layer
  • Anti-corrosion composite layer, application and preparation method of anti-corrosion composite lining layer
  • Anti-corrosion composite layer, application and preparation method of anti-corrosion composite lining layer

Examples

Experimental program
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Effect test

Example Embodiment

[0049] Example 1

[0050] The composition of the amorphous alloy used in this embodiment is (Ni 58 Ta 34 Sn 8 ) 97 Er 3 Each elemental metal with a purity of 99.99% is selected for master alloy smelting in a high-purity argon atmosphere where titanium ingots absorb oxygen in a vacuum non-consumable electric arc furnace, and the obtained master alloy is used to prepare amorphous alloy powder and amorphous flakes.

[0051] (1) Preparation of amorphous alloy powder

[0052] The master alloy is made into amorphous alloy powder through the nitrogen atomization process, the atomization pressure is 10MPa, the atomization temperature is 1600K, the mass flow ratio is about 0.6, and the particle size is 25-30μm, and the microscopic morphology is spherical And ellipsoidal amorphous alloy powder.

[0053] (2) Preparation of amorphous flakes

[0054] The mother alloy is ultrasonically cleaned and put into a quartz tube with a small hole at the bottom. It is remelted by an induction heating device o...

Example Embodiment

[0062] Example 2

[0063] The composition of the amorphous alloy used in this embodiment is (Ni 55 Ta 35 Sn 10 ) 96 Er 4 , Smelting in accordance with the method of Example 1 and obtaining a master alloy.

[0064] (1) Preparation of amorphous alloy powder

[0065] The master alloy is made into amorphous alloy powder through the nitrogen atomization process, the atomization pressure is 8MPa, the atomization temperature is 1800K, and the mass flow ratio is about 0.6. It is further sieved into a particle size of 30-40μm and a microscopic sphere. And ellipsoidal amorphous alloy powder.

[0066] (2) Preparation of amorphous flakes

[0067] The mother alloy is ultrasonically cleaned and put into a quartz tube with a small hole at the bottom. It is remelted by an induction heating device on a vacuum stripping machine, and the molten alloy is blown onto the surface of a high-speed rotating copper roller with high pressure argon to obtain a width of 2 to 3 mm. For the thin strip sample with a ...

Example Embodiment

[0074] Example 3

[0075] The composition of the amorphous alloy used in this embodiment is (Ni 57 Ta 34 Sn 9 ) 94 Er 6 , Smelting in accordance with the method of Example 1 and obtaining a master alloy.

[0076] (1) Preparation of amorphous alloy powder

[0077] The master alloy is made into amorphous alloy powder through the nitrogen atomization process, the atomization pressure is 9MPa, the atomization temperature is 1700K, the mass flow ratio is about 0.6, and the particle size is 30-40μm, and the microscopic morphology is spherical And ellipsoidal amorphous alloy powder.

[0078] (2) Preparation of amorphous flakes

[0079] The mother alloy is ultrasonically cleaned and put into a quartz tube with a small hole at the bottom. It is remelted by an induction heating device on a vacuum stripping machine, and the molten alloy is blown onto the surface of a high-speed rotating copper roller with high pressure argon to obtain a width of 2 to 3 mm. For thin strip samples with a thickness...

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Abstract

The invention provides an anti-corrosion composite layer. The anti-corrosion composite layer sequentially comprises an amorphous alloy layer, an anti-corrosion connecting layer and an acid-resistant ceramic layer. The invention further provides application of the anti-corrosion composite layer serving as an anti-corrosion composite lining layer of a pipeline or a container and a preparation methodof the anti-corrosion composite lining layer for the pipeline or the container. The anti-corrosion composite layer has a novel structural composition, the structure is easy to form, firm and stable in combination, adjustable in thickness and excellent in corrosion resistance, has multiple protection effects aiming at special working conditions in the fields of chemical industry, metallurgy and the like, can be used as the lining layer of equipment such as the pipeline and the container, and is particularly suitable for a process for producing aluminum oxide from fly ash through a "one-step acid dissolution method".

Description

technical field [0001] The invention relates to the field of anti-corrosion technology, in particular to an anti-corrosion composite layer, its application and a preparation method for an anti-corrosion composite inner lining layer for pipelines or containers. Background technique [0002] Shenhua Zhuneng Resources Comprehensive Development Co., Ltd. made full use of the advantages of "high aluminum and rich gallium" in Zhungeer Coalfield, and successfully developed the "one-step acid-dissolving method" of circulating fluidized bed fly ash to extract metallurgical-grade alumina in China. This project is of great significance to alleviating the shortage of bauxite resources and ensuring the safety of aluminum industry resources. [0003] In the relatively harsh process stage of the "one-step acid dissolution method", the working conditions inside the container and the high-temperature end pipeline are relatively harsh, mainly including: high working temperature (within the ra...

Claims

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Application Information

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IPC IPC(8): C23C4/08C23C4/134C23C22/38C22B3/02B05D7/24B05D7/22B05D7/14
CPCC23C4/08C23C4/134C23C22/38C22B3/02B05D7/24B05D7/225B05D7/227B05D7/14Y02P10/20
Inventor 赵宇航高莹张云峰徐靓崔永杰赵飞燕郭志峰李超王丹妮
Owner SHENHUA ZHUNNENG RESOURCE COMPREHENSIVE DEV COMPANY
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