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Method for preparing special refractory castable for kilns

A refractory castable and kiln technology, applied in the field of refractory materials, can solve problems such as poor thermal shock resistance, achieve the effects of improving thermal shock resistance, improving thermal shock resistance, and suppressing subsidence

Inactive Publication Date: 2018-06-15
CHANGZHOU DINGRI ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main technical problem to be solved by the present invention is to provide a preparation method of special refractory castables for kiln aiming at the disadvantage of poor thermal shock resistance of traditional refractory castables

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0023]Put the grinding aid and steel slag in a vibrating mill for mixed grinding at a mass ratio of 1:100, and pass through a 300-mesh sieve to obtain activated steel slag; add polyvinyl alcohol and water into a No. 1 beaker at a mass ratio of 1:100, and use After the glass rod was stirred and mixed for 30 minutes, it was left to swell for 4 hours, and then the No. 1 beaker was moved into a magnetic stirrer with a digital display speed measurement and a constant temperature. Under the conditions of a temperature of 100 ° C and a rotation speed of 500 r / min, it was heated and stirred to dissolve for 50 minutes to obtain polyvinyl alcohol. solution; chitosan and water were added to the No. 2 beaker at a mass ratio of 1:100, stirred and mixed with a glass rod for 30 minutes, left to swell for 4 hours, and then the No. 2 beaker was moved into a digital speed measuring constant temperature magnetic stirrer at a temperature Under the conditions of 100°C and rotating speed of 500r / min...

example 2

[0025] Put the grinding aid and steel slag in a vibrating mill for mixed grinding at a mass ratio of 1:100, and pass through a 300-mesh sieve to obtain activated steel slag; add polyvinyl alcohol and water into a No. 1 beaker at a mass ratio of 1:100, and use After the glass rod was stirred and mixed for 30 minutes, it was left to swell for 4 hours, and then the No. 1 beaker was moved into a magnetic stirrer with a digital display speed measurement and a constant temperature. Under the conditions of a temperature of 100 ° C and a rotation speed of 500 r / min, it was heated and stirred to dissolve for 50 minutes to obtain polyvinyl alcohol. solution; chitosan and water were added to the No. 2 beaker at a mass ratio of 1:100, stirred and mixed with a glass rod for 30 minutes, left to swell for 4 hours, and then the No. 2 beaker was moved into a digital speed measuring constant temperature magnetic stirrer at a temperature Under the conditions of 100°C and rotating speed of 500r / mi...

example 3

[0027] Put the grinding aid and steel slag in a vibrating mill for mixed grinding at a mass ratio of 1:100, and pass through a 300-mesh sieve to obtain activated steel slag; add polyvinyl alcohol and water into a No. 1 beaker at a mass ratio of 1:100, and use After the glass rod was stirred and mixed for 30 minutes, it was left to swell for 4 hours, and then the No. 1 beaker was moved into a magnetic stirrer with a digital display speed measurement and a constant temperature. Under the conditions of a temperature of 100 ° C and a rotation speed of 500 r / min, it was heated and stirred to dissolve for 50 minutes to obtain polyvinyl alcohol. solution; chitosan and water were added to the No. 2 beaker at a mass ratio of 1:100, stirred and mixed with a glass rod for 30 minutes, left to swell for 4 hours, and then the No. 2 beaker was moved into a digital speed measuring constant temperature magnetic stirrer at a temperature 100 ℃, rotating speed is 500r / min, heat and stir to dissolv...

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Abstract

The invention discloses a method for preparing a special refractory castable for kilns, and belongs to the technical field of refractory materials. The method comprises the following steps: placing analuminum nitrate solution in a three-necked flask, placing the three-necked flask in a digital display speed measuring constant-temperature magnetic stirrer, dropwise adding a urea solution into thethree-necked flask by using a dropping funnel, heating and stirring the obtained solution after the dropwise addition of the urea solution is finished, adding a Carbomer solution into the three-neckedflask, and heating and stirring the obtained solution to obtain a mixed slurry; placing activated steel slag, cement, a polyvinyl alcohol solution, a chitosan solution, phospholipids, a water reducer, a silane coupling agent and water in mixer, and performing stirring and mixing to obtain a mixed paste; and adding the mixed slurry into the mixer, and performing stirring and mixing to obtain the special refractory castable for kilns. The special refractory castable for kilns has excellent thermal shock resistance.

Description

technical field [0001] The invention discloses a method for preparing a special refractory castable for a kiln, belonging to the technical field of refractory materials. Background technique [0002] Refractories refer to a class of inorganic non-metallic materials with a refractoriness not lower than 1580°C. Because of their stable physical and chemical properties under high temperature conditions, they are widely used in various fields of industrial production, such as steel, non-ferrous metals, cement, petrochemical, Military industry, etc., are important basic support materials to ensure the normal operation of the industry and the development of technological innovation. There are many ways to classify refractory materials. According to the supply form, they can be divided into shaped refractory materials and unshaped refractory materials. Refractory castable is a typical unshaped refractory material, which refers to the mixture composed of reasonably graded aggregate ...

Claims

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Application Information

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IPC IPC(8): C04B35/66C04B35/626C04B35/634C04B35/63
CPCC04B35/62204C04B35/626C04B35/6316C04B35/63404C04B35/66C04B2235/3217
Inventor 吴展牙殷连海黄浩
Owner CHANGZHOU DINGRI ENVIRONMENTAL PROTECTION TECH
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