Phenolic resin composition for stemming, preparation method of composition and stemming

A technology of phenolic resin and composition, which is applied in the field of refractory materials, can solve the problems of long clay hardening time, unfavorable blast furnace smelting, and taphole splashing, etc., and achieves the effect of good opening performance, low cost, and improved moisture retention performance

Active Publication Date: 2015-04-22
SHANDONG SHENGQUAN NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, most of the anhydrous taphole clay only uses tar or anthracene oil as a binding agent, so that the hardening time of the taphole clay is too long or too short
If the hardening speed of the gun mud is too slow and the time is too long, splashes will be caused when the tap hole is opened; and if the hardening speed is too fast and the time is too short, it is easy to cause the mud gun to harden when heated and cause the tap hole to be blocked. It is not conducive to the smooth progress of blast furnace smelting

Method used

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  • Phenolic resin composition for stemming, preparation method of composition and stemming
  • Phenolic resin composition for stemming, preparation method of composition and stemming
  • Phenolic resin composition for stemming, preparation method of composition and stemming

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preparation example Construction

[0033] Correspondingly, the invention provides a kind of preparation method for the phenolic resin composition of gun clay, comprising:

[0034] Mixing 30%-50% by weight of thermosetting phenolic resin, 5%-20% by weight of organic solvent and the remainder of carbon-containing organic binder to obtain a phenolic resin composition for gun putty.

[0035] In the embodiment of the present invention, each raw material is weighed according to the above weight percentage, and then the raw materials are mixed and stirred evenly to obtain the phenolic resin composition for gun clay.

[0036] In the present invention, the form of the thermosetting phenolic resin is liquid, and its viscosity at 25°C is preferably 2000mPa·s~16000mPa·s, more preferably 2500mPa·s~15000mPa·s, which can suitably improve the hardening of the gun putty rate. The present invention has no special limitation on the source of the thermosetting phenolic resin, which can be purchased from the market or prepared by ...

Embodiment 1

[0053] According to the molar ratio of 1:1.5:0.01, add phenol, formaldehyde, and sodium hydroxide into the reaction kettle, stir, and heat to 60°C for reaction. After constant temperature for 4 hours, distill under reduced pressure at 60°C to the viscosity of the resin at 25°C It is 15000mPa·s, and a thermosetting phenolic resin is obtained.

[0054] According to the weight ratio of 40:20:40, the thermosetting phenolic resin is mixed with ethylene glycol and tar to obtain a phenolic resin composition for gun clay.

[0055] The quality index detection of the phenolic resin composition showed that the viscosity at 25°C was 2800mPa·s, the water content was 2.5%, and the curing time at 135°C was 17.5min.

Embodiment 2

[0057] According to the molar ratio of 1:2.5:0.02, add phenol, formaldehyde, and barium hydroxide into the reaction kettle, stir, and heat to 70°C for reaction. After constant temperature for 3 hours, distill at 70°C under reduced pressure to the viscosity of the resin at 25°C to 10000mPa·s to obtain a thermosetting phenolic resin.

[0058] According to the weight ratio of 30:10:60, the thermosetting phenolic resin is mixed with glycerol and anthracene oil to obtain a phenolic resin composition for gun clay.

[0059] The quality index test of the phenolic resin composition showed that the viscosity at 25°C was 3700mPa·s, the moisture content was 2.9%, and the curing time at 135°C was 16.3min.

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Abstract

The invention provides a phenolic resin composition for a stemming and a preparation method of the composition. According to the method, 30-50wt% of thermosetting phenolic resin, 5-20wt% of organic solvent and the balance of a carbon-containing organic binder are mixed to obtain the phenolic resin composition for stemming. The invention further provides a stemming. The stemming comprises a refractory aggregate and a binding agent, wherein the binding agent is the phenolic resin composition provided by the invention. According to the phenolic resin composition for the stemming, the thermosetting phenolic resin and the carbon-containing organic binder are mixed and used together, and the proportions of the thermosetting phenolic resin and the carbon-containing organic binder are controlled in the specified ranges, and then an appropriate amount of the organic solvent is added, so that the stemming has a moderate curing speed. Moreover, the stemming comprising the phenolic resin composition provided by the invention has the advantages of good plasticity and cohesive property, proper porosity, small high-temperature volume shrinkage, good sintering performance, high strength, scouring resistance, erosion resistance, good opening performance and the like and hardly causes environmental pollution.

Description

technical field [0001] The invention relates to the technical field of refractory materials, in particular to a phenolic resin composition for gun clay, a preparation method thereof and gun clay. Background technique [0002] Blast furnace smelting is a continuous production process in which iron ore is reduced to pig iron. In this production process, solid raw materials such as iron ore and flux are fed into the blast furnace in batches from the furnace top charging device according to the specified proportion. The top is lowered and gradually reduced, melted into iron, gathered in the hearth, and released from the (outlet) iron hole periodically. In recent years, 1000m 3 The following small blast furnaces are gradually restricted or banned under the national macro-control due to reasons such as low output, high energy consumption and high pollution, while large blast furnaces are gradually becoming the ironmaking industry due to their advantages such as large amount of ir...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66
Inventor 唐一林江成真胡伟李枝芳
Owner SHANDONG SHENGQUAN NEW MATERIALS CO LTD
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