Refractory castable

A technology of refractory castables and refractory materials, applied in the field of refractory castables, can solve problems such as insufficient green body strength, difficult setting time to meet site construction conditions, and restrictions on large-scale use

Inactive Publication Date: 2019-01-04
BAOJIUHE REFRACTORY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, silica sol combined with cement-free castables has major defects at the same time, for example: insufficient green strength leads to demoulding and construction problems; its setting time is affected by temperature and pH value and it is difficult to meet the site construction conditions; silica sol is a kind of Water-based liquid adhesives, storage, transportation and application at low temperatures are challenging
These defects greatly limit the wide-scale use of this castable

Method used

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preparation example Construction

[0033] The second aspect of the present invention provides the method for preparing the refractory castable, comprising: mixing various raw materials to obtain the refractory castable.

[0034] The third aspect of the present invention provides the use of the refractory castable in the field of tapping channel refractory preparation.

[0035] The fourth aspect of the present invention provides a tapping trough refractory material prepared from the refractory castable.

[0036] The fifth aspect of the present invention provides a method for preparing the tapping trough refractory material, comprising: mixing the refractory castable with an appropriate amount of water, and hardening and forming. Those skilled in the art can choose a suitable method to prepare the tapping trough refractory material through the refractory castable. Generally speaking, the refractory castable can be mixed with an appropriate amount of water to form a slurry, poured, and hardened. After forming, th...

Embodiment 1

[0045] The formula of each example of the refractory castable used in the embodiment is specifically shown in table 1:

[0046] Table 1

[0047]

[0048] Mix each raw material with water according to the formula, stir evenly, see Table 2 for the specific mixing ratio, wherein, the amount of water added (%)=(the quality of added water ÷ the sum of the raw materials in Table 1)*100%.

[0049] The preparation method of the iron channel refractory material is as follows:

[0050] 1) After mixing the raw materials except for the fused corundum according to the ratio of the raw materials, put them into the kneader and knead them fully, and the kneading time is about 3 minutes;

[0051] 2) Put the regenerated corundum aggregate into the kneader and fully knead it, then package it for storage, and the kneading time is about 3 minutes;

[0052] 3) Then add an appropriate amount of water and stir for another 3 minutes, then vibrate and form, the sample size is 40*40*160mm.

[0053...

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Abstract

The invention relates to the field of metallurgy, in particular to a refractory castable. The refractory castable provided by the invention comprises the following components of electro-melting corundum 10-5, electro-melting corundum 5-3, electro-melting corundum 3-1,electro-melting corundum 1-0, a carborundum powder 1-0, a carborundum powder -200M, an aluminum oxide powder, pelleted pitch, a metallic silicon powder, a coagulant, a metallic aluminum powder, organic fibers and a powdery bonding agent. The refractory castable and iron tap channel refractory materials formed through the refractory castable disclosed by the invention have the main advantages that the high temperature properties are better, liquid phases formed through a reaction of cement and SiO2 are avoided mainly due to theformation of mullite phases during high-temperature treatment of casting materials, and the high-temperature properties of the material are improved.

Description

technical field [0001] The invention relates to the field of metallurgy, in particular to a refractory castable. Background technique [0002] As an important facility in the field of blast furnace metallurgy, the tap trough's performance has an important impact on the overall production cost. By improving the formula of the refractory material of the tapping trough to increase the cycle of receiving iron in the tapping trough and reduce the unit consumption of materials, the benefits of the project can be maximized. [0003] At present, the castables of the tap trough are all low cement castable systems, and the cement-free system has always been the development direction of the tap trough and even the entire refractory industry. At present, it is widely used, and the most developed one is silica sol combined with cementless castable. Compared with low-cement castables, the main advantages of silica sol combined with cement-free castables are quick drying and good high te...

Claims

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Application Information

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IPC IPC(8): C04B35/101
CPCC04B35/101C04B2235/3222C04B2235/3418C04B2235/3826C04B2235/402C04B2235/9607
Inventor 杨大鹏
Owner BAOJIUHE REFRACTORY
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