A kind of plastic for intermediate frequency furnace lining repair and its preparation method

A furnace lining repairing and intermediate frequency furnace technology is applied in the field of plastics for intermediate frequency furnace lining repairing and its preparation, which can solve the problems of short service life, short storage time, low early strength, etc. low cost effect

Active Publication Date: 2018-12-14
LENGSHUIJIANG HUAKE PERFORMANCE MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the main problems of common repair plastics are: 1) poor adhesion, easy to fall off during repair; 2) slow hardening at room temperature, low early strength; 3) short service life after repair; 4) short storage time; 5 ) is not easy to construct, and the work efficiency is low when repairing
In particular, the short shelf life greatly affects the use of repairable plastics

Method used

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  • A kind of plastic for intermediate frequency furnace lining repair and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A plastic material for repairing the lining of an intermediate frequency furnace and a preparation method thereof. Include the following steps:

[0030] 27-30wt% alumina powder, 12-16wt% kyanite, 3-5wt% chromium oxide powder, 2-3wt% plasticizer as the base material, 50-55wt% alumina particles as the Aggregate, the sum of base material and aggregate is the raw material; first mix the base material in the mixer for 1~1.5h, then add the aggregate and the mixed base material into the mixer, and add the The raw materials are 3-5wt% phosphoric acid and 3-5wt% water, mixed and milled for 8-10 minutes to obtain semi-dry mud.

[0031] Put the semi-dry mud into a sealed container, trap the semi-dry mud for 24-48 hours, then add the trapped semi-dry mud into the mixer, add 2-3wt% phosphoric acid, 0.05-0.15wt% of the raw materials % corrosion inhibitor, 0.1-0.5wt% humectant, and 3-5wt% water, mixed and milled for 5-8 minutes to obtain a mixed-milled mud, which was then squeezed i...

Embodiment 2

[0034] A plastic material for repairing the lining of an intermediate frequency furnace and a preparation method thereof. Include the following steps:

[0035] 21-24wt% alumina powder, 18-20wt% kyanite, 2-4wt% chromium oxide powder, 2-3wt% plasticizer as the base material, 50-55wt% alumina particles as the Aggregate, the sum of base material and aggregate is the raw material; first mix the base material in the mixer for 1~1.5h, then add the aggregate and the mixed base material into the mixer, and add the The raw materials are 3-5wt% phosphoric acid and 3-5wt% water, mixed and milled for 8-10 minutes to obtain semi-dry mud.

[0036] Put the semi-dry mud into a sealed container, trap the semi-dry mud for 24-48 hours, then add the trapped semi-dry mud into the mixer, add 2-3wt% phosphoric acid, 0.05-0.15wt% of the raw materials % corrosion inhibitor, 0.1-0.5wt% humectant, and 3-5wt% water, mixed and milled for 5-8 minutes to obtain a mixed-milled mud, which was then squeezed i...

Embodiment 3

[0039] A plastic material for repairing the lining of an intermediate frequency furnace and a preparation method thereof. Include the following steps:

[0040] 23-27wt% alumina powder, 11-14wt% kyanite, 3-5wt% chromium oxide powder, 3-4wt% plasticizer as the base material, 55-60wt% alumina particles as the Aggregate, the sum of base material and aggregate is the raw material; first mix the base material in the mixer for 1~1.5h, then add the aggregate and the mixed base material into the mixer, and add the The raw materials are 3-5wt% phosphoric acid and 3-5wt% water, mixed and milled for 8-10 minutes to obtain semi-dry mud.

[0041] Put the semi-dry mud into a sealed container, trap the semi-dry mud for 24-48 hours, then add the trapped semi-dry mud into the mixer, add 2-3wt% phosphoric acid, 0.05-0.15wt% of the raw materials % corrosion inhibitor, 0.1-0.5wt% humectant, and 3-5wt% water, mixed and milled for 5-8 minutes to obtain a mixed-milled mud, which was then squeezed i...

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Abstract

The invention relates to a plastic material for repairing a medium-frequency furnace lining and a preparation method of the plastic material. According to the technical scheme, the preparation method comprises the following steps: taking 18 to 30 percent by weight of aluminum oxide powder, 10 to 20 percent by weight of kyanite, 2 to 7 percent by weight of chromium oxide powder and 2 to 5 percent by weight of a plasticizer as base materials, and taking 50 to 65 percent by weight of alumina particles as aggregates, wherein the sum of the base materials and the aggregates are raw materials; mixing the base materials for 1 to 1.5h, then adding the aggregates and the mixed base materials into a mixing and grinding machine, adding 3 to 5 percent by weight of phosphoric acid and 3 to 5 percent by weight of water, mixing and grinding, thus obtaining semi-dry paste; aging, adding the aged semi-dry paste into the mixing and grinding machine, additionally adding 2 to 3 percent by weight of phosphoric acid, 0.05 to 0.15 percent by weight of a corrosion inhibitor, 0.1 to 0.5 percent by weight of a moisturizing agent and 3 to 5 percent by weight of water, mixing and grinding, thus obtaining mixed paste, extruding and molding the mixed paste, thus obtaining the plastic material for repairing the medium-frequency furnace lining. The production cost is low, the prepared product is long in storage time, easy to construct and excellent in application performance.

Description

technical field [0001] The invention belongs to the technical field of refractory materials for intermediate frequency furnaces. In particular, it relates to a plastic material for lining repair of an intermediate frequency furnace and a preparation method thereof. Background technique [0002] The intermediate frequency furnace has the characteristics of fast melting speed, high production efficiency, flexible use, low pollution, good electromagnetic stirring effect and high efficiency and energy saving. and large-capacity development. The lining material of the intermediate frequency furnace is an important part of the intermediate frequency furnace. During the smelting process of the intermediate frequency furnace, due to the erosion of the metal melt and slag and the thermal shock caused by frequent temperature changes, cracks or peeling of the furnace lining will occur locally . The repairing plastic can be coated on the cracked or spalled part, which can form a repa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/105C04B35/626C04B35/632C04B35/63C04B35/634C04B35/636
CPCC04B35/105C04B35/6261C04B35/6303C04B35/632C04B35/63444C04B35/6365C04B2235/3463C04B2235/349C04B2235/77C04B2235/96
Inventor 袁添翼李远兵余东寿袁聪周伟强
Owner LENGSHUIJIANG HUAKE PERFORMANCE MATERIALS
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