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High-strength and wear-resistant castable for middle back section of blast furnace water slag punching groove

A blast furnace water slag and castable technology, applied in the field of high-strength wear-resistant castables, can solve problems such as difficult decomposition, and achieve the effects of low cost, cost reduction and good wear resistance

Active Publication Date: 2018-09-28
中冶武汉冶金建筑研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to its dense structure, high hardness, and difficulty in being decomposed, ceramic waste piled up like mountains, which brought enormous pressure to the local environment

Method used

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  • High-strength and wear-resistant castable for middle back section of blast furnace water slag punching groove
  • High-strength and wear-resistant castable for middle back section of blast furnace water slag punching groove
  • High-strength and wear-resistant castable for middle back section of blast furnace water slag punching groove

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A high-strength wear-resistant castable used in the middle and back sections of the blast furnace slag punching tank, which is composed of main raw material components and external components; the main raw materials and their mass percentages are: waste ceramic aggregate 45%, brown corundum 25%, Silicon carbide fine powder 4.5%, calcium aluminate cement 16%, chromium trioxide fine powder 2%, heat-resistant steel fiber 3%, silicon dioxide fine powder 4%. The mass percentages of the added components and the total mass of the above-mentioned main raw materials are: 0.1% of organic explosion-proof fiber, 0.5% of boron carbide, 0.2% of water reducer (polycarboxylate water reducer FS65 added 0.05%, sodium hexametaphosphate Addition 0.15%), retarder 0.03% (citric acid addition 0, oxalic acid addition 0.03%).

[0027] Then add 5.5wt% water of the above mixture, stir evenly, vibrate and shape, and finally maintain at room temperature for 12-48 hours to release the mold.

[0028...

Embodiment 2

[0035] A high-strength wear-resistant castable used in the middle and back sections of blast furnace slag punching tanks, which is composed of main raw material components and external components; the main raw materials and their mass percentages are: waste ceramic aggregate 55%, brown corundum 13%, Silicon carbide fine powder 2%, calcium aluminate cement 20%, chromium trioxide fine powder 1.5%, heat-resistant steel fiber 2%, silicon dioxide fine powder 5%. The mass percentages of the added components and the total mass of the above-mentioned main raw materials are: 0.08% of organic explosion-proof fiber, 1.5% of boron carbide, 0.2% of water reducer (polycarboxylate water reducer FS65 added 0.1%, sodium hexametaphosphate Addition amount 0.1%), retarder 0.06% (citric acid addition amount 0.05%, oxalic acid addition amount 0.01%).

[0036] Then add 6.5wt% water of the above mixture, stir evenly, vibrate and form, and finally maintain at room temperature for 12-48 hours to demoul...

Embodiment 3

[0044]A high-strength wear-resistant castable for the middle and rear sections of the blast furnace slag punching tank, which is composed of main raw material components and external components; the main raw materials and their mass percentages are: waste ceramic aggregate 65%, brown corundum 3%, Silicon carbide fine powder 5%, calcium aluminate cement 18%, chromium trioxide fine powder 1%, heat-resistant steel fiber 1%, silicon dioxide fine powder 6%. The mass percentages of the added components and the total mass of the above-mentioned main raw materials are: 0.05% of organic explosion-proof fiber, 1% of boron carbide, 0.15% of water reducer (polycarboxylate water reducer FS65 added 0.15%, sodium hexametaphosphate Addition 0), retarder 0.04% (citric acid addition 0.04%, oxalic acid addition 0).

[0045] Then add 7.5wt% water of the above mixture, stir evenly, vibrate and shape, and finally maintain at room temperature for 12-48 hours to demould.

[0046] Al in used waste ce...

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Abstract

The invention discloses a high-strength and wear-resistant castable for a middle back section of a blast furnace water slag punching groove. The castable comprises the following raw material components in parts by mass: 40 to 70 parts of waste ceramic aggregate, 3 to 25 parts of brown aluminum oxide, 1 to 5 parts of silicon carbide fine powder, 10 to 25 parts of calcium aluminate cement, 0.5 to 5parts of chromium sesquioxide fine powder, 1 to 4 parts of heat-resistant steel fiber and 1 to 8 parts of silicon dioxide micropowder; based on the mass percentage of the raw material components, theadditional components comprise 0.05 to 0.5 percent of organic explosion-proof fiber, 0.5 to 1.5 percent of boron carbide, 0.05 to 0.5 percent of water reducer and 0.02 to 0.2 percent of retarder. Thewaste ceramic serves as the main raw material to produce the wear-resistant castable of the middle back section of blast furnace punching slag by utilizing the characteristics that the waste ceramic material is compact in structure, high in hardness and washing-out resistant, so the characteristics of low cost, high strength, high wear resistance, long service life and the like are achieved, and energy saving and emission reduction are realized.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a high-strength wear-resistant pouring material used for the middle and rear sections of blast furnace water slag punching tanks. Background technique [0002] The slag flushing tank is one of the key equipment for blast furnace slag punching. Its main working principle is: liquid blast furnace slag flows from the slag ditch into the slag flushing tank (slag flushing ditch), and high-speed water flows from the slag falling point The lower part is sprayed out, and the slag is instantly quenched into granular slag, which is washed into the condensation tower or slag pool. The main reasons for the damage to the lining in the middle and rear sections of the slag flushing ditch are as follows: [0003] 1. Strong flushing when the slag-water mixture flows at high speed (about 20m / s). [0004] 2. The alternating action of red slag and water spray in the slag fl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/103C04B35/105C04B35/622
CPCC04B35/103C04B35/105C04B35/62204C04B2235/3222C04B2235/3418C04B2235/3826C04B2235/5216C04B2235/77C04B2235/96
Inventor 薛海涛侯玮玮项冰彭云涛丛培源刘会永
Owner 中冶武汉冶金建筑研究院有限公司
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