Preparation method of foaming agent for use in burning of refractory brick

A technology of foaming agent and refractory brick, which is applied in the field of foaming agent preparation, can solve the problems affecting the thermal insulation performance of refractory bricks, the difference in pore size of refractory bricks, and the uneven density of refractory bricks, so as to reduce the gas permeability and internal pores. Meticulous and uniform, reducing the effect of caustic soda residue

Inactive Publication Date: 2012-12-19
港泰耐火材料(江苏)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the density of these fillers is difficult to approach the density of the mud used to fire refractory bricks, the fillers tend to concentrate more on the upper part of the mud, resulting in uneven density of refractory bricks,

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] (1) Water and caustic soda are mixed with 1000ml water and 300ml caustic soda according to the volume ratio of 1:0.3 and heated to 70°C with water, and the required rosin weight is calculated as 350g according to the water-to-rosin weight ratio of 1:0.35, and the required weight Grind the rosin into particles with a diameter of ≤5mm and put it into the caustic soda solution to continue heating with water to boil it into a milky white block rosin soap;

[0013] (2) After the rosin soap obtained in step (1) is cooled, it is put into concentrated brine with a concentration of 15% and soaked for 2 hours, then taken out and rinsed with clear water until the pH value is 9;

[0014] (3) Mix water and bone glue in a weight ratio of 1:0.25 and heat to form a bone glue solution, mix the bone glue solution with the rosin soap after rinsing in step (2) in a weight ratio of 1:0.15, and heat until the rosin soap is completely dissolved to obtain burnt Foaming agent for refractory bri...

Embodiment 2

[0016] (1) Water and caustic soda are mixed with 1000ml water and 350ml caustic soda according to the volume ratio of 1:0.35 and heated to 80°C in water, and the weight of rosin required for calculating the weight ratio of water to rosin is 1:0.45 is 450g, and the required weight Grind the rosin into particles with a diameter of ≤5mm and put it into the caustic soda solution to continue heating with water to boil it into a milky white block rosin soap;

[0017] (2) After the rosin soap obtained in step (1) is cooled, it is put into concentrated brine with a concentration of 16% and soaked for 3 hours, then taken out and rinsed with clear water until the pH value is 8;

[0018] (3) Mix water and bone glue in a weight ratio of 1:0.27 and heat to form a bone glue solution, mix the bone glue solution with the rosin soap after rinsing in step (2) in a weight ratio of 1:0.18, and heat until the rosin soap is completely dissolved to obtain burnt Foaming agent for refractory bricks. ...

Embodiment 3

[0020] (1) Water and caustic soda are mixed with 1000ml water and 430ml caustic soda according to the volume ratio of 1:0.43 and heated to 75°C in water, and the required rosin weight is calculated according to the weight ratio of water and rosin of 1:0.5 to be 500g, and the required weight Grind the rosin into particles with a diameter of ≤5mm and put it into the caustic soda solution to continue heating with water to boil it into a milky white block rosin soap;

[0021] (2) After the rosin soap obtained in step (1) is cooled, put it into concentrated brine with a concentration of 17% and soak for 2.5 hours, then take it out and rinse it with clear water until the pH value is 8.7;

[0022] (3) Mix water and bone glue in a weight ratio of 1:0.35 and heat to form a bone glue solution, mix the bone glue solution with the rosin soap after rinsing in step (2) in a weight ratio of 1:0.2, and heat until the rosin soap is completely dissolved. Foaming agent for refractory bricks.

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Abstract

The invention discloses a preparation method of a foaming agent for use in burning of a refractory brick. The preparation method comprises the following steps of: proportionally mixing water with caustic soda, heating in a water-insulated way, grinding rosin of required weight into particles of less than or equal to 5 millimeters in diameter, putting into a caustic soda solution, continually heating in a water-insulated way, and boiling into a milky-white blocky rosin soap; cooling the rosin soap, putting into strong brine for soaking, and rinsing with clear water; and proportionally mixing water with bone glue, heating into a bone glue solution, heating the bone glue solution and the rinsed rosin soap together in the weight ratio of 1:0.25-1:0.35, and fully dissolving the rosin soap to obtain the foaming agent for use in burning of the refractory brick. In the preparation method disclosed by the invention, the weight ratios of water to caustic soda and water to rosin are controlled strictly, and rosin is ground into small-diameter particles, so that a saponification reaction is performed completely, and the uniformity of a final foaming agent is enhanced. The weight ratio of the bone glue solution to the rosin soap is controlled, so that the viscosity of the foaming agent is increased, and the foam stability is further enhanced.

Description

technical field [0001] The invention relates to a preparation method of a foaming agent, in particular to a preparation method of a foaming agent used in the process of firing refractory bricks. Background technique [0002] Refractory bricks are mainly used in the heat insulation layer of industrial kilns. The heat insulation layer is generally made of refractory fibers such as cotton, board, felt and light heat insulating refractory bricks to form a mixed layer with low thermal conductivity and low density. However, in the high temperature environment of the kiln, the mixed layer has different expansion coefficients between the refractory fiber and the refractory bricks. During the process of starting and stopping the kiln, the shrinkage and expansion rates of various materials are different, which may easily lead to the peeling of the heat insulation layer. , affecting overall performance. Therefore, a refractory brick with capillary pores is widely used now, which has t...

Claims

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Application Information

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IPC IPC(8): C04B38/06
Inventor 孟铭新盈生才樊秋官陈宏观陈小朋
Owner 港泰耐火材料(江苏)有限公司
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