Flame-proof mending material for foundry ladle and manufacturing method thereof

A repairing material and ladle technology, applied in the field of refractory materials, can solve the problems of large influence on the life of the ladle, heavy erosion of repairing materials, and poor durability, so as to reduce the repair time, improve the corrosion resistance and reduce the cost Effect

Inactive Publication Date: 2009-02-18
武钢集团有限公司
View PDF0 Cites 24 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Clay bricks are used for traditional ladle masonry, and the service life is relatively high. However, due to the desulfurization treatment process, some desulfurizers and slag-removing agents need to be added to the molten iron, which has a great impact on the service life of the ladle. In the past, the ladle The service life of the ladle is more than 600 times, and the service life of the ladle is only 200 to 300 times. Even if the whole tank is built with castables, the effect is not ideal
[0003] At p...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The refractory repair material for ladle is a composition, which includes the components and weights: repair material matrix: alumina 19.5kg, scorched gemstone 68kg, of which: the repair material matrix (coarse aggregate) with a particle size of 1~5mm The weight accounts for 85% of the weight of the repair material matrix, the weight of the repair material matrix (powder) with a particle size of 0.01-1mm accounts for 15% of the weight of the repair material matrix; 6kg of silicon carbide with a particle size of less than 1mm, and silicon oxide powder with a particle size of 0.5 to 90μm 3kg, 0.9kg calcium aluminate cement, 2.5kg sodium tripolyphosphate, 0.1kg sodium cellulose.

[0025] The specific steps of the preparation method of the refractory repair material are as follows: firstly mix the repair material matrix uniformly, then add other components to mix uniformly, and package the finished product.

[0026] The steps of using the refractory repair material are as follo...

Embodiment 2

[0029] The composition and weight of the refractory repair material for hot metal ladle are: repair material matrix: corundum 15.5kg, alumina 68kg, of which: the weight of the repair material matrix (coarse aggregate) with a particle size of 1~5mm accounts for the weight of the repair material matrix 65%, the weight of the repair material matrix (powder) with a particle size of 0.01 to 1mm accounts for 35% of the weight of the repair material matrix, 7kg of silicon carbide smaller than 200 mesh (grain size less than 1mm), and 3kg of silicon oxide powder with a particle size of 0.5 to 90μm, 3kg of alumina powder with a particle size of 0.5-90μm, 3kg of calcium aluminate cement, 0.4kg of sodium hexametaphosphate, and 0.1kg of sodium alginate.

[0030] The preparation method and use method of the refractory repair material for ladle are the same as in Example 1.

[0031] The compressive strength of the refractory repair material for hot metal ladle after drying at 110℃×24h is 21.7MPa...

Embodiment 3

[0033] The composition and weight of the refractory repair material for molten iron ladle are: repair material matrix: brown corundum 40kg, sub-white corundum 46.5kg, of which: the weight of the repair material matrix (coarse aggregate) with a particle size of 1~5mm accounts for the weight of the repair material matrix 65% of the weight, the weight of the repair material matrix (powder) with a particle size of 0.01-1mm accounts for 35% of the weight of the repair material, 5kg of silicon carbide less than 325 mesh (particle size less than 1mm), 3kg of alumina powder, calcium aluminate cement 5kg, 0.35kg of sodium tripolyphosphate; 0.15kg of sodium cellulose.

[0034] The preparation method and use method of the refractory repair material for ladle are the same as in Example 1.

[0035] The compressive strength of the refractory repair material for hot metal ladle after drying at 110℃×24h is 37.3MPa; the compressive strength after burning at 1100℃×3h is 46.4MPa; the compressive str...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Compressive strengthaaaaaaaaaa
Compressive strengthaaaaaaaaaa
Compressive strengthaaaaaaaaaa
Login to view more

Abstract

The invention relates to a fire proof patching material used for foundry ladle and a preparation method thereof, the fire proof patching material is a combination, and the contained components and weight percentage occupied in the combination contain: 55 to 90 percent of patching material basal body, 1 to 35 percent of carborundum, 3 to 15 percent of monox micro powder or/and alumina micro powder, 0.5 to 15 percent of calcium aluminate cement, 0.01 to 3 percent of trimeric sodium phosphate or sodium hexametahposphate and 0.001 to 2 percent of sodium cellulose or sodium alginate; the patching material basal body is the combination of one or several corundum, bauxite and flint clay. The preparation method has the following steps: first uniformly mixing the patching material basal body, then adding other components to be uniformly mixed, and finishing goods. The fire proof patching material contains the carborundum, the carborundum has the characteristic of anti-corrosion to low-melting-point materials of fluorite, lime, soda, and the like, makes anti-corrosion performance of the patching material be enhanced, makes the patching material be not easy to be peeled off, and makes the life of the foundry ladle be enhanced. The preparation method of the fire proof patching material is simple and has low cost.

Description

Technical field [0001] The invention relates to a refractory material for repairing, especially a refractory repairing material for a ladle and a preparation method thereof. Background technique [0002] The masonry of the traditional ladle is made of clay bricks, which has a relatively long life. However, due to the desulfurization process, it is necessary to add part of the desulfurization agent and slagging agent to the hot metal, which has a greater impact on the life of the hot metal. The life of the iron ladle is more than 600 times, and the life of the molten iron ladle is only 200 to 300 times. Even if the castable is used to build the tank as a whole, the effect is not ideal. [0003] At present, there are repair materials used to repair molten iron ladle. The main components of the current repair materials are alumina, clay, and a higher content of phosphate or cement as the binder. This repair material is easy to peel off and has anti-erosion performance. Poor, poor du...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C04B35/66
Inventor 徐国涛李淑忠张洪雷
Owner 武钢集团有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap