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Wear resistance casting material for ladle

A technology of castables and ladles, applied in the field of castables, can solve problems such as short service life and poor wear resistance, and achieve the effects of good construction performance, easy slag removal, and excellent thermal shock stability

Inactive Publication Date: 2014-01-01
天津振普筑炉衬里工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional castables have poor wear resistance and short service life

Method used

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  • Wear resistance casting material for ladle
  • Wear resistance casting material for ladle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A wear-resistant castable for ladle, the components and weight of the castable are: 100Kg of corundum material; 10Kg of silicon carbide; 1Kg of graphite; 0.1Kg of explosion-proof agent; 0.1Kg of composite admixture; In the corundum material, corundum aggregate is 60Kg and corundum fine powder 40Kg, silicon carbide is black silicon carbide with a content of 93%, graphite is flake graphite, the explosion-proof agent of this embodiment is fiber, and the composite admixture of this embodiment is sodium phosphate, also It can be phosphate such as potassium phosphate, and the binder in this embodiment is alumina.

Embodiment 2

[0019] A wear-resistant castable for ladle, the components and weight of the castable are: 100Kg of corundum material; 50Kg of silicon carbide; 5Kg of graphite; 0.5Kg of explosion-proof agent; 0.5Kg of composite admixture; The corundum aggregate in the corundum material is 70Kg and corundum fine powder 30Kg, the silicon carbide is black silicon carbide with a content of 95%, and the graphite is flake graphite. The explosion-proof agent in this embodiment is aluminum chloride, the composite admixture in this embodiment is sodium carboxylate, or carboxylate such as potassium carboxylate, and the bonding agent in this embodiment is silicon oxide.

Embodiment 3

[0021] A wear-resistant castable for ladle, the components and weight of the castable are: 100Kg of corundum material; 90Kg of silicon carbide; 9Kg of graphite; 0.9Kg of explosion-proof agent; 0.9Kg of composite admixture; In the corundum material, corundum aggregate is 70Kg and corundum fine powder 30Kg, silicon carbide is black silicon carbide with a content of 91%, graphite is flake graphite, the explosion-proof agent of this embodiment is aluminum chloride, and the composite admixture of this embodiment is stearin acid, the binder is zirconia.

[0022] After weighing according to the weight ratio during the production of the present invention, these raw materials are measured according to the principle of the closest packing, and after mixing, the viscous substance is formed, or has plasticity, or has certain fluidity, and can be pounded or formed by vibration. When in use, spread the mixed materials in the ladle, the bottom of the ladle need not be supported, and the side...

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Abstract

The present invention relates to a wear resistance casting material for ladle. The wear resistance casting material comprises, by weight, 1 part of a corundum material, 0.1-1 part of silicon carbide, 0.01-0.1 part of graphite, 0.001-0.1 part of an explosion-proof agent, 0.001-0.1 part of a composite additive, and 0.1-0.25 part of a binding agent. According to the present invention, the cement component-free inorganic nanometer binding agent is adopted, good quality electrofusion or sintering corundum or special grade alumina clinker is adopted as the main material, silicon carbide, graphite, an explosion-proof agent and the like are added, and variety and the number of a composite additive are optimized to prepare the wear resistance casting material with characteristics of rapid baking, high high-temperature strength, good high-temperature wear resistance, excellent thermal shock stability and good construction performance; and ladle bottom of the bottom washing type ladle with a capacity of one ton is used in gray iron casting, wherein the service life can be more than 3000 times and is more than two times the service life of the conventional material, and slag removing is easy.

Description

technical field [0001] The invention belongs to the field of castables, in particular to a wear-resistant castable for ladles. Background technique [0002] Ladles are used in the steel and foundry industries. The function of the molten iron ladle is to transfer the high-temperature molten iron flowing out of the blast furnace tapping trough, cupola chute, and electric furnace chute to the pouring process or subsequent processes. The molten iron ladle needs to be preheated with high-temperature molten iron before use, and then filled with molten iron. After being transported to the required location, the molten iron is poured out, and then returned to the front of the furnace for the next cycle of loading and unloading molten iron. During use, the ladle needs to withstand the thermal shock of hot molten iron at 1350-1500°C, molten iron erosion, molten iron wear, and thermal shock caused by drastic temperature changes. Generally, low-cement or ultra-low-cement castables are ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B35/106C04B35/105C04B35/103C04B35/567
Inventor 苏彦彬
Owner 天津振普筑炉衬里工程有限公司
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